/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/queue_longest.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 17:30:18,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 17:30:18,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 17:30:18,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 17:30:18,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 17:30:18,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 17:30:18,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 17:30:18,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 17:30:18,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 17:30:18,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 17:30:18,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 17:30:18,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 17:30:18,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 17:30:18,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 17:30:18,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 17:30:18,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 17:30:18,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 17:30:18,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 17:30:18,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 17:30:18,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 17:30:18,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 17:30:18,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 17:30:18,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 17:30:18,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 17:30:18,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 17:30:18,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 17:30:18,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 17:30:18,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 17:30:18,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 17:30:18,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 17:30:18,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 17:30:18,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 17:30:19,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 17:30:19,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 17:30:19,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 17:30:19,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 17:30:19,001 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 17:30:19,013 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 17:30:19,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 17:30:19,014 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 17:30:19,014 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 17:30:19,014 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 17:30:19,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 17:30:19,014 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 17:30:19,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 17:30:19,014 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 17:30:19,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 17:30:19,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 17:30:19,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 17:30:19,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 17:30:19,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 17:30:19,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 17:30:19,015 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 17:30:19,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 17:30:19,015 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 17:30:19,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 17:30:19,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 17:30:19,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 17:30:19,016 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 17:30:19,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 17:30:19,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 17:30:19,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 17:30:19,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 17:30:19,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 17:30:19,016 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 17:30:19,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 17:30:19,017 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 17:30:19,017 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 17:30:19,017 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 17:30:19,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 17:30:19,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 17:30:19,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 17:30:19,176 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 17:30:19,176 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 17:30:19,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_longest.i [2023-01-27 17:30:20,199 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 17:30:20,477 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 17:30:20,477 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i [2023-01-27 17:30:20,496 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/104a4083d/e733e50b2d904a2da6105a5c87cb853b/FLAG0e18a110b [2023-01-27 17:30:20,506 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/104a4083d/e733e50b2d904a2da6105a5c87cb853b [2023-01-27 17:30:20,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 17:30:20,508 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 17:30:20,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 17:30:20,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 17:30:20,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 17:30:20,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 05:30:20" (1/1) ... [2023-01-27 17:30:20,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f678fba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:20, skipping insertion in model container [2023-01-27 17:30:20,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 05:30:20" (1/1) ... [2023-01-27 17:30:20,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 17:30:20,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 17:30:20,811 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43296,43309] [2023-01-27 17:30:20,817 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43503,43516] [2023-01-27 17:30:20,819 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43783,43796] [2023-01-27 17:30:20,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 17:30:20,829 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 17:30:20,880 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43296,43309] [2023-01-27 17:30:20,881 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43503,43516] [2023-01-27 17:30:20,884 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43783,43796] [2023-01-27 17:30:20,885 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 17:30:20,931 INFO L208 MainTranslator]: Completed translation [2023-01-27 17:30:20,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:20 WrapperNode [2023-01-27 17:30:20,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 17:30:20,932 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 17:30:20,932 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 17:30:20,932 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 17:30:20,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:20" (1/1) ... [2023-01-27 17:30:20,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:20" (1/1) ... [2023-01-27 17:30:20,991 INFO L138 Inliner]: procedures = 274, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 243 [2023-01-27 17:30:20,991 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 17:30:20,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 17:30:20,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 17:30:20,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 17:30:21,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:20" (1/1) ... [2023-01-27 17:30:21,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:20" (1/1) ... [2023-01-27 17:30:21,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:20" (1/1) ... [2023-01-27 17:30:21,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:20" (1/1) ... [2023-01-27 17:30:21,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:20" (1/1) ... [2023-01-27 17:30:21,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:20" (1/1) ... [2023-01-27 17:30:21,019 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:20" (1/1) ... [2023-01-27 17:30:21,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:20" (1/1) ... [2023-01-27 17:30:21,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 17:30:21,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 17:30:21,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 17:30:21,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 17:30:21,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:20" (1/1) ... [2023-01-27 17:30:21,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 17:30:21,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 17:30:21,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 17:30:21,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 17:30:21,088 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-01-27 17:30:21,089 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-01-27 17:30:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-01-27 17:30:21,089 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-01-27 17:30:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 17:30:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 17:30:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 17:30:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 17:30:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-27 17:30:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 17:30:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 17:30:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 17:30:21,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 17:30:21,101 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 17:30:21,259 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 17:30:21,261 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 17:30:21,578 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 17:30:21,585 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 17:30:21,585 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-27 17:30:21,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 05:30:21 BoogieIcfgContainer [2023-01-27 17:30:21,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 17:30:21,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 17:30:21,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 17:30:21,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 17:30:21,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 05:30:20" (1/3) ... [2023-01-27 17:30:21,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1070cc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 05:30:21, skipping insertion in model container [2023-01-27 17:30:21,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:20" (2/3) ... [2023-01-27 17:30:21,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1070cc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 05:30:21, skipping insertion in model container [2023-01-27 17:30:21,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 05:30:21" (3/3) ... [2023-01-27 17:30:21,591 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2023-01-27 17:30:21,602 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 17:30:21,603 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-01-27 17:30:21,603 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 17:30:21,688 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 17:30:21,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 258 transitions, 532 flow [2023-01-27 17:30:21,785 INFO L130 PetriNetUnfolder]: 15/256 cut-off events. [2023-01-27 17:30:21,785 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 17:30:21,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 256 events. 15/256 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 359 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 185. Up to 2 conditions per place. [2023-01-27 17:30:21,799 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 258 transitions, 532 flow [2023-01-27 17:30:21,803 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 247 transitions, 503 flow [2023-01-27 17:30:21,806 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 17:30:21,826 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 239 places, 247 transitions, 503 flow [2023-01-27 17:30:21,828 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 239 places, 247 transitions, 503 flow [2023-01-27 17:30:21,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 247 transitions, 503 flow [2023-01-27 17:30:21,873 INFO L130 PetriNetUnfolder]: 15/247 cut-off events. [2023-01-27 17:30:21,874 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 17:30:21,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 247 events. 15/247 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 326 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 185. Up to 2 conditions per place. [2023-01-27 17:30:21,884 INFO L119 LiptonReduction]: Number of co-enabled transitions 15864 [2023-01-27 17:30:26,986 INFO L134 LiptonReduction]: Checked pairs total: 33075 [2023-01-27 17:30:26,986 INFO L136 LiptonReduction]: Total number of compositions: 215 [2023-01-27 17:30:26,997 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 17:30:27,012 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;@69aa4804, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 17:30:27,012 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-01-27 17:30:27,014 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-01-27 17:30:27,014 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 17:30:27,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:27,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-01-27 17:30:27,015 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:27,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:27,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2023-01-27 17:30:27,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:27,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284780835] [2023-01-27 17:30:27,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:27,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:27,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:27,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:27,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:27,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284780835] [2023-01-27 17:30:27,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284780835] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:27,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:27,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-01-27 17:30:27,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241108250] [2023-01-27 17:30:27,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:27,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-27 17:30:27,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:27,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-27 17:30:27,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-27 17:30:27,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 473 [2023-01-27 17:30:27,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 141 flow. Second operand has 2 states, 2 states have (on average 245.5) internal successors, (491), 2 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:27,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:27,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 473 [2023-01-27 17:30:27,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:27,566 INFO L130 PetriNetUnfolder]: 1540/2645 cut-off events. [2023-01-27 17:30:27,567 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2023-01-27 17:30:27,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5115 conditions, 2645 events. 1540/2645 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 12466 event pairs, 1212 based on Foata normal form. 32/2302 useless extension candidates. Maximal degree in co-relation 4962. Up to 2396 conditions per place. [2023-01-27 17:30:27,578 INFO L137 encePairwiseOnDemand]: 470/473 looper letters, 53 selfloop transitions, 0 changer transitions 0/63 dead transitions. [2023-01-27 17:30:27,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 241 flow [2023-01-27 17:30:27,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-27 17:30:27,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-27 17:30:27,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 546 transitions. [2023-01-27 17:30:27,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5771670190274841 [2023-01-27 17:30:27,595 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 546 transitions. [2023-01-27 17:30:27,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 546 transitions. [2023-01-27 17:30:27,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:27,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 546 transitions. [2023-01-27 17:30:27,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 273.0) internal successors, (546), 2 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:27,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 473.0) internal successors, (1419), 3 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:27,610 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 473.0) internal successors, (1419), 3 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:27,612 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 141 flow. Second operand 2 states and 546 transitions. [2023-01-27 17:30:27,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 241 flow [2023-01-27 17:30:27,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 63 transitions, 236 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 17:30:27,616 INFO L231 Difference]: Finished difference. Result has 60 places, 63 transitions, 130 flow [2023-01-27 17:30:27,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=130, PETRI_PLACES=60, PETRI_TRANSITIONS=63} [2023-01-27 17:30:27,624 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -3 predicate places. [2023-01-27 17:30:27,624 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 63 transitions, 130 flow [2023-01-27 17:30:27,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 245.5) internal successors, (491), 2 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:27,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:27,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:27,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 17:30:27,625 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:27,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:27,626 INFO L85 PathProgramCache]: Analyzing trace with hash 110343563, now seen corresponding path program 1 times [2023-01-27 17:30:27,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:27,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59430607] [2023-01-27 17:30:27,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:27,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:27,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:27,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:27,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59430607] [2023-01-27 17:30:27,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59430607] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:27,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:27,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 17:30:27,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291783212] [2023-01-27 17:30:27,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:27,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 17:30:27,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:27,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 17:30:27,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 17:30:27,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 473 [2023-01-27 17:30:27,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 63 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:27,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:27,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 473 [2023-01-27 17:30:27,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:28,047 INFO L130 PetriNetUnfolder]: 1508/2611 cut-off events. [2023-01-27 17:30:28,047 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 17:30:28,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5032 conditions, 2611 events. 1508/2611 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 12447 event pairs, 1167 based on Foata normal form. 0/2268 useless extension candidates. Maximal degree in co-relation 5029. Up to 2249 conditions per place. [2023-01-27 17:30:28,054 INFO L137 encePairwiseOnDemand]: 469/473 looper letters, 68 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2023-01-27 17:30:28,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 81 transitions, 310 flow [2023-01-27 17:30:28,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 17:30:28,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 17:30:28,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 789 transitions. [2023-01-27 17:30:28,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5560253699788583 [2023-01-27 17:30:28,056 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 789 transitions. [2023-01-27 17:30:28,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 789 transitions. [2023-01-27 17:30:28,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:28,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 789 transitions. [2023-01-27 17:30:28,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:28,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:28,061 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:28,061 INFO L175 Difference]: Start difference. First operand has 60 places, 63 transitions, 130 flow. Second operand 3 states and 789 transitions. [2023-01-27 17:30:28,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 81 transitions, 310 flow [2023-01-27 17:30:28,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 81 transitions, 310 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 17:30:28,063 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 134 flow [2023-01-27 17:30:28,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2023-01-27 17:30:28,066 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -1 predicate places. [2023-01-27 17:30:28,066 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 134 flow [2023-01-27 17:30:28,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:28,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:28,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:28,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 17:30:28,067 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:28,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:28,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1330496416, now seen corresponding path program 1 times [2023-01-27 17:30:28,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:28,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139517634] [2023-01-27 17:30:28,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:28,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:28,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:28,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:28,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139517634] [2023-01-27 17:30:28,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139517634] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:28,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:28,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 17:30:28,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883636147] [2023-01-27 17:30:28,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:28,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 17:30:28,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:28,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 17:30:28,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 17:30:28,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 473 [2023-01-27 17:30:28,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 187.4) internal successors, (937), 5 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:28,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:28,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 473 [2023-01-27 17:30:28,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:28,897 INFO L130 PetriNetUnfolder]: 1608/2744 cut-off events. [2023-01-27 17:30:28,899 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-01-27 17:30:28,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5428 conditions, 2744 events. 1608/2744 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 12803 event pairs, 1244 based on Foata normal form. 0/2392 useless extension candidates. Maximal degree in co-relation 5424. Up to 2518 conditions per place. [2023-01-27 17:30:28,906 INFO L137 encePairwiseOnDemand]: 467/473 looper letters, 58 selfloop transitions, 7 changer transitions 0/73 dead transitions. [2023-01-27 17:30:28,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 73 transitions, 288 flow [2023-01-27 17:30:28,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 17:30:28,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 17:30:28,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 991 transitions. [2023-01-27 17:30:28,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41902748414376323 [2023-01-27 17:30:28,909 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 991 transitions. [2023-01-27 17:30:28,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 991 transitions. [2023-01-27 17:30:28,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:28,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 991 transitions. [2023-01-27 17:30:28,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 198.2) internal successors, (991), 5 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:28,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 473.0) internal successors, (2838), 6 states have internal predecessors, (2838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:28,915 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 473.0) internal successors, (2838), 6 states have internal predecessors, (2838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:28,915 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 134 flow. Second operand 5 states and 991 transitions. [2023-01-27 17:30:28,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 73 transitions, 288 flow [2023-01-27 17:30:28,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 73 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 17:30:28,918 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 173 flow [2023-01-27 17:30:28,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=173, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2023-01-27 17:30:28,919 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 4 predicate places. [2023-01-27 17:30:28,919 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 173 flow [2023-01-27 17:30:28,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 187.4) internal successors, (937), 5 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:28,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:28,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:28,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 17:30:28,920 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:28,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:28,921 INFO L85 PathProgramCache]: Analyzing trace with hash -588975779, now seen corresponding path program 1 times [2023-01-27 17:30:28,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:28,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792831991] [2023-01-27 17:30:28,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:28,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:29,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:29,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:29,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792831991] [2023-01-27 17:30:29,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792831991] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:29,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:29,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 17:30:29,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251392102] [2023-01-27 17:30:29,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:29,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 17:30:29,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:29,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 17:30:29,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-27 17:30:29,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 473 [2023-01-27 17:30:29,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:29,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:29,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 473 [2023-01-27 17:30:29,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:29,586 INFO L130 PetriNetUnfolder]: 1839/3131 cut-off events. [2023-01-27 17:30:29,586 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-01-27 17:30:29,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6327 conditions, 3131 events. 1839/3131 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 15156 event pairs, 302 based on Foata normal form. 17/2811 useless extension candidates. Maximal degree in co-relation 6320. Up to 2548 conditions per place. [2023-01-27 17:30:29,599 INFO L137 encePairwiseOnDemand]: 465/473 looper letters, 98 selfloop transitions, 16 changer transitions 0/122 dead transitions. [2023-01-27 17:30:29,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 122 transitions, 526 flow [2023-01-27 17:30:29,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 17:30:29,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 17:30:29,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1198 transitions. [2023-01-27 17:30:29,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42212825933756165 [2023-01-27 17:30:29,602 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1198 transitions. [2023-01-27 17:30:29,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1198 transitions. [2023-01-27 17:30:29,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:29,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1198 transitions. [2023-01-27 17:30:29,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.66666666666666) internal successors, (1198), 6 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:29,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:29,644 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:29,644 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 173 flow. Second operand 6 states and 1198 transitions. [2023-01-27 17:30:29,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 122 transitions, 526 flow [2023-01-27 17:30:29,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 122 transitions, 526 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 17:30:29,647 INFO L231 Difference]: Finished difference. Result has 75 places, 78 transitions, 263 flow [2023-01-27 17:30:29,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=75, PETRI_TRANSITIONS=78} [2023-01-27 17:30:29,648 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 12 predicate places. [2023-01-27 17:30:29,648 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 78 transitions, 263 flow [2023-01-27 17:30:29,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:29,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:29,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:29,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 17:30:29,653 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:29,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:29,653 INFO L85 PathProgramCache]: Analyzing trace with hash -507576723, now seen corresponding path program 2 times [2023-01-27 17:30:29,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:29,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757234785] [2023-01-27 17:30:29,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:29,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:30,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:30,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:30,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757234785] [2023-01-27 17:30:30,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757234785] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:30,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:30,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 17:30:30,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843908394] [2023-01-27 17:30:30,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:30,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 17:30:30,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:30,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 17:30:30,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-27 17:30:30,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 473 [2023-01-27 17:30:30,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 78 transitions, 263 flow. Second operand has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:30,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:30,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 473 [2023-01-27 17:30:30,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:30,600 INFO L130 PetriNetUnfolder]: 1970/3344 cut-off events. [2023-01-27 17:30:30,600 INFO L131 PetriNetUnfolder]: For 620/620 co-relation queries the response was YES. [2023-01-27 17:30:30,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7238 conditions, 3344 events. 1970/3344 cut-off events. For 620/620 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 16365 event pairs, 834 based on Foata normal form. 17/3012 useless extension candidates. Maximal degree in co-relation 7227. Up to 2536 conditions per place. [2023-01-27 17:30:30,612 INFO L137 encePairwiseOnDemand]: 465/473 looper letters, 100 selfloop transitions, 19 changer transitions 0/127 dead transitions. [2023-01-27 17:30:30,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 127 transitions, 622 flow [2023-01-27 17:30:30,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 17:30:30,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 17:30:30,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1197 transitions. [2023-01-27 17:30:30,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42177589852008457 [2023-01-27 17:30:30,615 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1197 transitions. [2023-01-27 17:30:30,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1197 transitions. [2023-01-27 17:30:30,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:30,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1197 transitions. [2023-01-27 17:30:30,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.5) internal successors, (1197), 6 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:30,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:30,622 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:30,622 INFO L175 Difference]: Start difference. First operand has 75 places, 78 transitions, 263 flow. Second operand 6 states and 1197 transitions. [2023-01-27 17:30:30,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 127 transitions, 622 flow [2023-01-27 17:30:30,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 127 transitions, 614 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-01-27 17:30:30,627 INFO L231 Difference]: Finished difference. Result has 82 places, 83 transitions, 342 flow [2023-01-27 17:30:30,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=342, PETRI_PLACES=82, PETRI_TRANSITIONS=83} [2023-01-27 17:30:30,627 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 19 predicate places. [2023-01-27 17:30:30,628 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 83 transitions, 342 flow [2023-01-27 17:30:30,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:30,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:30,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:30,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 17:30:30,628 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:30,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:30,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1152821177, now seen corresponding path program 3 times [2023-01-27 17:30:30,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:30,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4622870] [2023-01-27 17:30:30,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:30,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:31,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:31,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:31,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4622870] [2023-01-27 17:30:31,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4622870] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:31,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:31,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 17:30:31,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084940657] [2023-01-27 17:30:31,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:31,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 17:30:31,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:31,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 17:30:31,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-01-27 17:30:31,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 473 [2023-01-27 17:30:31,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 83 transitions, 342 flow. Second operand has 9 states, 9 states have (on average 175.44444444444446) internal successors, (1579), 9 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:31,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:31,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 473 [2023-01-27 17:30:31,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:31,649 INFO L130 PetriNetUnfolder]: 2695/4564 cut-off events. [2023-01-27 17:30:31,650 INFO L131 PetriNetUnfolder]: For 1308/1308 co-relation queries the response was YES. [2023-01-27 17:30:31,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10132 conditions, 4564 events. 2695/4564 cut-off events. For 1308/1308 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 24051 event pairs, 579 based on Foata normal form. 0/4082 useless extension candidates. Maximal degree in co-relation 10118. Up to 2481 conditions per place. [2023-01-27 17:30:31,671 INFO L137 encePairwiseOnDemand]: 462/473 looper letters, 156 selfloop transitions, 25 changer transitions 3/192 dead transitions. [2023-01-27 17:30:31,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 192 transitions, 970 flow [2023-01-27 17:30:31,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 17:30:31,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 17:30:31,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1739 transitions. [2023-01-27 17:30:31,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4085036410617806 [2023-01-27 17:30:31,675 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1739 transitions. [2023-01-27 17:30:31,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1739 transitions. [2023-01-27 17:30:31,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:31,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1739 transitions. [2023-01-27 17:30:31,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 193.22222222222223) internal successors, (1739), 9 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:31,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:31,683 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:31,683 INFO L175 Difference]: Start difference. First operand has 82 places, 83 transitions, 342 flow. Second operand 9 states and 1739 transitions. [2023-01-27 17:30:31,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 192 transitions, 970 flow [2023-01-27 17:30:31,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 192 transitions, 960 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-01-27 17:30:31,690 INFO L231 Difference]: Finished difference. Result has 94 places, 93 transitions, 455 flow [2023-01-27 17:30:31,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=455, PETRI_PLACES=94, PETRI_TRANSITIONS=93} [2023-01-27 17:30:31,691 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 31 predicate places. [2023-01-27 17:30:31,691 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 93 transitions, 455 flow [2023-01-27 17:30:31,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 175.44444444444446) internal successors, (1579), 9 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:31,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:31,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:31,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 17:30:31,692 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:31,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:31,692 INFO L85 PathProgramCache]: Analyzing trace with hash 454650260, now seen corresponding path program 1 times [2023-01-27 17:30:31,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:31,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770313842] [2023-01-27 17:30:31,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:31,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:32,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:32,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:32,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770313842] [2023-01-27 17:30:32,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770313842] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:32,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:32,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 17:30:32,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875066653] [2023-01-27 17:30:32,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:32,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 17:30:32,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:32,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 17:30:32,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-01-27 17:30:32,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 473 [2023-01-27 17:30:32,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 93 transitions, 455 flow. Second operand has 10 states, 10 states have (on average 175.3) internal successors, (1753), 10 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:32,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:32,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 473 [2023-01-27 17:30:32,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:32,713 INFO L130 PetriNetUnfolder]: 2672/4539 cut-off events. [2023-01-27 17:30:32,714 INFO L131 PetriNetUnfolder]: For 2319/2319 co-relation queries the response was YES. [2023-01-27 17:30:32,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10719 conditions, 4539 events. 2672/4539 cut-off events. For 2319/2319 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 23922 event pairs, 1905 based on Foata normal form. 0/4050 useless extension candidates. Maximal degree in co-relation 10700. Up to 4236 conditions per place. [2023-01-27 17:30:32,731 INFO L137 encePairwiseOnDemand]: 462/473 looper letters, 88 selfloop transitions, 17 changer transitions 0/113 dead transitions. [2023-01-27 17:30:32,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 113 transitions, 737 flow [2023-01-27 17:30:32,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 17:30:32,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 17:30:32,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1647 transitions. [2023-01-27 17:30:32,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.386892177589852 [2023-01-27 17:30:32,735 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1647 transitions. [2023-01-27 17:30:32,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1647 transitions. [2023-01-27 17:30:32,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:32,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1647 transitions. [2023-01-27 17:30:32,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:32,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:32,742 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:32,742 INFO L175 Difference]: Start difference. First operand has 94 places, 93 transitions, 455 flow. Second operand 9 states and 1647 transitions. [2023-01-27 17:30:32,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 113 transitions, 737 flow [2023-01-27 17:30:32,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 113 transitions, 704 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-01-27 17:30:32,750 INFO L231 Difference]: Finished difference. Result has 103 places, 102 transitions, 528 flow [2023-01-27 17:30:32,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=528, PETRI_PLACES=103, PETRI_TRANSITIONS=102} [2023-01-27 17:30:32,751 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 40 predicate places. [2023-01-27 17:30:32,752 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 528 flow [2023-01-27 17:30:32,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 175.3) internal successors, (1753), 10 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:32,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:32,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:32,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 17:30:32,752 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:32,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:32,753 INFO L85 PathProgramCache]: Analyzing trace with hash -535562244, now seen corresponding path program 1 times [2023-01-27 17:30:32,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:32,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114852030] [2023-01-27 17:30:32,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:32,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:32,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:32,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:32,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114852030] [2023-01-27 17:30:32,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114852030] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:32,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:32,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 17:30:32,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431457908] [2023-01-27 17:30:32,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:32,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 17:30:32,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:32,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 17:30:32,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 17:30:32,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 473 [2023-01-27 17:30:32,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 102 transitions, 528 flow. Second operand has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:32,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:32,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 473 [2023-01-27 17:30:32,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:33,048 INFO L130 PetriNetUnfolder]: 1879/3227 cut-off events. [2023-01-27 17:30:33,048 INFO L131 PetriNetUnfolder]: For 807/825 co-relation queries the response was YES. [2023-01-27 17:30:33,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7222 conditions, 3227 events. 1879/3227 cut-off events. For 807/825 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 14190 event pairs, 1030 based on Foata normal form. 18/2804 useless extension candidates. Maximal degree in co-relation 7198. Up to 1612 conditions per place. [2023-01-27 17:30:33,063 INFO L137 encePairwiseOnDemand]: 469/473 looper letters, 95 selfloop transitions, 3 changer transitions 4/113 dead transitions. [2023-01-27 17:30:33,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 113 transitions, 688 flow [2023-01-27 17:30:33,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 17:30:33,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 17:30:33,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 799 transitions. [2023-01-27 17:30:33,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5630725863284003 [2023-01-27 17:30:33,065 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 799 transitions. [2023-01-27 17:30:33,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 799 transitions. [2023-01-27 17:30:33,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:33,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 799 transitions. [2023-01-27 17:30:33,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:33,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:33,069 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:33,069 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 528 flow. Second operand 3 states and 799 transitions. [2023-01-27 17:30:33,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 113 transitions, 688 flow [2023-01-27 17:30:33,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 113 transitions, 611 flow, removed 9 selfloop flow, removed 12 redundant places. [2023-01-27 17:30:33,073 INFO L231 Difference]: Finished difference. Result has 94 places, 88 transitions, 365 flow [2023-01-27 17:30:33,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=365, PETRI_PLACES=94, PETRI_TRANSITIONS=88} [2023-01-27 17:30:33,076 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 31 predicate places. [2023-01-27 17:30:33,076 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 88 transitions, 365 flow [2023-01-27 17:30:33,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:33,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:33,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:33,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 17:30:33,076 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:33,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:33,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1966953527, now seen corresponding path program 1 times [2023-01-27 17:30:33,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:33,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726945919] [2023-01-27 17:30:33,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:33,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:33,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:33,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:33,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726945919] [2023-01-27 17:30:33,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726945919] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:33,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:33,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 17:30:33,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899312829] [2023-01-27 17:30:33,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:33,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 17:30:33,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:33,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 17:30:33,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-01-27 17:30:33,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 473 [2023-01-27 17:30:33,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 88 transitions, 365 flow. Second operand has 11 states, 11 states have (on average 171.27272727272728) internal successors, (1884), 11 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) [2023-01-27 17:30:33,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:33,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 473 [2023-01-27 17:30:33,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:34,203 INFO L130 PetriNetUnfolder]: 1644/2906 cut-off events. [2023-01-27 17:30:34,204 INFO L131 PetriNetUnfolder]: For 436/436 co-relation queries the response was YES. [2023-01-27 17:30:34,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6340 conditions, 2906 events. 1644/2906 cut-off events. For 436/436 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12791 event pairs, 533 based on Foata normal form. 9/2528 useless extension candidates. Maximal degree in co-relation 6320. Up to 2003 conditions per place. [2023-01-27 17:30:34,212 INFO L137 encePairwiseOnDemand]: 461/473 looper letters, 95 selfloop transitions, 23 changer transitions 10/137 dead transitions. [2023-01-27 17:30:34,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 137 transitions, 730 flow [2023-01-27 17:30:34,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 17:30:34,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 17:30:34,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1646 transitions. [2023-01-27 17:30:34,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38665727037820063 [2023-01-27 17:30:34,217 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1646 transitions. [2023-01-27 17:30:34,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1646 transitions. [2023-01-27 17:30:34,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:34,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1646 transitions. [2023-01-27 17:30:34,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 182.88888888888889) internal successors, (1646), 9 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:34,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:34,225 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:34,225 INFO L175 Difference]: Start difference. First operand has 94 places, 88 transitions, 365 flow. Second operand 9 states and 1646 transitions. [2023-01-27 17:30:34,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 137 transitions, 730 flow [2023-01-27 17:30:34,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 137 transitions, 713 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-01-27 17:30:34,229 INFO L231 Difference]: Finished difference. Result has 97 places, 86 transitions, 417 flow [2023-01-27 17:30:34,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=417, PETRI_PLACES=97, PETRI_TRANSITIONS=86} [2023-01-27 17:30:34,229 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 34 predicate places. [2023-01-27 17:30:34,231 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 86 transitions, 417 flow [2023-01-27 17:30:34,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 171.27272727272728) internal successors, (1884), 11 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) [2023-01-27 17:30:34,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:34,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:34,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 17:30:34,242 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:34,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:34,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1215939803, now seen corresponding path program 2 times [2023-01-27 17:30:34,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:34,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553216272] [2023-01-27 17:30:34,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:34,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:34,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:34,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:34,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553216272] [2023-01-27 17:30:34,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553216272] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:34,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:34,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 17:30:34,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521137456] [2023-01-27 17:30:34,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:34,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 17:30:34,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:34,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 17:30:34,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-01-27 17:30:34,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 473 [2023-01-27 17:30:34,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 86 transitions, 417 flow. Second operand has 11 states, 11 states have (on average 171.27272727272728) internal successors, (1884), 11 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) [2023-01-27 17:30:34,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:34,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 473 [2023-01-27 17:30:34,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:35,370 INFO L130 PetriNetUnfolder]: 1778/3157 cut-off events. [2023-01-27 17:30:35,370 INFO L131 PetriNetUnfolder]: For 694/694 co-relation queries the response was YES. [2023-01-27 17:30:35,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7051 conditions, 3157 events. 1778/3157 cut-off events. For 694/694 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 14505 event pairs, 469 based on Foata normal form. 0/2733 useless extension candidates. Maximal degree in co-relation 7031. Up to 1744 conditions per place. [2023-01-27 17:30:35,378 INFO L137 encePairwiseOnDemand]: 462/473 looper letters, 100 selfloop transitions, 27 changer transitions 12/148 dead transitions. [2023-01-27 17:30:35,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 148 transitions, 849 flow [2023-01-27 17:30:35,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 17:30:35,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 17:30:35,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1653 transitions. [2023-01-27 17:30:35,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3883016208597604 [2023-01-27 17:30:35,382 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1653 transitions. [2023-01-27 17:30:35,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1653 transitions. [2023-01-27 17:30:35,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:35,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1653 transitions. [2023-01-27 17:30:35,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 183.66666666666666) internal successors, (1653), 9 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:35,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:35,388 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:35,388 INFO L175 Difference]: Start difference. First operand has 97 places, 86 transitions, 417 flow. Second operand 9 states and 1653 transitions. [2023-01-27 17:30:35,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 148 transitions, 849 flow [2023-01-27 17:30:35,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 148 transitions, 808 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-01-27 17:30:35,392 INFO L231 Difference]: Finished difference. Result has 102 places, 89 transitions, 476 flow [2023-01-27 17:30:35,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=476, PETRI_PLACES=102, PETRI_TRANSITIONS=89} [2023-01-27 17:30:35,393 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 39 predicate places. [2023-01-27 17:30:35,393 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 89 transitions, 476 flow [2023-01-27 17:30:35,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 171.27272727272728) internal successors, (1884), 11 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) [2023-01-27 17:30:35,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:35,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:35,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 17:30:35,394 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:35,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:35,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1213258613, now seen corresponding path program 3 times [2023-01-27 17:30:35,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:35,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009164817] [2023-01-27 17:30:35,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:35,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:35,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:35,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:35,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009164817] [2023-01-27 17:30:35,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009164817] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:35,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:35,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 17:30:35,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557117860] [2023-01-27 17:30:35,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:35,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 17:30:35,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:35,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 17:30:35,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-01-27 17:30:35,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 473 [2023-01-27 17:30:35,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 89 transitions, 476 flow. Second operand has 11 states, 11 states have (on average 171.27272727272728) internal successors, (1884), 11 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) [2023-01-27 17:30:35,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:35,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 473 [2023-01-27 17:30:35,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:36,371 INFO L130 PetriNetUnfolder]: 1791/3168 cut-off events. [2023-01-27 17:30:36,371 INFO L131 PetriNetUnfolder]: For 792/792 co-relation queries the response was YES. [2023-01-27 17:30:36,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7229 conditions, 3168 events. 1791/3168 cut-off events. For 792/792 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 14388 event pairs, 515 based on Foata normal form. 0/2741 useless extension candidates. Maximal degree in co-relation 7207. Up to 1744 conditions per place. [2023-01-27 17:30:36,386 INFO L137 encePairwiseOnDemand]: 462/473 looper letters, 94 selfloop transitions, 28 changer transitions 9/140 dead transitions. [2023-01-27 17:30:36,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 140 transitions, 859 flow [2023-01-27 17:30:36,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 17:30:36,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 17:30:36,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1642 transitions. [2023-01-27 17:30:36,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38571764153159505 [2023-01-27 17:30:36,390 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1642 transitions. [2023-01-27 17:30:36,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1642 transitions. [2023-01-27 17:30:36,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:36,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1642 transitions. [2023-01-27 17:30:36,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 182.44444444444446) internal successors, (1642), 9 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:36,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:36,396 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:36,396 INFO L175 Difference]: Start difference. First operand has 102 places, 89 transitions, 476 flow. Second operand 9 states and 1642 transitions. [2023-01-27 17:30:36,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 140 transitions, 859 flow [2023-01-27 17:30:36,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 140 transitions, 822 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-01-27 17:30:36,401 INFO L231 Difference]: Finished difference. Result has 105 places, 90 transitions, 514 flow [2023-01-27 17:30:36,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=514, PETRI_PLACES=105, PETRI_TRANSITIONS=90} [2023-01-27 17:30:36,402 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 42 predicate places. [2023-01-27 17:30:36,402 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 90 transitions, 514 flow [2023-01-27 17:30:36,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 171.27272727272728) internal successors, (1884), 11 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) [2023-01-27 17:30:36,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:36,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:36,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-27 17:30:36,403 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:36,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:36,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1209251243, now seen corresponding path program 4 times [2023-01-27 17:30:36,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:36,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288275711] [2023-01-27 17:30:36,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:36,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:36,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:36,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:36,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288275711] [2023-01-27 17:30:36,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288275711] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:36,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:36,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 17:30:36,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340914887] [2023-01-27 17:30:36,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:36,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 17:30:36,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:36,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 17:30:36,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-01-27 17:30:36,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 473 [2023-01-27 17:30:36,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 90 transitions, 514 flow. Second operand has 11 states, 11 states have (on average 171.27272727272728) internal successors, (1884), 11 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) [2023-01-27 17:30:36,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:36,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 473 [2023-01-27 17:30:36,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:37,420 INFO L130 PetriNetUnfolder]: 1778/3137 cut-off events. [2023-01-27 17:30:37,420 INFO L131 PetriNetUnfolder]: For 925/925 co-relation queries the response was YES. [2023-01-27 17:30:37,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7262 conditions, 3137 events. 1778/3137 cut-off events. For 925/925 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 14151 event pairs, 504 based on Foata normal form. 0/2721 useless extension candidates. Maximal degree in co-relation 7239. Up to 1744 conditions per place. [2023-01-27 17:30:37,432 INFO L137 encePairwiseOnDemand]: 463/473 looper letters, 92 selfloop transitions, 28 changer transitions 10/138 dead transitions. [2023-01-27 17:30:37,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 138 transitions, 881 flow [2023-01-27 17:30:37,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 17:30:37,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 17:30:37,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1640 transitions. [2023-01-27 17:30:37,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38524782710829225 [2023-01-27 17:30:37,436 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1640 transitions. [2023-01-27 17:30:37,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1640 transitions. [2023-01-27 17:30:37,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:37,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1640 transitions. [2023-01-27 17:30:37,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 182.22222222222223) internal successors, (1640), 9 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:37,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:37,442 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:37,442 INFO L175 Difference]: Start difference. First operand has 105 places, 90 transitions, 514 flow. Second operand 9 states and 1640 transitions. [2023-01-27 17:30:37,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 138 transitions, 881 flow [2023-01-27 17:30:37,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 138 transitions, 848 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-01-27 17:30:37,448 INFO L231 Difference]: Finished difference. Result has 105 places, 88 transitions, 529 flow [2023-01-27 17:30:37,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=529, PETRI_PLACES=105, PETRI_TRANSITIONS=88} [2023-01-27 17:30:37,449 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 42 predicate places. [2023-01-27 17:30:37,449 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 88 transitions, 529 flow [2023-01-27 17:30:37,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 171.27272727272728) internal successors, (1884), 11 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) [2023-01-27 17:30:37,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:37,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:37,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-27 17:30:37,449 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:37,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:37,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1942684503, now seen corresponding path program 1 times [2023-01-27 17:30:37,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:37,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304835783] [2023-01-27 17:30:37,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:37,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:37,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:37,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:37,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304835783] [2023-01-27 17:30:37,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304835783] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:37,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:37,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 17:30:37,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753241331] [2023-01-27 17:30:37,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:37,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 17:30:37,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:37,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 17:30:37,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 17:30:37,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 473 [2023-01-27 17:30:37,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 88 transitions, 529 flow. Second operand has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:37,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:37,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 473 [2023-01-27 17:30:37,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:37,685 INFO L130 PetriNetUnfolder]: 1119/2092 cut-off events. [2023-01-27 17:30:37,685 INFO L131 PetriNetUnfolder]: For 919/919 co-relation queries the response was YES. [2023-01-27 17:30:37,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5165 conditions, 2092 events. 1119/2092 cut-off events. For 919/919 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 9421 event pairs, 278 based on Foata normal form. 2/1928 useless extension candidates. Maximal degree in co-relation 5142. Up to 1502 conditions per place. [2023-01-27 17:30:37,692 INFO L137 encePairwiseOnDemand]: 467/473 looper letters, 80 selfloop transitions, 6 changer transitions 1/100 dead transitions. [2023-01-27 17:30:37,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 100 transitions, 743 flow [2023-01-27 17:30:37,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 17:30:37,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 17:30:37,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 760 transitions. [2023-01-27 17:30:37,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5355884425651868 [2023-01-27 17:30:37,694 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 760 transitions. [2023-01-27 17:30:37,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 760 transitions. [2023-01-27 17:30:37,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:37,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 760 transitions. [2023-01-27 17:30:37,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:37,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:37,697 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:37,697 INFO L175 Difference]: Start difference. First operand has 105 places, 88 transitions, 529 flow. Second operand 3 states and 760 transitions. [2023-01-27 17:30:37,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 100 transitions, 743 flow [2023-01-27 17:30:37,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 100 transitions, 685 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-01-27 17:30:37,702 INFO L231 Difference]: Finished difference. Result has 99 places, 88 transitions, 483 flow [2023-01-27 17:30:37,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=483, PETRI_PLACES=99, PETRI_TRANSITIONS=88} [2023-01-27 17:30:37,703 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 36 predicate places. [2023-01-27 17:30:37,703 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 88 transitions, 483 flow [2023-01-27 17:30:37,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:37,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:37,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:37,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-27 17:30:37,704 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:37,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:37,704 INFO L85 PathProgramCache]: Analyzing trace with hash 272642884, now seen corresponding path program 1 times [2023-01-27 17:30:37,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:37,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394960943] [2023-01-27 17:30:37,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:37,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:38,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:38,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:38,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394960943] [2023-01-27 17:30:38,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394960943] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:38,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:38,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-01-27 17:30:38,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598769347] [2023-01-27 17:30:38,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:38,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 17:30:38,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:38,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 17:30:38,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-01-27 17:30:38,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 473 [2023-01-27 17:30:38,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 88 transitions, 483 flow. Second operand has 13 states, 13 states have (on average 176.69230769230768) internal successors, (2297), 13 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:38,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:38,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 473 [2023-01-27 17:30:38,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:39,020 INFO L130 PetriNetUnfolder]: 1155/2163 cut-off events. [2023-01-27 17:30:39,020 INFO L131 PetriNetUnfolder]: For 778/780 co-relation queries the response was YES. [2023-01-27 17:30:39,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5325 conditions, 2163 events. 1155/2163 cut-off events. For 778/780 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9844 event pairs, 500 based on Foata normal form. 0/2080 useless extension candidates. Maximal degree in co-relation 5302. Up to 1247 conditions per place. [2023-01-27 17:30:39,027 INFO L137 encePairwiseOnDemand]: 457/473 looper letters, 108 selfloop transitions, 31 changer transitions 12/159 dead transitions. [2023-01-27 17:30:39,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 159 transitions, 976 flow [2023-01-27 17:30:39,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 17:30:39,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 17:30:39,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2221 transitions. [2023-01-27 17:30:39,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3912966878083157 [2023-01-27 17:30:39,032 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2221 transitions. [2023-01-27 17:30:39,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2221 transitions. [2023-01-27 17:30:39,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:39,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2221 transitions. [2023-01-27 17:30:39,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 185.08333333333334) internal successors, (2221), 12 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:39,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 473.0) internal successors, (6149), 13 states have internal predecessors, (6149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:39,040 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 473.0) internal successors, (6149), 13 states have internal predecessors, (6149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:39,040 INFO L175 Difference]: Start difference. First operand has 99 places, 88 transitions, 483 flow. Second operand 12 states and 2221 transitions. [2023-01-27 17:30:39,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 159 transitions, 976 flow [2023-01-27 17:30:39,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 159 transitions, 966 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 17:30:39,046 INFO L231 Difference]: Finished difference. Result has 113 places, 97 transitions, 618 flow [2023-01-27 17:30:39,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=618, PETRI_PLACES=113, PETRI_TRANSITIONS=97} [2023-01-27 17:30:39,047 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 50 predicate places. [2023-01-27 17:30:39,047 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 97 transitions, 618 flow [2023-01-27 17:30:39,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 176.69230769230768) internal successors, (2297), 13 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:39,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:39,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:39,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-27 17:30:39,048 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:39,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:39,048 INFO L85 PathProgramCache]: Analyzing trace with hash -54871982, now seen corresponding path program 2 times [2023-01-27 17:30:39,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:39,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944450281] [2023-01-27 17:30:39,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:39,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:40,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:40,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:40,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944450281] [2023-01-27 17:30:40,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944450281] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:40,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:40,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-01-27 17:30:40,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994793049] [2023-01-27 17:30:40,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:40,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-27 17:30:40,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:40,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-27 17:30:40,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-01-27 17:30:40,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 473 [2023-01-27 17:30:40,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 97 transitions, 618 flow. Second operand has 17 states, 17 states have (on average 174.05882352941177) internal successors, (2959), 17 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:40,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:40,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 473 [2023-01-27 17:30:40,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:41,249 INFO L130 PetriNetUnfolder]: 1687/3169 cut-off events. [2023-01-27 17:30:41,249 INFO L131 PetriNetUnfolder]: For 1108/1112 co-relation queries the response was YES. [2023-01-27 17:30:41,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7916 conditions, 3169 events. 1687/3169 cut-off events. For 1108/1112 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 15702 event pairs, 284 based on Foata normal form. 0/3083 useless extension candidates. Maximal degree in co-relation 7889. Up to 1008 conditions per place. [2023-01-27 17:30:41,263 INFO L137 encePairwiseOnDemand]: 458/473 looper letters, 155 selfloop transitions, 31 changer transitions 7/201 dead transitions. [2023-01-27 17:30:41,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 201 transitions, 1283 flow [2023-01-27 17:30:41,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 17:30:41,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 17:30:41,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2399 transitions. [2023-01-27 17:30:41,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3901447389819483 [2023-01-27 17:30:41,269 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2399 transitions. [2023-01-27 17:30:41,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2399 transitions. [2023-01-27 17:30:41,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:41,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2399 transitions. [2023-01-27 17:30:41,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 184.53846153846155) internal successors, (2399), 13 states have internal predecessors, (2399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:41,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:41,280 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:41,280 INFO L175 Difference]: Start difference. First operand has 113 places, 97 transitions, 618 flow. Second operand 13 states and 2399 transitions. [2023-01-27 17:30:41,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 201 transitions, 1283 flow [2023-01-27 17:30:41,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 201 transitions, 1224 flow, removed 5 selfloop flow, removed 7 redundant places. [2023-01-27 17:30:41,290 INFO L231 Difference]: Finished difference. Result has 123 places, 107 transitions, 707 flow [2023-01-27 17:30:41,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=707, PETRI_PLACES=123, PETRI_TRANSITIONS=107} [2023-01-27 17:30:41,291 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 60 predicate places. [2023-01-27 17:30:41,291 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 107 transitions, 707 flow [2023-01-27 17:30:41,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 174.05882352941177) internal successors, (2959), 17 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:41,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:41,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:41,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-27 17:30:41,293 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:41,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:41,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1056373008, now seen corresponding path program 1 times [2023-01-27 17:30:41,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:41,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122787673] [2023-01-27 17:30:41,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:41,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:42,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:42,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:42,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122787673] [2023-01-27 17:30:42,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122787673] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:42,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:42,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-27 17:30:42,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132164077] [2023-01-27 17:30:42,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:42,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 17:30:42,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:42,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 17:30:42,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-01-27 17:30:42,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 473 [2023-01-27 17:30:42,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 107 transitions, 707 flow. Second operand has 14 states, 14 states have (on average 176.57142857142858) internal successors, (2472), 14 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) [2023-01-27 17:30:42,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:42,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 473 [2023-01-27 17:30:42,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:42,671 INFO L130 PetriNetUnfolder]: 1701/3222 cut-off events. [2023-01-27 17:30:42,671 INFO L131 PetriNetUnfolder]: For 1780/1780 co-relation queries the response was YES. [2023-01-27 17:30:42,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8450 conditions, 3222 events. 1701/3222 cut-off events. For 1780/1780 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 16132 event pairs, 382 based on Foata normal form. 9/3156 useless extension candidates. Maximal degree in co-relation 8418. Up to 1578 conditions per place. [2023-01-27 17:30:42,680 INFO L137 encePairwiseOnDemand]: 457/473 looper letters, 118 selfloop transitions, 37 changer transitions 13/176 dead transitions. [2023-01-27 17:30:42,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 176 transitions, 1228 flow [2023-01-27 17:30:42,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 17:30:42,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 17:30:42,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2397 transitions. [2023-01-27 17:30:42,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38981948284273865 [2023-01-27 17:30:42,683 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2397 transitions. [2023-01-27 17:30:42,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2397 transitions. [2023-01-27 17:30:42,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:42,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2397 transitions. [2023-01-27 17:30:42,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 184.3846153846154) internal successors, (2397), 13 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:42,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:42,693 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:42,693 INFO L175 Difference]: Start difference. First operand has 123 places, 107 transitions, 707 flow. Second operand 13 states and 2397 transitions. [2023-01-27 17:30:42,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 176 transitions, 1228 flow [2023-01-27 17:30:42,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 176 transitions, 1187 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-01-27 17:30:42,702 INFO L231 Difference]: Finished difference. Result has 133 places, 111 transitions, 809 flow [2023-01-27 17:30:42,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=809, PETRI_PLACES=133, PETRI_TRANSITIONS=111} [2023-01-27 17:30:42,702 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 70 predicate places. [2023-01-27 17:30:42,702 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 111 transitions, 809 flow [2023-01-27 17:30:42,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 176.57142857142858) internal successors, (2472), 14 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) [2023-01-27 17:30:42,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:42,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:42,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-27 17:30:42,703 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:42,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:42,703 INFO L85 PathProgramCache]: Analyzing trace with hash -785537338, now seen corresponding path program 2 times [2023-01-27 17:30:42,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:42,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547699175] [2023-01-27 17:30:42,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:42,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:43,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:43,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:43,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547699175] [2023-01-27 17:30:43,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547699175] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:43,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:43,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-27 17:30:43,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227398723] [2023-01-27 17:30:43,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:43,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 17:30:43,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:43,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 17:30:43,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-01-27 17:30:43,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 473 [2023-01-27 17:30:43,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 111 transitions, 809 flow. Second operand has 14 states, 14 states have (on average 176.57142857142858) internal successors, (2472), 14 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) [2023-01-27 17:30:43,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:43,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 473 [2023-01-27 17:30:43,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:43,986 INFO L130 PetriNetUnfolder]: 1717/3252 cut-off events. [2023-01-27 17:30:43,987 INFO L131 PetriNetUnfolder]: For 3000/3000 co-relation queries the response was YES. [2023-01-27 17:30:43,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8994 conditions, 3252 events. 1717/3252 cut-off events. For 3000/3000 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 16403 event pairs, 434 based on Foata normal form. 7/3184 useless extension candidates. Maximal degree in co-relation 8958. Up to 1555 conditions per place. [2023-01-27 17:30:44,000 INFO L137 encePairwiseOnDemand]: 457/473 looper letters, 121 selfloop transitions, 36 changer transitions 13/178 dead transitions. [2023-01-27 17:30:44,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 178 transitions, 1325 flow [2023-01-27 17:30:44,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 17:30:44,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 17:30:44,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2396 transitions. [2023-01-27 17:30:44,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38965685477313383 [2023-01-27 17:30:44,003 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2396 transitions. [2023-01-27 17:30:44,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2396 transitions. [2023-01-27 17:30:44,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:44,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2396 transitions. [2023-01-27 17:30:44,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 184.30769230769232) internal successors, (2396), 13 states have internal predecessors, (2396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:44,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:44,011 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:44,011 INFO L175 Difference]: Start difference. First operand has 133 places, 111 transitions, 809 flow. Second operand 13 states and 2396 transitions. [2023-01-27 17:30:44,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 178 transitions, 1325 flow [2023-01-27 17:30:44,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 178 transitions, 1261 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-01-27 17:30:44,022 INFO L231 Difference]: Finished difference. Result has 139 places, 113 transitions, 867 flow [2023-01-27 17:30:44,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=867, PETRI_PLACES=139, PETRI_TRANSITIONS=113} [2023-01-27 17:30:44,023 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 76 predicate places. [2023-01-27 17:30:44,023 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 113 transitions, 867 flow [2023-01-27 17:30:44,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 176.57142857142858) internal successors, (2472), 14 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) [2023-01-27 17:30:44,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:44,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:44,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-27 17:30:44,024 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:44,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:44,024 INFO L85 PathProgramCache]: Analyzing trace with hash -224439540, now seen corresponding path program 3 times [2023-01-27 17:30:44,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:44,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282464807] [2023-01-27 17:30:44,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:44,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:44,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:44,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:44,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282464807] [2023-01-27 17:30:44,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282464807] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:44,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:44,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-27 17:30:44,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179045519] [2023-01-27 17:30:44,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:44,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 17:30:44,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:44,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 17:30:44,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-01-27 17:30:44,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 473 [2023-01-27 17:30:44,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 113 transitions, 867 flow. Second operand has 14 states, 14 states have (on average 176.57142857142858) internal successors, (2472), 14 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) [2023-01-27 17:30:44,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:44,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 473 [2023-01-27 17:30:44,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:45,525 INFO L130 PetriNetUnfolder]: 1423/2670 cut-off events. [2023-01-27 17:30:45,525 INFO L131 PetriNetUnfolder]: For 3329/3334 co-relation queries the response was YES. [2023-01-27 17:30:45,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7684 conditions, 2670 events. 1423/2670 cut-off events. For 3329/3334 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 12562 event pairs, 405 based on Foata normal form. 7/2607 useless extension candidates. Maximal degree in co-relation 7646. Up to 1091 conditions per place. [2023-01-27 17:30:45,534 INFO L137 encePairwiseOnDemand]: 457/473 looper letters, 121 selfloop transitions, 36 changer transitions 13/178 dead transitions. [2023-01-27 17:30:45,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 178 transitions, 1362 flow [2023-01-27 17:30:45,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 17:30:45,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 17:30:45,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2399 transitions. [2023-01-27 17:30:45,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3901447389819483 [2023-01-27 17:30:45,537 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2399 transitions. [2023-01-27 17:30:45,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2399 transitions. [2023-01-27 17:30:45,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:45,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2399 transitions. [2023-01-27 17:30:45,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 184.53846153846155) internal successors, (2399), 13 states have internal predecessors, (2399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:45,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:45,543 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:45,544 INFO L175 Difference]: Start difference. First operand has 139 places, 113 transitions, 867 flow. Second operand 13 states and 2399 transitions. [2023-01-27 17:30:45,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 178 transitions, 1362 flow [2023-01-27 17:30:45,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 178 transitions, 1274 flow, removed 2 selfloop flow, removed 13 redundant places. [2023-01-27 17:30:45,555 INFO L231 Difference]: Finished difference. Result has 140 places, 111 transitions, 870 flow [2023-01-27 17:30:45,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=870, PETRI_PLACES=140, PETRI_TRANSITIONS=111} [2023-01-27 17:30:45,555 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 77 predicate places. [2023-01-27 17:30:45,556 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 111 transitions, 870 flow [2023-01-27 17:30:45,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 176.57142857142858) internal successors, (2472), 14 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) [2023-01-27 17:30:45,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:45,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:45,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-27 17:30:45,556 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:45,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:45,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1236496857, now seen corresponding path program 1 times [2023-01-27 17:30:45,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:45,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615246935] [2023-01-27 17:30:45,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:45,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:47,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:47,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:47,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615246935] [2023-01-27 17:30:47,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615246935] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:47,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:47,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-01-27 17:30:47,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206384274] [2023-01-27 17:30:47,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:47,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-27 17:30:47,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:47,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-27 17:30:47,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2023-01-27 17:30:47,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 473 [2023-01-27 17:30:47,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 111 transitions, 870 flow. Second operand has 18 states, 18 states have (on average 173.0) internal successors, (3114), 18 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:47,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:47,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 473 [2023-01-27 17:30:47,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:47,871 INFO L130 PetriNetUnfolder]: 1589/2991 cut-off events. [2023-01-27 17:30:47,872 INFO L131 PetriNetUnfolder]: For 3696/3701 co-relation queries the response was YES. [2023-01-27 17:30:47,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8457 conditions, 2991 events. 1589/2991 cut-off events. For 3696/3701 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14197 event pairs, 302 based on Foata normal form. 8/2920 useless extension candidates. Maximal degree in co-relation 8419. Up to 861 conditions per place. [2023-01-27 17:30:47,884 INFO L137 encePairwiseOnDemand]: 457/473 looper letters, 144 selfloop transitions, 34 changer transitions 10/196 dead transitions. [2023-01-27 17:30:47,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 196 transitions, 1455 flow [2023-01-27 17:30:47,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 17:30:47,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 17:30:47,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2374 transitions. [2023-01-27 17:30:47,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38607903724182796 [2023-01-27 17:30:47,886 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2374 transitions. [2023-01-27 17:30:47,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2374 transitions. [2023-01-27 17:30:47,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:47,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2374 transitions. [2023-01-27 17:30:47,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 182.6153846153846) internal successors, (2374), 13 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:47,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:47,894 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:47,894 INFO L175 Difference]: Start difference. First operand has 140 places, 111 transitions, 870 flow. Second operand 13 states and 2374 transitions. [2023-01-27 17:30:47,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 196 transitions, 1455 flow [2023-01-27 17:30:47,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 196 transitions, 1377 flow, removed 1 selfloop flow, removed 11 redundant places. [2023-01-27 17:30:47,908 INFO L231 Difference]: Finished difference. Result has 144 places, 116 transitions, 906 flow [2023-01-27 17:30:47,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=906, PETRI_PLACES=144, PETRI_TRANSITIONS=116} [2023-01-27 17:30:47,908 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 81 predicate places. [2023-01-27 17:30:47,908 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 116 transitions, 906 flow [2023-01-27 17:30:47,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 173.0) internal successors, (3114), 18 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:47,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:47,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:47,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-27 17:30:47,909 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:47,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:47,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1142379959, now seen corresponding path program 1 times [2023-01-27 17:30:47,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:47,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558714057] [2023-01-27 17:30:47,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:47,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:49,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:49,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:49,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558714057] [2023-01-27 17:30:49,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558714057] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:49,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:49,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-01-27 17:30:49,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349119171] [2023-01-27 17:30:49,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:49,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-27 17:30:49,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:49,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-27 17:30:49,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2023-01-27 17:30:49,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 473 [2023-01-27 17:30:49,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 116 transitions, 906 flow. Second operand has 23 states, 23 states have (on average 144.6086956521739) internal successors, (3326), 23 states have internal predecessors, (3326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:49,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:49,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 473 [2023-01-27 17:30:49,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:52,187 INFO L130 PetriNetUnfolder]: 1890/3589 cut-off events. [2023-01-27 17:30:52,188 INFO L131 PetriNetUnfolder]: For 4289/4295 co-relation queries the response was YES. [2023-01-27 17:30:52,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10272 conditions, 3589 events. 1890/3589 cut-off events. For 4289/4295 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 18092 event pairs, 750 based on Foata normal form. 82/3580 useless extension candidates. Maximal degree in co-relation 10231. Up to 2761 conditions per place. [2023-01-27 17:30:52,232 INFO L137 encePairwiseOnDemand]: 446/473 looper letters, 176 selfloop transitions, 57 changer transitions 32/273 dead transitions. [2023-01-27 17:30:52,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 273 transitions, 2034 flow [2023-01-27 17:30:52,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-01-27 17:30:52,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-01-27 17:30:52,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4801 transitions. [2023-01-27 17:30:52,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31719080338266387 [2023-01-27 17:30:52,243 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4801 transitions. [2023-01-27 17:30:52,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4801 transitions. [2023-01-27 17:30:52,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:52,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4801 transitions. [2023-01-27 17:30:52,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 150.03125) internal successors, (4801), 32 states have internal predecessors, (4801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:52,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 473.0) internal successors, (15609), 33 states have internal predecessors, (15609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:52,282 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 473.0) internal successors, (15609), 33 states have internal predecessors, (15609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:52,282 INFO L175 Difference]: Start difference. First operand has 144 places, 116 transitions, 906 flow. Second operand 32 states and 4801 transitions. [2023-01-27 17:30:52,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 273 transitions, 2034 flow [2023-01-27 17:30:52,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 273 transitions, 1949 flow, removed 1 selfloop flow, removed 9 redundant places. [2023-01-27 17:30:52,316 INFO L231 Difference]: Finished difference. Result has 192 places, 171 transitions, 1437 flow [2023-01-27 17:30:52,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1437, PETRI_PLACES=192, PETRI_TRANSITIONS=171} [2023-01-27 17:30:52,317 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 129 predicate places. [2023-01-27 17:30:52,317 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 171 transitions, 1437 flow [2023-01-27 17:30:52,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 144.6086956521739) internal successors, (3326), 23 states have internal predecessors, (3326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:52,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:52,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:52,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-27 17:30:52,327 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:52,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:52,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1972154307, now seen corresponding path program 2 times [2023-01-27 17:30:52,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:52,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046673987] [2023-01-27 17:30:52,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:52,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:54,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:54,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:54,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046673987] [2023-01-27 17:30:54,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046673987] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:54,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:54,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-01-27 17:30:54,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782933318] [2023-01-27 17:30:54,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:54,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-27 17:30:54,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:54,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-27 17:30:54,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2023-01-27 17:30:54,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 473 [2023-01-27 17:30:54,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 171 transitions, 1437 flow. Second operand has 23 states, 23 states have (on average 144.6086956521739) internal successors, (3326), 23 states have internal predecessors, (3326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:54,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:54,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 473 [2023-01-27 17:30:54,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:57,521 INFO L130 PetriNetUnfolder]: 2111/4050 cut-off events. [2023-01-27 17:30:57,521 INFO L131 PetriNetUnfolder]: For 53559/53565 co-relation queries the response was YES. [2023-01-27 17:30:57,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18669 conditions, 4050 events. 2111/4050 cut-off events. For 53559/53565 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 21493 event pairs, 650 based on Foata normal form. 86/4120 useless extension candidates. Maximal degree in co-relation 18602. Up to 3128 conditions per place. [2023-01-27 17:30:57,541 INFO L137 encePairwiseOnDemand]: 446/473 looper letters, 223 selfloop transitions, 58 changer transitions 33/322 dead transitions. [2023-01-27 17:30:57,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 322 transitions, 3052 flow [2023-01-27 17:30:57,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-01-27 17:30:57,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-01-27 17:30:57,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4790 transitions. [2023-01-27 17:30:57,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31646405919661735 [2023-01-27 17:30:57,545 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4790 transitions. [2023-01-27 17:30:57,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4790 transitions. [2023-01-27 17:30:57,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:57,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4790 transitions. [2023-01-27 17:30:57,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 149.6875) internal successors, (4790), 32 states have internal predecessors, (4790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:57,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 473.0) internal successors, (15609), 33 states have internal predecessors, (15609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:57,560 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 473.0) internal successors, (15609), 33 states have internal predecessors, (15609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:57,560 INFO L175 Difference]: Start difference. First operand has 192 places, 171 transitions, 1437 flow. Second operand 32 states and 4790 transitions. [2023-01-27 17:30:57,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 322 transitions, 3052 flow [2023-01-27 17:30:57,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 322 transitions, 3034 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-01-27 17:30:57,615 INFO L231 Difference]: Finished difference. Result has 245 places, 220 transitions, 2179 flow [2023-01-27 17:30:57,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2179, PETRI_PLACES=245, PETRI_TRANSITIONS=220} [2023-01-27 17:30:57,616 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 182 predicate places. [2023-01-27 17:30:57,616 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 220 transitions, 2179 flow [2023-01-27 17:30:57,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 144.6086956521739) internal successors, (3326), 23 states have internal predecessors, (3326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:57,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:57,616 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:57,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-27 17:30:57,616 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:57,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:57,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1706648059, now seen corresponding path program 3 times [2023-01-27 17:30:57,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:57,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176311066] [2023-01-27 17:30:57,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:57,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:59,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:59,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:59,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176311066] [2023-01-27 17:30:59,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176311066] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:59,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:59,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-01-27 17:30:59,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85204825] [2023-01-27 17:30:59,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:59,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-27 17:30:59,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:59,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-27 17:30:59,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2023-01-27 17:30:59,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 473 [2023-01-27 17:30:59,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 220 transitions, 2179 flow. Second operand has 23 states, 23 states have (on average 144.6086956521739) internal successors, (3326), 23 states have internal predecessors, (3326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:59,425 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:59,425 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 473 [2023-01-27 17:30:59,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:31:02,005 INFO L130 PetriNetUnfolder]: 2319/4474 cut-off events. [2023-01-27 17:31:02,005 INFO L131 PetriNetUnfolder]: For 184733/184751 co-relation queries the response was YES. [2023-01-27 17:31:02,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27207 conditions, 4474 events. 2319/4474 cut-off events. For 184733/184751 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 24650 event pairs, 742 based on Foata normal form. 92/4549 useless extension candidates. Maximal degree in co-relation 27113. Up to 3321 conditions per place. [2023-01-27 17:31:02,039 INFO L137 encePairwiseOnDemand]: 447/473 looper letters, 257 selfloop transitions, 71 changer transitions 35/371 dead transitions. [2023-01-27 17:31:02,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 371 transitions, 4400 flow [2023-01-27 17:31:02,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-01-27 17:31:02,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-01-27 17:31:02,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 4941 transitions. [2023-01-27 17:31:02,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.316548145300788 [2023-01-27 17:31:02,044 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 4941 transitions. [2023-01-27 17:31:02,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 4941 transitions. [2023-01-27 17:31:02,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:31:02,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 4941 transitions. [2023-01-27 17:31:02,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 149.72727272727272) internal successors, (4941), 33 states have internal predecessors, (4941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:31:02,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 473.0) internal successors, (16082), 34 states have internal predecessors, (16082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:31:02,058 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 473.0) internal successors, (16082), 34 states have internal predecessors, (16082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:31:02,058 INFO L175 Difference]: Start difference. First operand has 245 places, 220 transitions, 2179 flow. Second operand 33 states and 4941 transitions. [2023-01-27 17:31:02,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 371 transitions, 4400 flow [2023-01-27 17:31:02,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 371 transitions, 4230 flow, removed 85 selfloop flow, removed 0 redundant places. [2023-01-27 17:31:02,225 INFO L231 Difference]: Finished difference. Result has 296 places, 266 transitions, 2907 flow [2023-01-27 17:31:02,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=2009, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2907, PETRI_PLACES=296, PETRI_TRANSITIONS=266} [2023-01-27 17:31:02,225 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 233 predicate places. [2023-01-27 17:31:02,225 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 266 transitions, 2907 flow [2023-01-27 17:31:02,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 144.6086956521739) internal successors, (3326), 23 states have internal predecessors, (3326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:31:02,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:31:02,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:31:02,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-01-27 17:31:02,226 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:31:02,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:31:02,226 INFO L85 PathProgramCache]: Analyzing trace with hash 963217069, now seen corresponding path program 4 times [2023-01-27 17:31:02,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:31:02,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188089001] [2023-01-27 17:31:02,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:31:02,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:31:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2023-01-27 17:43:09,445 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 17:43:09,449 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 17:43:09,449 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 17:43:09,450 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 17:43:09,451 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 17:43:09,451 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 17:43:09,451 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 17:43:09,452 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 17:43:09,452 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 17:43:09,452 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 17:43:09,453 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 17:43:09,453 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 17:43:09,453 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 17:43:09,453 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 17:43:09,454 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 17:43:09,454 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-01-27 17:43:09,457 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-01-27 17:43:09,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-01-27 17:43:09,457 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 41 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 39 interpolants. [2023-01-27 17:43:09,458 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-01-27 17:43:09,458 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-01-27 17:43:09,458 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-01-27 17:43:09,458 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-01-27 17:43:09,459 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-01-27 17:43:09,459 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-01-27 17:43:09,459 INFO L445 BasicCegarLoop]: Path program histogram: [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:43:09,462 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 17:43:09,462 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 17:43:09,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 05:43:09 BasicIcfg [2023-01-27 17:43:09,464 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 17:43:09,464 INFO L158 Benchmark]: Toolchain (without parser) took 768955.65ms. Allocated memory was 457.2MB in the beginning and 6.5GB in the end (delta: 6.0GB). Free memory was 414.9MB in the beginning and 4.9GB in the end (delta: -4.4GB). Peak memory consumption was 7.0GB. Max. memory is 16.0GB. [2023-01-27 17:43:09,464 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 308.3MB. Free memory is still 256.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 17:43:09,464 INFO L158 Benchmark]: CACSL2BoogieTranslator took 422.15ms. Allocated memory is still 457.2MB. Free memory was 414.6MB in the beginning and 384.8MB in the end (delta: 29.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-01-27 17:43:09,465 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.05ms. Allocated memory is still 457.2MB. Free memory was 384.8MB in the beginning and 381.5MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 17:43:09,465 INFO L158 Benchmark]: Boogie Preprocessor took 34.29ms. Allocated memory is still 457.2MB. Free memory was 381.5MB in the beginning and 379.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 17:43:09,465 INFO L158 Benchmark]: RCFGBuilder took 560.45ms. Allocated memory is still 457.2MB. Free memory was 379.3MB in the beginning and 415.7MB in the end (delta: -36.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-01-27 17:43:09,465 INFO L158 Benchmark]: TraceAbstraction took 767875.85ms. Allocated memory was 457.2MB in the beginning and 6.5GB in the end (delta: 6.0GB). Free memory was 415.7MB in the beginning and 4.9GB in the end (delta: -4.4GB). Peak memory consumption was 7.0GB. Max. memory is 16.0GB. [2023-01-27 17:43:09,466 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 308.3MB. Free memory is still 256.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 422.15ms. Allocated memory is still 457.2MB. Free memory was 414.6MB in the beginning and 384.8MB in the end (delta: 29.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 59.05ms. Allocated memory is still 457.2MB. Free memory was 384.8MB in the beginning and 381.5MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 34.29ms. Allocated memory is still 457.2MB. Free memory was 381.5MB in the beginning and 379.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 560.45ms. Allocated memory is still 457.2MB. Free memory was 379.3MB in the beginning and 415.7MB in the end (delta: -36.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 767875.85ms. Allocated memory was 457.2MB in the beginning and 6.5GB in the end (delta: 6.0GB). Free memory was 415.7MB in the beginning and 4.9GB in the end (delta: -4.4GB). Peak memory consumption was 7.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.2s, 239 PlacesBefore, 63 PlacesAfterwards, 247 TransitionsBefore, 66 TransitionsAfterwards, 15864 CoEnabledTransitionPairs, 7 FixpointIterations, 60 TrivialSequentialCompositions, 125 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 17 ConcurrentYvCompositions, 5 ChoiceCompositions, 215 TotalNumberOfCompositions, 33075 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16387, independent: 15763, independent conditional: 0, independent unconditional: 15763, dependent: 624, dependent conditional: 0, dependent unconditional: 624, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8632, independent: 8496, independent conditional: 0, independent unconditional: 8496, dependent: 136, dependent conditional: 0, dependent unconditional: 136, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 16387, independent: 7267, independent conditional: 0, independent unconditional: 7267, dependent: 488, dependent conditional: 0, dependent unconditional: 488, unknown: 8632, unknown conditional: 0, unknown unconditional: 8632] , Statistics on independence cache: Total cache size (in pairs): 481, Positive cache size: 435, Positive conditional cache size: 0, Positive unconditional cache size: 435, Negative cache size: 46, Negative conditional cache size: 0, Negative unconditional cache size: 46, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1043]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 41 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 39 interpolants. - TimeoutResultAtElement [Line: 1059]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 41 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 39 interpolants. - TimeoutResultAtElement [Line: 1062]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 41 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 39 interpolants. - TimeoutResultAtElement [Line: 1063]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 41 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 39 interpolants. - TimeoutResultAtElement [Line: 1032]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 41 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 39 interpolants. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 407 locations, 7 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: 767.8s, OverallIterations: 23, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 18.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2283 SdHoareTripleChecker+Valid, 7.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2283 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 5.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 339 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13606 IncrementalHoareTripleChecker+Invalid, 13945 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 339 mSolverCounterUnsat, 9 mSDtfsCounter, 13606 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 412 GetRequests, 63 SyntacticMatches, 3 SemanticMatches, 346 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1914 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2907occurred in iteration=22, InterpolantAutomatonStates: 256, 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, 0.4s SatisfiabilityAnalysisTime, 16.1s InterpolantComputationTime, 544 NumberOfCodeBlocks, 544 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 522 ConstructedInterpolants, 0 QuantifiedInterpolants, 12517 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown