./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 01:49:32,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 01:49:32,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 01:49:33,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 01:49:33,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 01:49:33,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 01:49:33,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 01:49:33,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 01:49:33,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 01:49:33,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 01:49:33,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 01:49:33,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 01:49:33,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 01:49:33,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 01:49:33,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 01:49:33,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 01:49:33,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 01:49:33,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 01:49:33,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 01:49:33,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 01:49:33,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 01:49:33,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 01:49:33,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 01:49:33,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 01:49:33,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 01:49:33,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 01:49:33,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 01:49:33,085 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 01:49:33,086 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 01:49:33,087 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 01:49:33,087 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 01:49:33,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 01:49:33,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 01:49:33,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 01:49:33,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 01:49:33,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 01:49:33,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 01:49:33,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 01:49:33,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 01:49:33,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 01:49:33,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 01:49:33,098 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 01:49:33,130 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 01:49:33,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 01:49:33,131 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 01:49:33,131 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 01:49:33,132 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 01:49:33,132 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 01:49:33,133 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 01:49:33,133 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 01:49:33,133 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 01:49:33,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 01:49:33,133 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 01:49:33,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 01:49:33,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 01:49:33,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 01:49:33,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 01:49:33,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 01:49:33,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 01:49:33,135 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 01:49:33,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 01:49:33,136 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 01:49:33,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 01:49:33,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 01:49:33,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 01:49:33,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 01:49:33,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:49:33,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 01:49:33,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 01:49:33,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 01:49:33,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 01:49:33,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 01:49:33,143 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 01:49:33,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 01:49:33,143 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 01:49:33,144 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 01:49:33,144 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 01:49:33,144 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 01:49:33,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 01:49:33,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 01:49:33,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 01:49:33,447 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 01:49:33,447 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 01:49:33,448 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c [2023-08-31 01:49:34,491 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 01:49:34,725 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 01:49:34,725 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c [2023-08-31 01:49:34,735 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46a448f76/a8d1307bed674f5188923642c659c3e8/FLAG775a471b2 [2023-08-31 01:49:34,750 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46a448f76/a8d1307bed674f5188923642c659c3e8 [2023-08-31 01:49:34,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 01:49:34,753 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 01:49:34,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 01:49:34,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 01:49:34,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 01:49:34,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:49:34" (1/1) ... [2023-08-31 01:49:34,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c8944b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:49:34, skipping insertion in model container [2023-08-31 01:49:34,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:49:34" (1/1) ... [2023-08-31 01:49:34,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 01:49:34,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 01:49:34,921 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c[5426,5439] [2023-08-31 01:49:34,936 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:49:34,949 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 01:49:34,990 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c[5426,5439] [2023-08-31 01:49:34,996 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:49:35,007 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 01:49:35,007 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 01:49:35,012 INFO L208 MainTranslator]: Completed translation [2023-08-31 01:49:35,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:49:35 WrapperNode [2023-08-31 01:49:35,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 01:49:35,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 01:49:35,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 01:49:35,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 01:49:35,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:49:35" (1/1) ... [2023-08-31 01:49:35,038 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:49:35" (1/1) ... [2023-08-31 01:49:35,077 INFO L138 Inliner]: procedures = 22, calls = 110, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 265 [2023-08-31 01:49:35,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 01:49:35,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 01:49:35,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 01:49:35,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 01:49:35,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:49:35" (1/1) ... [2023-08-31 01:49:35,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:49:35" (1/1) ... [2023-08-31 01:49:35,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:49:35" (1/1) ... [2023-08-31 01:49:35,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:49:35" (1/1) ... [2023-08-31 01:49:35,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:49:35" (1/1) ... [2023-08-31 01:49:35,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:49:35" (1/1) ... [2023-08-31 01:49:35,121 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:49:35" (1/1) ... [2023-08-31 01:49:35,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:49:35" (1/1) ... [2023-08-31 01:49:35,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 01:49:35,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 01:49:35,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 01:49:35,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 01:49:35,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:49:35" (1/1) ... [2023-08-31 01:49:35,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:49:35,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:49:35,159 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) [2023-08-31 01:49:35,198 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 [2023-08-31 01:49:35,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 01:49:35,210 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 01:49:35,210 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 01:49:35,211 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 01:49:35,212 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 01:49:35,212 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-31 01:49:35,212 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-31 01:49:35,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 01:49:35,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 01:49:35,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 01:49:35,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 01:49:35,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 01:49:35,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 01:49:35,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 01:49:35,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 01:49:35,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 01:49:35,215 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 01:49:35,352 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 01:49:35,354 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 01:49:35,690 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 01:49:35,879 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 01:49:35,892 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 01:49:35,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:49:35 BoogieIcfgContainer [2023-08-31 01:49:35,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 01:49:35,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 01:49:35,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 01:49:35,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 01:49:35,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 01:49:34" (1/3) ... [2023-08-31 01:49:35,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@398774c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:49:35, skipping insertion in model container [2023-08-31 01:49:35,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:49:35" (2/3) ... [2023-08-31 01:49:35,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@398774c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:49:35, skipping insertion in model container [2023-08-31 01:49:35,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:49:35" (3/3) ... [2023-08-31 01:49:35,903 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2023-08-31 01:49:35,909 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 01:49:35,924 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 01:49:35,925 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 01:49:35,925 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 01:49:35,998 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 01:49:36,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 155 transitions, 334 flow [2023-08-31 01:49:36,138 INFO L130 PetriNetUnfolder]: 2/152 cut-off events. [2023-08-31 01:49:36,138 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:49:36,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 152 events. 2/152 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 106 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 112. Up to 2 conditions per place. [2023-08-31 01:49:36,143 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 155 transitions, 334 flow [2023-08-31 01:49:36,153 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 142 transitions, 302 flow [2023-08-31 01:49:36,156 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 01:49:36,164 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 150 places, 142 transitions, 302 flow [2023-08-31 01:49:36,167 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 150 places, 142 transitions, 302 flow [2023-08-31 01:49:36,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 142 transitions, 302 flow [2023-08-31 01:49:36,206 INFO L130 PetriNetUnfolder]: 2/142 cut-off events. [2023-08-31 01:49:36,206 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:49:36,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 142 events. 2/142 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 105 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 112. Up to 2 conditions per place. [2023-08-31 01:49:36,209 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2023-08-31 01:49:40,003 INFO L134 LiptonReduction]: Checked pairs total: 20861 [2023-08-31 01:49:40,004 INFO L136 LiptonReduction]: Total number of compositions: 100 [2023-08-31 01:49:40,022 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 01:49:40,027 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=true, 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;@3daded8f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 01:49:40,027 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-31 01:49:40,036 INFO L130 PetriNetUnfolder]: 0/48 cut-off events. [2023-08-31 01:49:40,037 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:49:40,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:40,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:40,038 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 1 more)] === [2023-08-31 01:49:40,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:40,042 INFO L85 PathProgramCache]: Analyzing trace with hash -685701629, now seen corresponding path program 1 times [2023-08-31 01:49:40,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:40,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969918299] [2023-08-31 01:49:40,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:40,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:40,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:40,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:40,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969918299] [2023-08-31 01:49:40,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969918299] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:49:40,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:49:40,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:49:40,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156073406] [2023-08-31 01:49:40,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:49:40,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:49:40,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:40,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:49:40,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:49:41,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-31 01:49:41,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 116 flow. Second operand has 9 states, 9 states have (on average 121.11111111111111) internal successors, (1090), 9 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:41,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:41,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-31 01:49:41,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:42,075 INFO L130 PetriNetUnfolder]: 4666/7168 cut-off events. [2023-08-31 01:49:42,075 INFO L131 PetriNetUnfolder]: For 394/394 co-relation queries the response was YES. [2023-08-31 01:49:42,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14639 conditions, 7168 events. 4666/7168 cut-off events. For 394/394 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 41262 event pairs, 1653 based on Foata normal form. 1/7108 useless extension candidates. Maximal degree in co-relation 12818. Up to 2475 conditions per place. [2023-08-31 01:49:42,118 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 147 selfloop transitions, 15 changer transitions 19/193 dead transitions. [2023-08-31 01:49:42,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 193 transitions, 820 flow [2023-08-31 01:49:42,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 01:49:42,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 01:49:42,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1469 transitions. [2023-08-31 01:49:42,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5237076648841354 [2023-08-31 01:49:42,137 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1469 transitions. [2023-08-31 01:49:42,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1469 transitions. [2023-08-31 01:49:42,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:42,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1469 transitions. [2023-08-31 01:49:42,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 133.54545454545453) internal successors, (1469), 11 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:42,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:42,158 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:42,159 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 116 flow. Second operand 11 states and 1469 transitions. [2023-08-31 01:49:42,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 193 transitions, 820 flow [2023-08-31 01:49:42,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 193 transitions, 772 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-31 01:49:42,172 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 196 flow [2023-08-31 01:49:42,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=196, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2023-08-31 01:49:42,176 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 8 predicate places. [2023-08-31 01:49:42,177 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 196 flow [2023-08-31 01:49:42,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 121.11111111111111) internal successors, (1090), 9 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:42,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:42,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:42,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 01:49:42,179 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:49:42,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:42,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1882952335, now seen corresponding path program 2 times [2023-08-31 01:49:42,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:42,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037869670] [2023-08-31 01:49:42,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:42,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:42,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:42,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:42,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037869670] [2023-08-31 01:49:42,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037869670] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:49:42,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:49:42,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:49:42,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267713390] [2023-08-31 01:49:42,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:49:42,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:49:42,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:42,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:49:42,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:49:42,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-31 01:49:42,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 196 flow. Second operand has 7 states, 7 states have (on average 122.14285714285714) internal successors, (855), 7 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:42,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:42,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-31 01:49:42,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:44,405 INFO L130 PetriNetUnfolder]: 10227/17591 cut-off events. [2023-08-31 01:49:44,406 INFO L131 PetriNetUnfolder]: For 290/298 co-relation queries the response was YES. [2023-08-31 01:49:44,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35463 conditions, 17591 events. 10227/17591 cut-off events. For 290/298 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 136588 event pairs, 2447 based on Foata normal form. 190/17429 useless extension candidates. Maximal degree in co-relation 35441. Up to 6390 conditions per place. [2023-08-31 01:49:44,511 INFO L137 encePairwiseOnDemand]: 241/255 looper letters, 135 selfloop transitions, 37 changer transitions 0/201 dead transitions. [2023-08-31 01:49:44,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 201 transitions, 820 flow [2023-08-31 01:49:44,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:49:44,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:49:44,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1228 transitions. [2023-08-31 01:49:44,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5350762527233115 [2023-08-31 01:49:44,516 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1228 transitions. [2023-08-31 01:49:44,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1228 transitions. [2023-08-31 01:49:44,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:44,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1228 transitions. [2023-08-31 01:49:44,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 136.44444444444446) internal successors, (1228), 9 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:44,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:44,524 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:44,524 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 196 flow. Second operand 9 states and 1228 transitions. [2023-08-31 01:49:44,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 201 transitions, 820 flow [2023-08-31 01:49:44,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 201 transitions, 818 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-31 01:49:44,536 INFO L231 Difference]: Finished difference. Result has 80 places, 104 transitions, 460 flow [2023-08-31 01:49:44,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=460, PETRI_PLACES=80, PETRI_TRANSITIONS=104} [2023-08-31 01:49:44,537 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 21 predicate places. [2023-08-31 01:49:44,538 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 104 transitions, 460 flow [2023-08-31 01:49:44,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 122.14285714285714) internal successors, (855), 7 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:44,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:44,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:44,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 01:49:44,540 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:49:44,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:44,542 INFO L85 PathProgramCache]: Analyzing trace with hash -670871719, now seen corresponding path program 3 times [2023-08-31 01:49:44,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:44,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346099871] [2023-08-31 01:49:44,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:44,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:44,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:44,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:44,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346099871] [2023-08-31 01:49:44,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346099871] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:49:44,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:49:44,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:49:44,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732630325] [2023-08-31 01:49:44,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:49:44,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 01:49:44,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:44,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 01:49:44,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 01:49:44,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 255 [2023-08-31 01:49:44,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 104 transitions, 460 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:44,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:44,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 255 [2023-08-31 01:49:44,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:46,021 INFO L130 PetriNetUnfolder]: 7985/14097 cut-off events. [2023-08-31 01:49:46,022 INFO L131 PetriNetUnfolder]: For 9371/9798 co-relation queries the response was YES. [2023-08-31 01:49:46,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36629 conditions, 14097 events. 7985/14097 cut-off events. For 9371/9798 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 109271 event pairs, 5244 based on Foata normal form. 450/13895 useless extension candidates. Maximal degree in co-relation 26097. Up to 10070 conditions per place. [2023-08-31 01:49:46,115 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 84 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-08-31 01:49:46,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 131 transitions, 756 flow [2023-08-31 01:49:46,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 01:49:46,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 01:49:46,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2023-08-31 01:49:46,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5633986928104575 [2023-08-31 01:49:46,118 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2023-08-31 01:49:46,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2023-08-31 01:49:46,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:46,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2023-08-31 01:49:46,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:46,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:46,123 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:46,123 INFO L175 Difference]: Start difference. First operand has 80 places, 104 transitions, 460 flow. Second operand 3 states and 431 transitions. [2023-08-31 01:49:46,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 131 transitions, 756 flow [2023-08-31 01:49:46,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 131 transitions, 756 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 01:49:46,165 INFO L231 Difference]: Finished difference. Result has 83 places, 103 transitions, 464 flow [2023-08-31 01:49:46,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=83, PETRI_TRANSITIONS=103} [2023-08-31 01:49:46,165 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 24 predicate places. [2023-08-31 01:49:46,166 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 103 transitions, 464 flow [2023-08-31 01:49:46,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:46,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:46,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:46,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 01:49:46,167 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:49:46,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:46,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1911915813, now seen corresponding path program 4 times [2023-08-31 01:49:46,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:46,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735275597] [2023-08-31 01:49:46,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:46,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:46,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:46,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:46,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735275597] [2023-08-31 01:49:46,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735275597] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:49:46,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:49:46,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:49:46,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007060976] [2023-08-31 01:49:46,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:49:46,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 01:49:46,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:46,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 01:49:46,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 01:49:46,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 255 [2023-08-31 01:49:46,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 103 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:46,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:46,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 255 [2023-08-31 01:49:46,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:47,621 INFO L130 PetriNetUnfolder]: 8352/15087 cut-off events. [2023-08-31 01:49:47,621 INFO L131 PetriNetUnfolder]: For 10572/10975 co-relation queries the response was YES. [2023-08-31 01:49:47,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39577 conditions, 15087 events. 8352/15087 cut-off events. For 10572/10975 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 121387 event pairs, 5810 based on Foata normal form. 451/14808 useless extension candidates. Maximal degree in co-relation 27830. Up to 10310 conditions per place. [2023-08-31 01:49:47,705 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 85 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2023-08-31 01:49:47,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 132 transitions, 766 flow [2023-08-31 01:49:47,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 01:49:47,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 01:49:47,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2023-08-31 01:49:47,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5633986928104575 [2023-08-31 01:49:47,707 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2023-08-31 01:49:47,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2023-08-31 01:49:47,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:47,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2023-08-31 01:49:47,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:47,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:47,711 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:47,711 INFO L175 Difference]: Start difference. First operand has 83 places, 103 transitions, 464 flow. Second operand 3 states and 431 transitions. [2023-08-31 01:49:47,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 132 transitions, 766 flow [2023-08-31 01:49:47,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 132 transitions, 762 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 01:49:47,767 INFO L231 Difference]: Finished difference. Result has 84 places, 103 transitions, 470 flow [2023-08-31 01:49:47,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=470, PETRI_PLACES=84, PETRI_TRANSITIONS=103} [2023-08-31 01:49:47,769 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 25 predicate places. [2023-08-31 01:49:47,770 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 103 transitions, 470 flow [2023-08-31 01:49:47,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:47,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:47,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:47,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 01:49:47,771 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:49:47,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:47,772 INFO L85 PathProgramCache]: Analyzing trace with hash -909351973, now seen corresponding path program 5 times [2023-08-31 01:49:47,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:47,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201555719] [2023-08-31 01:49:47,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:47,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:47,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:47,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:47,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201555719] [2023-08-31 01:49:47,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201555719] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:49:47,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:49:47,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:49:47,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039460391] [2023-08-31 01:49:47,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:49:47,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 01:49:47,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:47,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 01:49:47,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 01:49:47,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 255 [2023-08-31 01:49:47,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 103 transitions, 470 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:47,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:47,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 255 [2023-08-31 01:49:47,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:49,024 INFO L130 PetriNetUnfolder]: 8350/15312 cut-off events. [2023-08-31 01:49:49,025 INFO L131 PetriNetUnfolder]: For 11435/11808 co-relation queries the response was YES. [2023-08-31 01:49:49,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41560 conditions, 15312 events. 8350/15312 cut-off events. For 11435/11808 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 123633 event pairs, 5801 based on Foata normal form. 366/14902 useless extension candidates. Maximal degree in co-relation 28969. Up to 10791 conditions per place. [2023-08-31 01:49:49,225 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 82 selfloop transitions, 2 changer transitions 0/129 dead transitions. [2023-08-31 01:49:49,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 129 transitions, 754 flow [2023-08-31 01:49:49,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 01:49:49,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 01:49:49,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2023-08-31 01:49:49,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5633986928104575 [2023-08-31 01:49:49,228 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2023-08-31 01:49:49,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2023-08-31 01:49:49,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:49,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2023-08-31 01:49:49,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:49,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:49,231 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:49,231 INFO L175 Difference]: Start difference. First operand has 84 places, 103 transitions, 470 flow. Second operand 3 states and 431 transitions. [2023-08-31 01:49:49,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 129 transitions, 754 flow [2023-08-31 01:49:49,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 129 transitions, 750 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 01:49:49,270 INFO L231 Difference]: Finished difference. Result has 85 places, 103 transitions, 476 flow [2023-08-31 01:49:49,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=85, PETRI_TRANSITIONS=103} [2023-08-31 01:49:49,273 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 26 predicate places. [2023-08-31 01:49:49,273 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 103 transitions, 476 flow [2023-08-31 01:49:49,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:49,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:49,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:49,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 01:49:49,274 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:49:49,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:49,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1824534595, now seen corresponding path program 6 times [2023-08-31 01:49:49,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:49,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567771557] [2023-08-31 01:49:49,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:49,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:49,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:49,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:49,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567771557] [2023-08-31 01:49:49,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567771557] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:49:49,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:49:49,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:49:49,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655447945] [2023-08-31 01:49:49,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:49:49,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:49:49,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:49,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:49:49,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:49:49,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-31 01:49:49,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 103 transitions, 476 flow. Second operand has 9 states, 9 states have (on average 121.11111111111111) internal successors, (1090), 9 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:49,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:49,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-31 01:49:49,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:52,228 INFO L130 PetriNetUnfolder]: 18082/28043 cut-off events. [2023-08-31 01:49:52,228 INFO L131 PetriNetUnfolder]: For 22570/23192 co-relation queries the response was YES. [2023-08-31 01:49:52,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82612 conditions, 28043 events. 18082/28043 cut-off events. For 22570/23192 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 193012 event pairs, 6131 based on Foata normal form. 506/28130 useless extension candidates. Maximal degree in co-relation 48840. Up to 7851 conditions per place. [2023-08-31 01:49:52,384 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 262 selfloop transitions, 29 changer transitions 41/357 dead transitions. [2023-08-31 01:49:52,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 357 transitions, 2256 flow [2023-08-31 01:49:52,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 01:49:52,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 01:49:52,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1485 transitions. [2023-08-31 01:49:52,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2023-08-31 01:49:52,389 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1485 transitions. [2023-08-31 01:49:52,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1485 transitions. [2023-08-31 01:49:52,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:52,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1485 transitions. [2023-08-31 01:49:52,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 135.0) internal successors, (1485), 11 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:52,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:52,397 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:52,397 INFO L175 Difference]: Start difference. First operand has 85 places, 103 transitions, 476 flow. Second operand 11 states and 1485 transitions. [2023-08-31 01:49:52,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 357 transitions, 2256 flow [2023-08-31 01:49:52,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 357 transitions, 2252 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 01:49:52,461 INFO L231 Difference]: Finished difference. Result has 99 places, 128 transitions, 717 flow [2023-08-31 01:49:52,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=717, PETRI_PLACES=99, PETRI_TRANSITIONS=128} [2023-08-31 01:49:52,462 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 40 predicate places. [2023-08-31 01:49:52,462 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 128 transitions, 717 flow [2023-08-31 01:49:52,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 121.11111111111111) internal successors, (1090), 9 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:52,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:52,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:52,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 01:49:52,464 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:49:52,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:52,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1285316251, now seen corresponding path program 7 times [2023-08-31 01:49:52,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:52,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163033278] [2023-08-31 01:49:52,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:52,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:52,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:52,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:52,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163033278] [2023-08-31 01:49:52,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163033278] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:49:52,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:49:52,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-31 01:49:52,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021852211] [2023-08-31 01:49:52,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:49:52,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:49:52,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:52,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:49:52,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:49:52,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-31 01:49:52,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 128 transitions, 717 flow. Second operand has 7 states, 7 states have (on average 122.14285714285714) internal successors, (855), 7 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:52,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:52,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-31 01:49:52,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:55,273 INFO L130 PetriNetUnfolder]: 13508/24317 cut-off events. [2023-08-31 01:49:55,274 INFO L131 PetriNetUnfolder]: For 22777/23131 co-relation queries the response was YES. [2023-08-31 01:49:55,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72127 conditions, 24317 events. 13508/24317 cut-off events. For 22777/23131 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 202154 event pairs, 6832 based on Foata normal form. 206/23526 useless extension candidates. Maximal degree in co-relation 72055. Up to 16654 conditions per place. [2023-08-31 01:49:55,377 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 126 selfloop transitions, 28 changer transitions 0/209 dead transitions. [2023-08-31 01:49:55,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 209 transitions, 1375 flow [2023-08-31 01:49:55,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:49:55,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:49:55,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 919 transitions. [2023-08-31 01:49:55,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148459383753501 [2023-08-31 01:49:55,381 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 919 transitions. [2023-08-31 01:49:55,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 919 transitions. [2023-08-31 01:49:55,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:55,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 919 transitions. [2023-08-31 01:49:55,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 131.28571428571428) internal successors, (919), 7 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:55,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:55,387 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:55,387 INFO L175 Difference]: Start difference. First operand has 99 places, 128 transitions, 717 flow. Second operand 7 states and 919 transitions. [2023-08-31 01:49:55,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 209 transitions, 1375 flow [2023-08-31 01:49:55,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 209 transitions, 1369 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-31 01:49:55,557 INFO L231 Difference]: Finished difference. Result has 107 places, 155 transitions, 970 flow [2023-08-31 01:49:55,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=970, PETRI_PLACES=107, PETRI_TRANSITIONS=155} [2023-08-31 01:49:55,557 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 48 predicate places. [2023-08-31 01:49:55,557 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 155 transitions, 970 flow [2023-08-31 01:49:55,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 122.14285714285714) internal successors, (855), 7 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:55,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:55,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:55,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 01:49:55,558 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:49:55,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:55,559 INFO L85 PathProgramCache]: Analyzing trace with hash 148963389, now seen corresponding path program 8 times [2023-08-31 01:49:55,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:55,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053914962] [2023-08-31 01:49:55,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:55,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:55,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:55,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:55,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053914962] [2023-08-31 01:49:55,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053914962] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:49:55,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:49:55,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:49:55,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401285086] [2023-08-31 01:49:55,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:49:55,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:49:55,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:55,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:49:55,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:49:55,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-31 01:49:55,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 155 transitions, 970 flow. Second operand has 9 states, 9 states have (on average 121.11111111111111) internal successors, (1090), 9 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:55,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:55,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-31 01:49:55,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:59,172 INFO L130 PetriNetUnfolder]: 22105/34134 cut-off events. [2023-08-31 01:49:59,172 INFO L131 PetriNetUnfolder]: For 48159/49735 co-relation queries the response was YES. [2023-08-31 01:49:59,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114966 conditions, 34134 events. 22105/34134 cut-off events. For 48159/49735 co-relation queries the response was YES. Maximal size of possible extension queue 964. Compared 238816 event pairs, 8350 based on Foata normal form. 916/34559 useless extension candidates. Maximal degree in co-relation 109903. Up to 11640 conditions per place. [2023-08-31 01:49:59,367 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 256 selfloop transitions, 30 changer transitions 29/347 dead transitions. [2023-08-31 01:49:59,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 347 transitions, 2556 flow [2023-08-31 01:49:59,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 01:49:59,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 01:49:59,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1469 transitions. [2023-08-31 01:49:59,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5237076648841354 [2023-08-31 01:49:59,372 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1469 transitions. [2023-08-31 01:49:59,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1469 transitions. [2023-08-31 01:49:59,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:59,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1469 transitions. [2023-08-31 01:49:59,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 133.54545454545453) internal successors, (1469), 11 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:59,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:59,381 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:59,381 INFO L175 Difference]: Start difference. First operand has 107 places, 155 transitions, 970 flow. Second operand 11 states and 1469 transitions. [2023-08-31 01:49:59,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 347 transitions, 2556 flow [2023-08-31 01:49:59,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 347 transitions, 2554 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-31 01:49:59,921 INFO L231 Difference]: Finished difference. Result has 121 places, 160 transitions, 1093 flow [2023-08-31 01:49:59,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=968, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1093, PETRI_PLACES=121, PETRI_TRANSITIONS=160} [2023-08-31 01:49:59,922 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 62 predicate places. [2023-08-31 01:49:59,922 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 160 transitions, 1093 flow [2023-08-31 01:49:59,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 121.11111111111111) internal successors, (1090), 9 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:59,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:59,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:59,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 01:49:59,923 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:49:59,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:59,923 INFO L85 PathProgramCache]: Analyzing trace with hash -436772047, now seen corresponding path program 9 times [2023-08-31 01:49:59,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:59,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597392535] [2023-08-31 01:49:59,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:59,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:50:00,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:50:00,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:50:00,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597392535] [2023-08-31 01:50:00,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597392535] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:50:00,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:50:00,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:50:00,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563519473] [2023-08-31 01:50:00,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:50:00,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:50:00,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:50:00,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:50:00,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:50:00,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-31 01:50:00,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 160 transitions, 1093 flow. Second operand has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:50:00,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:50:00,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-31 01:50:00,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:50:03,735 INFO L130 PetriNetUnfolder]: 16971/30843 cut-off events. [2023-08-31 01:50:03,735 INFO L131 PetriNetUnfolder]: For 46509/47101 co-relation queries the response was YES. [2023-08-31 01:50:03,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103352 conditions, 30843 events. 16971/30843 cut-off events. For 46509/47101 co-relation queries the response was YES. Maximal size of possible extension queue 961. Compared 267662 event pairs, 6779 based on Foata normal form. 206/30019 useless extension candidates. Maximal degree in co-relation 103264. Up to 21490 conditions per place. [2023-08-31 01:50:03,884 INFO L137 encePairwiseOnDemand]: 240/255 looper letters, 197 selfloop transitions, 72 changer transitions 0/327 dead transitions. [2023-08-31 01:50:03,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 327 transitions, 2486 flow [2023-08-31 01:50:03,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 01:50:03,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 01:50:03,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1452 transitions. [2023-08-31 01:50:03,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176470588235295 [2023-08-31 01:50:03,893 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1452 transitions. [2023-08-31 01:50:03,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1452 transitions. [2023-08-31 01:50:03,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:50:03,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1452 transitions. [2023-08-31 01:50:03,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 132.0) internal successors, (1452), 11 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:03,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:03,905 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:03,906 INFO L175 Difference]: Start difference. First operand has 121 places, 160 transitions, 1093 flow. Second operand 11 states and 1452 transitions. [2023-08-31 01:50:03,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 327 transitions, 2486 flow [2023-08-31 01:50:04,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 327 transitions, 2451 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-08-31 01:50:04,455 INFO L231 Difference]: Finished difference. Result has 134 places, 231 transitions, 1851 flow [2023-08-31 01:50:04,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1851, PETRI_PLACES=134, PETRI_TRANSITIONS=231} [2023-08-31 01:50:04,456 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 75 predicate places. [2023-08-31 01:50:04,456 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 231 transitions, 1851 flow [2023-08-31 01:50:04,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:50:04,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:50:04,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:50:04,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 01:50:04,457 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:50:04,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:50:04,458 INFO L85 PathProgramCache]: Analyzing trace with hash -857038051, now seen corresponding path program 10 times [2023-08-31 01:50:04,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:50:04,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917635817] [2023-08-31 01:50:04,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:50:04,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:50:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:50:04,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:50:04,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:50:04,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917635817] [2023-08-31 01:50:04,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917635817] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:50:04,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:50:04,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-31 01:50:04,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169380237] [2023-08-31 01:50:04,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:50:04,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:50:04,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:50:04,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:50:04,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:50:05,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-31 01:50:05,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 231 transitions, 1851 flow. Second operand has 7 states, 7 states have (on average 122.28571428571429) internal successors, (856), 7 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:05,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:50:05,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-31 01:50:05,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:50:08,681 INFO L130 PetriNetUnfolder]: 18451/34293 cut-off events. [2023-08-31 01:50:08,682 INFO L131 PetriNetUnfolder]: For 82494/84455 co-relation queries the response was YES. [2023-08-31 01:50:08,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125091 conditions, 34293 events. 18451/34293 cut-off events. For 82494/84455 co-relation queries the response was YES. Maximal size of possible extension queue 1062. Compared 307136 event pairs, 6124 based on Foata normal form. 668/34055 useless extension candidates. Maximal degree in co-relation 122531. Up to 13043 conditions per place. [2023-08-31 01:50:08,903 INFO L137 encePairwiseOnDemand]: 241/255 looper letters, 229 selfloop transitions, 72 changer transitions 3/367 dead transitions. [2023-08-31 01:50:08,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 367 transitions, 3267 flow [2023-08-31 01:50:08,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:50:08,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:50:08,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 962 transitions. [2023-08-31 01:50:08,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5389355742296918 [2023-08-31 01:50:08,906 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 962 transitions. [2023-08-31 01:50:08,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 962 transitions. [2023-08-31 01:50:08,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:50:08,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 962 transitions. [2023-08-31 01:50:08,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 137.42857142857142) internal successors, (962), 7 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:08,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:08,912 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:08,912 INFO L175 Difference]: Start difference. First operand has 134 places, 231 transitions, 1851 flow. Second operand 7 states and 962 transitions. [2023-08-31 01:50:08,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 367 transitions, 3267 flow [2023-08-31 01:50:09,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 367 transitions, 3211 flow, removed 28 selfloop flow, removed 0 redundant places. [2023-08-31 01:50:09,439 INFO L231 Difference]: Finished difference. Result has 144 places, 252 transitions, 2266 flow [2023-08-31 01:50:09,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=1781, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2266, PETRI_PLACES=144, PETRI_TRANSITIONS=252} [2023-08-31 01:50:09,440 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 85 predicate places. [2023-08-31 01:50:09,440 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 252 transitions, 2266 flow [2023-08-31 01:50:09,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 122.28571428571429) internal successors, (856), 7 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:09,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:50:09,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:50:09,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 01:50:09,441 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:50:09,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:50:09,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1057114369, now seen corresponding path program 11 times [2023-08-31 01:50:09,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:50:09,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766793664] [2023-08-31 01:50:09,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:50:09,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:50:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:50:09,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:50:09,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:50:09,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766793664] [2023-08-31 01:50:09,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766793664] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:50:09,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:50:09,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:50:09,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801649196] [2023-08-31 01:50:09,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:50:09,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:50:09,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:50:09,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:50:09,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:50:09,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-31 01:50:09,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 252 transitions, 2266 flow. Second operand has 9 states, 9 states have (on average 121.11111111111111) internal successors, (1090), 9 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:09,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:50:09,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-31 01:50:09,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:50:15,658 INFO L130 PetriNetUnfolder]: 30033/48681 cut-off events. [2023-08-31 01:50:15,659 INFO L131 PetriNetUnfolder]: For 150267/152327 co-relation queries the response was YES. [2023-08-31 01:50:16,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196148 conditions, 48681 events. 30033/48681 cut-off events. For 150267/152327 co-relation queries the response was YES. Maximal size of possible extension queue 1137. Compared 376948 event pairs, 10902 based on Foata normal form. 694/48786 useless extension candidates. Maximal degree in co-relation 191277. Up to 13549 conditions per place. [2023-08-31 01:50:16,272 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 377 selfloop transitions, 32 changer transitions 61/533 dead transitions. [2023-08-31 01:50:16,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 533 transitions, 5194 flow [2023-08-31 01:50:16,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 01:50:16,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 01:50:16,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1481 transitions. [2023-08-31 01:50:16,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279857397504456 [2023-08-31 01:50:16,277 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1481 transitions. [2023-08-31 01:50:16,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1481 transitions. [2023-08-31 01:50:16,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:50:16,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1481 transitions. [2023-08-31 01:50:16,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 134.63636363636363) internal successors, (1481), 11 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:16,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:16,285 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:16,286 INFO L175 Difference]: Start difference. First operand has 144 places, 252 transitions, 2266 flow. Second operand 11 states and 1481 transitions. [2023-08-31 01:50:16,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 533 transitions, 5194 flow [2023-08-31 01:50:17,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 533 transitions, 5170 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-08-31 01:50:17,601 INFO L231 Difference]: Finished difference. Result has 158 places, 257 transitions, 2395 flow [2023-08-31 01:50:17,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=2260, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2395, PETRI_PLACES=158, PETRI_TRANSITIONS=257} [2023-08-31 01:50:17,602 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 99 predicate places. [2023-08-31 01:50:17,602 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 257 transitions, 2395 flow [2023-08-31 01:50:17,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 121.11111111111111) internal successors, (1090), 9 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:17,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:50:17,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:50:17,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 01:50:17,604 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:50:17,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:50:17,604 INFO L85 PathProgramCache]: Analyzing trace with hash 287506541, now seen corresponding path program 12 times [2023-08-31 01:50:17,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:50:17,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734603097] [2023-08-31 01:50:17,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:50:17,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:50:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:50:18,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:50:18,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:50:18,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734603097] [2023-08-31 01:50:18,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734603097] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:50:18,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:50:18,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:50:18,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253677893] [2023-08-31 01:50:18,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:50:18,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:50:18,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:50:18,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:50:18,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:50:18,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-31 01:50:18,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 257 transitions, 2395 flow. Second operand has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:50:18,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:50:18,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-31 01:50:18,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:50:22,919 INFO L130 PetriNetUnfolder]: 20882/39316 cut-off events. [2023-08-31 01:50:22,919 INFO L131 PetriNetUnfolder]: For 134764/136909 co-relation queries the response was YES. [2023-08-31 01:50:23,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159052 conditions, 39316 events. 20882/39316 cut-off events. For 134764/136909 co-relation queries the response was YES. Maximal size of possible extension queue 1170. Compared 363365 event pairs, 6541 based on Foata normal form. 524/39208 useless extension candidates. Maximal degree in co-relation 158754. Up to 19860 conditions per place. [2023-08-31 01:50:23,267 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 277 selfloop transitions, 75 changer transitions 1/416 dead transitions. [2023-08-31 01:50:23,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 416 transitions, 4380 flow [2023-08-31 01:50:23,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:50:23,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:50:23,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 937 transitions. [2023-08-31 01:50:23,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5249299719887955 [2023-08-31 01:50:23,271 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 937 transitions. [2023-08-31 01:50:23,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 937 transitions. [2023-08-31 01:50:23,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:50:23,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 937 transitions. [2023-08-31 01:50:23,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 133.85714285714286) internal successors, (937), 7 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) [2023-08-31 01:50:23,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:23,276 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:23,276 INFO L175 Difference]: Start difference. First operand has 158 places, 257 transitions, 2395 flow. Second operand 7 states and 937 transitions. [2023-08-31 01:50:23,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 416 transitions, 4380 flow [2023-08-31 01:50:24,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 416 transitions, 4341 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-08-31 01:50:24,720 INFO L231 Difference]: Finished difference. Result has 162 places, 298 transitions, 3043 flow [2023-08-31 01:50:24,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=2358, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3043, PETRI_PLACES=162, PETRI_TRANSITIONS=298} [2023-08-31 01:50:24,721 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 103 predicate places. [2023-08-31 01:50:24,721 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 298 transitions, 3043 flow [2023-08-31 01:50:24,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:50:24,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:50:24,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:50:24,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 01:50:24,722 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:50:24,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:50:24,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1525849507, now seen corresponding path program 13 times [2023-08-31 01:50:24,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:50:24,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911067274] [2023-08-31 01:50:24,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:50:24,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:50:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:50:25,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:50:25,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:50:25,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911067274] [2023-08-31 01:50:25,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911067274] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:50:25,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:50:25,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:50:25,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542446614] [2023-08-31 01:50:25,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:50:25,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:50:25,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:50:25,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:50:25,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-31 01:50:25,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 255 [2023-08-31 01:50:25,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 298 transitions, 3043 flow. Second operand has 8 states, 8 states have (on average 125.25) internal successors, (1002), 8 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:25,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:50:25,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 255 [2023-08-31 01:50:25,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:50:30,875 INFO L130 PetriNetUnfolder]: 23740/45023 cut-off events. [2023-08-31 01:50:30,875 INFO L131 PetriNetUnfolder]: For 197890/201665 co-relation queries the response was YES. [2023-08-31 01:50:31,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185899 conditions, 45023 events. 23740/45023 cut-off events. For 197890/201665 co-relation queries the response was YES. Maximal size of possible extension queue 1421. Compared 432995 event pairs, 9002 based on Foata normal form. 941/44846 useless extension candidates. Maximal degree in co-relation 182024. Up to 24144 conditions per place. [2023-08-31 01:50:31,241 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 277 selfloop transitions, 51 changer transitions 36/472 dead transitions. [2023-08-31 01:50:31,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 472 transitions, 5045 flow [2023-08-31 01:50:31,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:50:31,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:50:31,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1239 transitions. [2023-08-31 01:50:31,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398692810457516 [2023-08-31 01:50:31,244 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1239 transitions. [2023-08-31 01:50:31,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1239 transitions. [2023-08-31 01:50:31,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:50:31,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1239 transitions. [2023-08-31 01:50:31,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 137.66666666666666) internal successors, (1239), 9 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:31,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:31,249 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:31,250 INFO L175 Difference]: Start difference. First operand has 162 places, 298 transitions, 3043 flow. Second operand 9 states and 1239 transitions. [2023-08-31 01:50:31,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 472 transitions, 5045 flow [2023-08-31 01:50:33,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 472 transitions, 5037 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-31 01:50:33,742 INFO L231 Difference]: Finished difference. Result has 174 places, 331 transitions, 3515 flow [2023-08-31 01:50:33,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=3041, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3515, PETRI_PLACES=174, PETRI_TRANSITIONS=331} [2023-08-31 01:50:33,743 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 115 predicate places. [2023-08-31 01:50:33,743 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 331 transitions, 3515 flow [2023-08-31 01:50:33,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 125.25) internal successors, (1002), 8 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:33,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:50:33,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:50:33,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 01:50:33,744 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:50:33,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:50:33,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1720285273, now seen corresponding path program 14 times [2023-08-31 01:50:33,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:50:33,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675183343] [2023-08-31 01:50:33,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:50:33,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:50:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:50:34,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:50:34,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:50:34,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675183343] [2023-08-31 01:50:34,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675183343] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:50:34,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:50:34,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:50:34,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817658765] [2023-08-31 01:50:34,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:50:34,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:50:34,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:50:34,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:50:34,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-31 01:50:34,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 255 [2023-08-31 01:50:34,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 331 transitions, 3515 flow. Second operand has 8 states, 8 states have (on average 123.375) internal successors, (987), 8 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:34,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:50:34,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 255 [2023-08-31 01:50:34,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:50:39,933 INFO L130 PetriNetUnfolder]: 23009/43744 cut-off events. [2023-08-31 01:50:39,934 INFO L131 PetriNetUnfolder]: For 234067/237646 co-relation queries the response was YES. [2023-08-31 01:50:40,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191446 conditions, 43744 events. 23009/43744 cut-off events. For 234067/237646 co-relation queries the response was YES. Maximal size of possible extension queue 1384. Compared 417951 event pairs, 10437 based on Foata normal form. 582/42862 useless extension candidates. Maximal degree in co-relation 187264. Up to 34534 conditions per place. [2023-08-31 01:50:40,579 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 231 selfloop transitions, 52 changer transitions 19/415 dead transitions. [2023-08-31 01:50:40,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 415 transitions, 4667 flow [2023-08-31 01:50:40,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:50:40,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:50:40,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1074 transitions. [2023-08-31 01:50:40,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5264705882352941 [2023-08-31 01:50:40,593 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1074 transitions. [2023-08-31 01:50:40,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1074 transitions. [2023-08-31 01:50:40,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:50:40,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1074 transitions. [2023-08-31 01:50:40,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 134.25) internal successors, (1074), 8 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:40,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:40,611 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:40,611 INFO L175 Difference]: Start difference. First operand has 174 places, 331 transitions, 3515 flow. Second operand 8 states and 1074 transitions. [2023-08-31 01:50:40,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 415 transitions, 4667 flow [2023-08-31 01:50:42,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 415 transitions, 4607 flow, removed 26 selfloop flow, removed 1 redundant places. [2023-08-31 01:50:42,802 INFO L231 Difference]: Finished difference. Result has 182 places, 350 transitions, 3829 flow [2023-08-31 01:50:42,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=3455, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3829, PETRI_PLACES=182, PETRI_TRANSITIONS=350} [2023-08-31 01:50:42,802 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 123 predicate places. [2023-08-31 01:50:42,802 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 350 transitions, 3829 flow [2023-08-31 01:50:42,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 123.375) internal successors, (987), 8 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:42,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:50:42,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:50:42,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-31 01:50:42,803 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:50:42,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:50:42,804 INFO L85 PathProgramCache]: Analyzing trace with hash -2020719651, now seen corresponding path program 15 times [2023-08-31 01:50:42,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:50:42,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170810422] [2023-08-31 01:50:42,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:50:42,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:50:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:50:43,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:50:43,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:50:43,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170810422] [2023-08-31 01:50:43,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170810422] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:50:43,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:50:43,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:50:43,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030495357] [2023-08-31 01:50:43,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:50:43,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:50:43,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:50:43,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:50:43,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:50:43,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-31 01:50:43,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 350 transitions, 3829 flow. Second operand has 10 states, 10 states have (on average 120.7) internal successors, (1207), 10 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:43,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:50:43,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-31 01:50:43,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:50:49,760 INFO L130 PetriNetUnfolder]: 23974/45149 cut-off events. [2023-08-31 01:50:49,760 INFO L131 PetriNetUnfolder]: For 264544/267858 co-relation queries the response was YES. [2023-08-31 01:50:50,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204360 conditions, 45149 events. 23974/45149 cut-off events. For 264544/267858 co-relation queries the response was YES. Maximal size of possible extension queue 1388. Compared 427092 event pairs, 10848 based on Foata normal form. 362/44239 useless extension candidates. Maximal degree in co-relation 199885. Up to 35636 conditions per place. [2023-08-31 01:50:50,234 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 303 selfloop transitions, 63 changer transitions 16/455 dead transitions. [2023-08-31 01:50:50,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 455 transitions, 5476 flow [2023-08-31 01:50:50,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:50:50,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:50:50,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1065 transitions. [2023-08-31 01:50:50,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5220588235294118 [2023-08-31 01:50:50,236 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1065 transitions. [2023-08-31 01:50:50,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1065 transitions. [2023-08-31 01:50:50,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:50:50,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1065 transitions. [2023-08-31 01:50:50,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 133.125) internal successors, (1065), 8 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:50,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:50,240 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:50,241 INFO L175 Difference]: Start difference. First operand has 182 places, 350 transitions, 3829 flow. Second operand 8 states and 1065 transitions. [2023-08-31 01:50:50,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 455 transitions, 5476 flow [2023-08-31 01:50:52,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 455 transitions, 5395 flow, removed 22 selfloop flow, removed 4 redundant places. [2023-08-31 01:50:52,922 INFO L231 Difference]: Finished difference. Result has 190 places, 371 transitions, 4312 flow [2023-08-31 01:50:52,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=3765, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4312, PETRI_PLACES=190, PETRI_TRANSITIONS=371} [2023-08-31 01:50:52,923 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 131 predicate places. [2023-08-31 01:50:52,923 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 371 transitions, 4312 flow [2023-08-31 01:50:52,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.7) internal successors, (1207), 10 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:52,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:50:52,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:50:52,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-31 01:50:52,924 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:50:52,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:50:52,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1474309577, now seen corresponding path program 16 times [2023-08-31 01:50:52,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:50:52,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340491878] [2023-08-31 01:50:52,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:50:52,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:50:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:50:53,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:50:53,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:50:53,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340491878] [2023-08-31 01:50:53,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340491878] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:50:53,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:50:53,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-31 01:50:53,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171416847] [2023-08-31 01:50:53,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:50:53,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 01:50:53,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:50:53,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 01:50:53,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-08-31 01:50:53,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-31 01:50:53,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 371 transitions, 4312 flow. Second operand has 13 states, 13 states have (on average 118.84615384615384) internal successors, (1545), 13 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:53,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:50:53,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-31 01:50:53,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:51:02,667 INFO L130 PetriNetUnfolder]: 30014/56121 cut-off events. [2023-08-31 01:51:02,667 INFO L131 PetriNetUnfolder]: For 354166/357332 co-relation queries the response was YES. [2023-08-31 01:51:03,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256085 conditions, 56121 events. 30014/56121 cut-off events. For 354166/357332 co-relation queries the response was YES. Maximal size of possible extension queue 1838. Compared 544626 event pairs, 7399 based on Foata normal form. 2005/57640 useless extension candidates. Maximal degree in co-relation 251966. Up to 15730 conditions per place. [2023-08-31 01:51:03,287 INFO L137 encePairwiseOnDemand]: 237/255 looper letters, 430 selfloop transitions, 282 changer transitions 61/836 dead transitions. [2023-08-31 01:51:03,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 836 transitions, 10311 flow [2023-08-31 01:51:03,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-31 01:51:03,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-31 01:51:03,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3071 transitions. [2023-08-31 01:51:03,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523614663256607 [2023-08-31 01:51:03,292 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3071 transitions. [2023-08-31 01:51:03,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3071 transitions. [2023-08-31 01:51:03,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:51:03,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3071 transitions. [2023-08-31 01:51:03,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 133.52173913043478) internal successors, (3071), 23 states have internal predecessors, (3071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:51:03,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 255.0) internal successors, (6120), 24 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:51:03,303 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 255.0) internal successors, (6120), 24 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:51:03,303 INFO L175 Difference]: Start difference. First operand has 190 places, 371 transitions, 4312 flow. Second operand 23 states and 3071 transitions. [2023-08-31 01:51:03,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 836 transitions, 10311 flow [2023-08-31 01:51:06,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 836 transitions, 10197 flow, removed 57 selfloop flow, removed 0 redundant places. [2023-08-31 01:51:06,683 INFO L231 Difference]: Finished difference. Result has 227 places, 498 transitions, 7082 flow [2023-08-31 01:51:06,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=4003, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=7082, PETRI_PLACES=227, PETRI_TRANSITIONS=498} [2023-08-31 01:51:06,683 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 168 predicate places. [2023-08-31 01:51:06,684 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 498 transitions, 7082 flow [2023-08-31 01:51:06,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 118.84615384615384) internal successors, (1545), 13 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:51:06,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:51:06,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:51:06,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-31 01:51:06,685 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:51:06,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:51:06,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1915283881, now seen corresponding path program 17 times [2023-08-31 01:51:06,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:51:06,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465521186] [2023-08-31 01:51:06,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:51:06,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:51:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:51:07,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:51:07,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:51:07,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465521186] [2023-08-31 01:51:07,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465521186] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:51:07,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:51:07,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:51:07,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179064498] [2023-08-31 01:51:07,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:51:07,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:51:07,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:51:07,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:51:07,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:51:07,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 255 [2023-08-31 01:51:07,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 498 transitions, 7082 flow. Second operand has 10 states, 10 states have (on average 122.6) internal successors, (1226), 10 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:51:07,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:51:07,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 255 [2023-08-31 01:51:07,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:51:16,818 INFO L130 PetriNetUnfolder]: 27575/52232 cut-off events. [2023-08-31 01:51:16,818 INFO L131 PetriNetUnfolder]: For 643836/649224 co-relation queries the response was YES. [2023-08-31 01:51:17,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284095 conditions, 52232 events. 27575/52232 cut-off events. For 643836/649224 co-relation queries the response was YES. Maximal size of possible extension queue 1836. Compared 511442 event pairs, 12395 based on Foata normal form. 790/51804 useless extension candidates. Maximal degree in co-relation 279442. Up to 40947 conditions per place. [2023-08-31 01:51:17,787 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 346 selfloop transitions, 74 changer transitions 43/596 dead transitions. [2023-08-31 01:51:17,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 596 transitions, 9055 flow [2023-08-31 01:51:17,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:51:17,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:51:17,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1199 transitions. [2023-08-31 01:51:17,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224400871459695 [2023-08-31 01:51:17,789 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1199 transitions. [2023-08-31 01:51:17,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1199 transitions. [2023-08-31 01:51:17,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:51:17,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1199 transitions. [2023-08-31 01:51:17,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 133.22222222222223) internal successors, (1199), 9 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:51:17,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:51:17,793 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:51:17,794 INFO L175 Difference]: Start difference. First operand has 227 places, 498 transitions, 7082 flow. Second operand 9 states and 1199 transitions. [2023-08-31 01:51:17,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 596 transitions, 9055 flow [2023-08-31 01:51:24,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 596 transitions, 8567 flow, removed 240 selfloop flow, removed 2 redundant places. [2023-08-31 01:51:24,297 INFO L231 Difference]: Finished difference. Result has 235 places, 502 transitions, 6922 flow [2023-08-31 01:51:24,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=6678, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6922, PETRI_PLACES=235, PETRI_TRANSITIONS=502} [2023-08-31 01:51:24,298 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 176 predicate places. [2023-08-31 01:51:24,298 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 502 transitions, 6922 flow [2023-08-31 01:51:24,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.6) internal successors, (1226), 10 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:51:24,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:51:24,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:51:24,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-31 01:51:24,299 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:51:24,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:51:24,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1554493685, now seen corresponding path program 18 times [2023-08-31 01:51:24,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:51:24,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833163752] [2023-08-31 01:51:24,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:51:24,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:51:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:51:24,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:51:24,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:51:24,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833163752] [2023-08-31 01:51:24,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833163752] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:51:24,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:51:24,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 01:51:24,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249623947] [2023-08-31 01:51:24,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:51:24,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:51:24,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:51:24,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:51:24,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:51:24,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-31 01:51:24,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 502 transitions, 6922 flow. Second operand has 11 states, 11 states have (on average 119.36363636363636) internal successors, (1313), 11 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:51:24,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:51:24,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-31 01:51:24,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:51:35,510 INFO L130 PetriNetUnfolder]: 31294/58066 cut-off events. [2023-08-31 01:51:35,510 INFO L131 PetriNetUnfolder]: For 651937/656847 co-relation queries the response was YES. [2023-08-31 01:51:36,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307281 conditions, 58066 events. 31294/58066 cut-off events. For 651937/656847 co-relation queries the response was YES. Maximal size of possible extension queue 1915. Compared 561456 event pairs, 14157 based on Foata normal form. 482/57736 useless extension candidates. Maximal degree in co-relation 302800. Up to 41348 conditions per place. [2023-08-31 01:51:36,223 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 436 selfloop transitions, 80 changer transitions 60/639 dead transitions. [2023-08-31 01:51:36,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 639 transitions, 9533 flow [2023-08-31 01:51:36,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:51:36,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:51:36,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1201 transitions. [2023-08-31 01:51:36,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5233115468409586 [2023-08-31 01:51:36,225 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1201 transitions. [2023-08-31 01:51:36,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1201 transitions. [2023-08-31 01:51:36,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:51:36,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1201 transitions. [2023-08-31 01:51:36,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 133.44444444444446) internal successors, (1201), 9 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:51:36,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:51:36,229 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:51:36,229 INFO L175 Difference]: Start difference. First operand has 235 places, 502 transitions, 6922 flow. Second operand 9 states and 1201 transitions. [2023-08-31 01:51:36,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 639 transitions, 9533 flow [2023-08-31 01:51:42,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 639 transitions, 9386 flow, removed 12 selfloop flow, removed 7 redundant places. [2023-08-31 01:51:42,629 INFO L231 Difference]: Finished difference. Result has 237 places, 497 transitions, 6942 flow [2023-08-31 01:51:42,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=6785, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6942, PETRI_PLACES=237, PETRI_TRANSITIONS=497} [2023-08-31 01:51:42,629 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 178 predicate places. [2023-08-31 01:51:42,630 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 497 transitions, 6942 flow [2023-08-31 01:51:42,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 119.36363636363636) internal successors, (1313), 11 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:51:42,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:51:42,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:51:42,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-31 01:51:42,630 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:51:42,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:51:42,631 INFO L85 PathProgramCache]: Analyzing trace with hash -879633153, now seen corresponding path program 19 times [2023-08-31 01:51:42,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:51:42,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273354298] [2023-08-31 01:51:42,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:51:42,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:51:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:51:43,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:51:43,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:51:43,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273354298] [2023-08-31 01:51:43,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273354298] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:51:43,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:51:43,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:51:43,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28548285] [2023-08-31 01:51:43,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:51:43,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:51:43,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:51:43,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:51:43,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-31 01:51:43,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 255 [2023-08-31 01:51:43,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 497 transitions, 6942 flow. Second operand has 8 states, 8 states have (on average 123.375) internal successors, (987), 8 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:51:43,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:51:43,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 255 [2023-08-31 01:51:43,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:51:53,280 INFO L130 PetriNetUnfolder]: 26739/49928 cut-off events. [2023-08-31 01:51:53,281 INFO L131 PetriNetUnfolder]: For 588614/592093 co-relation queries the response was YES. [2023-08-31 01:51:54,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264242 conditions, 49928 events. 26739/49928 cut-off events. For 588614/592093 co-relation queries the response was YES. Maximal size of possible extension queue 1864. Compared 483624 event pairs, 12541 based on Foata normal form. 1020/49944 useless extension candidates. Maximal degree in co-relation 263306. Up to 35357 conditions per place. [2023-08-31 01:51:54,136 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 353 selfloop transitions, 69 changer transitions 36/575 dead transitions. [2023-08-31 01:51:54,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 575 transitions, 8582 flow [2023-08-31 01:51:54,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:51:54,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:51:54,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1074 transitions. [2023-08-31 01:51:54,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5264705882352941 [2023-08-31 01:51:54,138 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1074 transitions. [2023-08-31 01:51:54,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1074 transitions. [2023-08-31 01:51:54,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:51:54,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1074 transitions. [2023-08-31 01:51:54,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 134.25) internal successors, (1074), 8 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:51:54,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:51:54,140 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:51:54,140 INFO L175 Difference]: Start difference. First operand has 237 places, 497 transitions, 6942 flow. Second operand 8 states and 1074 transitions. [2023-08-31 01:51:54,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 575 transitions, 8582 flow [2023-08-31 01:51:59,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 575 transitions, 8350 flow, removed 43 selfloop flow, removed 10 redundant places. [2023-08-31 01:51:59,035 INFO L231 Difference]: Finished difference. Result has 234 places, 474 transitions, 6689 flow [2023-08-31 01:51:59,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=6544, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6689, PETRI_PLACES=234, PETRI_TRANSITIONS=474} [2023-08-31 01:51:59,036 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 175 predicate places. [2023-08-31 01:51:59,036 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 474 transitions, 6689 flow [2023-08-31 01:51:59,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 123.375) internal successors, (987), 8 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:51:59,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:51:59,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:51:59,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-31 01:51:59,037 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:51:59,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:51:59,037 INFO L85 PathProgramCache]: Analyzing trace with hash 491426649, now seen corresponding path program 20 times [2023-08-31 01:51:59,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:51:59,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348743736] [2023-08-31 01:51:59,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:51:59,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:51:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:51:59,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:51:59,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:51:59,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348743736] [2023-08-31 01:51:59,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348743736] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:51:59,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:51:59,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 01:51:59,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012574073] [2023-08-31 01:51:59,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:51:59,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 01:51:59,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:51:59,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 01:51:59,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-31 01:51:59,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 255 [2023-08-31 01:51:59,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 474 transitions, 6689 flow. Second operand has 6 states, 6 states have (on average 126.66666666666667) internal successors, (760), 6 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) [2023-08-31 01:51:59,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:51:59,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 255 [2023-08-31 01:51:59,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:52:08,544 INFO L130 PetriNetUnfolder]: 28993/53959 cut-off events. [2023-08-31 01:52:08,544 INFO L131 PetriNetUnfolder]: For 624790/628833 co-relation queries the response was YES. [2023-08-31 01:52:09,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283883 conditions, 53959 events. 28993/53959 cut-off events. For 624790/628833 co-relation queries the response was YES. Maximal size of possible extension queue 1985. Compared 524581 event pairs, 13001 based on Foata normal form. 772/53751 useless extension candidates. Maximal degree in co-relation 274008. Up to 37363 conditions per place. [2023-08-31 01:52:09,608 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 392 selfloop transitions, 37 changer transitions 12/548 dead transitions. [2023-08-31 01:52:09,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 548 transitions, 8211 flow [2023-08-31 01:52:09,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:52:09,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:52:09,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 824 transitions. [2023-08-31 01:52:09,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.538562091503268 [2023-08-31 01:52:09,610 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 824 transitions. [2023-08-31 01:52:09,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 824 transitions. [2023-08-31 01:52:09,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:52:09,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 824 transitions. [2023-08-31 01:52:09,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 137.33333333333334) internal successors, (824), 6 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:52:09,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:52:09,613 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:52:09,613 INFO L175 Difference]: Start difference. First operand has 234 places, 474 transitions, 6689 flow. Second operand 6 states and 824 transitions. [2023-08-31 01:52:09,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 548 transitions, 8211 flow [2023-08-31 01:52:15,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 548 transitions, 8035 flow, removed 38 selfloop flow, removed 8 redundant places. [2023-08-31 01:52:15,495 INFO L231 Difference]: Finished difference. Result has 233 places, 478 transitions, 6672 flow [2023-08-31 01:52:15,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=6517, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6672, PETRI_PLACES=233, PETRI_TRANSITIONS=478} [2023-08-31 01:52:15,496 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 174 predicate places. [2023-08-31 01:52:15,496 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 478 transitions, 6672 flow [2023-08-31 01:52:15,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.66666666666667) internal successors, (760), 6 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) [2023-08-31 01:52:15,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:52:15,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:52:15,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-31 01:52:15,497 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:52:15,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:52:15,498 INFO L85 PathProgramCache]: Analyzing trace with hash -660534051, now seen corresponding path program 21 times [2023-08-31 01:52:15,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:52:15,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878414713] [2023-08-31 01:52:15,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:52:15,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:52:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:52:16,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:52:16,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:52:16,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878414713] [2023-08-31 01:52:16,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878414713] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:52:16,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:52:16,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:52:16,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205029681] [2023-08-31 01:52:16,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:52:16,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:52:16,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:52:16,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:52:16,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:52:16,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-31 01:52:16,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 478 transitions, 6672 flow. Second operand has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:52:16,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:52:16,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-31 01:52:16,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:52:26,426 INFO L130 PetriNetUnfolder]: 32242/58106 cut-off events. [2023-08-31 01:52:26,426 INFO L131 PetriNetUnfolder]: For 647598/650699 co-relation queries the response was YES. [2023-08-31 01:52:27,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308852 conditions, 58106 events. 32242/58106 cut-off events. For 647598/650699 co-relation queries the response was YES. Maximal size of possible extension queue 2092. Compared 549144 event pairs, 12041 based on Foata normal form. 822/58132 useless extension candidates. Maximal degree in co-relation 298550. Up to 33566 conditions per place. [2023-08-31 01:52:27,191 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 426 selfloop transitions, 191 changer transitions 5/670 dead transitions. [2023-08-31 01:52:27,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 670 transitions, 10100 flow [2023-08-31 01:52:27,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 01:52:27,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 01:52:27,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1445 transitions. [2023-08-31 01:52:27,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2023-08-31 01:52:27,193 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1445 transitions. [2023-08-31 01:52:27,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1445 transitions. [2023-08-31 01:52:27,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:52:27,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1445 transitions. [2023-08-31 01:52:27,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 131.36363636363637) internal successors, (1445), 11 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:52:27,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:52:27,197 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:52:27,197 INFO L175 Difference]: Start difference. First operand has 233 places, 478 transitions, 6672 flow. Second operand 11 states and 1445 transitions. [2023-08-31 01:52:27,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 670 transitions, 10100 flow [2023-08-31 01:52:32,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 670 transitions, 9975 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-08-31 01:52:32,662 INFO L231 Difference]: Finished difference. Result has 244 places, 550 transitions, 8352 flow [2023-08-31 01:52:32,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=6589, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8352, PETRI_PLACES=244, PETRI_TRANSITIONS=550} [2023-08-31 01:52:32,663 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 185 predicate places. [2023-08-31 01:52:32,663 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 550 transitions, 8352 flow [2023-08-31 01:52:32,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:52:32,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:52:32,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:52:32,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-31 01:52:32,664 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:52:32,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:52:32,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1273824217, now seen corresponding path program 22 times [2023-08-31 01:52:32,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:52:32,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041808100] [2023-08-31 01:52:32,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:52:32,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:52:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:52:32,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:52:32,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:52:32,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041808100] [2023-08-31 01:52:32,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041808100] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:52:32,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:52:32,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:52:32,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912638729] [2023-08-31 01:52:32,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:52:32,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:52:32,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:52:32,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:52:32,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:52:32,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-31 01:52:32,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 550 transitions, 8352 flow. Second operand has 9 states, 9 states have (on average 121.11111111111111) internal successors, (1090), 9 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:52:32,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:52:32,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-31 01:52:32,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:52:47,755 INFO L130 PetriNetUnfolder]: 47820/76858 cut-off events. [2023-08-31 01:52:47,755 INFO L131 PetriNetUnfolder]: For 1026218/1031234 co-relation queries the response was YES. [2023-08-31 01:52:48,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425716 conditions, 76858 events. 47820/76858 cut-off events. For 1026218/1031234 co-relation queries the response was YES. Maximal size of possible extension queue 2435. Compared 640682 event pairs, 22724 based on Foata normal form. 1797/77534 useless extension candidates. Maximal degree in co-relation 412515. Up to 30190 conditions per place. [2023-08-31 01:52:48,830 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 707 selfloop transitions, 18 changer transitions 188/1034 dead transitions. [2023-08-31 01:52:48,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 1034 transitions, 17336 flow [2023-08-31 01:52:48,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 01:52:48,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 01:52:48,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1471 transitions. [2023-08-31 01:52:48,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244206773618538 [2023-08-31 01:52:48,832 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1471 transitions. [2023-08-31 01:52:48,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1471 transitions. [2023-08-31 01:52:48,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:52:48,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1471 transitions. [2023-08-31 01:52:48,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:52:48,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:52:48,836 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:52:48,836 INFO L175 Difference]: Start difference. First operand has 244 places, 550 transitions, 8352 flow. Second operand 11 states and 1471 transitions. [2023-08-31 01:52:48,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 1034 transitions, 17336 flow [2023-08-31 01:52:59,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 1034 transitions, 16562 flow, removed 372 selfloop flow, removed 2 redundant places. [2023-08-31 01:52:59,990 INFO L231 Difference]: Finished difference. Result has 255 places, 557 transitions, 8235 flow [2023-08-31 01:52:59,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=8126, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8235, PETRI_PLACES=255, PETRI_TRANSITIONS=557} [2023-08-31 01:52:59,991 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 196 predicate places. [2023-08-31 01:52:59,991 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 557 transitions, 8235 flow [2023-08-31 01:52:59,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 121.11111111111111) internal successors, (1090), 9 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:52:59,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:52:59,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:52:59,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-31 01:52:59,992 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:52:59,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:52:59,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1879734009, now seen corresponding path program 23 times [2023-08-31 01:52:59,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:52:59,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369657365] [2023-08-31 01:52:59,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:52:59,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:53:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:53:00,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:53:00,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:53:00,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369657365] [2023-08-31 01:53:00,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369657365] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:53:00,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:53:00,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:53:00,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016725846] [2023-08-31 01:53:00,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:53:00,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:53:00,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:53:00,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:53:00,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-31 01:53:00,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 255 [2023-08-31 01:53:00,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 557 transitions, 8235 flow. Second operand has 8 states, 8 states have (on average 123.5) internal successors, (988), 8 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:53:00,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:53:00,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 255 [2023-08-31 01:53:00,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:53:08,869 INFO L130 PetriNetUnfolder]: 23778/43969 cut-off events. [2023-08-31 01:53:08,869 INFO L131 PetriNetUnfolder]: For 594926/598357 co-relation queries the response was YES. [2023-08-31 01:53:09,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242798 conditions, 43969 events. 23778/43969 cut-off events. For 594926/598357 co-relation queries the response was YES. Maximal size of possible extension queue 1603. Compared 413050 event pairs, 11873 based on Foata normal form. 979/44305 useless extension candidates. Maximal degree in co-relation 242593. Up to 33854 conditions per place. [2023-08-31 01:53:09,492 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 360 selfloop transitions, 49 changer transitions 51/565 dead transitions. [2023-08-31 01:53:09,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 565 transitions, 8981 flow [2023-08-31 01:53:09,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:53:09,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:53:09,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 803 transitions. [2023-08-31 01:53:09,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5248366013071896 [2023-08-31 01:53:09,493 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 803 transitions. [2023-08-31 01:53:09,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 803 transitions. [2023-08-31 01:53:09,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:53:09,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 803 transitions. [2023-08-31 01:53:09,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 133.83333333333334) internal successors, (803), 6 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:53:09,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:53:09,734 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:53:09,734 INFO L175 Difference]: Start difference. First operand has 255 places, 557 transitions, 8235 flow. Second operand 6 states and 803 transitions. [2023-08-31 01:53:09,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 565 transitions, 8981 flow [2023-08-31 01:53:13,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 565 transitions, 8887 flow, removed 29 selfloop flow, removed 7 redundant places. [2023-08-31 01:53:13,594 INFO L231 Difference]: Finished difference. Result has 252 places, 480 transitions, 7041 flow [2023-08-31 01:53:13,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=7472, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7041, PETRI_PLACES=252, PETRI_TRANSITIONS=480} [2023-08-31 01:53:13,595 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 193 predicate places. [2023-08-31 01:53:13,595 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 480 transitions, 7041 flow [2023-08-31 01:53:13,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 123.5) internal successors, (988), 8 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:53:13,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:53:13,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:53:13,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-31 01:53:13,596 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:53:13,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:53:13,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1941805959, now seen corresponding path program 24 times [2023-08-31 01:53:13,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:53:13,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761508032] [2023-08-31 01:53:13,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:53:13,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:53:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:53:13,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:53:13,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:53:13,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761508032] [2023-08-31 01:53:13,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761508032] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:53:13,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:53:13,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-31 01:53:13,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095082507] [2023-08-31 01:53:13,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:53:13,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:53:13,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:53:13,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:53:13,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:53:14,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 255 [2023-08-31 01:53:14,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 480 transitions, 7041 flow. Second operand has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:53:14,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:53:14,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 255 [2023-08-31 01:53:14,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:53:20,684 INFO L130 PetriNetUnfolder]: 19824/36501 cut-off events. [2023-08-31 01:53:20,684 INFO L131 PetriNetUnfolder]: For 524532/527921 co-relation queries the response was YES. [2023-08-31 01:53:21,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203148 conditions, 36501 events. 19824/36501 cut-off events. For 524532/527921 co-relation queries the response was YES. Maximal size of possible extension queue 1355. Compared 333754 event pairs, 9628 based on Foata normal form. 913/36597 useless extension candidates. Maximal degree in co-relation 200604. Up to 27926 conditions per place. [2023-08-31 01:53:21,121 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 330 selfloop transitions, 58 changer transitions 43/545 dead transitions. [2023-08-31 01:53:21,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 545 transitions, 8586 flow [2023-08-31 01:53:21,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:53:21,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:53:21,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 806 transitions. [2023-08-31 01:53:21,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526797385620915 [2023-08-31 01:53:21,122 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 806 transitions. [2023-08-31 01:53:21,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 806 transitions. [2023-08-31 01:53:21,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:53:21,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 806 transitions. [2023-08-31 01:53:21,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 134.33333333333334) internal successors, (806), 6 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:53:21,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:53:21,125 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:53:21,125 INFO L175 Difference]: Start difference. First operand has 252 places, 480 transitions, 7041 flow. Second operand 6 states and 806 transitions. [2023-08-31 01:53:21,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 545 transitions, 8586 flow [2023-08-31 01:53:24,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 545 transitions, 8415 flow, removed 51 selfloop flow, removed 7 redundant places. [2023-08-31 01:53:24,236 INFO L231 Difference]: Finished difference. Result has 251 places, 467 transitions, 6817 flow [2023-08-31 01:53:24,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=6624, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6817, PETRI_PLACES=251, PETRI_TRANSITIONS=467} [2023-08-31 01:53:24,237 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 192 predicate places. [2023-08-31 01:53:24,238 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 467 transitions, 6817 flow [2023-08-31 01:53:24,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:53:24,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:53:24,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:53:24,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-31 01:53:24,239 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:53:24,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:53:24,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1032380713, now seen corresponding path program 25 times [2023-08-31 01:53:24,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:53:24,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000951586] [2023-08-31 01:53:24,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:53:24,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:53:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:53:24,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:53:24,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:53:24,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000951586] [2023-08-31 01:53:24,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000951586] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:53:24,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:53:24,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:53:24,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253881032] [2023-08-31 01:53:24,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:53:24,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:53:24,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:53:24,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:53:24,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-31 01:53:24,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-31 01:53:24,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 467 transitions, 6817 flow. Second operand has 8 states, 8 states have (on average 121.625) internal successors, (973), 8 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:53:24,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:53:24,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-31 01:53:24,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:53:31,917 INFO L130 PetriNetUnfolder]: 22742/41314 cut-off events. [2023-08-31 01:53:31,918 INFO L131 PetriNetUnfolder]: For 523775/525829 co-relation queries the response was YES. [2023-08-31 01:53:32,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222028 conditions, 41314 events. 22742/41314 cut-off events. For 523775/525829 co-relation queries the response was YES. Maximal size of possible extension queue 1465. Compared 374857 event pairs, 8238 based on Foata normal form. 670/41493 useless extension candidates. Maximal degree in co-relation 219688. Up to 18114 conditions per place. [2023-08-31 01:53:32,368 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 440 selfloop transitions, 145 changer transitions 30/676 dead transitions. [2023-08-31 01:53:32,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 676 transitions, 10312 flow [2023-08-31 01:53:32,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 01:53:32,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 01:53:32,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1595 transitions. [2023-08-31 01:53:32,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212418300653595 [2023-08-31 01:53:32,370 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1595 transitions. [2023-08-31 01:53:32,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1595 transitions. [2023-08-31 01:53:32,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:53:32,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1595 transitions. [2023-08-31 01:53:32,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 132.91666666666666) internal successors, (1595), 12 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:53:32,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 255.0) internal successors, (3315), 13 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:53:32,374 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 255.0) internal successors, (3315), 13 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:53:32,375 INFO L175 Difference]: Start difference. First operand has 251 places, 467 transitions, 6817 flow. Second operand 12 states and 1595 transitions. [2023-08-31 01:53:32,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 676 transitions, 10312 flow [2023-08-31 01:53:35,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 676 transitions, 10133 flow, removed 38 selfloop flow, removed 4 redundant places. [2023-08-31 01:53:35,883 INFO L231 Difference]: Finished difference. Result has 268 places, 501 transitions, 7726 flow [2023-08-31 01:53:35,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=6528, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7726, PETRI_PLACES=268, PETRI_TRANSITIONS=501} [2023-08-31 01:53:35,884 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 209 predicate places. [2023-08-31 01:53:35,884 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 501 transitions, 7726 flow [2023-08-31 01:53:35,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 121.625) internal successors, (973), 8 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:53:35,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:53:35,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:53:35,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-31 01:53:35,885 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:53:35,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:53:35,885 INFO L85 PathProgramCache]: Analyzing trace with hash 286183781, now seen corresponding path program 26 times [2023-08-31 01:53:35,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:53:35,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598500693] [2023-08-31 01:53:35,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:53:35,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:53:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:53:36,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:53:36,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:53:36,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598500693] [2023-08-31 01:53:36,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598500693] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:53:36,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:53:36,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:53:36,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8671635] [2023-08-31 01:53:36,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:53:36,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:53:36,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:53:36,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:53:36,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-31 01:53:36,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-31 01:53:36,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 501 transitions, 7726 flow. Second operand has 8 states, 8 states have (on average 121.625) internal successors, (973), 8 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:53:36,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:53:36,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-31 01:53:36,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:53:43,927 INFO L130 PetriNetUnfolder]: 21776/39939 cut-off events. [2023-08-31 01:53:43,927 INFO L131 PetriNetUnfolder]: For 604260/606766 co-relation queries the response was YES. [2023-08-31 01:53:44,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225437 conditions, 39939 events. 21776/39939 cut-off events. For 604260/606766 co-relation queries the response was YES. Maximal size of possible extension queue 1454. Compared 365917 event pairs, 11275 based on Foata normal form. 350/39877 useless extension candidates. Maximal degree in co-relation 223098. Up to 33320 conditions per place. [2023-08-31 01:53:44,662 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 411 selfloop transitions, 11 changer transitions 26/536 dead transitions. [2023-08-31 01:53:44,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 536 transitions, 8833 flow [2023-08-31 01:53:44,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:53:44,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:53:44,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 909 transitions. [2023-08-31 01:53:44,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092436974789916 [2023-08-31 01:53:44,664 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 909 transitions. [2023-08-31 01:53:44,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 909 transitions. [2023-08-31 01:53:44,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:53:44,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 909 transitions. [2023-08-31 01:53:44,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 129.85714285714286) internal successors, (909), 7 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:53:44,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:53:44,666 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:53:44,666 INFO L175 Difference]: Start difference. First operand has 268 places, 501 transitions, 7726 flow. Second operand 7 states and 909 transitions. [2023-08-31 01:53:44,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 536 transitions, 8833 flow [2023-08-31 01:53:48,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 536 transitions, 8615 flow, removed 95 selfloop flow, removed 2 redundant places. [2023-08-31 01:53:48,923 INFO L231 Difference]: Finished difference. Result has 274 places, 491 transitions, 7326 flow [2023-08-31 01:53:48,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=7436, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7326, PETRI_PLACES=274, PETRI_TRANSITIONS=491} [2023-08-31 01:53:48,924 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 215 predicate places. [2023-08-31 01:53:48,924 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 491 transitions, 7326 flow [2023-08-31 01:53:48,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 121.625) internal successors, (973), 8 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:53:48,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:53:48,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:53:48,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-31 01:53:48,925 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:53:48,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:53:48,926 INFO L85 PathProgramCache]: Analyzing trace with hash 240171811, now seen corresponding path program 27 times [2023-08-31 01:53:48,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:53:48,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423150911] [2023-08-31 01:53:48,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:53:48,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:53:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:53:49,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:53:49,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:53:49,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423150911] [2023-08-31 01:53:49,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423150911] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:53:49,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:53:49,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 01:53:49,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841182211] [2023-08-31 01:53:49,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:53:49,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:53:49,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:53:49,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:53:49,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:53:49,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-31 01:53:49,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 491 transitions, 7326 flow. Second operand has 11 states, 11 states have (on average 119.36363636363636) internal successors, (1313), 11 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:53:49,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:53:49,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-31 01:53:49,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:53:58,309 INFO L130 PetriNetUnfolder]: 22706/41326 cut-off events. [2023-08-31 01:53:58,310 INFO L131 PetriNetUnfolder]: For 626734/628473 co-relation queries the response was YES. [2023-08-31 01:53:58,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231695 conditions, 41326 events. 22706/41326 cut-off events. For 626734/628473 co-relation queries the response was YES. Maximal size of possible extension queue 1432. Compared 374244 event pairs, 9132 based on Foata normal form. 500/41487 useless extension candidates. Maximal degree in co-relation 229006. Up to 21317 conditions per place. [2023-08-31 01:53:58,902 INFO L137 encePairwiseOnDemand]: 242/255 looper letters, 471 selfloop transitions, 134 changer transitions 61/718 dead transitions. [2023-08-31 01:53:58,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 718 transitions, 11333 flow [2023-08-31 01:53:58,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:53:58,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:53:58,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1357 transitions. [2023-08-31 01:53:58,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532156862745098 [2023-08-31 01:53:58,904 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1357 transitions. [2023-08-31 01:53:58,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1357 transitions. [2023-08-31 01:53:58,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:53:58,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1357 transitions. [2023-08-31 01:53:58,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 135.7) internal successors, (1357), 10 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:53:58,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 255.0) internal successors, (2805), 11 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:53:58,907 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 255.0) internal successors, (2805), 11 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:53:58,907 INFO L175 Difference]: Start difference. First operand has 274 places, 491 transitions, 7326 flow. Second operand 10 states and 1357 transitions. [2023-08-31 01:53:58,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 718 transitions, 11333 flow [2023-08-31 01:54:03,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 718 transitions, 11217 flow, removed 27 selfloop flow, removed 7 redundant places. [2023-08-31 01:54:03,202 INFO L231 Difference]: Finished difference. Result has 282 places, 516 transitions, 8227 flow [2023-08-31 01:54:03,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=7222, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8227, PETRI_PLACES=282, PETRI_TRANSITIONS=516} [2023-08-31 01:54:03,203 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 223 predicate places. [2023-08-31 01:54:03,203 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 516 transitions, 8227 flow [2023-08-31 01:54:03,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 119.36363636363636) internal successors, (1313), 11 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:54:03,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:54:03,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:54:03,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-31 01:54:03,204 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:54:03,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:54:03,204 INFO L85 PathProgramCache]: Analyzing trace with hash 600631959, now seen corresponding path program 28 times [2023-08-31 01:54:03,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:54:03,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802139606] [2023-08-31 01:54:03,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:54:03,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:54:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:54:03,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:54:03,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:54:03,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802139606] [2023-08-31 01:54:03,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802139606] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:54:03,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:54:03,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:54:03,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845487439] [2023-08-31 01:54:03,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:54:03,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:54:03,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:54:03,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:54:03,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:54:03,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-31 01:54:03,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 516 transitions, 8227 flow. Second operand has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:54:03,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:54:03,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-31 01:54:03,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:54:13,270 INFO L130 PetriNetUnfolder]: 23786/44164 cut-off events. [2023-08-31 01:54:13,270 INFO L131 PetriNetUnfolder]: For 745477/748387 co-relation queries the response was YES. [2023-08-31 01:54:13,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253931 conditions, 44164 events. 23786/44164 cut-off events. For 745477/748387 co-relation queries the response was YES. Maximal size of possible extension queue 1491. Compared 413259 event pairs, 11643 based on Foata normal form. 487/44314 useless extension candidates. Maximal degree in co-relation 250873. Up to 32259 conditions per place. [2023-08-31 01:54:13,983 INFO L137 encePairwiseOnDemand]: 241/255 looper letters, 463 selfloop transitions, 140 changer transitions 48/703 dead transitions. [2023-08-31 01:54:13,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 703 transitions, 12000 flow [2023-08-31 01:54:13,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 01:54:13,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 01:54:13,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1551 transitions. [2023-08-31 01:54:13,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5068627450980392 [2023-08-31 01:54:13,985 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1551 transitions. [2023-08-31 01:54:13,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1551 transitions. [2023-08-31 01:54:13,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:54:13,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1551 transitions. [2023-08-31 01:54:13,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 129.25) internal successors, (1551), 12 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:54:13,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 255.0) internal successors, (3315), 13 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:54:13,988 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 255.0) internal successors, (3315), 13 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:54:13,988 INFO L175 Difference]: Start difference. First operand has 282 places, 516 transitions, 8227 flow. Second operand 12 states and 1551 transitions. [2023-08-31 01:54:13,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 703 transitions, 12000 flow [2023-08-31 01:54:19,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 703 transitions, 11795 flow, removed 94 selfloop flow, removed 5 redundant places. [2023-08-31 01:54:19,963 INFO L231 Difference]: Finished difference. Result has 296 places, 577 transitions, 9773 flow [2023-08-31 01:54:19,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=8115, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9773, PETRI_PLACES=296, PETRI_TRANSITIONS=577} [2023-08-31 01:54:19,964 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 237 predicate places. [2023-08-31 01:54:19,964 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 577 transitions, 9773 flow [2023-08-31 01:54:19,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:54:19,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:54:19,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:54:19,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-31 01:54:19,965 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:54:19,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:54:19,966 INFO L85 PathProgramCache]: Analyzing trace with hash -580430581, now seen corresponding path program 29 times [2023-08-31 01:54:19,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:54:19,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142552052] [2023-08-31 01:54:19,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:54:19,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:54:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:54:20,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:54:20,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:54:20,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142552052] [2023-08-31 01:54:20,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142552052] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:54:20,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:54:20,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:54:20,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833187075] [2023-08-31 01:54:20,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:54:20,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:54:20,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:54:20,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:54:20,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:54:20,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-31 01:54:20,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 577 transitions, 9773 flow. Second operand has 10 states, 10 states have (on average 120.6) internal successors, (1206), 10 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:54:20,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:54:20,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-31 01:54:20,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:54:29,995 INFO L130 PetriNetUnfolder]: 22735/42312 cut-off events. [2023-08-31 01:54:29,996 INFO L131 PetriNetUnfolder]: For 718692/721859 co-relation queries the response was YES. [2023-08-31 01:54:30,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244012 conditions, 42312 events. 22735/42312 cut-off events. For 718692/721859 co-relation queries the response was YES. Maximal size of possible extension queue 1453. Compared 395026 event pairs, 11967 based on Foata normal form. 579/42448 useless extension candidates. Maximal degree in co-relation 240844. Up to 34283 conditions per place. [2023-08-31 01:54:30,678 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 498 selfloop transitions, 21 changer transitions 54/639 dead transitions. [2023-08-31 01:54:30,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 639 transitions, 11465 flow [2023-08-31 01:54:30,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:54:30,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:54:30,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1160 transitions. [2023-08-31 01:54:30,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054466230936819 [2023-08-31 01:54:30,680 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1160 transitions. [2023-08-31 01:54:30,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1160 transitions. [2023-08-31 01:54:30,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:54:30,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1160 transitions. [2023-08-31 01:54:30,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.88888888888889) internal successors, (1160), 9 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:54:30,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:54:30,684 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:54:30,684 INFO L175 Difference]: Start difference. First operand has 296 places, 577 transitions, 9773 flow. Second operand 9 states and 1160 transitions. [2023-08-31 01:54:30,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 639 transitions, 11465 flow [2023-08-31 01:54:37,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 639 transitions, 11326 flow, removed 63 selfloop flow, removed 5 redundant places. [2023-08-31 01:54:37,015 INFO L231 Difference]: Finished difference. Result has 301 places, 557 transitions, 9351 flow [2023-08-31 01:54:37,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=9622, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9351, PETRI_PLACES=301, PETRI_TRANSITIONS=557} [2023-08-31 01:54:37,016 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 242 predicate places. [2023-08-31 01:54:37,016 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 557 transitions, 9351 flow [2023-08-31 01:54:37,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.6) internal successors, (1206), 10 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:54:37,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:54:37,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:54:37,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-31 01:54:37,017 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:54:37,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:54:37,017 INFO L85 PathProgramCache]: Analyzing trace with hash 584727243, now seen corresponding path program 30 times [2023-08-31 01:54:37,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:54:37,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559331761] [2023-08-31 01:54:37,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:54:37,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:54:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:54:37,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:54:37,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:54:37,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559331761] [2023-08-31 01:54:37,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559331761] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:54:37,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:54:37,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:54:37,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472562799] [2023-08-31 01:54:37,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:54:37,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:54:37,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:54:37,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:54:37,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-31 01:54:37,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-08-31 01:54:37,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 557 transitions, 9351 flow. Second operand has 8 states, 8 states have (on average 122.375) internal successors, (979), 8 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:54:37,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:54:37,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-08-31 01:54:37,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:54:46,187 INFO L130 PetriNetUnfolder]: 21218/39841 cut-off events. [2023-08-31 01:54:46,187 INFO L131 PetriNetUnfolder]: For 679844/682618 co-relation queries the response was YES. [2023-08-31 01:54:46,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230019 conditions, 39841 events. 21218/39841 cut-off events. For 679844/682618 co-relation queries the response was YES. Maximal size of possible extension queue 1413. Compared 372695 event pairs, 11047 based on Foata normal form. 488/39759 useless extension candidates. Maximal degree in co-relation 226836. Up to 31815 conditions per place. [2023-08-31 01:54:47,111 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 435 selfloop transitions, 26 changer transitions 37/619 dead transitions. [2023-08-31 01:54:47,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 619 transitions, 10929 flow [2023-08-31 01:54:47,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:54:47,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:54:47,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1055 transitions. [2023-08-31 01:54:47,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171568627450981 [2023-08-31 01:54:47,131 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1055 transitions. [2023-08-31 01:54:47,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1055 transitions. [2023-08-31 01:54:47,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:54:47,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1055 transitions. [2023-08-31 01:54:47,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 131.875) internal successors, (1055), 8 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:54:47,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:54:47,138 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:54:47,138 INFO L175 Difference]: Start difference. First operand has 301 places, 557 transitions, 9351 flow. Second operand 8 states and 1055 transitions. [2023-08-31 01:54:47,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 619 transitions, 10929 flow [2023-08-31 01:54:53,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 619 transitions, 10838 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-08-31 01:54:53,160 INFO L231 Difference]: Finished difference. Result has 302 places, 544 transitions, 9147 flow [2023-08-31 01:54:53,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=9266, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9147, PETRI_PLACES=302, PETRI_TRANSITIONS=544} [2023-08-31 01:54:53,162 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 243 predicate places. [2023-08-31 01:54:53,162 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 544 transitions, 9147 flow [2023-08-31 01:54:53,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 122.375) internal successors, (979), 8 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:54:53,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:54:53,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:54:53,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-31 01:54:53,163 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:54:53,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:54:53,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1371524607, now seen corresponding path program 31 times [2023-08-31 01:54:53,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:54:53,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362961911] [2023-08-31 01:54:53,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:54:53,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:54:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:54:53,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:54:53,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:54:53,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362961911] [2023-08-31 01:54:53,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362961911] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:54:53,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:54:53,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 01:54:53,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219267771] [2023-08-31 01:54:53,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:54:53,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:54:53,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:54:53,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:54:53,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:54:53,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-31 01:54:53,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 544 transitions, 9147 flow. Second operand has 11 states, 11 states have (on average 120.27272727272727) internal successors, (1323), 11 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:54:53,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:54:53,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-31 01:54:53,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:55:02,906 INFO L130 PetriNetUnfolder]: 21489/40418 cut-off events. [2023-08-31 01:55:02,906 INFO L131 PetriNetUnfolder]: For 687598/689798 co-relation queries the response was YES. [2023-08-31 01:55:03,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234338 conditions, 40418 events. 21489/40418 cut-off events. For 687598/689798 co-relation queries the response was YES. Maximal size of possible extension queue 1411. Compared 378922 event pairs, 9256 based on Foata normal form. 506/40512 useless extension candidates. Maximal degree in co-relation 231090. Up to 30164 conditions per place. [2023-08-31 01:55:03,562 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 438 selfloop transitions, 97 changer transitions 32/668 dead transitions. [2023-08-31 01:55:03,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 668 transitions, 11613 flow [2023-08-31 01:55:03,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:55:03,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:55:03,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1326 transitions. [2023-08-31 01:55:03,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2023-08-31 01:55:03,563 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1326 transitions. [2023-08-31 01:55:03,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1326 transitions. [2023-08-31 01:55:03,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:55:03,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1326 transitions. [2023-08-31 01:55:03,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 132.6) internal successors, (1326), 10 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:03,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 255.0) internal successors, (2805), 11 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:03,566 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 255.0) internal successors, (2805), 11 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:03,566 INFO L175 Difference]: Start difference. First operand has 302 places, 544 transitions, 9147 flow. Second operand 10 states and 1326 transitions. [2023-08-31 01:55:03,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 668 transitions, 11613 flow [2023-08-31 01:55:08,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 668 transitions, 11504 flow, removed 34 selfloop flow, removed 8 redundant places. [2023-08-31 01:55:08,767 INFO L231 Difference]: Finished difference. Result has 307 places, 564 transitions, 9762 flow [2023-08-31 01:55:08,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=9048, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9762, PETRI_PLACES=307, PETRI_TRANSITIONS=564} [2023-08-31 01:55:08,768 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 248 predicate places. [2023-08-31 01:55:08,768 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 564 transitions, 9762 flow [2023-08-31 01:55:08,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 120.27272727272727) internal successors, (1323), 11 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:08,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:55:08,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:55:08,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-31 01:55:08,768 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:55:08,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:55:08,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1939885911, now seen corresponding path program 32 times [2023-08-31 01:55:08,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:55:08,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566039084] [2023-08-31 01:55:08,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:55:08,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:55:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:55:09,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:55:09,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:55:09,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566039084] [2023-08-31 01:55:09,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566039084] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:55:09,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:55:09,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:55:09,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147292798] [2023-08-31 01:55:09,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:55:09,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:55:09,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:55:09,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:55:09,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:55:09,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-31 01:55:09,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 564 transitions, 9762 flow. Second operand has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:55:09,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:55:09,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-31 01:55:09,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:55:18,960 INFO L130 PetriNetUnfolder]: 21775/40709 cut-off events. [2023-08-31 01:55:18,960 INFO L131 PetriNetUnfolder]: For 719706/721984 co-relation queries the response was YES. [2023-08-31 01:55:19,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242091 conditions, 40709 events. 21775/40709 cut-off events. For 719706/721984 co-relation queries the response was YES. Maximal size of possible extension queue 1370. Compared 378005 event pairs, 9436 based on Foata normal form. 356/40744 useless extension candidates. Maximal degree in co-relation 238830. Up to 31384 conditions per place. [2023-08-31 01:55:19,662 INFO L137 encePairwiseOnDemand]: 242/255 looper letters, 498 selfloop transitions, 91 changer transitions 27/668 dead transitions. [2023-08-31 01:55:19,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 668 transitions, 12055 flow [2023-08-31 01:55:19,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:55:19,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:55:19,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1320 transitions. [2023-08-31 01:55:19,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176470588235295 [2023-08-31 01:55:19,664 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1320 transitions. [2023-08-31 01:55:19,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1320 transitions. [2023-08-31 01:55:19,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:55:19,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1320 transitions. [2023-08-31 01:55:19,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 132.0) internal successors, (1320), 10 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:19,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 255.0) internal successors, (2805), 11 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:19,667 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 255.0) internal successors, (2805), 11 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:19,667 INFO L175 Difference]: Start difference. First operand has 307 places, 564 transitions, 9762 flow. Second operand 10 states and 1320 transitions. [2023-08-31 01:55:19,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 668 transitions, 12055 flow [2023-08-31 01:55:25,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 668 transitions, 11951 flow, removed 52 selfloop flow, removed 1 redundant places. [2023-08-31 01:55:25,740 INFO L231 Difference]: Finished difference. Result has 316 places, 565 transitions, 9873 flow [2023-08-31 01:55:25,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=9670, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9873, PETRI_PLACES=316, PETRI_TRANSITIONS=565} [2023-08-31 01:55:25,741 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 257 predicate places. [2023-08-31 01:55:25,741 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 565 transitions, 9873 flow [2023-08-31 01:55:25,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:55:25,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:55:25,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:55:25,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-31 01:55:25,742 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:55:25,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:55:25,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1215928693, now seen corresponding path program 33 times [2023-08-31 01:55:25,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:55:25,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287932343] [2023-08-31 01:55:25,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:55:25,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:55:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:55:26,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:55:26,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:55:26,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287932343] [2023-08-31 01:55:26,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287932343] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:55:26,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:55:26,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-31 01:55:26,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120705379] [2023-08-31 01:55:26,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:55:26,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:55:26,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:55:26,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:55:26,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:55:26,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-31 01:55:26,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 565 transitions, 9873 flow. Second operand has 7 states, 7 states have (on average 122.14285714285714) internal successors, (855), 7 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:26,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:55:26,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-31 01:55:26,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:55:35,736 INFO L130 PetriNetUnfolder]: 21925/40631 cut-off events. [2023-08-31 01:55:35,736 INFO L131 PetriNetUnfolder]: For 734293/737369 co-relation queries the response was YES. [2023-08-31 01:55:36,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242307 conditions, 40631 events. 21925/40631 cut-off events. For 734293/737369 co-relation queries the response was YES. Maximal size of possible extension queue 1347. Compared 374094 event pairs, 10566 based on Foata normal form. 477/40704 useless extension candidates. Maximal degree in co-relation 242183. Up to 32275 conditions per place. [2023-08-31 01:55:36,431 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 505 selfloop transitions, 54 changer transitions 16/640 dead transitions. [2023-08-31 01:55:36,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 640 transitions, 11837 flow [2023-08-31 01:55:36,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:55:36,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:55:36,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 930 transitions. [2023-08-31 01:55:36,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210084033613446 [2023-08-31 01:55:36,432 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 930 transitions. [2023-08-31 01:55:36,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 930 transitions. [2023-08-31 01:55:36,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:55:36,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 930 transitions. [2023-08-31 01:55:36,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 132.85714285714286) internal successors, (930), 7 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:36,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:36,436 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:36,436 INFO L175 Difference]: Start difference. First operand has 316 places, 565 transitions, 9873 flow. Second operand 7 states and 930 transitions. [2023-08-31 01:55:36,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 640 transitions, 11837 flow [2023-08-31 01:55:43,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 640 transitions, 11728 flow, removed 34 selfloop flow, removed 4 redundant places. [2023-08-31 01:55:43,350 INFO L231 Difference]: Finished difference. Result has 317 places, 570 transitions, 10046 flow [2023-08-31 01:55:43,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=9772, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10046, PETRI_PLACES=317, PETRI_TRANSITIONS=570} [2023-08-31 01:55:43,351 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 258 predicate places. [2023-08-31 01:55:43,351 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 570 transitions, 10046 flow [2023-08-31 01:55:43,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 122.14285714285714) internal successors, (855), 7 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:43,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:55:43,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:55:43,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-31 01:55:43,352 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:55:43,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:55:43,352 INFO L85 PathProgramCache]: Analyzing trace with hash 334571437, now seen corresponding path program 34 times [2023-08-31 01:55:43,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:55:43,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870371864] [2023-08-31 01:55:43,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:55:43,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:55:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:55:43,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:55:43,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:55:43,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870371864] [2023-08-31 01:55:43,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870371864] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:55:43,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:55:43,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:55:43,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866640172] [2023-08-31 01:55:43,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:55:43,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:55:43,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:55:43,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:55:43,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:55:43,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-08-31 01:55:43,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 570 transitions, 10046 flow. Second operand has 10 states, 10 states have (on average 121.6) internal successors, (1216), 10 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:43,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:55:43,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-08-31 01:55:43,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:55:52,893 INFO L130 PetriNetUnfolder]: 21022/39199 cut-off events. [2023-08-31 01:55:52,894 INFO L131 PetriNetUnfolder]: For 717634/720725 co-relation queries the response was YES. [2023-08-31 01:55:53,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233861 conditions, 39199 events. 21022/39199 cut-off events. For 717634/720725 co-relation queries the response was YES. Maximal size of possible extension queue 1382. Compared 362103 event pairs, 10097 based on Foata normal form. 966/39606 useless extension candidates. Maximal degree in co-relation 233736. Up to 31788 conditions per place. [2023-08-31 01:55:53,583 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 431 selfloop transitions, 78 changer transitions 31/639 dead transitions. [2023-08-31 01:55:53,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 639 transitions, 11840 flow [2023-08-31 01:55:53,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:55:53,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:55:53,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1313 transitions. [2023-08-31 01:55:53,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5149019607843137 [2023-08-31 01:55:53,585 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1313 transitions. [2023-08-31 01:55:53,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1313 transitions. [2023-08-31 01:55:53,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:55:53,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1313 transitions. [2023-08-31 01:55:53,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 131.3) internal successors, (1313), 10 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:53,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 255.0) internal successors, (2805), 11 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:53,590 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 255.0) internal successors, (2805), 11 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:53,590 INFO L175 Difference]: Start difference. First operand has 317 places, 570 transitions, 10046 flow. Second operand 10 states and 1313 transitions. [2023-08-31 01:55:53,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 639 transitions, 11840 flow [2023-08-31 01:55:59,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 639 transitions, 11641 flow, removed 46 selfloop flow, removed 8 redundant places. [2023-08-31 01:55:59,987 INFO L231 Difference]: Finished difference. Result has 323 places, 564 transitions, 10005 flow [2023-08-31 01:55:59,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=9693, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10005, PETRI_PLACES=323, PETRI_TRANSITIONS=564} [2023-08-31 01:55:59,987 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 264 predicate places. [2023-08-31 01:55:59,988 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 564 transitions, 10005 flow [2023-08-31 01:55:59,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 121.6) internal successors, (1216), 10 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:59,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:55:59,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:55:59,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-31 01:55:59,988 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:55:59,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:55:59,989 INFO L85 PathProgramCache]: Analyzing trace with hash 310214349, now seen corresponding path program 35 times [2023-08-31 01:55:59,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:55:59,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945731374] [2023-08-31 01:55:59,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:55:59,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:56:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:56:00,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:56:00,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:56:00,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945731374] [2023-08-31 01:56:00,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945731374] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:56:00,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:56:00,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:56:00,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910475924] [2023-08-31 01:56:00,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:56:00,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:56:00,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:56:00,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:56:00,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:56:00,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-31 01:56:00,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 564 transitions, 10005 flow. Second operand has 10 states, 10 states have (on average 120.6) internal successors, (1206), 10 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:56:00,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:56:00,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-31 01:56:00,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:56:10,032 INFO L130 PetriNetUnfolder]: 21228/39046 cut-off events. [2023-08-31 01:56:10,032 INFO L131 PetriNetUnfolder]: For 711090/713808 co-relation queries the response was YES. [2023-08-31 01:56:10,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233556 conditions, 39046 events. 21228/39046 cut-off events. For 711090/713808 co-relation queries the response was YES. Maximal size of possible extension queue 1360. Compared 353685 event pairs, 10212 based on Foata normal form. 688/39220 useless extension candidates. Maximal degree in co-relation 233428. Up to 28063 conditions per place. [2023-08-31 01:56:11,091 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 429 selfloop transitions, 93 changer transitions 45/638 dead transitions. [2023-08-31 01:56:11,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 638 transitions, 11940 flow [2023-08-31 01:56:11,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:56:11,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:56:11,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1310 transitions. [2023-08-31 01:56:11,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5137254901960784 [2023-08-31 01:56:11,094 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1310 transitions. [2023-08-31 01:56:11,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1310 transitions. [2023-08-31 01:56:11,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:56:11,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1310 transitions. [2023-08-31 01:56:11,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 131.0) internal successors, (1310), 10 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:56:11,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 255.0) internal successors, (2805), 11 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:56:11,098 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 255.0) internal successors, (2805), 11 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:56:11,098 INFO L175 Difference]: Start difference. First operand has 323 places, 564 transitions, 10005 flow. Second operand 10 states and 1310 transitions. [2023-08-31 01:56:11,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 638 transitions, 11940 flow [2023-08-31 01:56:17,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 638 transitions, 11771 flow, removed 30 selfloop flow, removed 6 redundant places. [2023-08-31 01:56:17,631 INFO L231 Difference]: Finished difference. Result has 325 places, 546 transitions, 9674 flow [2023-08-31 01:56:17,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=9809, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9674, PETRI_PLACES=325, PETRI_TRANSITIONS=546} [2023-08-31 01:56:17,632 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 266 predicate places. [2023-08-31 01:56:17,632 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 546 transitions, 9674 flow [2023-08-31 01:56:17,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.6) internal successors, (1206), 10 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:56:17,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:56:17,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:56:17,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-31 01:56:17,633 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:56:17,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:56:17,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1812093319, now seen corresponding path program 36 times [2023-08-31 01:56:17,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:56:17,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062533075] [2023-08-31 01:56:17,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:56:17,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:56:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:56:18,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:56:18,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:56:18,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062533075] [2023-08-31 01:56:18,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062533075] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:56:18,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:56:18,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:56:18,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897887634] [2023-08-31 01:56:18,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:56:18,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:56:18,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:56:18,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:56:18,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:56:18,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-08-31 01:56:18,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 546 transitions, 9674 flow. Second operand has 9 states, 9 states have (on average 121.88888888888889) internal successors, (1097), 9 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:56:18,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:56:18,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-08-31 01:56:18,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:56:27,171 INFO L130 PetriNetUnfolder]: 20827/38713 cut-off events. [2023-08-31 01:56:27,172 INFO L131 PetriNetUnfolder]: For 694460/697361 co-relation queries the response was YES. [2023-08-31 01:56:27,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229146 conditions, 38713 events. 20827/38713 cut-off events. For 694460/697361 co-relation queries the response was YES. Maximal size of possible extension queue 1384. Compared 357063 event pairs, 8158 based on Foata normal form. 898/39049 useless extension candidates. Maximal degree in co-relation 229020. Up to 23739 conditions per place. [2023-08-31 01:56:27,883 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 435 selfloop transitions, 64 changer transitions 11/626 dead transitions. [2023-08-31 01:56:27,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 626 transitions, 11641 flow [2023-08-31 01:56:27,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:56:27,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:56:27,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1058 transitions. [2023-08-31 01:56:27,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186274509803922 [2023-08-31 01:56:27,885 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1058 transitions. [2023-08-31 01:56:27,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1058 transitions. [2023-08-31 01:56:27,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:56:27,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1058 transitions. [2023-08-31 01:56:27,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 132.25) internal successors, (1058), 8 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:56:27,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:56:27,888 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:56:27,888 INFO L175 Difference]: Start difference. First operand has 325 places, 546 transitions, 9674 flow. Second operand 8 states and 1058 transitions. [2023-08-31 01:56:27,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 626 transitions, 11641 flow [2023-08-31 01:56:34,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 626 transitions, 11252 flow, removed 98 selfloop flow, removed 11 redundant places. [2023-08-31 01:56:34,577 INFO L231 Difference]: Finished difference. Result has 320 places, 547 transitions, 9585 flow [2023-08-31 01:56:34,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=9273, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9585, PETRI_PLACES=320, PETRI_TRANSITIONS=547} [2023-08-31 01:56:34,578 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 261 predicate places. [2023-08-31 01:56:34,578 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 547 transitions, 9585 flow [2023-08-31 01:56:34,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 121.88888888888889) internal successors, (1097), 9 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:56:34,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:56:34,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:56:34,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-31 01:56:34,578 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:56:34,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:56:34,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1539216861, now seen corresponding path program 37 times [2023-08-31 01:56:34,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:56:34,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45430976] [2023-08-31 01:56:34,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:56:34,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:56:34,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:56:35,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:56:35,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:56:35,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45430976] [2023-08-31 01:56:35,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45430976] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:56:35,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:56:35,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:56:35,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599364287] [2023-08-31 01:56:35,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:56:35,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:56:35,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:56:35,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:56:35,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:56:35,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-31 01:56:35,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 547 transitions, 9585 flow. Second operand has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:56:35,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:56:35,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-31 01:56:35,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:56:44,337 INFO L130 PetriNetUnfolder]: 21501/39563 cut-off events. [2023-08-31 01:56:44,337 INFO L131 PetriNetUnfolder]: For 702783/705516 co-relation queries the response was YES. [2023-08-31 01:56:44,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235935 conditions, 39563 events. 21501/39563 cut-off events. For 702783/705516 co-relation queries the response was YES. Maximal size of possible extension queue 1353. Compared 360385 event pairs, 9144 based on Foata normal form. 668/39868 useless extension candidates. Maximal degree in co-relation 235807. Up to 31569 conditions per place. [2023-08-31 01:56:45,011 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 516 selfloop transitions, 35 changer transitions 11/607 dead transitions. [2023-08-31 01:56:45,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 607 transitions, 11271 flow [2023-08-31 01:56:45,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:56:45,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:56:45,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1163 transitions. [2023-08-31 01:56:45,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067538126361656 [2023-08-31 01:56:45,012 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1163 transitions. [2023-08-31 01:56:45,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1163 transitions. [2023-08-31 01:56:45,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:56:45,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1163 transitions. [2023-08-31 01:56:45,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 129.22222222222223) internal successors, (1163), 9 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:56:45,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:56:45,016 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:56:45,016 INFO L175 Difference]: Start difference. First operand has 320 places, 547 transitions, 9585 flow. Second operand 9 states and 1163 transitions. [2023-08-31 01:56:45,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 607 transitions, 11271 flow [2023-08-31 01:56:51,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 607 transitions, 11157 flow, removed 31 selfloop flow, removed 5 redundant places. [2023-08-31 01:56:51,884 INFO L231 Difference]: Finished difference. Result has 324 places, 541 transitions, 9504 flow [2023-08-31 01:56:51,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=9378, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9504, PETRI_PLACES=324, PETRI_TRANSITIONS=541} [2023-08-31 01:56:51,885 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 265 predicate places. [2023-08-31 01:56:51,886 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 541 transitions, 9504 flow [2023-08-31 01:56:51,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:56:51,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:56:51,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:56:51,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-31 01:56:51,887 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:56:51,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:56:51,887 INFO L85 PathProgramCache]: Analyzing trace with hash 903742431, now seen corresponding path program 38 times [2023-08-31 01:56:51,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:56:51,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954182952] [2023-08-31 01:56:51,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:56:51,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:56:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:56:52,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:56:52,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:56:52,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954182952] [2023-08-31 01:56:52,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954182952] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:56:52,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:56:52,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 01:56:52,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096192382] [2023-08-31 01:56:52,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:56:52,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 01:56:52,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:56:52,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 01:56:52,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-31 01:56:52,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 255 [2023-08-31 01:56:52,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 541 transitions, 9504 flow. Second operand has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:56:52,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:56:52,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 255 [2023-08-31 01:56:52,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:57:00,107 INFO L130 PetriNetUnfolder]: 18429/34246 cut-off events. [2023-08-31 01:57:00,107 INFO L131 PetriNetUnfolder]: For 642266/644619 co-relation queries the response was YES. [2023-08-31 01:57:00,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204717 conditions, 34246 events. 18429/34246 cut-off events. For 642266/644619 co-relation queries the response was YES. Maximal size of possible extension queue 1269. Compared 311600 event pairs, 10079 based on Foata normal form. 714/34250 useless extension candidates. Maximal degree in co-relation 204587. Up to 28089 conditions per place. [2023-08-31 01:57:00,700 INFO L137 encePairwiseOnDemand]: 248/255 looper letters, 380 selfloop transitions, 4 changer transitions 36/542 dead transitions. [2023-08-31 01:57:00,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 542 transitions, 10134 flow [2023-08-31 01:57:00,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:57:00,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:57:00,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 789 transitions. [2023-08-31 01:57:00,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515686274509804 [2023-08-31 01:57:00,702 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 789 transitions. [2023-08-31 01:57:00,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 789 transitions. [2023-08-31 01:57:00,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:57:00,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 789 transitions. [2023-08-31 01:57:00,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 131.5) internal successors, (789), 6 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) [2023-08-31 01:57:00,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:00,705 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:00,705 INFO L175 Difference]: Start difference. First operand has 324 places, 541 transitions, 9504 flow. Second operand 6 states and 789 transitions. [2023-08-31 01:57:00,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 542 transitions, 10134 flow [2023-08-31 01:57:05,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 542 transitions, 9962 flow, removed 25 selfloop flow, removed 12 redundant places. [2023-08-31 01:57:05,859 INFO L231 Difference]: Finished difference. Result has 316 places, 502 transitions, 8635 flow [2023-08-31 01:57:05,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=9040, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8635, PETRI_PLACES=316, PETRI_TRANSITIONS=502} [2023-08-31 01:57:05,860 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 257 predicate places. [2023-08-31 01:57:05,860 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 502 transitions, 8635 flow [2023-08-31 01:57:05,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:05,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:57:05,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:57:05,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-31 01:57:05,861 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:57:05,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:57:05,861 INFO L85 PathProgramCache]: Analyzing trace with hash 522842105, now seen corresponding path program 39 times [2023-08-31 01:57:05,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:57:05,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697465222] [2023-08-31 01:57:05,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:57:05,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:57:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:57:06,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:57:06,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:57:06,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697465222] [2023-08-31 01:57:06,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697465222] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:57:06,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:57:06,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-31 01:57:06,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742980005] [2023-08-31 01:57:06,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:57:06,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:57:06,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:57:06,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:57:06,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:57:06,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-08-31 01:57:06,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 502 transitions, 8635 flow. Second operand has 7 states, 7 states have (on average 123.14285714285714) internal successors, (862), 7 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:06,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:57:06,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-08-31 01:57:06,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:57:12,668 INFO L130 PetriNetUnfolder]: 15969/29293 cut-off events. [2023-08-31 01:57:12,669 INFO L131 PetriNetUnfolder]: For 534080/536150 co-relation queries the response was YES. [2023-08-31 01:57:12,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175666 conditions, 29293 events. 15969/29293 cut-off events. For 534080/536150 co-relation queries the response was YES. Maximal size of possible extension queue 1056. Compared 254696 event pairs, 7189 based on Foata normal form. 662/29530 useless extension candidates. Maximal degree in co-relation 175541. Up to 23530 conditions per place. [2023-08-31 01:57:13,070 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 398 selfloop transitions, 36 changer transitions 41/536 dead transitions. [2023-08-31 01:57:13,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 536 transitions, 9855 flow [2023-08-31 01:57:13,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:57:13,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:57:13,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 797 transitions. [2023-08-31 01:57:13,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5209150326797386 [2023-08-31 01:57:13,072 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 797 transitions. [2023-08-31 01:57:13,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 797 transitions. [2023-08-31 01:57:13,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:57:13,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 797 transitions. [2023-08-31 01:57:13,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 132.83333333333334) internal successors, (797), 6 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:13,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:13,074 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:13,074 INFO L175 Difference]: Start difference. First operand has 316 places, 502 transitions, 8635 flow. Second operand 6 states and 797 transitions. [2023-08-31 01:57:13,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 536 transitions, 9855 flow [2023-08-31 01:57:16,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 536 transitions, 9556 flow, removed 107 selfloop flow, removed 11 redundant places. [2023-08-31 01:57:16,908 INFO L231 Difference]: Finished difference. Result has 295 places, 462 transitions, 7707 flow [2023-08-31 01:57:16,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=8176, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7707, PETRI_PLACES=295, PETRI_TRANSITIONS=462} [2023-08-31 01:57:16,909 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 236 predicate places. [2023-08-31 01:57:16,909 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 462 transitions, 7707 flow [2023-08-31 01:57:16,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 123.14285714285714) internal successors, (862), 7 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:16,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:57:16,909 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:57:16,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-31 01:57:16,910 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:57:16,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:57:16,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1034263869, now seen corresponding path program 40 times [2023-08-31 01:57:16,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:57:16,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239265463] [2023-08-31 01:57:16,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:57:16,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:57:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:57:17,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:57:17,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:57:17,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239265463] [2023-08-31 01:57:17,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239265463] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:57:17,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:57:17,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:57:17,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27964905] [2023-08-31 01:57:17,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:57:17,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:57:17,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:57:17,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:57:17,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:57:17,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-31 01:57:17,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 462 transitions, 7707 flow. Second operand has 9 states, 9 states have (on average 121.11111111111111) internal successors, (1090), 9 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:17,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:57:17,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-31 01:57:17,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:57:24,237 INFO L130 PetriNetUnfolder]: 19684/32997 cut-off events. [2023-08-31 01:57:24,237 INFO L131 PetriNetUnfolder]: For 499405/501598 co-relation queries the response was YES. [2023-08-31 01:57:24,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187387 conditions, 32997 events. 19684/32997 cut-off events. For 499405/501598 co-relation queries the response was YES. Maximal size of possible extension queue 1135. Compared 260942 event pairs, 9231 based on Foata normal form. 839/33150 useless extension candidates. Maximal degree in co-relation 187269. Up to 13351 conditions per place. [2023-08-31 01:57:24,679 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 408 selfloop transitions, 19 changer transitions 202/728 dead transitions. [2023-08-31 01:57:24,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 728 transitions, 12445 flow [2023-08-31 01:57:24,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 01:57:24,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 01:57:24,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1454 transitions. [2023-08-31 01:57:24,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5183600713012477 [2023-08-31 01:57:24,681 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1454 transitions. [2023-08-31 01:57:24,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1454 transitions. [2023-08-31 01:57:24,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:57:24,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1454 transitions. [2023-08-31 01:57:24,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 132.1818181818182) internal successors, (1454), 11 states have internal predecessors, (1454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:24,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:24,684 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:24,684 INFO L175 Difference]: Start difference. First operand has 295 places, 462 transitions, 7707 flow. Second operand 11 states and 1454 transitions. [2023-08-31 01:57:24,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 728 transitions, 12445 flow [2023-08-31 01:57:28,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 728 transitions, 12250 flow, removed 74 selfloop flow, removed 7 redundant places. [2023-08-31 01:57:28,132 INFO L231 Difference]: Finished difference. Result has 297 places, 354 transitions, 5640 flow [2023-08-31 01:57:28,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=7604, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5640, PETRI_PLACES=297, PETRI_TRANSITIONS=354} [2023-08-31 01:57:28,133 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 238 predicate places. [2023-08-31 01:57:28,133 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 354 transitions, 5640 flow [2023-08-31 01:57:28,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 121.11111111111111) internal successors, (1090), 9 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:28,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:57:28,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:57:28,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-31 01:57:28,134 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:57:28,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:57:28,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1090402229, now seen corresponding path program 41 times [2023-08-31 01:57:28,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:57:28,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048991404] [2023-08-31 01:57:28,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:57:28,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:57:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:57:28,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:57:28,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:57:28,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048991404] [2023-08-31 01:57:28,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048991404] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:57:28,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:57:28,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:57:28,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036496230] [2023-08-31 01:57:28,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:57:28,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:57:28,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:57:28,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:57:28,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-08-31 01:57:28,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-31 01:57:28,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 354 transitions, 5640 flow. Second operand has 8 states, 8 states have (on average 120.625) internal successors, (965), 8 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:28,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:57:28,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-31 01:57:28,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:57:32,834 INFO L130 PetriNetUnfolder]: 11917/22775 cut-off events. [2023-08-31 01:57:32,834 INFO L131 PetriNetUnfolder]: For 335055/336380 co-relation queries the response was YES. [2023-08-31 01:57:33,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132536 conditions, 22775 events. 11917/22775 cut-off events. For 335055/336380 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 196670 event pairs, 3700 based on Foata normal form. 386/23029 useless extension candidates. Maximal degree in co-relation 132421. Up to 14236 conditions per place. [2023-08-31 01:57:33,105 INFO L137 encePairwiseOnDemand]: 239/255 looper letters, 295 selfloop transitions, 153 changer transitions 31/518 dead transitions. [2023-08-31 01:57:33,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 518 transitions, 8784 flow [2023-08-31 01:57:33,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:57:33,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:57:33,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1214 transitions. [2023-08-31 01:57:33,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289760348583878 [2023-08-31 01:57:33,108 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1214 transitions. [2023-08-31 01:57:33,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1214 transitions. [2023-08-31 01:57:33,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:57:33,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1214 transitions. [2023-08-31 01:57:33,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 134.88888888888889) internal successors, (1214), 9 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:33,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:33,111 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:33,111 INFO L175 Difference]: Start difference. First operand has 297 places, 354 transitions, 5640 flow. Second operand 9 states and 1214 transitions. [2023-08-31 01:57:33,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 518 transitions, 8784 flow [2023-08-31 01:57:35,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 518 transitions, 8303 flow, removed 133 selfloop flow, removed 30 redundant places. [2023-08-31 01:57:35,377 INFO L231 Difference]: Finished difference. Result has 276 places, 394 transitions, 6787 flow [2023-08-31 01:57:35,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=5319, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6787, PETRI_PLACES=276, PETRI_TRANSITIONS=394} [2023-08-31 01:57:35,378 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 217 predicate places. [2023-08-31 01:57:35,378 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 394 transitions, 6787 flow [2023-08-31 01:57:35,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 120.625) internal successors, (965), 8 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:35,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:57:35,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:57:35,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-31 01:57:35,378 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:57:35,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:57:35,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1905190333, now seen corresponding path program 42 times [2023-08-31 01:57:35,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:57:35,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477290508] [2023-08-31 01:57:35,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:57:35,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:57:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:57:35,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:57:35,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:57:35,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477290508] [2023-08-31 01:57:35,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477290508] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:57:35,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:57:35,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:57:35,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307556] [2023-08-31 01:57:35,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:57:35,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:57:35,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:57:35,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:57:35,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-31 01:57:35,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-31 01:57:35,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 394 transitions, 6787 flow. Second operand has 8 states, 8 states have (on average 121.625) internal successors, (973), 8 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:35,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:57:35,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-31 01:57:35,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:57:39,836 INFO L130 PetriNetUnfolder]: 11653/21950 cut-off events. [2023-08-31 01:57:39,837 INFO L131 PetriNetUnfolder]: For 304161/305804 co-relation queries the response was YES. [2023-08-31 01:57:40,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123864 conditions, 21950 events. 11653/21950 cut-off events. For 304161/305804 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 186425 event pairs, 5386 based on Foata normal form. 152/21823 useless extension candidates. Maximal degree in co-relation 123761. Up to 18748 conditions per place. [2023-08-31 01:57:40,071 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 348 selfloop transitions, 20 changer transitions 0/418 dead transitions. [2023-08-31 01:57:40,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 418 transitions, 7697 flow [2023-08-31 01:57:40,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:57:40,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:57:40,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 896 transitions. [2023-08-31 01:57:40,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019607843137255 [2023-08-31 01:57:40,073 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 896 transitions. [2023-08-31 01:57:40,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 896 transitions. [2023-08-31 01:57:40,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:57:40,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 896 transitions. [2023-08-31 01:57:40,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:40,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:40,076 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:40,076 INFO L175 Difference]: Start difference. First operand has 276 places, 394 transitions, 6787 flow. Second operand 7 states and 896 transitions. [2023-08-31 01:57:40,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 418 transitions, 7697 flow [2023-08-31 01:57:42,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 418 transitions, 7525 flow, removed 73 selfloop flow, removed 2 redundant places. [2023-08-31 01:57:42,107 INFO L231 Difference]: Finished difference. Result has 282 places, 395 transitions, 6691 flow [2023-08-31 01:57:42,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=6615, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6691, PETRI_PLACES=282, PETRI_TRANSITIONS=395} [2023-08-31 01:57:42,107 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 223 predicate places. [2023-08-31 01:57:42,107 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 395 transitions, 6691 flow [2023-08-31 01:57:42,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 121.625) internal successors, (973), 8 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:42,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:57:42,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:57:42,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-31 01:57:42,108 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:57:42,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:57:42,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1139417843, now seen corresponding path program 43 times [2023-08-31 01:57:42,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:57:42,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185981748] [2023-08-31 01:57:42,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:57:42,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:57:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:57:42,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:57:42,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:57:42,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185981748] [2023-08-31 01:57:42,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185981748] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:57:42,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:57:42,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:57:42,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195017482] [2023-08-31 01:57:42,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:57:42,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:57:42,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:57:42,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:57:42,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:57:42,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-08-31 01:57:42,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 395 transitions, 6691 flow. Second operand has 10 states, 10 states have (on average 121.6) internal successors, (1216), 10 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:42,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:57:42,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-08-31 01:57:42,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:57:46,794 INFO L130 PetriNetUnfolder]: 11852/22416 cut-off events. [2023-08-31 01:57:46,795 INFO L131 PetriNetUnfolder]: For 303238/304739 co-relation queries the response was YES. [2023-08-31 01:57:47,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125694 conditions, 22416 events. 11852/22416 cut-off events. For 303238/304739 co-relation queries the response was YES. Maximal size of possible extension queue 745. Compared 192208 event pairs, 5280 based on Foata normal form. 320/22420 useless extension candidates. Maximal degree in co-relation 125590. Up to 18610 conditions per place. [2023-08-31 01:57:47,105 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 352 selfloop transitions, 23 changer transitions 2/439 dead transitions. [2023-08-31 01:57:47,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 439 transitions, 7842 flow [2023-08-31 01:57:47,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:57:47,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:57:47,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1152 transitions. [2023-08-31 01:57:47,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019607843137255 [2023-08-31 01:57:47,106 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1152 transitions. [2023-08-31 01:57:47,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1152 transitions. [2023-08-31 01:57:47,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:57:47,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1152 transitions. [2023-08-31 01:57:47,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.0) internal successors, (1152), 9 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:47,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:47,109 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:47,109 INFO L175 Difference]: Start difference. First operand has 282 places, 395 transitions, 6691 flow. Second operand 9 states and 1152 transitions. [2023-08-31 01:57:47,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 439 transitions, 7842 flow [2023-08-31 01:57:49,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 439 transitions, 7796 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-31 01:57:49,140 INFO L231 Difference]: Finished difference. Result has 288 places, 400 transitions, 6811 flow [2023-08-31 01:57:49,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=6645, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6811, PETRI_PLACES=288, PETRI_TRANSITIONS=400} [2023-08-31 01:57:49,141 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 229 predicate places. [2023-08-31 01:57:49,141 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 400 transitions, 6811 flow [2023-08-31 01:57:49,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 121.6) internal successors, (1216), 10 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:49,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:57:49,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:57:49,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-08-31 01:57:49,142 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:57:49,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:57:49,142 INFO L85 PathProgramCache]: Analyzing trace with hash 504172415, now seen corresponding path program 44 times [2023-08-31 01:57:49,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:57:49,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879999134] [2023-08-31 01:57:49,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:57:49,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:57:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:57:49,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:57:49,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:57:49,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879999134] [2023-08-31 01:57:49,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879999134] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:57:49,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:57:49,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 01:57:49,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322553309] [2023-08-31 01:57:49,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:57:49,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:57:49,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:57:49,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:57:49,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:57:49,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-31 01:57:49,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 400 transitions, 6811 flow. Second operand has 11 states, 11 states have (on average 119.36363636363636) internal successors, (1313), 11 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:49,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:57:49,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-31 01:57:49,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:57:54,080 INFO L130 PetriNetUnfolder]: 12157/23173 cut-off events. [2023-08-31 01:57:54,080 INFO L131 PetriNetUnfolder]: For 309003/310491 co-relation queries the response was YES. [2023-08-31 01:57:54,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130104 conditions, 23173 events. 12157/23173 cut-off events. For 309003/310491 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 200241 event pairs, 4334 based on Foata normal form. 202/23237 useless extension candidates. Maximal degree in co-relation 129997. Up to 18369 conditions per place. [2023-08-31 01:57:54,457 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 346 selfloop transitions, 56 changer transitions 18/459 dead transitions. [2023-08-31 01:57:54,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 459 transitions, 8270 flow [2023-08-31 01:57:54,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:57:54,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:57:54,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1152 transitions. [2023-08-31 01:57:54,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019607843137255 [2023-08-31 01:57:54,459 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1152 transitions. [2023-08-31 01:57:54,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1152 transitions. [2023-08-31 01:57:54,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:57:54,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1152 transitions. [2023-08-31 01:57:54,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.0) internal successors, (1152), 9 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:54,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:54,463 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:54,463 INFO L175 Difference]: Start difference. First operand has 288 places, 400 transitions, 6811 flow. Second operand 9 states and 1152 transitions. [2023-08-31 01:57:54,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 459 transitions, 8270 flow [2023-08-31 01:57:56,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 459 transitions, 8195 flow, removed 23 selfloop flow, removed 4 redundant places. [2023-08-31 01:57:56,795 INFO L231 Difference]: Finished difference. Result has 296 places, 404 transitions, 6995 flow [2023-08-31 01:57:56,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=6737, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6995, PETRI_PLACES=296, PETRI_TRANSITIONS=404} [2023-08-31 01:57:56,796 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 237 predicate places. [2023-08-31 01:57:56,796 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 404 transitions, 6995 flow [2023-08-31 01:57:56,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 119.36363636363636) internal successors, (1313), 11 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:56,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:57:56,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:57:56,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-08-31 01:57:56,797 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:57:56,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:57:56,797 INFO L85 PathProgramCache]: Analyzing trace with hash 717098219, now seen corresponding path program 45 times [2023-08-31 01:57:56,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:57:56,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044650448] [2023-08-31 01:57:56,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:57:56,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:57:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:57:57,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:57:57,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:57:57,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044650448] [2023-08-31 01:57:57,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044650448] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:57:57,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:57:57,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 01:57:57,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698670807] [2023-08-31 01:57:57,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:57:57,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:57:57,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:57:57,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:57:57,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:57:57,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-31 01:57:57,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 404 transitions, 6995 flow. Second operand has 11 states, 11 states have (on average 119.36363636363636) internal successors, (1313), 11 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:57:57,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:57:57,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-31 01:57:57,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:58:00,238 INFO L130 PetriNetUnfolder]: 8189/15299 cut-off events. [2023-08-31 01:58:00,239 INFO L131 PetriNetUnfolder]: For 219629/220091 co-relation queries the response was YES. [2023-08-31 01:58:00,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90323 conditions, 15299 events. 8189/15299 cut-off events. For 219629/220091 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 121219 event pairs, 2853 based on Foata normal form. 442/15652 useless extension candidates. Maximal degree in co-relation 90212. Up to 7209 conditions per place. [2023-08-31 01:58:00,405 INFO L137 encePairwiseOnDemand]: 241/255 looper letters, 294 selfloop transitions, 162 changer transitions 58/539 dead transitions. [2023-08-31 01:58:00,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 539 transitions, 9469 flow [2023-08-31 01:58:00,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-31 01:58:00,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-31 01:58:00,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2066 transitions. [2023-08-31 01:58:00,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5063725490196078 [2023-08-31 01:58:00,407 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2066 transitions. [2023-08-31 01:58:00,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2066 transitions. [2023-08-31 01:58:00,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:58:00,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2066 transitions. [2023-08-31 01:58:00,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 129.125) internal successors, (2066), 16 states have internal predecessors, (2066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:00,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 255.0) internal successors, (4335), 17 states have internal predecessors, (4335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:00,411 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 255.0) internal successors, (4335), 17 states have internal predecessors, (4335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:00,411 INFO L175 Difference]: Start difference. First operand has 296 places, 404 transitions, 6995 flow. Second operand 16 states and 2066 transitions. [2023-08-31 01:58:00,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 539 transitions, 9469 flow [2023-08-31 01:58:01,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 539 transitions, 9349 flow, removed 18 selfloop flow, removed 12 redundant places. [2023-08-31 01:58:01,814 INFO L231 Difference]: Finished difference. Result has 297 places, 366 transitions, 7045 flow [2023-08-31 01:58:01,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=6376, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=7045, PETRI_PLACES=297, PETRI_TRANSITIONS=366} [2023-08-31 01:58:01,815 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 238 predicate places. [2023-08-31 01:58:01,815 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 366 transitions, 7045 flow [2023-08-31 01:58:01,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 119.36363636363636) internal successors, (1313), 11 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:01,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:58:01,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:58:01,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-08-31 01:58:01,816 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:58:01,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:58:01,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1845096327, now seen corresponding path program 46 times [2023-08-31 01:58:01,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:58:01,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41705778] [2023-08-31 01:58:01,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:58:01,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:58:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:58:02,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:58:02,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:58:02,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41705778] [2023-08-31 01:58:02,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41705778] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:58:02,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:58:02,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:58:02,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795264751] [2023-08-31 01:58:02,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:58:02,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:58:02,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:58:02,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:58:02,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:58:02,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-08-31 01:58:02,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 366 transitions, 7045 flow. Second operand has 9 states, 9 states have (on average 121.88888888888889) internal successors, (1097), 9 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:02,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:58:02,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-08-31 01:58:02,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:58:05,357 INFO L130 PetriNetUnfolder]: 7389/14263 cut-off events. [2023-08-31 01:58:05,357 INFO L131 PetriNetUnfolder]: For 252272/252718 co-relation queries the response was YES. [2023-08-31 01:58:05,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89108 conditions, 14263 events. 7389/14263 cut-off events. For 252272/252718 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 115643 event pairs, 3084 based on Foata normal form. 278/14413 useless extension candidates. Maximal degree in co-relation 88990. Up to 10662 conditions per place. [2023-08-31 01:58:05,523 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 310 selfloop transitions, 36 changer transitions 20/411 dead transitions. [2023-08-31 01:58:05,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 411 transitions, 8321 flow [2023-08-31 01:58:05,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:58:05,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:58:05,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1035 transitions. [2023-08-31 01:58:05,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5073529411764706 [2023-08-31 01:58:05,525 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1035 transitions. [2023-08-31 01:58:05,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1035 transitions. [2023-08-31 01:58:05,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:58:05,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1035 transitions. [2023-08-31 01:58:05,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.375) internal successors, (1035), 8 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:05,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:05,527 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:05,527 INFO L175 Difference]: Start difference. First operand has 297 places, 366 transitions, 7045 flow. Second operand 8 states and 1035 transitions. [2023-08-31 01:58:05,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 411 transitions, 8321 flow [2023-08-31 01:58:07,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 411 transitions, 7843 flow, removed 142 selfloop flow, removed 13 redundant places. [2023-08-31 01:58:07,444 INFO L231 Difference]: Finished difference. Result has 286 places, 365 transitions, 6652 flow [2023-08-31 01:58:07,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=6591, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6652, PETRI_PLACES=286, PETRI_TRANSITIONS=365} [2023-08-31 01:58:07,445 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 227 predicate places. [2023-08-31 01:58:07,445 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 365 transitions, 6652 flow [2023-08-31 01:58:07,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 121.88888888888889) internal successors, (1097), 9 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:07,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:58:07,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:58:07,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-08-31 01:58:07,446 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:58:07,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:58:07,447 INFO L85 PathProgramCache]: Analyzing trace with hash -913608869, now seen corresponding path program 47 times [2023-08-31 01:58:07,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:58:07,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700353420] [2023-08-31 01:58:07,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:58:07,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:58:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:58:07,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:58:07,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:58:07,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700353420] [2023-08-31 01:58:07,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700353420] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:58:07,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:58:07,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:58:07,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250028909] [2023-08-31 01:58:07,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:58:07,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:58:07,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:58:07,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:58:07,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:58:07,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-08-31 01:58:07,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 365 transitions, 6652 flow. Second operand has 9 states, 9 states have (on average 122.0) internal successors, (1098), 9 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:07,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:58:07,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-08-31 01:58:07,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:58:10,654 INFO L130 PetriNetUnfolder]: 7481/14425 cut-off events. [2023-08-31 01:58:10,654 INFO L131 PetriNetUnfolder]: For 225190/225598 co-relation queries the response was YES. [2023-08-31 01:58:10,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86378 conditions, 14425 events. 7481/14425 cut-off events. For 225190/225598 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 117527 event pairs, 3302 based on Foata normal form. 280/14583 useless extension candidates. Maximal degree in co-relation 86266. Up to 10796 conditions per place. [2023-08-31 01:58:10,789 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 280 selfloop transitions, 42 changer transitions 18/385 dead transitions. [2023-08-31 01:58:10,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 385 transitions, 7413 flow [2023-08-31 01:58:10,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:58:10,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:58:10,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1029 transitions. [2023-08-31 01:58:10,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5044117647058823 [2023-08-31 01:58:10,791 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1029 transitions. [2023-08-31 01:58:10,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1029 transitions. [2023-08-31 01:58:10,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:58:10,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1029 transitions. [2023-08-31 01:58:10,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.625) internal successors, (1029), 8 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:10,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:10,794 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:10,794 INFO L175 Difference]: Start difference. First operand has 286 places, 365 transitions, 6652 flow. Second operand 8 states and 1029 transitions. [2023-08-31 01:58:10,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 385 transitions, 7413 flow [2023-08-31 01:58:11,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 385 transitions, 7303 flow, removed 17 selfloop flow, removed 7 redundant places. [2023-08-31 01:58:11,937 INFO L231 Difference]: Finished difference. Result has 286 places, 351 transitions, 6350 flow [2023-08-31 01:58:11,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=6312, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6350, PETRI_PLACES=286, PETRI_TRANSITIONS=351} [2023-08-31 01:58:11,938 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 227 predicate places. [2023-08-31 01:58:11,938 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 351 transitions, 6350 flow [2023-08-31 01:58:11,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 122.0) internal successors, (1098), 9 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:11,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:58:11,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:58:11,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-08-31 01:58:11,938 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:58:11,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:58:11,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1649211397, now seen corresponding path program 48 times [2023-08-31 01:58:11,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:58:11,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850549969] [2023-08-31 01:58:11,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:58:11,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:58:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:58:12,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:58:12,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:58:12,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850549969] [2023-08-31 01:58:12,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850549969] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:58:12,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:58:12,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 01:58:12,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616468384] [2023-08-31 01:58:12,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:58:12,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:58:12,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:58:12,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:58:12,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:58:12,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-31 01:58:12,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 351 transitions, 6350 flow. Second operand has 11 states, 11 states have (on average 119.36363636363636) internal successors, (1313), 11 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:12,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:58:12,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-31 01:58:12,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:58:15,477 INFO L130 PetriNetUnfolder]: 7605/14785 cut-off events. [2023-08-31 01:58:15,477 INFO L131 PetriNetUnfolder]: For 219893/220275 co-relation queries the response was YES. [2023-08-31 01:58:15,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87073 conditions, 14785 events. 7605/14785 cut-off events. For 219893/220275 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 122024 event pairs, 3367 based on Foata normal form. 284/14990 useless extension candidates. Maximal degree in co-relation 86961. Up to 10938 conditions per place. [2023-08-31 01:58:15,642 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 288 selfloop transitions, 55 changer transitions 22/390 dead transitions. [2023-08-31 01:58:15,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 390 transitions, 7482 flow [2023-08-31 01:58:15,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:58:15,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:58:15,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1259 transitions. [2023-08-31 01:58:15,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937254901960784 [2023-08-31 01:58:15,644 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1259 transitions. [2023-08-31 01:58:15,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1259 transitions. [2023-08-31 01:58:15,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:58:15,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1259 transitions. [2023-08-31 01:58:15,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 125.9) internal successors, (1259), 10 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:15,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 255.0) internal successors, (2805), 11 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:15,647 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 255.0) internal successors, (2805), 11 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:15,647 INFO L175 Difference]: Start difference. First operand has 286 places, 351 transitions, 6350 flow. Second operand 10 states and 1259 transitions. [2023-08-31 01:58:15,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 390 transitions, 7482 flow [2023-08-31 01:58:16,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 390 transitions, 7376 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-08-31 01:58:16,763 INFO L231 Difference]: Finished difference. Result has 288 places, 349 transitions, 6302 flow [2023-08-31 01:58:16,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=6246, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6302, PETRI_PLACES=288, PETRI_TRANSITIONS=349} [2023-08-31 01:58:16,764 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 229 predicate places. [2023-08-31 01:58:16,764 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 349 transitions, 6302 flow [2023-08-31 01:58:16,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 119.36363636363636) internal successors, (1313), 11 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:16,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:58:16,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:58:16,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-08-31 01:58:16,764 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:58:16,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:58:16,765 INFO L85 PathProgramCache]: Analyzing trace with hash 515200669, now seen corresponding path program 49 times [2023-08-31 01:58:16,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:58:16,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192885034] [2023-08-31 01:58:16,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:58:16,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:58:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:58:17,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:58:17,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:58:17,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192885034] [2023-08-31 01:58:17,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192885034] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:58:17,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:58:17,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:58:17,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147833878] [2023-08-31 01:58:17,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:58:17,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:58:17,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:58:17,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:58:17,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:58:17,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-31 01:58:17,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 349 transitions, 6302 flow. Second operand has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:58:17,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:58:17,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-31 01:58:17,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:58:19,995 INFO L130 PetriNetUnfolder]: 7269/14249 cut-off events. [2023-08-31 01:58:19,996 INFO L131 PetriNetUnfolder]: For 211347/211721 co-relation queries the response was YES. [2023-08-31 01:58:20,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84593 conditions, 14249 events. 7269/14249 cut-off events. For 211347/211721 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 117530 event pairs, 3273 based on Foata normal form. 166/14336 useless extension candidates. Maximal degree in co-relation 84481. Up to 11015 conditions per place. [2023-08-31 01:58:20,469 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 304 selfloop transitions, 48 changer transitions 19/396 dead transitions. [2023-08-31 01:58:20,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 396 transitions, 7604 flow [2023-08-31 01:58:20,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:58:20,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:58:20,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1141 transitions. [2023-08-31 01:58:20,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4971677559912854 [2023-08-31 01:58:20,471 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1141 transitions. [2023-08-31 01:58:20,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1141 transitions. [2023-08-31 01:58:20,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:58:20,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1141 transitions. [2023-08-31 01:58:20,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.77777777777777) internal successors, (1141), 9 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:20,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:20,479 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:20,479 INFO L175 Difference]: Start difference. First operand has 288 places, 349 transitions, 6302 flow. Second operand 9 states and 1141 transitions. [2023-08-31 01:58:20,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 396 transitions, 7604 flow [2023-08-31 01:58:21,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 396 transitions, 7511 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-31 01:58:21,581 INFO L231 Difference]: Finished difference. Result has 293 places, 355 transitions, 6472 flow [2023-08-31 01:58:21,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=6211, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6472, PETRI_PLACES=293, PETRI_TRANSITIONS=355} [2023-08-31 01:58:21,581 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 234 predicate places. [2023-08-31 01:58:21,581 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 355 transitions, 6472 flow [2023-08-31 01:58:21,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:58:21,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:58:21,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:58:21,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-08-31 01:58:21,582 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:58:21,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:58:21,582 INFO L85 PathProgramCache]: Analyzing trace with hash 753856653, now seen corresponding path program 50 times [2023-08-31 01:58:21,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:58:21,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883434915] [2023-08-31 01:58:21,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:58:21,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:58:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:58:22,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:58:22,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:58:22,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883434915] [2023-08-31 01:58:22,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883434915] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:58:22,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:58:22,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:58:22,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543889016] [2023-08-31 01:58:22,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:58:22,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:58:22,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:58:22,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:58:22,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:58:22,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-31 01:58:22,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 355 transitions, 6472 flow. Second operand has 10 states, 10 states have (on average 120.6) internal successors, (1206), 10 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:22,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:58:22,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-31 01:58:22,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:58:24,863 INFO L130 PetriNetUnfolder]: 7022/13666 cut-off events. [2023-08-31 01:58:24,863 INFO L131 PetriNetUnfolder]: For 209097/209725 co-relation queries the response was YES. [2023-08-31 01:58:24,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81885 conditions, 13666 events. 7022/13666 cut-off events. For 209097/209725 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 111629 event pairs, 2855 based on Foata normal form. 304/13784 useless extension candidates. Maximal degree in co-relation 81770. Up to 10468 conditions per place. [2023-08-31 01:58:25,027 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 303 selfloop transitions, 44 changer transitions 13/400 dead transitions. [2023-08-31 01:58:25,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 400 transitions, 7652 flow [2023-08-31 01:58:25,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:58:25,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:58:25,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1270 transitions. [2023-08-31 01:58:25,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980392156862745 [2023-08-31 01:58:25,028 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1270 transitions. [2023-08-31 01:58:25,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1270 transitions. [2023-08-31 01:58:25,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:58:25,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1270 transitions. [2023-08-31 01:58:25,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 127.0) internal successors, (1270), 10 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:25,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 255.0) internal successors, (2805), 11 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:25,031 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 255.0) internal successors, (2805), 11 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:25,031 INFO L175 Difference]: Start difference. First operand has 293 places, 355 transitions, 6472 flow. Second operand 10 states and 1270 transitions. [2023-08-31 01:58:25,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 400 transitions, 7652 flow [2023-08-31 01:58:26,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 400 transitions, 7482 flow, removed 65 selfloop flow, removed 3 redundant places. [2023-08-31 01:58:26,386 INFO L231 Difference]: Finished difference. Result has 302 places, 355 transitions, 6430 flow [2023-08-31 01:58:26,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=6305, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6430, PETRI_PLACES=302, PETRI_TRANSITIONS=355} [2023-08-31 01:58:26,387 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 243 predicate places. [2023-08-31 01:58:26,387 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 355 transitions, 6430 flow [2023-08-31 01:58:26,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.6) internal successors, (1206), 10 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:26,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:58:26,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:58:26,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-08-31 01:58:26,388 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:58:26,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:58:26,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1055685895, now seen corresponding path program 51 times [2023-08-31 01:58:26,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:58:26,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893689997] [2023-08-31 01:58:26,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:58:26,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:58:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:58:26,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:58:26,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:58:26,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893689997] [2023-08-31 01:58:26,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893689997] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:58:26,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:58:26,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:58:26,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308439227] [2023-08-31 01:58:26,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:58:26,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:58:26,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:58:26,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:58:26,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-08-31 01:58:26,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-08-31 01:58:26,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 355 transitions, 6430 flow. Second operand has 8 states, 8 states have (on average 122.375) internal successors, (979), 8 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:26,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:58:26,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-08-31 01:58:26,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:58:29,313 INFO L130 PetriNetUnfolder]: 6210/12570 cut-off events. [2023-08-31 01:58:29,313 INFO L131 PetriNetUnfolder]: For 204491/204913 co-relation queries the response was YES. [2023-08-31 01:58:29,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76668 conditions, 12570 events. 6210/12570 cut-off events. For 204491/204913 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 104594 event pairs, 2703 based on Foata normal form. 228/12693 useless extension candidates. Maximal degree in co-relation 76549. Up to 9154 conditions per place. [2023-08-31 01:58:29,422 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 271 selfloop transitions, 33 changer transitions 31/387 dead transitions. [2023-08-31 01:58:29,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 387 transitions, 7429 flow [2023-08-31 01:58:29,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:58:29,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:58:29,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1029 transitions. [2023-08-31 01:58:29,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5044117647058823 [2023-08-31 01:58:29,424 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1029 transitions. [2023-08-31 01:58:29,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1029 transitions. [2023-08-31 01:58:29,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:58:29,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1029 transitions. [2023-08-31 01:58:29,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.625) internal successors, (1029), 8 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:29,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:29,427 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:29,427 INFO L175 Difference]: Start difference. First operand has 302 places, 355 transitions, 6430 flow. Second operand 8 states and 1029 transitions. [2023-08-31 01:58:29,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 387 transitions, 7429 flow [2023-08-31 01:58:30,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 387 transitions, 7298 flow, removed 18 selfloop flow, removed 9 redundant places. [2023-08-31 01:58:30,452 INFO L231 Difference]: Finished difference. Result has 302 places, 341 transitions, 6074 flow [2023-08-31 01:58:30,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=6299, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6074, PETRI_PLACES=302, PETRI_TRANSITIONS=341} [2023-08-31 01:58:30,453 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 243 predicate places. [2023-08-31 01:58:30,453 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 341 transitions, 6074 flow [2023-08-31 01:58:30,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 122.375) internal successors, (979), 8 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:30,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:58:30,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:58:30,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-08-31 01:58:30,453 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:58:30,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:58:30,454 INFO L85 PathProgramCache]: Analyzing trace with hash 321231551, now seen corresponding path program 52 times [2023-08-31 01:58:30,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:58:30,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769475340] [2023-08-31 01:58:30,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:58:30,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:58:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:58:30,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:58:30,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:58:30,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769475340] [2023-08-31 01:58:30,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769475340] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:58:30,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:58:30,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-31 01:58:30,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790492593] [2023-08-31 01:58:30,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:58:30,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:58:30,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:58:30,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:58:30,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-08-31 01:58:30,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-31 01:58:30,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 341 transitions, 6074 flow. Second operand has 12 states, 12 states have (on average 119.08333333333333) internal successors, (1429), 12 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:30,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:58:30,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-31 01:58:30,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:58:33,245 INFO L130 PetriNetUnfolder]: 5547/11081 cut-off events. [2023-08-31 01:58:33,245 INFO L131 PetriNetUnfolder]: For 187357/187769 co-relation queries the response was YES. [2023-08-31 01:58:33,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69412 conditions, 11081 events. 5547/11081 cut-off events. For 187357/187769 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 88858 event pairs, 2005 based on Foata normal form. 230/11214 useless extension candidates. Maximal degree in co-relation 69294. Up to 8144 conditions per place. [2023-08-31 01:58:33,345 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 278 selfloop transitions, 42 changer transitions 42/387 dead transitions. [2023-08-31 01:58:33,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 387 transitions, 7275 flow [2023-08-31 01:58:33,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:58:33,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:58:33,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1272 transitions. [2023-08-31 01:58:33,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4988235294117647 [2023-08-31 01:58:33,347 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1272 transitions. [2023-08-31 01:58:33,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1272 transitions. [2023-08-31 01:58:33,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:58:33,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1272 transitions. [2023-08-31 01:58:33,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 127.2) internal successors, (1272), 10 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:33,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 255.0) internal successors, (2805), 11 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:33,351 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 255.0) internal successors, (2805), 11 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:33,351 INFO L175 Difference]: Start difference. First operand has 302 places, 341 transitions, 6074 flow. Second operand 10 states and 1272 transitions. [2023-08-31 01:58:33,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 387 transitions, 7275 flow [2023-08-31 01:58:34,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 387 transitions, 7161 flow, removed 12 selfloop flow, removed 8 redundant places. [2023-08-31 01:58:34,240 INFO L231 Difference]: Finished difference. Result has 303 places, 327 transitions, 5812 flow [2023-08-31 01:58:34,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=5934, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5812, PETRI_PLACES=303, PETRI_TRANSITIONS=327} [2023-08-31 01:58:34,241 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 244 predicate places. [2023-08-31 01:58:34,241 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 327 transitions, 5812 flow [2023-08-31 01:58:34,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 119.08333333333333) internal successors, (1429), 12 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:34,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:58:34,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:58:34,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-08-31 01:58:34,242 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:58:34,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:58:34,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1071552623, now seen corresponding path program 53 times [2023-08-31 01:58:34,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:58:34,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133254231] [2023-08-31 01:58:34,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:58:34,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:58:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:58:34,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:58:34,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:58:34,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133254231] [2023-08-31 01:58:34,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133254231] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:58:34,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:58:34,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 01:58:34,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239677136] [2023-08-31 01:58:34,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:58:34,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:58:34,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:58:34,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:58:34,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:58:34,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-31 01:58:34,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 327 transitions, 5812 flow. Second operand has 11 states, 11 states have (on average 120.27272727272727) internal successors, (1323), 11 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:34,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:58:34,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-31 01:58:34,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:58:37,016 INFO L130 PetriNetUnfolder]: 5448/10970 cut-off events. [2023-08-31 01:58:37,017 INFO L131 PetriNetUnfolder]: For 179775/180156 co-relation queries the response was YES. [2023-08-31 01:58:37,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67773 conditions, 10970 events. 5448/10970 cut-off events. For 179775/180156 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 87648 event pairs, 904 based on Foata normal form. 210/11126 useless extension candidates. Maximal degree in co-relation 67655. Up to 4024 conditions per place. [2023-08-31 01:58:37,127 INFO L137 encePairwiseOnDemand]: 241/255 looper letters, 298 selfloop transitions, 103 changer transitions 37/472 dead transitions. [2023-08-31 01:58:37,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 472 transitions, 8571 flow [2023-08-31 01:58:37,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 01:58:37,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 01:58:37,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1463 transitions. [2023-08-31 01:58:37,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215686274509804 [2023-08-31 01:58:37,129 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1463 transitions. [2023-08-31 01:58:37,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1463 transitions. [2023-08-31 01:58:37,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:58:37,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1463 transitions. [2023-08-31 01:58:37,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 133.0) internal successors, (1463), 11 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:37,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:37,133 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:37,133 INFO L175 Difference]: Start difference. First operand has 303 places, 327 transitions, 5812 flow. Second operand 11 states and 1463 transitions. [2023-08-31 01:58:37,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 472 transitions, 8571 flow [2023-08-31 01:58:38,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 472 transitions, 8360 flow, removed 45 selfloop flow, removed 11 redundant places. [2023-08-31 01:58:38,029 INFO L231 Difference]: Finished difference. Result has 304 places, 348 transitions, 6444 flow [2023-08-31 01:58:38,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=5631, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6444, PETRI_PLACES=304, PETRI_TRANSITIONS=348} [2023-08-31 01:58:38,030 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 245 predicate places. [2023-08-31 01:58:38,030 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 348 transitions, 6444 flow [2023-08-31 01:58:38,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 120.27272727272727) internal successors, (1323), 11 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:38,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:58:38,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:58:38,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-08-31 01:58:38,031 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:58:38,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:58:38,031 INFO L85 PathProgramCache]: Analyzing trace with hash -757939431, now seen corresponding path program 54 times [2023-08-31 01:58:38,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:58:38,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338498279] [2023-08-31 01:58:38,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:58:38,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:58:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:58:38,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:58:38,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:58:38,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338498279] [2023-08-31 01:58:38,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338498279] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:58:38,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:58:38,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:58:38,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183310733] [2023-08-31 01:58:38,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:58:38,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:58:38,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:58:38,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:58:38,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-31 01:58:38,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-08-31 01:58:38,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 348 transitions, 6444 flow. Second operand has 8 states, 8 states have (on average 122.375) internal successors, (979), 8 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:38,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:58:38,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-08-31 01:58:38,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:58:40,591 INFO L130 PetriNetUnfolder]: 5296/10649 cut-off events. [2023-08-31 01:58:40,591 INFO L131 PetriNetUnfolder]: For 192893/193453 co-relation queries the response was YES. [2023-08-31 01:58:40,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66803 conditions, 10649 events. 5296/10649 cut-off events. For 192893/193453 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 84872 event pairs, 2233 based on Foata normal form. 108/10626 useless extension candidates. Maximal degree in co-relation 66685. Up to 8281 conditions per place. [2023-08-31 01:58:40,704 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 279 selfloop transitions, 29 changer transitions 34/391 dead transitions. [2023-08-31 01:58:40,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 391 transitions, 7589 flow [2023-08-31 01:58:40,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:58:40,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:58:40,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1036 transitions. [2023-08-31 01:58:40,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078431372549019 [2023-08-31 01:58:40,705 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1036 transitions. [2023-08-31 01:58:40,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1036 transitions. [2023-08-31 01:58:40,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:58:40,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1036 transitions. [2023-08-31 01:58:40,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.5) internal successors, (1036), 8 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:40,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:40,709 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:40,709 INFO L175 Difference]: Start difference. First operand has 304 places, 348 transitions, 6444 flow. Second operand 8 states and 1036 transitions. [2023-08-31 01:58:40,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 391 transitions, 7589 flow [2023-08-31 01:58:41,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 391 transitions, 7333 flow, removed 96 selfloop flow, removed 6 redundant places. [2023-08-31 01:58:41,839 INFO L231 Difference]: Finished difference. Result has 308 places, 336 transitions, 6056 flow [2023-08-31 01:58:41,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=6204, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6056, PETRI_PLACES=308, PETRI_TRANSITIONS=336} [2023-08-31 01:58:41,840 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 249 predicate places. [2023-08-31 01:58:41,840 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 336 transitions, 6056 flow [2023-08-31 01:58:41,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 122.375) internal successors, (979), 8 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:41,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:58:41,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:58:41,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-08-31 01:58:41,841 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:58:41,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:58:41,841 INFO L85 PathProgramCache]: Analyzing trace with hash -352652421, now seen corresponding path program 55 times [2023-08-31 01:58:41,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:58:41,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16962312] [2023-08-31 01:58:41,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:58:41,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:58:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:58:42,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:58:42,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:58:42,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16962312] [2023-08-31 01:58:42,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16962312] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:58:42,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:58:42,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-31 01:58:42,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684608443] [2023-08-31 01:58:42,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:58:42,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:58:42,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:58:42,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:58:42,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:58:42,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-08-31 01:58:42,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 336 transitions, 6056 flow. Second operand has 7 states, 7 states have (on average 123.0) internal successors, (861), 7 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:42,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:58:42,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-08-31 01:58:42,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:58:44,359 INFO L130 PetriNetUnfolder]: 5037/10312 cut-off events. [2023-08-31 01:58:44,359 INFO L131 PetriNetUnfolder]: For 172762/173214 co-relation queries the response was YES. [2023-08-31 01:58:44,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62280 conditions, 10312 events. 5037/10312 cut-off events. For 172762/173214 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 83601 event pairs, 2133 based on Foata normal form. 170/10306 useless extension candidates. Maximal degree in co-relation 62161. Up to 7826 conditions per place. [2023-08-31 01:58:44,568 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 269 selfloop transitions, 21 changer transitions 26/377 dead transitions. [2023-08-31 01:58:44,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 377 transitions, 7050 flow [2023-08-31 01:58:44,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:58:44,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:58:44,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1036 transitions. [2023-08-31 01:58:44,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078431372549019 [2023-08-31 01:58:44,571 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1036 transitions. [2023-08-31 01:58:44,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1036 transitions. [2023-08-31 01:58:44,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:58:44,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1036 transitions. [2023-08-31 01:58:44,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.5) internal successors, (1036), 8 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:44,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:44,573 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:44,574 INFO L175 Difference]: Start difference. First operand has 308 places, 336 transitions, 6056 flow. Second operand 8 states and 1036 transitions. [2023-08-31 01:58:44,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 377 transitions, 7050 flow [2023-08-31 01:58:45,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 377 transitions, 6983 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-08-31 01:58:45,570 INFO L231 Difference]: Finished difference. Result has 308 places, 332 transitions, 5965 flow [2023-08-31 01:58:45,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=5991, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5965, PETRI_PLACES=308, PETRI_TRANSITIONS=332} [2023-08-31 01:58:45,571 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 249 predicate places. [2023-08-31 01:58:45,571 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 332 transitions, 5965 flow [2023-08-31 01:58:45,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 123.0) internal successors, (861), 7 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:45,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:58:45,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:58:45,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-08-31 01:58:45,572 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:58:45,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:58:45,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1088376391, now seen corresponding path program 56 times [2023-08-31 01:58:45,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:58:45,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876417988] [2023-08-31 01:58:45,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:58:45,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:58:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:58:45,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:58:45,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:58:45,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876417988] [2023-08-31 01:58:45,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876417988] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:58:45,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:58:45,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:58:45,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731192797] [2023-08-31 01:58:45,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:58:45,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:58:45,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:58:45,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:58:45,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:58:46,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-31 01:58:46,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 332 transitions, 5965 flow. Second operand has 9 states, 9 states have (on average 121.0) internal successors, (1089), 9 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:46,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:58:46,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-31 01:58:46,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:58:48,033 INFO L130 PetriNetUnfolder]: 4952/10010 cut-off events. [2023-08-31 01:58:48,033 INFO L131 PetriNetUnfolder]: For 164098/164498 co-relation queries the response was YES. [2023-08-31 01:58:48,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60281 conditions, 10010 events. 4952/10010 cut-off events. For 164098/164498 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 79056 event pairs, 2065 based on Foata normal form. 136/10068 useless extension candidates. Maximal degree in co-relation 60163. Up to 7545 conditions per place. [2023-08-31 01:58:48,370 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 279 selfloop transitions, 31 changer transitions 21/371 dead transitions. [2023-08-31 01:58:48,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 371 transitions, 6961 flow [2023-08-31 01:58:48,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:58:48,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:58:48,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1153 transitions. [2023-08-31 01:58:48,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50239651416122 [2023-08-31 01:58:48,372 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1153 transitions. [2023-08-31 01:58:48,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1153 transitions. [2023-08-31 01:58:48,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:58:48,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1153 transitions. [2023-08-31 01:58:48,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.11111111111111) internal successors, (1153), 9 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:48,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:48,375 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:48,375 INFO L175 Difference]: Start difference. First operand has 308 places, 332 transitions, 5965 flow. Second operand 9 states and 1153 transitions. [2023-08-31 01:58:48,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 371 transitions, 6961 flow [2023-08-31 01:58:49,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 371 transitions, 6900 flow, removed 8 selfloop flow, removed 8 redundant places. [2023-08-31 01:58:49,075 INFO L231 Difference]: Finished difference. Result has 308 places, 326 transitions, 5870 flow [2023-08-31 01:58:49,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=5836, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5870, PETRI_PLACES=308, PETRI_TRANSITIONS=326} [2023-08-31 01:58:49,076 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 249 predicate places. [2023-08-31 01:58:49,076 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 326 transitions, 5870 flow [2023-08-31 01:58:49,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 121.0) internal successors, (1089), 9 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:49,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:58:49,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:58:49,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-08-31 01:58:49,077 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:58:49,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:58:49,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1636349103, now seen corresponding path program 57 times [2023-08-31 01:58:49,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:58:49,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106802674] [2023-08-31 01:58:49,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:58:49,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:58:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:58:49,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:58:49,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:58:49,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106802674] [2023-08-31 01:58:49,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106802674] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:58:49,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:58:49,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:58:49,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289412414] [2023-08-31 01:58:49,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:58:49,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:58:49,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:58:49,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:58:49,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:58:49,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-31 01:58:49,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 326 transitions, 5870 flow. Second operand has 9 states, 9 states have (on average 121.0) internal successors, (1089), 9 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:49,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:58:49,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-31 01:58:49,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:58:51,269 INFO L130 PetriNetUnfolder]: 4554/9493 cut-off events. [2023-08-31 01:58:51,269 INFO L131 PetriNetUnfolder]: For 158438/158832 co-relation queries the response was YES. [2023-08-31 01:58:51,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57628 conditions, 9493 events. 4554/9493 cut-off events. For 158438/158832 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 76227 event pairs, 2024 based on Foata normal form. 118/9466 useless extension candidates. Maximal degree in co-relation 57511. Up to 7373 conditions per place. [2023-08-31 01:58:51,383 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 273 selfloop transitions, 22 changer transitions 19/360 dead transitions. [2023-08-31 01:58:51,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 360 transitions, 6787 flow [2023-08-31 01:58:51,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:58:51,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:58:51,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1021 transitions. [2023-08-31 01:58:51,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5004901960784314 [2023-08-31 01:58:51,384 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1021 transitions. [2023-08-31 01:58:51,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1021 transitions. [2023-08-31 01:58:51,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:58:51,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1021 transitions. [2023-08-31 01:58:51,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 127.625) internal successors, (1021), 8 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:51,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:51,386 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:51,386 INFO L175 Difference]: Start difference. First operand has 308 places, 326 transitions, 5870 flow. Second operand 8 states and 1021 transitions. [2023-08-31 01:58:51,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 360 transitions, 6787 flow [2023-08-31 01:58:52,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 360 transitions, 6671 flow, removed 25 selfloop flow, removed 9 redundant places. [2023-08-31 01:58:52,312 INFO L231 Difference]: Finished difference. Result has 306 places, 324 transitions, 5767 flow [2023-08-31 01:58:52,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=5754, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5767, PETRI_PLACES=306, PETRI_TRANSITIONS=324} [2023-08-31 01:58:52,312 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 247 predicate places. [2023-08-31 01:58:52,312 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 324 transitions, 5767 flow [2023-08-31 01:58:52,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 121.0) internal successors, (1089), 9 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:52,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:58:52,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:58:52,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-08-31 01:58:52,313 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:58:52,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:58:52,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1709936255, now seen corresponding path program 58 times [2023-08-31 01:58:52,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:58:52,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271563473] [2023-08-31 01:58:52,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:58:52,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:58:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:58:52,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:58:52,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:58:52,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271563473] [2023-08-31 01:58:52,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271563473] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:58:52,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:58:52,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:58:52,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717071970] [2023-08-31 01:58:52,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:58:52,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:58:52,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:58:52,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:58:52,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:58:52,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-08-31 01:58:52,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 324 transitions, 5767 flow. Second operand has 9 states, 9 states have (on average 121.88888888888889) internal successors, (1097), 9 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:52,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:58:52,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-08-31 01:58:52,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:58:54,560 INFO L130 PetriNetUnfolder]: 4397/9138 cut-off events. [2023-08-31 01:58:54,560 INFO L131 PetriNetUnfolder]: For 155653/156071 co-relation queries the response was YES. [2023-08-31 01:58:54,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55765 conditions, 9138 events. 4397/9138 cut-off events. For 155653/156071 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 72918 event pairs, 1995 based on Foata normal form. 136/9108 useless extension candidates. Maximal degree in co-relation 55649. Up to 7134 conditions per place. [2023-08-31 01:58:54,655 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 254 selfloop transitions, 22 changer transitions 17/354 dead transitions. [2023-08-31 01:58:54,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 354 transitions, 6591 flow [2023-08-31 01:58:54,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:58:54,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:58:54,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1025 transitions. [2023-08-31 01:58:54,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5024509803921569 [2023-08-31 01:58:54,657 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1025 transitions. [2023-08-31 01:58:54,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1025 transitions. [2023-08-31 01:58:54,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:58:54,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1025 transitions. [2023-08-31 01:58:54,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.125) internal successors, (1025), 8 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:54,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:54,660 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:54,660 INFO L175 Difference]: Start difference. First operand has 306 places, 324 transitions, 5767 flow. Second operand 8 states and 1025 transitions. [2023-08-31 01:58:54,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 354 transitions, 6591 flow [2023-08-31 01:58:55,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 354 transitions, 6511 flow, removed 21 selfloop flow, removed 8 redundant places. [2023-08-31 01:58:55,313 INFO L231 Difference]: Finished difference. Result has 304 places, 320 transitions, 5691 flow [2023-08-31 01:58:55,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=5693, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5691, PETRI_PLACES=304, PETRI_TRANSITIONS=320} [2023-08-31 01:58:55,313 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 245 predicate places. [2023-08-31 01:58:55,313 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 320 transitions, 5691 flow [2023-08-31 01:58:55,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 121.88888888888889) internal successors, (1097), 9 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:55,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:58:55,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:58:55,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-08-31 01:58:55,314 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:58:55,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:58:55,314 INFO L85 PathProgramCache]: Analyzing trace with hash 47658505, now seen corresponding path program 59 times [2023-08-31 01:58:55,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:58:55,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337402457] [2023-08-31 01:58:55,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:58:55,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:58:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:58:55,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:58:55,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:58:55,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337402457] [2023-08-31 01:58:55,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337402457] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:58:55,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:58:55,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:58:55,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546336652] [2023-08-31 01:58:55,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:58:55,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:58:55,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:58:55,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:58:55,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:58:55,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-08-31 01:58:55,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 320 transitions, 5691 flow. Second operand has 9 states, 9 states have (on average 121.88888888888889) internal successors, (1097), 9 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:55,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:58:55,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-08-31 01:58:55,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:58:57,432 INFO L130 PetriNetUnfolder]: 4370/9059 cut-off events. [2023-08-31 01:58:57,432 INFO L131 PetriNetUnfolder]: For 150549/150967 co-relation queries the response was YES. [2023-08-31 01:58:57,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54777 conditions, 9059 events. 4370/9059 cut-off events. For 150549/150967 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 72013 event pairs, 2015 based on Foata normal form. 136/9029 useless extension candidates. Maximal degree in co-relation 54663. Up to 7013 conditions per place. [2023-08-31 01:58:57,524 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 247 selfloop transitions, 29 changer transitions 14/351 dead transitions. [2023-08-31 01:58:57,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 351 transitions, 6525 flow [2023-08-31 01:58:57,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:58:57,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:58:57,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1028 transitions. [2023-08-31 01:58:57,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503921568627451 [2023-08-31 01:58:57,525 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1028 transitions. [2023-08-31 01:58:57,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1028 transitions. [2023-08-31 01:58:57,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:58:57,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1028 transitions. [2023-08-31 01:58:57,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.5) internal successors, (1028), 8 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:57,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:57,527 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:57,527 INFO L175 Difference]: Start difference. First operand has 304 places, 320 transitions, 5691 flow. Second operand 8 states and 1028 transitions. [2023-08-31 01:58:57,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 351 transitions, 6525 flow [2023-08-31 01:58:58,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 351 transitions, 6473 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-31 01:58:58,173 INFO L231 Difference]: Finished difference. Result has 304 places, 314 transitions, 5592 flow [2023-08-31 01:58:58,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=5639, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5592, PETRI_PLACES=304, PETRI_TRANSITIONS=314} [2023-08-31 01:58:58,173 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 245 predicate places. [2023-08-31 01:58:58,173 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 314 transitions, 5592 flow [2023-08-31 01:58:58,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 121.88888888888889) internal successors, (1097), 9 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:58,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:58:58,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:58:58,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-08-31 01:58:58,174 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:58:58,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:58:58,174 INFO L85 PathProgramCache]: Analyzing trace with hash -762981023, now seen corresponding path program 60 times [2023-08-31 01:58:58,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:58:58,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061353513] [2023-08-31 01:58:58,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:58:58,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:58:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:58:58,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:58:58,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:58:58,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061353513] [2023-08-31 01:58:58,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061353513] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:58:58,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:58:58,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:58:58,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260272533] [2023-08-31 01:58:58,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:58:58,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:58:58,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:58:58,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:58:58,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:58:58,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-31 01:58:58,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 314 transitions, 5592 flow. Second operand has 9 states, 9 states have (on average 121.0) internal successors, (1089), 9 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:58:58,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:58:58,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-31 01:58:58,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:00,637 INFO L130 PetriNetUnfolder]: 4336/8963 cut-off events. [2023-08-31 01:59:00,638 INFO L131 PetriNetUnfolder]: For 147784/148164 co-relation queries the response was YES. [2023-08-31 01:59:00,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54394 conditions, 8963 events. 4336/8963 cut-off events. For 147784/148164 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 70734 event pairs, 1966 based on Foata normal form. 112/8932 useless extension candidates. Maximal degree in co-relation 54279. Up to 7022 conditions per place. [2023-08-31 01:59:00,729 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 261 selfloop transitions, 20 changer transitions 17/344 dead transitions. [2023-08-31 01:59:00,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 344 transitions, 6415 flow [2023-08-31 01:59:00,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:59:00,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:59:00,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1021 transitions. [2023-08-31 01:59:00,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5004901960784314 [2023-08-31 01:59:00,731 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1021 transitions. [2023-08-31 01:59:00,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1021 transitions. [2023-08-31 01:59:00,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:00,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1021 transitions. [2023-08-31 01:59:00,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 127.625) internal successors, (1021), 8 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:00,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:00,733 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:00,733 INFO L175 Difference]: Start difference. First operand has 304 places, 314 transitions, 5592 flow. Second operand 8 states and 1021 transitions. [2023-08-31 01:59:00,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 344 transitions, 6415 flow [2023-08-31 01:59:01,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 344 transitions, 6293 flow, removed 11 selfloop flow, removed 11 redundant places. [2023-08-31 01:59:01,362 INFO L231 Difference]: Finished difference. Result has 301 places, 305 transitions, 5357 flow [2023-08-31 01:59:01,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=5416, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5357, PETRI_PLACES=301, PETRI_TRANSITIONS=305} [2023-08-31 01:59:01,362 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 242 predicate places. [2023-08-31 01:59:01,363 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 305 transitions, 5357 flow [2023-08-31 01:59:01,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 121.0) internal successors, (1089), 9 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:01,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:01,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:01,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-08-31 01:59:01,363 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:01,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:01,364 INFO L85 PathProgramCache]: Analyzing trace with hash 200999169, now seen corresponding path program 61 times [2023-08-31 01:59:01,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:01,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572787386] [2023-08-31 01:59:01,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:01,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:01,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:01,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:01,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572787386] [2023-08-31 01:59:01,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572787386] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:01,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:01,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:59:01,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696186685] [2023-08-31 01:59:01,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:01,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:59:01,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:01,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:59:01,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:59:01,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-08-31 01:59:01,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 305 transitions, 5357 flow. Second operand has 10 states, 10 states have (on average 121.6) internal successors, (1216), 10 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:01,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:01,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-08-31 01:59:01,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:03,411 INFO L130 PetriNetUnfolder]: 4102/8379 cut-off events. [2023-08-31 01:59:03,412 INFO L131 PetriNetUnfolder]: For 135007/135371 co-relation queries the response was YES. [2023-08-31 01:59:03,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50229 conditions, 8379 events. 4102/8379 cut-off events. For 135007/135371 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 64521 event pairs, 1895 based on Foata normal form. 124/8384 useless extension candidates. Maximal degree in co-relation 50117. Up to 6183 conditions per place. [2023-08-31 01:59:03,520 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 232 selfloop transitions, 25 changer transitions 36/342 dead transitions. [2023-08-31 01:59:03,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 342 transitions, 6267 flow [2023-08-31 01:59:03,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:59:03,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:59:03,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1156 transitions. [2023-08-31 01:59:03,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037037037037037 [2023-08-31 01:59:03,521 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1156 transitions. [2023-08-31 01:59:03,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1156 transitions. [2023-08-31 01:59:03,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:03,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1156 transitions. [2023-08-31 01:59:03,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.44444444444446) internal successors, (1156), 9 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:03,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:03,523 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:03,523 INFO L175 Difference]: Start difference. First operand has 301 places, 305 transitions, 5357 flow. Second operand 9 states and 1156 transitions. [2023-08-31 01:59:03,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 342 transitions, 6267 flow [2023-08-31 01:59:04,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 342 transitions, 6177 flow, removed 19 selfloop flow, removed 7 redundant places. [2023-08-31 01:59:04,275 INFO L231 Difference]: Finished difference. Result has 302 places, 285 transitions, 4971 flow [2023-08-31 01:59:04,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=5172, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4971, PETRI_PLACES=302, PETRI_TRANSITIONS=285} [2023-08-31 01:59:04,276 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 243 predicate places. [2023-08-31 01:59:04,276 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 285 transitions, 4971 flow [2023-08-31 01:59:04,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 121.6) internal successors, (1216), 10 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:04,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:04,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:04,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-08-31 01:59:04,277 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:04,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:04,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1802658153, now seen corresponding path program 62 times [2023-08-31 01:59:04,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:04,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406300886] [2023-08-31 01:59:04,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:04,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:04,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:04,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:04,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:04,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406300886] [2023-08-31 01:59:04,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406300886] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:04,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:04,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:59:04,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151510311] [2023-08-31 01:59:04,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:04,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:59:04,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:04,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:59:04,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:59:04,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-31 01:59:04,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 285 transitions, 4971 flow. Second operand has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:59:04,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:04,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-31 01:59:04,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:06,213 INFO L130 PetriNetUnfolder]: 3915/7938 cut-off events. [2023-08-31 01:59:06,213 INFO L131 PetriNetUnfolder]: For 121237/121563 co-relation queries the response was YES. [2023-08-31 01:59:06,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47276 conditions, 7938 events. 3915/7938 cut-off events. For 121237/121563 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 59497 event pairs, 1840 based on Foata normal form. 44/7895 useless extension candidates. Maximal degree in co-relation 47163. Up to 6340 conditions per place. [2023-08-31 01:59:06,297 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 254 selfloop transitions, 15 changer transitions 27/321 dead transitions. [2023-08-31 01:59:06,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 321 transitions, 5853 flow [2023-08-31 01:59:06,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:59:06,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:59:06,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1136 transitions. [2023-08-31 01:59:06,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49498910675381264 [2023-08-31 01:59:06,298 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1136 transitions. [2023-08-31 01:59:06,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1136 transitions. [2023-08-31 01:59:06,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:06,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1136 transitions. [2023-08-31 01:59:06,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.22222222222223) internal successors, (1136), 9 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:06,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:06,300 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:06,300 INFO L175 Difference]: Start difference. First operand has 302 places, 285 transitions, 4971 flow. Second operand 9 states and 1136 transitions. [2023-08-31 01:59:06,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 321 transitions, 5853 flow [2023-08-31 01:59:06,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 321 transitions, 5680 flow, removed 27 selfloop flow, removed 17 redundant places. [2023-08-31 01:59:06,793 INFO L231 Difference]: Finished difference. Result has 293 places, 273 transitions, 4638 flow [2023-08-31 01:59:06,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=4807, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4638, PETRI_PLACES=293, PETRI_TRANSITIONS=273} [2023-08-31 01:59:06,794 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 234 predicate places. [2023-08-31 01:59:06,794 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 273 transitions, 4638 flow [2023-08-31 01:59:06,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:59:06,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:06,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:06,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-08-31 01:59:06,794 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:06,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:06,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1425807513, now seen corresponding path program 63 times [2023-08-31 01:59:06,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:06,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720921159] [2023-08-31 01:59:06,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:06,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:06,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:07,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:07,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:07,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720921159] [2023-08-31 01:59:07,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720921159] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:07,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:07,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:59:07,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41573491] [2023-08-31 01:59:07,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:07,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:59:07,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:07,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:59:07,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:59:07,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-31 01:59:07,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 273 transitions, 4638 flow. Second operand has 9 states, 9 states have (on average 120.11111111111111) internal successors, (1081), 9 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:07,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:07,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-31 01:59:07,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:08,606 INFO L130 PetriNetUnfolder]: 3801/7724 cut-off events. [2023-08-31 01:59:08,606 INFO L131 PetriNetUnfolder]: For 112320/112644 co-relation queries the response was YES. [2023-08-31 01:59:08,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45162 conditions, 7724 events. 3801/7724 cut-off events. For 112320/112644 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 57742 event pairs, 1871 based on Foata normal form. 44/7681 useless extension candidates. Maximal degree in co-relation 45055. Up to 6212 conditions per place. [2023-08-31 01:59:08,691 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 249 selfloop transitions, 21 changer transitions 10/305 dead transitions. [2023-08-31 01:59:08,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 305 transitions, 5503 flow [2023-08-31 01:59:08,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:59:08,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:59:08,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1131 transitions. [2023-08-31 01:59:08,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928104575163399 [2023-08-31 01:59:08,692 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1131 transitions. [2023-08-31 01:59:08,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1131 transitions. [2023-08-31 01:59:08,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:08,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1131 transitions. [2023-08-31 01:59:08,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 125.66666666666667) internal successors, (1131), 9 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:08,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:08,697 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:08,698 INFO L175 Difference]: Start difference. First operand has 293 places, 273 transitions, 4638 flow. Second operand 9 states and 1131 transitions. [2023-08-31 01:59:08,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 305 transitions, 5503 flow [2023-08-31 01:59:09,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 305 transitions, 5440 flow, removed 13 selfloop flow, removed 12 redundant places. [2023-08-31 01:59:09,328 INFO L231 Difference]: Finished difference. Result has 286 places, 274 transitions, 4666 flow [2023-08-31 01:59:09,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=4583, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4666, PETRI_PLACES=286, PETRI_TRANSITIONS=274} [2023-08-31 01:59:09,328 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 227 predicate places. [2023-08-31 01:59:09,329 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 274 transitions, 4666 flow [2023-08-31 01:59:09,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 120.11111111111111) internal successors, (1081), 9 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:09,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:09,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:09,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-08-31 01:59:09,329 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:09,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:09,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1709285973, now seen corresponding path program 64 times [2023-08-31 01:59:09,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:09,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767242107] [2023-08-31 01:59:09,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:09,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:09,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:09,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:09,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767242107] [2023-08-31 01:59:09,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767242107] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:09,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:09,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:59:09,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438969807] [2023-08-31 01:59:09,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:09,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:59:09,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:09,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:59:09,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:59:09,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-31 01:59:09,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 274 transitions, 4666 flow. Second operand has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:59:09,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:09,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-31 01:59:09,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:11,189 INFO L130 PetriNetUnfolder]: 3793/7712 cut-off events. [2023-08-31 01:59:11,189 INFO L131 PetriNetUnfolder]: For 111333/111657 co-relation queries the response was YES. [2023-08-31 01:59:11,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44710 conditions, 7712 events. 3793/7712 cut-off events. For 111333/111657 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 57667 event pairs, 1859 based on Foata normal form. 44/7669 useless extension candidates. Maximal degree in co-relation 44605. Up to 6203 conditions per place. [2023-08-31 01:59:11,268 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 242 selfloop transitions, 16 changer transitions 22/305 dead transitions. [2023-08-31 01:59:11,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 305 transitions, 5466 flow [2023-08-31 01:59:11,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:59:11,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:59:11,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1130 transitions. [2023-08-31 01:59:11,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4923747276688453 [2023-08-31 01:59:11,274 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1130 transitions. [2023-08-31 01:59:11,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1130 transitions. [2023-08-31 01:59:11,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:11,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1130 transitions. [2023-08-31 01:59:11,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 125.55555555555556) internal successors, (1130), 9 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:11,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:11,277 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:11,277 INFO L175 Difference]: Start difference. First operand has 286 places, 274 transitions, 4666 flow. Second operand 9 states and 1130 transitions. [2023-08-31 01:59:11,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 305 transitions, 5466 flow [2023-08-31 01:59:11,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 305 transitions, 5379 flow, removed 23 selfloop flow, removed 6 redundant places. [2023-08-31 01:59:11,747 INFO L231 Difference]: Finished difference. Result has 288 places, 267 transitions, 4468 flow [2023-08-31 01:59:11,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=4579, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4468, PETRI_PLACES=288, PETRI_TRANSITIONS=267} [2023-08-31 01:59:11,747 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 229 predicate places. [2023-08-31 01:59:11,748 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 267 transitions, 4468 flow [2023-08-31 01:59:11,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:59:11,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:11,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:11,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-08-31 01:59:11,749 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:11,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:11,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1127247093, now seen corresponding path program 65 times [2023-08-31 01:59:11,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:11,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265990645] [2023-08-31 01:59:11,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:11,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:12,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:12,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:12,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265990645] [2023-08-31 01:59:12,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265990645] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:12,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:12,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:59:12,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825985281] [2023-08-31 01:59:12,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:12,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:59:12,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:12,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:59:12,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:59:12,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-31 01:59:12,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 267 transitions, 4468 flow. Second operand has 9 states, 9 states have (on average 121.0) internal successors, (1089), 9 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:12,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:12,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-31 01:59:12,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:13,426 INFO L130 PetriNetUnfolder]: 3547/7404 cut-off events. [2023-08-31 01:59:13,426 INFO L131 PetriNetUnfolder]: For 113387/113735 co-relation queries the response was YES. [2023-08-31 01:59:13,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43075 conditions, 7404 events. 3547/7404 cut-off events. For 113387/113735 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 56501 event pairs, 1786 based on Foata normal form. 102/7375 useless extension candidates. Maximal degree in co-relation 42970. Up to 5776 conditions per place. [2023-08-31 01:59:13,503 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 210 selfloop transitions, 11 changer transitions 31/294 dead transitions. [2023-08-31 01:59:13,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 294 transitions, 5131 flow [2023-08-31 01:59:13,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:59:13,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:59:13,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1014 transitions. [2023-08-31 01:59:13,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4970588235294118 [2023-08-31 01:59:13,504 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1014 transitions. [2023-08-31 01:59:13,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1014 transitions. [2023-08-31 01:59:13,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:13,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1014 transitions. [2023-08-31 01:59:13,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 126.75) internal successors, (1014), 8 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:13,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:13,507 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:13,507 INFO L175 Difference]: Start difference. First operand has 288 places, 267 transitions, 4468 flow. Second operand 8 states and 1014 transitions. [2023-08-31 01:59:13,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 294 transitions, 5131 flow [2023-08-31 01:59:14,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 294 transitions, 5077 flow, removed 11 selfloop flow, removed 8 redundant places. [2023-08-31 01:59:14,078 INFO L231 Difference]: Finished difference. Result has 282 places, 254 transitions, 4201 flow [2023-08-31 01:59:14,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=4418, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4201, PETRI_PLACES=282, PETRI_TRANSITIONS=254} [2023-08-31 01:59:14,078 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 223 predicate places. [2023-08-31 01:59:14,078 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 254 transitions, 4201 flow [2023-08-31 01:59:14,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 121.0) internal successors, (1089), 9 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:14,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:14,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:14,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-08-31 01:59:14,079 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:14,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:14,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1762081559, now seen corresponding path program 66 times [2023-08-31 01:59:14,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:14,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493332338] [2023-08-31 01:59:14,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:14,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:14,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:14,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:14,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493332338] [2023-08-31 01:59:14,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493332338] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:14,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:14,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:59:14,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812014083] [2023-08-31 01:59:14,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:14,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:59:14,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:14,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:59:14,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-31 01:59:14,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 255 [2023-08-31 01:59:14,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 254 transitions, 4201 flow. Second operand has 8 states, 8 states have (on average 123.25) internal successors, (986), 8 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:14,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:14,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 255 [2023-08-31 01:59:14,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:15,782 INFO L130 PetriNetUnfolder]: 3439/7129 cut-off events. [2023-08-31 01:59:15,782 INFO L131 PetriNetUnfolder]: For 99911/100235 co-relation queries the response was YES. [2023-08-31 01:59:15,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40363 conditions, 7129 events. 3439/7129 cut-off events. For 99911/100235 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 53563 event pairs, 1766 based on Foata normal form. 48/7102 useless extension candidates. Maximal degree in co-relation 40260. Up to 5679 conditions per place. [2023-08-31 01:59:15,846 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 187 selfloop transitions, 12 changer transitions 20/274 dead transitions. [2023-08-31 01:59:15,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 274 transitions, 4750 flow [2023-08-31 01:59:15,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:59:15,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:59:15,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1021 transitions. [2023-08-31 01:59:15,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5004901960784314 [2023-08-31 01:59:15,848 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1021 transitions. [2023-08-31 01:59:15,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1021 transitions. [2023-08-31 01:59:15,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:15,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1021 transitions. [2023-08-31 01:59:15,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 127.625) internal successors, (1021), 8 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:15,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:15,850 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:15,850 INFO L175 Difference]: Start difference. First operand has 282 places, 254 transitions, 4201 flow. Second operand 8 states and 1021 transitions. [2023-08-31 01:59:15,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 274 transitions, 4750 flow [2023-08-31 01:59:16,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 274 transitions, 4657 flow, removed 16 selfloop flow, removed 12 redundant places. [2023-08-31 01:59:16,222 INFO L231 Difference]: Finished difference. Result has 269 places, 243 transitions, 3917 flow [2023-08-31 01:59:16,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=4071, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3917, PETRI_PLACES=269, PETRI_TRANSITIONS=243} [2023-08-31 01:59:16,223 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 210 predicate places. [2023-08-31 01:59:16,223 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 243 transitions, 3917 flow [2023-08-31 01:59:16,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 123.25) internal successors, (986), 8 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:16,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:16,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:16,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-08-31 01:59:16,223 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:16,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:16,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1729397019, now seen corresponding path program 67 times [2023-08-31 01:59:16,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:16,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736855386] [2023-08-31 01:59:16,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:16,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:16,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:16,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:16,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736855386] [2023-08-31 01:59:16,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736855386] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:16,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:16,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 01:59:16,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785019499] [2023-08-31 01:59:16,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:16,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:59:16,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:16,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:59:16,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:59:16,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-31 01:59:16,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 243 transitions, 3917 flow. Second operand has 11 states, 11 states have (on average 120.27272727272727) internal successors, (1323), 11 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:16,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:16,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-31 01:59:16,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:17,824 INFO L130 PetriNetUnfolder]: 3463/7090 cut-off events. [2023-08-31 01:59:17,825 INFO L131 PetriNetUnfolder]: For 91827/92104 co-relation queries the response was YES. [2023-08-31 01:59:17,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39457 conditions, 7090 events. 3463/7090 cut-off events. For 91827/92104 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 52525 event pairs, 1752 based on Foata normal form. 28/7074 useless extension candidates. Maximal degree in co-relation 39360. Up to 5787 conditions per place. [2023-08-31 01:59:17,900 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 211 selfloop transitions, 6 changer transitions 29/277 dead transitions. [2023-08-31 01:59:17,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 277 transitions, 4637 flow [2023-08-31 01:59:17,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:59:17,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:59:17,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1134 transitions. [2023-08-31 01:59:17,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49411764705882355 [2023-08-31 01:59:17,901 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1134 transitions. [2023-08-31 01:59:17,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1134 transitions. [2023-08-31 01:59:17,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:17,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1134 transitions. [2023-08-31 01:59:17,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.0) internal successors, (1134), 9 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:17,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:17,903 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:17,903 INFO L175 Difference]: Start difference. First operand has 269 places, 243 transitions, 3917 flow. Second operand 9 states and 1134 transitions. [2023-08-31 01:59:17,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 277 transitions, 4637 flow [2023-08-31 01:59:18,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 277 transitions, 4577 flow, removed 16 selfloop flow, removed 7 redundant places. [2023-08-31 01:59:18,282 INFO L231 Difference]: Finished difference. Result has 267 places, 237 transitions, 3765 flow [2023-08-31 01:59:18,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=3839, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3765, PETRI_PLACES=267, PETRI_TRANSITIONS=237} [2023-08-31 01:59:18,283 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 208 predicate places. [2023-08-31 01:59:18,283 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 237 transitions, 3765 flow [2023-08-31 01:59:18,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 120.27272727272727) internal successors, (1323), 11 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:18,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:18,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:18,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-08-31 01:59:18,284 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:18,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:18,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1830566703, now seen corresponding path program 68 times [2023-08-31 01:59:18,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:18,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379101454] [2023-08-31 01:59:18,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:18,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:18,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:18,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:18,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379101454] [2023-08-31 01:59:18,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379101454] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:18,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:18,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:59:18,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240656250] [2023-08-31 01:59:18,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:18,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:59:18,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:18,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:59:18,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:59:18,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 255 [2023-08-31 01:59:18,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 237 transitions, 3765 flow. Second operand has 9 states, 9 states have (on average 122.88888888888889) internal successors, (1106), 9 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:18,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:18,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 255 [2023-08-31 01:59:18,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:19,731 INFO L130 PetriNetUnfolder]: 3143/6481 cut-off events. [2023-08-31 01:59:19,731 INFO L131 PetriNetUnfolder]: For 82185/82439 co-relation queries the response was YES. [2023-08-31 01:59:19,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36027 conditions, 6481 events. 3143/6481 cut-off events. For 82185/82439 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 47788 event pairs, 640 based on Foata normal form. 90/6512 useless extension candidates. Maximal degree in co-relation 35930. Up to 4882 conditions per place. [2023-08-31 01:59:19,794 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 154 selfloop transitions, 16 changer transitions 39/251 dead transitions. [2023-08-31 01:59:19,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 251 transitions, 4227 flow [2023-08-31 01:59:19,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:59:19,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:59:19,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 780 transitions. [2023-08-31 01:59:19,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2023-08-31 01:59:19,796 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 780 transitions. [2023-08-31 01:59:19,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 780 transitions. [2023-08-31 01:59:19,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:19,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 780 transitions. [2023-08-31 01:59:19,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:19,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:19,797 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:19,797 INFO L175 Difference]: Start difference. First operand has 267 places, 237 transitions, 3765 flow. Second operand 6 states and 780 transitions. [2023-08-31 01:59:19,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 251 transitions, 4227 flow [2023-08-31 01:59:20,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 251 transitions, 4034 flow, removed 27 selfloop flow, removed 16 redundant places. [2023-08-31 01:59:20,123 INFO L231 Difference]: Finished difference. Result has 248 places, 203 transitions, 3185 flow [2023-08-31 01:59:20,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=3487, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3185, PETRI_PLACES=248, PETRI_TRANSITIONS=203} [2023-08-31 01:59:20,124 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 189 predicate places. [2023-08-31 01:59:20,124 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 203 transitions, 3185 flow [2023-08-31 01:59:20,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 122.88888888888889) internal successors, (1106), 9 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:20,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:20,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:20,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-08-31 01:59:20,125 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:20,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:20,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1563865877, now seen corresponding path program 69 times [2023-08-31 01:59:20,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:20,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38118650] [2023-08-31 01:59:20,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:20,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:20,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:20,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:20,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38118650] [2023-08-31 01:59:20,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38118650] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:20,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:20,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:59:20,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189340779] [2023-08-31 01:59:20,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:20,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:59:20,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:20,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:59:20,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:59:20,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-31 01:59:20,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 203 transitions, 3185 flow. Second operand has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:59:20,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:20,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-31 01:59:20,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:21,511 INFO L130 PetriNetUnfolder]: 3271/6732 cut-off events. [2023-08-31 01:59:21,511 INFO L131 PetriNetUnfolder]: For 77984/78242 co-relation queries the response was YES. [2023-08-31 01:59:21,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36685 conditions, 6732 events. 3271/6732 cut-off events. For 77984/78242 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 50158 event pairs, 792 based on Foata normal form. 88/6779 useless extension candidates. Maximal degree in co-relation 36597. Up to 4918 conditions per place. [2023-08-31 01:59:21,575 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 177 selfloop transitions, 39 changer transitions 17/249 dead transitions. [2023-08-31 01:59:21,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 249 transitions, 4121 flow [2023-08-31 01:59:21,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:59:21,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:59:21,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1140 transitions. [2023-08-31 01:59:21,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49673202614379086 [2023-08-31 01:59:21,576 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1140 transitions. [2023-08-31 01:59:21,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1140 transitions. [2023-08-31 01:59:21,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:21,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1140 transitions. [2023-08-31 01:59:21,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.66666666666667) internal successors, (1140), 9 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:21,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:21,578 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:21,578 INFO L175 Difference]: Start difference. First operand has 248 places, 203 transitions, 3185 flow. Second operand 9 states and 1140 transitions. [2023-08-31 01:59:21,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 249 transitions, 4121 flow [2023-08-31 01:59:21,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 249 transitions, 3839 flow, removed 26 selfloop flow, removed 22 redundant places. [2023-08-31 01:59:21,961 INFO L231 Difference]: Finished difference. Result has 224 places, 204 transitions, 3042 flow [2023-08-31 01:59:21,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=2929, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3042, PETRI_PLACES=224, PETRI_TRANSITIONS=204} [2023-08-31 01:59:21,961 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 165 predicate places. [2023-08-31 01:59:21,961 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 204 transitions, 3042 flow [2023-08-31 01:59:21,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:59:21,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:21,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:21,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-08-31 01:59:21,962 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:21,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:21,962 INFO L85 PathProgramCache]: Analyzing trace with hash 758817963, now seen corresponding path program 70 times [2023-08-31 01:59:21,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:21,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710141230] [2023-08-31 01:59:21,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:21,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:22,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:22,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:22,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710141230] [2023-08-31 01:59:22,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710141230] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:22,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:22,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:59:22,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719624948] [2023-08-31 01:59:22,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:22,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:59:22,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:22,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:59:22,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:59:22,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 255 [2023-08-31 01:59:22,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 204 transitions, 3042 flow. Second operand has 10 states, 10 states have (on average 122.5) internal successors, (1225), 10 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:22,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:22,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 255 [2023-08-31 01:59:22,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:23,407 INFO L130 PetriNetUnfolder]: 3222/6516 cut-off events. [2023-08-31 01:59:23,407 INFO L131 PetriNetUnfolder]: For 67778/68052 co-relation queries the response was YES. [2023-08-31 01:59:23,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34316 conditions, 6516 events. 3222/6516 cut-off events. For 67778/68052 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 47860 event pairs, 1257 based on Foata normal form. 90/6546 useless extension candidates. Maximal degree in co-relation 34234. Up to 5036 conditions per place. [2023-08-31 01:59:23,449 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 152 selfloop transitions, 35 changer transitions 15/231 dead transitions. [2023-08-31 01:59:23,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 231 transitions, 3711 flow [2023-08-31 01:59:23,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:59:23,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:59:23,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1027 transitions. [2023-08-31 01:59:23,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034313725490196 [2023-08-31 01:59:23,450 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1027 transitions. [2023-08-31 01:59:23,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1027 transitions. [2023-08-31 01:59:23,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:23,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1027 transitions. [2023-08-31 01:59:23,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.375) internal successors, (1027), 8 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:23,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:23,452 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:23,452 INFO L175 Difference]: Start difference. First operand has 224 places, 204 transitions, 3042 flow. Second operand 8 states and 1027 transitions. [2023-08-31 01:59:23,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 231 transitions, 3711 flow [2023-08-31 01:59:23,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 231 transitions, 3588 flow, removed 18 selfloop flow, removed 7 redundant places. [2023-08-31 01:59:23,632 INFO L231 Difference]: Finished difference. Result has 225 places, 200 transitions, 2932 flow [2023-08-31 01:59:23,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=2919, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2932, PETRI_PLACES=225, PETRI_TRANSITIONS=200} [2023-08-31 01:59:23,633 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 166 predicate places. [2023-08-31 01:59:23,633 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 200 transitions, 2932 flow [2023-08-31 01:59:23,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.5) internal successors, (1225), 10 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:23,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:23,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:23,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-08-31 01:59:23,633 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:23,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:23,633 INFO L85 PathProgramCache]: Analyzing trace with hash -533418025, now seen corresponding path program 71 times [2023-08-31 01:59:23,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:23,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973304937] [2023-08-31 01:59:23,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:23,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:24,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:24,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:24,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973304937] [2023-08-31 01:59:24,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973304937] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:24,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:24,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:59:24,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879921716] [2023-08-31 01:59:24,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:24,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:59:24,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:24,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:59:24,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:59:24,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-31 01:59:24,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 200 transitions, 2932 flow. Second operand has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:59:24,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:24,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-31 01:59:24,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:25,029 INFO L130 PetriNetUnfolder]: 2624/5543 cut-off events. [2023-08-31 01:59:25,030 INFO L131 PetriNetUnfolder]: For 58313/58627 co-relation queries the response was YES. [2023-08-31 01:59:25,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30110 conditions, 5543 events. 2624/5543 cut-off events. For 58313/58627 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 40593 event pairs, 595 based on Foata normal form. 232/5752 useless extension candidates. Maximal degree in co-relation 30027. Up to 2639 conditions per place. [2023-08-31 01:59:25,064 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 146 selfloop transitions, 29 changer transitions 53/244 dead transitions. [2023-08-31 01:59:25,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 244 transitions, 3805 flow [2023-08-31 01:59:25,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:59:25,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:59:25,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1144 transitions. [2023-08-31 01:59:25,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984749455337691 [2023-08-31 01:59:25,066 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1144 transitions. [2023-08-31 01:59:25,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1144 transitions. [2023-08-31 01:59:25,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:25,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1144 transitions. [2023-08-31 01:59:25,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 127.11111111111111) internal successors, (1144), 9 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:25,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:25,068 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:25,068 INFO L175 Difference]: Start difference. First operand has 225 places, 200 transitions, 2932 flow. Second operand 9 states and 1144 transitions. [2023-08-31 01:59:25,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 244 transitions, 3805 flow [2023-08-31 01:59:25,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 244 transitions, 3714 flow, removed 11 selfloop flow, removed 7 redundant places. [2023-08-31 01:59:25,262 INFO L231 Difference]: Finished difference. Result has 227 places, 178 transitions, 2461 flow [2023-08-31 01:59:25,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=2803, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2461, PETRI_PLACES=227, PETRI_TRANSITIONS=178} [2023-08-31 01:59:25,262 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 168 predicate places. [2023-08-31 01:59:25,262 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 178 transitions, 2461 flow [2023-08-31 01:59:25,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:59:25,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:25,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:25,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-08-31 01:59:25,263 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:25,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:25,264 INFO L85 PathProgramCache]: Analyzing trace with hash 823562525, now seen corresponding path program 72 times [2023-08-31 01:59:25,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:25,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881334830] [2023-08-31 01:59:25,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:25,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:25,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:25,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:25,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881334830] [2023-08-31 01:59:25,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881334830] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:25,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:25,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 01:59:25,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553061147] [2023-08-31 01:59:25,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:25,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:59:25,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:25,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:59:25,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:59:25,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-08-31 01:59:25,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 178 transitions, 2461 flow. Second operand has 11 states, 11 states have (on average 121.27272727272727) internal successors, (1334), 11 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:25,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:25,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-08-31 01:59:25,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:26,260 INFO L130 PetriNetUnfolder]: 1508/3549 cut-off events. [2023-08-31 01:59:26,260 INFO L131 PetriNetUnfolder]: For 34291/34507 co-relation queries the response was YES. [2023-08-31 01:59:26,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18055 conditions, 3549 events. 1508/3549 cut-off events. For 34291/34507 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 25540 event pairs, 539 based on Foata normal form. 80/3597 useless extension candidates. Maximal degree in co-relation 17971. Up to 2407 conditions per place. [2023-08-31 01:59:26,288 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 128 selfloop transitions, 34 changer transitions 13/203 dead transitions. [2023-08-31 01:59:26,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 203 transitions, 3035 flow [2023-08-31 01:59:26,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:59:26,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:59:26,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1139 transitions. [2023-08-31 01:59:26,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962962962962963 [2023-08-31 01:59:26,290 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1139 transitions. [2023-08-31 01:59:26,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1139 transitions. [2023-08-31 01:59:26,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:26,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1139 transitions. [2023-08-31 01:59:26,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.55555555555556) internal successors, (1139), 9 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:26,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:26,292 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:26,292 INFO L175 Difference]: Start difference. First operand has 227 places, 178 transitions, 2461 flow. Second operand 9 states and 1139 transitions. [2023-08-31 01:59:26,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 203 transitions, 3035 flow [2023-08-31 01:59:26,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 203 transitions, 2943 flow, removed 17 selfloop flow, removed 10 redundant places. [2023-08-31 01:59:26,392 INFO L231 Difference]: Finished difference. Result has 218 places, 175 transitions, 2416 flow [2023-08-31 01:59:26,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=2379, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2416, PETRI_PLACES=218, PETRI_TRANSITIONS=175} [2023-08-31 01:59:26,392 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 159 predicate places. [2023-08-31 01:59:26,393 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 175 transitions, 2416 flow [2023-08-31 01:59:26,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 121.27272727272727) internal successors, (1334), 11 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:26,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:26,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:26,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-08-31 01:59:26,393 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:26,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:26,393 INFO L85 PathProgramCache]: Analyzing trace with hash -747380543, now seen corresponding path program 73 times [2023-08-31 01:59:26,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:26,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394679409] [2023-08-31 01:59:26,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:26,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:26,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:26,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:26,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394679409] [2023-08-31 01:59:26,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394679409] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:26,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:26,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 01:59:26,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789860408] [2023-08-31 01:59:26,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:26,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:59:26,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:26,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:59:26,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:59:26,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-31 01:59:26,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 175 transitions, 2416 flow. Second operand has 11 states, 11 states have (on average 119.36363636363636) internal successors, (1313), 11 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:26,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:26,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-31 01:59:26,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:27,409 INFO L130 PetriNetUnfolder]: 1534/3435 cut-off events. [2023-08-31 01:59:27,409 INFO L131 PetriNetUnfolder]: For 32259/32399 co-relation queries the response was YES. [2023-08-31 01:59:27,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17538 conditions, 3435 events. 1534/3435 cut-off events. For 32259/32399 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 23531 event pairs, 473 based on Foata normal form. 36/3430 useless extension candidates. Maximal degree in co-relation 17457. Up to 2574 conditions per place. [2023-08-31 01:59:27,434 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 146 selfloop transitions, 15 changer transitions 26/203 dead transitions. [2023-08-31 01:59:27,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 203 transitions, 2979 flow [2023-08-31 01:59:27,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:59:27,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:59:27,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1241 transitions. [2023-08-31 01:59:27,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4866666666666667 [2023-08-31 01:59:27,435 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1241 transitions. [2023-08-31 01:59:27,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1241 transitions. [2023-08-31 01:59:27,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:27,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1241 transitions. [2023-08-31 01:59:27,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 124.1) internal successors, (1241), 10 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:27,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 255.0) internal successors, (2805), 11 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:27,438 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 255.0) internal successors, (2805), 11 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:27,438 INFO L175 Difference]: Start difference. First operand has 218 places, 175 transitions, 2416 flow. Second operand 10 states and 1241 transitions. [2023-08-31 01:59:27,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 203 transitions, 2979 flow [2023-08-31 01:59:27,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 203 transitions, 2840 flow, removed 9 selfloop flow, removed 12 redundant places. [2023-08-31 01:59:27,518 INFO L231 Difference]: Finished difference. Result has 216 places, 164 transitions, 2130 flow [2023-08-31 01:59:27,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=2281, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2130, PETRI_PLACES=216, PETRI_TRANSITIONS=164} [2023-08-31 01:59:27,518 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 157 predicate places. [2023-08-31 01:59:27,518 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 164 transitions, 2130 flow [2023-08-31 01:59:27,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 119.36363636363636) internal successors, (1313), 11 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:27,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:27,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:27,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-08-31 01:59:27,519 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:27,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:27,519 INFO L85 PathProgramCache]: Analyzing trace with hash -176209265, now seen corresponding path program 74 times [2023-08-31 01:59:27,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:27,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098680784] [2023-08-31 01:59:27,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:27,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:27,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:27,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:27,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098680784] [2023-08-31 01:59:27,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098680784] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:27,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:27,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:59:27,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267714898] [2023-08-31 01:59:27,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:27,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:59:27,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:27,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:59:27,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:59:27,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-08-31 01:59:27,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 164 transitions, 2130 flow. Second operand has 10 states, 10 states have (on average 121.5) internal successors, (1215), 10 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:27,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:27,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-08-31 01:59:27,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:28,527 INFO L130 PetriNetUnfolder]: 1461/3377 cut-off events. [2023-08-31 01:59:28,527 INFO L131 PetriNetUnfolder]: For 29247/29451 co-relation queries the response was YES. [2023-08-31 01:59:28,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16169 conditions, 3377 events. 1461/3377 cut-off events. For 29247/29451 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 23885 event pairs, 554 based on Foata normal form. 74/3428 useless extension candidates. Maximal degree in co-relation 16091. Up to 2368 conditions per place. [2023-08-31 01:59:28,548 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 128 selfloop transitions, 27 changer transitions 20/193 dead transitions. [2023-08-31 01:59:28,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 193 transitions, 2798 flow [2023-08-31 01:59:28,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:59:28,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:59:28,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1141 transitions. [2023-08-31 01:59:28,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4971677559912854 [2023-08-31 01:59:28,549 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1141 transitions. [2023-08-31 01:59:28,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1141 transitions. [2023-08-31 01:59:28,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:28,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1141 transitions. [2023-08-31 01:59:28,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.77777777777777) internal successors, (1141), 9 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:28,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:28,551 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:28,551 INFO L175 Difference]: Start difference. First operand has 216 places, 164 transitions, 2130 flow. Second operand 9 states and 1141 transitions. [2023-08-31 01:59:28,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 193 transitions, 2798 flow [2023-08-31 01:59:28,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 193 transitions, 2710 flow, removed 22 selfloop flow, removed 13 redundant places. [2023-08-31 01:59:28,625 INFO L231 Difference]: Finished difference. Result has 206 places, 163 transitions, 2154 flow [2023-08-31 01:59:28,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=2052, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2154, PETRI_PLACES=206, PETRI_TRANSITIONS=163} [2023-08-31 01:59:28,625 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 147 predicate places. [2023-08-31 01:59:28,625 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 163 transitions, 2154 flow [2023-08-31 01:59:28,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 121.5) internal successors, (1215), 10 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:28,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:28,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:28,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-08-31 01:59:28,626 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:28,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:28,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1303163771, now seen corresponding path program 75 times [2023-08-31 01:59:28,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:28,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978731066] [2023-08-31 01:59:28,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:28,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:28,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:28,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:28,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978731066] [2023-08-31 01:59:28,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978731066] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:28,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:28,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:59:28,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147078045] [2023-08-31 01:59:28,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:28,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:59:28,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:28,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:59:28,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:59:28,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 255 [2023-08-31 01:59:28,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 163 transitions, 2154 flow. Second operand has 9 states, 9 states have (on average 122.88888888888889) internal successors, (1106), 9 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:28,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:28,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 255 [2023-08-31 01:59:28,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:29,461 INFO L130 PetriNetUnfolder]: 1396/3239 cut-off events. [2023-08-31 01:59:29,462 INFO L131 PetriNetUnfolder]: For 28699/28801 co-relation queries the response was YES. [2023-08-31 01:59:29,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15540 conditions, 3239 events. 1396/3239 cut-off events. For 28699/28801 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 22998 event pairs, 535 based on Foata normal form. 30/3226 useless extension candidates. Maximal degree in co-relation 15465. Up to 2327 conditions per place. [2023-08-31 01:59:29,485 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 122 selfloop transitions, 24 changer transitions 15/187 dead transitions. [2023-08-31 01:59:29,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 187 transitions, 2711 flow [2023-08-31 01:59:29,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:59:29,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:59:29,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1022 transitions. [2023-08-31 01:59:29,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5009803921568627 [2023-08-31 01:59:29,487 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1022 transitions. [2023-08-31 01:59:29,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1022 transitions. [2023-08-31 01:59:29,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:29,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1022 transitions. [2023-08-31 01:59:29,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 127.75) internal successors, (1022), 8 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:29,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:29,489 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:29,489 INFO L175 Difference]: Start difference. First operand has 206 places, 163 transitions, 2154 flow. Second operand 8 states and 1022 transitions. [2023-08-31 01:59:29,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 187 transitions, 2711 flow [2023-08-31 01:59:29,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 187 transitions, 2561 flow, removed 44 selfloop flow, removed 9 redundant places. [2023-08-31 01:59:29,563 INFO L231 Difference]: Finished difference. Result has 204 places, 162 transitions, 2069 flow [2023-08-31 01:59:29,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=2031, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2069, PETRI_PLACES=204, PETRI_TRANSITIONS=162} [2023-08-31 01:59:29,564 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 145 predicate places. [2023-08-31 01:59:29,564 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 162 transitions, 2069 flow [2023-08-31 01:59:29,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 122.88888888888889) internal successors, (1106), 9 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:29,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:29,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:29,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2023-08-31 01:59:29,564 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:29,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:29,564 INFO L85 PathProgramCache]: Analyzing trace with hash 591528845, now seen corresponding path program 76 times [2023-08-31 01:59:29,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:29,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354496795] [2023-08-31 01:59:29,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:29,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:29,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:29,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:29,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354496795] [2023-08-31 01:59:29,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354496795] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:29,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:29,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:59:29,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049525671] [2023-08-31 01:59:29,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:29,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:59:29,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:29,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:59:29,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:59:29,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-31 01:59:29,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 162 transitions, 2069 flow. Second operand has 9 states, 9 states have (on average 121.0) internal successors, (1089), 9 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:29,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:29,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-31 01:59:29,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:30,347 INFO L130 PetriNetUnfolder]: 1561/3591 cut-off events. [2023-08-31 01:59:30,348 INFO L131 PetriNetUnfolder]: For 31445/31593 co-relation queries the response was YES. [2023-08-31 01:59:30,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16752 conditions, 3591 events. 1561/3591 cut-off events. For 31445/31593 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 26064 event pairs, 544 based on Foata normal form. 84/3649 useless extension candidates. Maximal degree in co-relation 16676. Up to 2209 conditions per place. [2023-08-31 01:59:30,375 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 126 selfloop transitions, 29 changer transitions 24/201 dead transitions. [2023-08-31 01:59:30,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 201 transitions, 2840 flow [2023-08-31 01:59:30,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:59:30,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:59:30,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1020 transitions. [2023-08-31 01:59:30,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-31 01:59:30,376 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1020 transitions. [2023-08-31 01:59:30,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1020 transitions. [2023-08-31 01:59:30,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:30,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1020 transitions. [2023-08-31 01:59:30,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 127.5) internal successors, (1020), 8 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:30,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:30,378 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:30,378 INFO L175 Difference]: Start difference. First operand has 204 places, 162 transitions, 2069 flow. Second operand 8 states and 1020 transitions. [2023-08-31 01:59:30,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 201 transitions, 2840 flow [2023-08-31 01:59:30,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 201 transitions, 2757 flow, removed 9 selfloop flow, removed 9 redundant places. [2023-08-31 01:59:30,457 INFO L231 Difference]: Finished difference. Result has 203 places, 158 transitions, 2039 flow [2023-08-31 01:59:30,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=1990, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2039, PETRI_PLACES=203, PETRI_TRANSITIONS=158} [2023-08-31 01:59:30,457 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 144 predicate places. [2023-08-31 01:59:30,457 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 158 transitions, 2039 flow [2023-08-31 01:59:30,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 121.0) internal successors, (1089), 9 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:30,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:30,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:30,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2023-08-31 01:59:30,458 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:30,458 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:30,458 INFO L85 PathProgramCache]: Analyzing trace with hash -439902165, now seen corresponding path program 77 times [2023-08-31 01:59:30,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:30,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410779382] [2023-08-31 01:59:30,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:30,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:30,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:30,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:30,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:30,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410779382] [2023-08-31 01:59:30,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410779382] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:30,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:30,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:59:30,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244737258] [2023-08-31 01:59:30,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:30,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:59:30,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:30,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:59:30,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:59:30,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-08-31 01:59:30,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 158 transitions, 2039 flow. Second operand has 10 states, 10 states have (on average 121.6) internal successors, (1216), 10 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:30,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:30,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-08-31 01:59:30,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:31,394 INFO L130 PetriNetUnfolder]: 1369/3158 cut-off events. [2023-08-31 01:59:31,394 INFO L131 PetriNetUnfolder]: For 29887/30029 co-relation queries the response was YES. [2023-08-31 01:59:31,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15225 conditions, 3158 events. 1369/3158 cut-off events. For 29887/30029 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 22413 event pairs, 460 based on Foata normal form. 56/3167 useless extension candidates. Maximal degree in co-relation 15150. Up to 2157 conditions per place. [2023-08-31 01:59:31,418 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 114 selfloop transitions, 23 changer transitions 28/190 dead transitions. [2023-08-31 01:59:31,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 190 transitions, 2702 flow [2023-08-31 01:59:31,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:59:31,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:59:31,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1023 transitions. [2023-08-31 01:59:31,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014705882352941 [2023-08-31 01:59:31,420 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1023 transitions. [2023-08-31 01:59:31,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1023 transitions. [2023-08-31 01:59:31,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:31,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1023 transitions. [2023-08-31 01:59:31,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 127.875) internal successors, (1023), 8 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:31,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:31,422 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:31,422 INFO L175 Difference]: Start difference. First operand has 203 places, 158 transitions, 2039 flow. Second operand 8 states and 1023 transitions. [2023-08-31 01:59:31,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 190 transitions, 2702 flow [2023-08-31 01:59:31,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 190 transitions, 2534 flow, removed 30 selfloop flow, removed 10 redundant places. [2023-08-31 01:59:31,494 INFO L231 Difference]: Finished difference. Result has 202 places, 147 transitions, 1795 flow [2023-08-31 01:59:31,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=1853, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1795, PETRI_PLACES=202, PETRI_TRANSITIONS=147} [2023-08-31 01:59:31,495 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 143 predicate places. [2023-08-31 01:59:31,495 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 147 transitions, 1795 flow [2023-08-31 01:59:31,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 121.6) internal successors, (1216), 10 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:31,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:31,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:31,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2023-08-31 01:59:31,495 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:31,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:31,496 INFO L85 PathProgramCache]: Analyzing trace with hash -745775997, now seen corresponding path program 78 times [2023-08-31 01:59:31,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:31,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701988122] [2023-08-31 01:59:31,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:31,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:31,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:31,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:31,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701988122] [2023-08-31 01:59:31,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701988122] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:31,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:31,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:59:31,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288391105] [2023-08-31 01:59:31,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:31,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:59:31,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:31,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:59:31,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:59:31,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-08-31 01:59:31,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 147 transitions, 1795 flow. Second operand has 9 states, 9 states have (on average 121.88888888888889) internal successors, (1097), 9 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:31,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:31,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-08-31 01:59:31,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:32,405 INFO L130 PetriNetUnfolder]: 1281/3006 cut-off events. [2023-08-31 01:59:32,405 INFO L131 PetriNetUnfolder]: For 26561/26683 co-relation queries the response was YES. [2023-08-31 01:59:32,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13898 conditions, 3006 events. 1281/3006 cut-off events. For 26561/26683 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 21268 event pairs, 509 based on Foata normal form. 56/3033 useless extension candidates. Maximal degree in co-relation 13825. Up to 2131 conditions per place. [2023-08-31 01:59:32,428 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 110 selfloop transitions, 19 changer transitions 17/170 dead transitions. [2023-08-31 01:59:32,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 170 transitions, 2264 flow [2023-08-31 01:59:32,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:59:32,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:59:32,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1017 transitions. [2023-08-31 01:59:32,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4985294117647059 [2023-08-31 01:59:32,430 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1017 transitions. [2023-08-31 01:59:32,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1017 transitions. [2023-08-31 01:59:32,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:32,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1017 transitions. [2023-08-31 01:59:32,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 127.125) internal successors, (1017), 8 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:32,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:32,432 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:32,432 INFO L175 Difference]: Start difference. First operand has 202 places, 147 transitions, 1795 flow. Second operand 8 states and 1017 transitions. [2023-08-31 01:59:32,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 170 transitions, 2264 flow [2023-08-31 01:59:32,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 170 transitions, 2158 flow, removed 27 selfloop flow, removed 14 redundant places. [2023-08-31 01:59:32,498 INFO L231 Difference]: Finished difference. Result has 195 places, 145 transitions, 1724 flow [2023-08-31 01:59:32,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=1695, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1724, PETRI_PLACES=195, PETRI_TRANSITIONS=145} [2023-08-31 01:59:32,498 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 136 predicate places. [2023-08-31 01:59:32,499 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 145 transitions, 1724 flow [2023-08-31 01:59:32,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 121.88888888888889) internal successors, (1097), 9 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:32,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:32,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:32,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2023-08-31 01:59:32,499 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:32,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:32,499 INFO L85 PathProgramCache]: Analyzing trace with hash -845010047, now seen corresponding path program 79 times [2023-08-31 01:59:32,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:32,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301647415] [2023-08-31 01:59:32,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:32,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:32,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:32,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:32,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301647415] [2023-08-31 01:59:32,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301647415] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:32,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:32,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:59:32,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897127549] [2023-08-31 01:59:32,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:32,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:59:32,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:32,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:59:32,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:59:32,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-08-31 01:59:32,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 145 transitions, 1724 flow. Second operand has 9 states, 9 states have (on average 121.88888888888889) internal successors, (1097), 9 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:32,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:32,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-08-31 01:59:32,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:33,274 INFO L130 PetriNetUnfolder]: 1273/2876 cut-off events. [2023-08-31 01:59:33,274 INFO L131 PetriNetUnfolder]: For 22776/22924 co-relation queries the response was YES. [2023-08-31 01:59:33,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13106 conditions, 2876 events. 1273/2876 cut-off events. For 22776/22924 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 19466 event pairs, 411 based on Foata normal form. 58/2903 useless extension candidates. Maximal degree in co-relation 13039. Up to 2071 conditions per place. [2023-08-31 01:59:33,294 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 112 selfloop transitions, 24 changer transitions 17/177 dead transitions. [2023-08-31 01:59:33,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 177 transitions, 2295 flow [2023-08-31 01:59:33,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:59:33,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:59:33,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1024 transitions. [2023-08-31 01:59:33,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019607843137255 [2023-08-31 01:59:33,296 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1024 transitions. [2023-08-31 01:59:33,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1024 transitions. [2023-08-31 01:59:33,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:33,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1024 transitions. [2023-08-31 01:59:33,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.0) internal successors, (1024), 8 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:33,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:33,298 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:33,298 INFO L175 Difference]: Start difference. First operand has 195 places, 145 transitions, 1724 flow. Second operand 8 states and 1024 transitions. [2023-08-31 01:59:33,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 177 transitions, 2295 flow [2023-08-31 01:59:33,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 177 transitions, 2243 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-08-31 01:59:33,349 INFO L231 Difference]: Finished difference. Result has 196 places, 145 transitions, 1795 flow [2023-08-31 01:59:33,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=1678, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1795, PETRI_PLACES=196, PETRI_TRANSITIONS=145} [2023-08-31 01:59:33,349 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 137 predicate places. [2023-08-31 01:59:33,350 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 145 transitions, 1795 flow [2023-08-31 01:59:33,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 121.88888888888889) internal successors, (1097), 9 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:33,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:33,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:33,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2023-08-31 01:59:33,351 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:33,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:33,351 INFO L85 PathProgramCache]: Analyzing trace with hash 583139423, now seen corresponding path program 80 times [2023-08-31 01:59:33,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:33,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386463230] [2023-08-31 01:59:33,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:33,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:33,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:33,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:33,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386463230] [2023-08-31 01:59:33,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386463230] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:33,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:33,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:59:33,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106616280] [2023-08-31 01:59:33,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:33,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:59:33,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:33,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:59:33,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:59:33,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-08-31 01:59:33,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 145 transitions, 1795 flow. Second operand has 10 states, 10 states have (on average 121.5) internal successors, (1215), 10 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:33,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:33,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-08-31 01:59:33,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:34,221 INFO L130 PetriNetUnfolder]: 1213/2831 cut-off events. [2023-08-31 01:59:34,221 INFO L131 PetriNetUnfolder]: For 22867/22963 co-relation queries the response was YES. [2023-08-31 01:59:34,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12848 conditions, 2831 events. 1213/2831 cut-off events. For 22867/22963 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 19624 event pairs, 492 based on Foata normal form. 36/2846 useless extension candidates. Maximal degree in co-relation 12779. Up to 1999 conditions per place. [2023-08-31 01:59:34,242 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 110 selfloop transitions, 18 changer transitions 14/160 dead transitions. [2023-08-31 01:59:34,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 160 transitions, 2155 flow [2023-08-31 01:59:34,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:59:34,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:59:34,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1013 transitions. [2023-08-31 01:59:34,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965686274509804 [2023-08-31 01:59:34,243 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1013 transitions. [2023-08-31 01:59:34,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1013 transitions. [2023-08-31 01:59:34,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:34,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1013 transitions. [2023-08-31 01:59:34,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 126.625) internal successors, (1013), 8 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:34,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:34,245 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:34,245 INFO L175 Difference]: Start difference. First operand has 196 places, 145 transitions, 1795 flow. Second operand 8 states and 1013 transitions. [2023-08-31 01:59:34,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 160 transitions, 2155 flow [2023-08-31 01:59:34,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 160 transitions, 2068 flow, removed 29 selfloop flow, removed 6 redundant places. [2023-08-31 01:59:34,299 INFO L231 Difference]: Finished difference. Result has 194 places, 139 transitions, 1674 flow [2023-08-31 01:59:34,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=1699, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1674, PETRI_PLACES=194, PETRI_TRANSITIONS=139} [2023-08-31 01:59:34,299 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 135 predicate places. [2023-08-31 01:59:34,299 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 139 transitions, 1674 flow [2023-08-31 01:59:34,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 121.5) internal successors, (1215), 10 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:34,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:34,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:34,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2023-08-31 01:59:34,300 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:34,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:34,300 INFO L85 PathProgramCache]: Analyzing trace with hash -557162527, now seen corresponding path program 81 times [2023-08-31 01:59:34,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:34,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003099585] [2023-08-31 01:59:34,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:34,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:34,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:34,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:34,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003099585] [2023-08-31 01:59:34,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003099585] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:34,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:34,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 01:59:34,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694612540] [2023-08-31 01:59:34,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:34,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:59:34,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:34,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:59:34,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:59:34,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-08-31 01:59:34,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 139 transitions, 1674 flow. Second operand has 11 states, 11 states have (on average 121.27272727272727) internal successors, (1334), 11 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:34,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:34,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-08-31 01:59:34,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:35,120 INFO L130 PetriNetUnfolder]: 1176/2657 cut-off events. [2023-08-31 01:59:35,120 INFO L131 PetriNetUnfolder]: For 21450/21562 co-relation queries the response was YES. [2023-08-31 01:59:35,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12196 conditions, 2657 events. 1176/2657 cut-off events. For 21450/21562 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 17727 event pairs, 387 based on Foata normal form. 26/2652 useless extension candidates. Maximal degree in co-relation 12129. Up to 1912 conditions per place. [2023-08-31 01:59:35,138 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 106 selfloop transitions, 23 changer transitions 18/171 dead transitions. [2023-08-31 01:59:35,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 171 transitions, 2195 flow [2023-08-31 01:59:35,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:59:35,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:59:35,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1143 transitions. [2023-08-31 01:59:35,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980392156862745 [2023-08-31 01:59:35,140 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1143 transitions. [2023-08-31 01:59:35,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1143 transitions. [2023-08-31 01:59:35,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:35,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1143 transitions. [2023-08-31 01:59:35,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:35,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:35,142 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:35,142 INFO L175 Difference]: Start difference. First operand has 194 places, 139 transitions, 1674 flow. Second operand 9 states and 1143 transitions. [2023-08-31 01:59:35,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 171 transitions, 2195 flow [2023-08-31 01:59:35,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 171 transitions, 2138 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-08-31 01:59:35,186 INFO L231 Difference]: Finished difference. Result has 194 places, 137 transitions, 1658 flow [2023-08-31 01:59:35,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=1621, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1658, PETRI_PLACES=194, PETRI_TRANSITIONS=137} [2023-08-31 01:59:35,186 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 135 predicate places. [2023-08-31 01:59:35,186 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 137 transitions, 1658 flow [2023-08-31 01:59:35,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 121.27272727272727) internal successors, (1334), 11 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:35,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:35,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:35,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2023-08-31 01:59:35,187 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:35,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:35,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1935231223, now seen corresponding path program 82 times [2023-08-31 01:59:35,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:35,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79287512] [2023-08-31 01:59:35,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:35,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:35,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:35,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:35,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79287512] [2023-08-31 01:59:35,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79287512] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:35,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:35,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:59:35,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506576560] [2023-08-31 01:59:35,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:35,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:59:35,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:35,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:59:35,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:59:35,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-31 01:59:35,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 137 transitions, 1658 flow. Second operand has 10 states, 10 states have (on average 120.6) internal successors, (1206), 10 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:35,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:35,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-31 01:59:35,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:35,914 INFO L130 PetriNetUnfolder]: 1173/2741 cut-off events. [2023-08-31 01:59:35,915 INFO L131 PetriNetUnfolder]: For 21706/21786 co-relation queries the response was YES. [2023-08-31 01:59:35,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12336 conditions, 2741 events. 1173/2741 cut-off events. For 21706/21786 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 18925 event pairs, 426 based on Foata normal form. 28/2745 useless extension candidates. Maximal degree in co-relation 12269. Up to 1924 conditions per place. [2023-08-31 01:59:35,933 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 106 selfloop transitions, 22 changer transitions 17/168 dead transitions. [2023-08-31 01:59:35,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 168 transitions, 2191 flow [2023-08-31 01:59:35,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:59:35,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:59:35,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1017 transitions. [2023-08-31 01:59:35,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4985294117647059 [2023-08-31 01:59:35,934 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1017 transitions. [2023-08-31 01:59:35,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1017 transitions. [2023-08-31 01:59:35,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:35,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1017 transitions. [2023-08-31 01:59:35,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 127.125) internal successors, (1017), 8 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:35,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:35,936 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:35,936 INFO L175 Difference]: Start difference. First operand has 194 places, 137 transitions, 1658 flow. Second operand 8 states and 1017 transitions. [2023-08-31 01:59:35,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 168 transitions, 2191 flow [2023-08-31 01:59:35,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 168 transitions, 2123 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-08-31 01:59:35,986 INFO L231 Difference]: Finished difference. Result has 193 places, 136 transitions, 1651 flow [2023-08-31 01:59:35,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=1602, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1651, PETRI_PLACES=193, PETRI_TRANSITIONS=136} [2023-08-31 01:59:35,986 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 134 predicate places. [2023-08-31 01:59:35,987 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 136 transitions, 1651 flow [2023-08-31 01:59:35,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.6) internal successors, (1206), 10 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:35,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:35,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:35,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2023-08-31 01:59:35,987 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:35,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:35,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1293912979, now seen corresponding path program 83 times [2023-08-31 01:59:35,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:35,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394938371] [2023-08-31 01:59:35,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:35,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:36,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:36,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:36,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394938371] [2023-08-31 01:59:36,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394938371] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:36,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:36,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 01:59:36,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666184779] [2023-08-31 01:59:36,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:36,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 01:59:36,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:36,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 01:59:36,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-31 01:59:36,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-31 01:59:36,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 136 transitions, 1651 flow. Second operand has 6 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:36,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:36,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-31 01:59:36,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:36,535 INFO L130 PetriNetUnfolder]: 1084/2552 cut-off events. [2023-08-31 01:59:36,535 INFO L131 PetriNetUnfolder]: For 19882/19958 co-relation queries the response was YES. [2023-08-31 01:59:36,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11432 conditions, 2552 events. 1084/2552 cut-off events. For 19882/19958 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 17345 event pairs, 428 based on Foata normal form. 28/2556 useless extension candidates. Maximal degree in co-relation 11365. Up to 1788 conditions per place. [2023-08-31 01:59:36,555 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 100 selfloop transitions, 9 changer transitions 24/155 dead transitions. [2023-08-31 01:59:36,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 155 transitions, 2045 flow [2023-08-31 01:59:36,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:59:36,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:59:36,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 770 transitions. [2023-08-31 01:59:36,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032679738562091 [2023-08-31 01:59:36,557 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 770 transitions. [2023-08-31 01:59:36,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 770 transitions. [2023-08-31 01:59:36,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:36,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 770 transitions. [2023-08-31 01:59:36,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 128.33333333333334) internal successors, (770), 6 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:36,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:36,558 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:36,558 INFO L175 Difference]: Start difference. First operand has 193 places, 136 transitions, 1651 flow. Second operand 6 states and 770 transitions. [2023-08-31 01:59:36,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 155 transitions, 2045 flow [2023-08-31 01:59:36,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 155 transitions, 1981 flow, removed 17 selfloop flow, removed 5 redundant places. [2023-08-31 01:59:36,610 INFO L231 Difference]: Finished difference. Result has 194 places, 118 transitions, 1340 flow [2023-08-31 01:59:36,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=1591, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1340, PETRI_PLACES=194, PETRI_TRANSITIONS=118} [2023-08-31 01:59:36,611 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 135 predicate places. [2023-08-31 01:59:36,611 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 118 transitions, 1340 flow [2023-08-31 01:59:36,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:36,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:36,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:36,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2023-08-31 01:59:36,611 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:36,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:36,612 INFO L85 PathProgramCache]: Analyzing trace with hash 496234135, now seen corresponding path program 84 times [2023-08-31 01:59:36,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:36,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872822739] [2023-08-31 01:59:36,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:36,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:36,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:36,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:36,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872822739] [2023-08-31 01:59:36,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872822739] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:36,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:36,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:59:36,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440896479] [2023-08-31 01:59:36,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:36,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:59:36,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:36,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:59:36,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:59:36,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-31 01:59:36,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 118 transitions, 1340 flow. Second operand has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:59:36,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:36,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-31 01:59:36,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:37,291 INFO L130 PetriNetUnfolder]: 931/2237 cut-off events. [2023-08-31 01:59:37,292 INFO L131 PetriNetUnfolder]: For 16688/16746 co-relation queries the response was YES. [2023-08-31 01:59:37,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9840 conditions, 2237 events. 931/2237 cut-off events. For 16688/16746 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 14779 event pairs, 396 based on Foata normal form. 14/2237 useless extension candidates. Maximal degree in co-relation 9773. Up to 1556 conditions per place. [2023-08-31 01:59:37,306 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 86 selfloop transitions, 8 changer transitions 22/132 dead transitions. [2023-08-31 01:59:37,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 132 transitions, 1614 flow [2023-08-31 01:59:37,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:59:37,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:59:37,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1113 transitions. [2023-08-31 01:59:37,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849673202614379 [2023-08-31 01:59:37,307 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1113 transitions. [2023-08-31 01:59:37,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1113 transitions. [2023-08-31 01:59:37,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:37,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1113 transitions. [2023-08-31 01:59:37,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 123.66666666666667) internal successors, (1113), 9 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:37,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:37,309 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:37,309 INFO L175 Difference]: Start difference. First operand has 194 places, 118 transitions, 1340 flow. Second operand 9 states and 1113 transitions. [2023-08-31 01:59:37,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 132 transitions, 1614 flow [2023-08-31 01:59:37,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 132 transitions, 1446 flow, removed 27 selfloop flow, removed 20 redundant places. [2023-08-31 01:59:37,343 INFO L231 Difference]: Finished difference. Result has 184 places, 105 transitions, 1034 flow [2023-08-31 01:59:37,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=1140, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1034, PETRI_PLACES=184, PETRI_TRANSITIONS=105} [2023-08-31 01:59:37,343 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 125 predicate places. [2023-08-31 01:59:37,343 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 105 transitions, 1034 flow [2023-08-31 01:59:37,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:59:37,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:37,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:37,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2023-08-31 01:59:37,344 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:37,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:37,344 INFO L85 PathProgramCache]: Analyzing trace with hash 5158091, now seen corresponding path program 85 times [2023-08-31 01:59:37,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:37,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287068485] [2023-08-31 01:59:37,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:37,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:37,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:37,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:37,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287068485] [2023-08-31 01:59:37,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287068485] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:37,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:37,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:59:37,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110000693] [2023-08-31 01:59:37,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:37,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:59:37,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:37,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:59:37,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:59:37,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-31 01:59:37,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 105 transitions, 1034 flow. Second operand has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:59:37,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:37,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-31 01:59:37,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:37,978 INFO L130 PetriNetUnfolder]: 800/1848 cut-off events. [2023-08-31 01:59:37,978 INFO L131 PetriNetUnfolder]: For 11788/11872 co-relation queries the response was YES. [2023-08-31 01:59:37,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7971 conditions, 1848 events. 800/1848 cut-off events. For 11788/11872 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 11256 event pairs, 273 based on Foata normal form. 16/1844 useless extension candidates. Maximal degree in co-relation 7913. Up to 1331 conditions per place. [2023-08-31 01:59:37,988 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 85 selfloop transitions, 10 changer transitions 22/133 dead transitions. [2023-08-31 01:59:37,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 133 transitions, 1422 flow [2023-08-31 01:59:37,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:59:37,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:59:37,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1123 transitions. [2023-08-31 01:59:37,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48932461873638344 [2023-08-31 01:59:37,989 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1123 transitions. [2023-08-31 01:59:37,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1123 transitions. [2023-08-31 01:59:37,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:37,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1123 transitions. [2023-08-31 01:59:37,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 124.77777777777777) internal successors, (1123), 9 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:37,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:37,991 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:37,992 INFO L175 Difference]: Start difference. First operand has 184 places, 105 transitions, 1034 flow. Second operand 9 states and 1123 transitions. [2023-08-31 01:59:37,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 133 transitions, 1422 flow [2023-08-31 01:59:38,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 133 transitions, 1359 flow, removed 18 selfloop flow, removed 11 redundant places. [2023-08-31 01:59:38,013 INFO L231 Difference]: Finished difference. Result has 171 places, 101 transitions, 948 flow [2023-08-31 01:59:38,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=948, PETRI_PLACES=171, PETRI_TRANSITIONS=101} [2023-08-31 01:59:38,014 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 112 predicate places. [2023-08-31 01:59:38,014 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 101 transitions, 948 flow [2023-08-31 01:59:38,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:59:38,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:38,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:38,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2023-08-31 01:59:38,015 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:38,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:38,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1881647145, now seen corresponding path program 86 times [2023-08-31 01:59:38,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:38,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179036823] [2023-08-31 01:59:38,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:38,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:38,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:38,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:38,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179036823] [2023-08-31 01:59:38,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179036823] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:38,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:38,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 01:59:38,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170880234] [2023-08-31 01:59:38,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:38,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:59:38,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:38,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:59:38,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:59:38,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-31 01:59:38,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 101 transitions, 948 flow. Second operand has 11 states, 11 states have (on average 120.36363636363636) internal successors, (1324), 11 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:38,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:38,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-31 01:59:38,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:38,749 INFO L130 PetriNetUnfolder]: 738/1726 cut-off events. [2023-08-31 01:59:38,749 INFO L131 PetriNetUnfolder]: For 11134/11224 co-relation queries the response was YES. [2023-08-31 01:59:38,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7348 conditions, 1726 events. 738/1726 cut-off events. For 11134/11224 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 10469 event pairs, 279 based on Foata normal form. 14/1718 useless extension candidates. Maximal degree in co-relation 7295. Up to 1241 conditions per place. [2023-08-31 01:59:38,759 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 80 selfloop transitions, 14 changer transitions 11/126 dead transitions. [2023-08-31 01:59:38,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 126 transitions, 1299 flow [2023-08-31 01:59:38,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:59:38,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:59:38,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1125 transitions. [2023-08-31 01:59:38,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2023-08-31 01:59:38,760 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1125 transitions. [2023-08-31 01:59:38,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1125 transitions. [2023-08-31 01:59:38,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:38,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1125 transitions. [2023-08-31 01:59:38,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 125.0) internal successors, (1125), 9 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:38,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:38,763 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:38,763 INFO L175 Difference]: Start difference. First operand has 171 places, 101 transitions, 948 flow. Second operand 9 states and 1125 transitions. [2023-08-31 01:59:38,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 126 transitions, 1299 flow [2023-08-31 01:59:38,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 126 transitions, 1256 flow, removed 4 selfloop flow, removed 11 redundant places. [2023-08-31 01:59:38,781 INFO L231 Difference]: Finished difference. Result has 166 places, 100 transitions, 932 flow [2023-08-31 01:59:38,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=932, PETRI_PLACES=166, PETRI_TRANSITIONS=100} [2023-08-31 01:59:38,781 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 107 predicate places. [2023-08-31 01:59:38,782 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 100 transitions, 932 flow [2023-08-31 01:59:38,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 120.36363636363636) internal successors, (1324), 11 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:38,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:38,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:38,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2023-08-31 01:59:38,782 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:38,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:38,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1773451503, now seen corresponding path program 87 times [2023-08-31 01:59:38,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:38,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360435799] [2023-08-31 01:59:38,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:38,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:39,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:39,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:39,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360435799] [2023-08-31 01:59:39,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360435799] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:39,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:39,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:59:39,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070000998] [2023-08-31 01:59:39,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:39,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:59:39,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:39,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:59:39,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:59:39,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-31 01:59:39,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 100 transitions, 932 flow. Second operand has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:59:39,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:39,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-31 01:59:39,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:39,491 INFO L130 PetriNetUnfolder]: 678/1598 cut-off events. [2023-08-31 01:59:39,491 INFO L131 PetriNetUnfolder]: For 9480/9568 co-relation queries the response was YES. [2023-08-31 01:59:39,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6680 conditions, 1598 events. 678/1598 cut-off events. For 9480/9568 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 9408 event pairs, 224 based on Foata normal form. 38/1620 useless extension candidates. Maximal degree in co-relation 6628. Up to 988 conditions per place. [2023-08-31 01:59:39,500 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 78 selfloop transitions, 16 changer transitions 17/127 dead transitions. [2023-08-31 01:59:39,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 127 transitions, 1269 flow [2023-08-31 01:59:39,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:59:39,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:59:39,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1242 transitions. [2023-08-31 01:59:39,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48705882352941177 [2023-08-31 01:59:39,502 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1242 transitions. [2023-08-31 01:59:39,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1242 transitions. [2023-08-31 01:59:39,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:39,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1242 transitions. [2023-08-31 01:59:39,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 124.2) internal successors, (1242), 10 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:39,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 255.0) internal successors, (2805), 11 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:39,504 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 255.0) internal successors, (2805), 11 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:39,504 INFO L175 Difference]: Start difference. First operand has 166 places, 100 transitions, 932 flow. Second operand 10 states and 1242 transitions. [2023-08-31 01:59:39,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 127 transitions, 1269 flow [2023-08-31 01:59:39,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 127 transitions, 1223 flow, removed 8 selfloop flow, removed 10 redundant places. [2023-08-31 01:59:39,522 INFO L231 Difference]: Finished difference. Result has 165 places, 95 transitions, 868 flow [2023-08-31 01:59:39,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=868, PETRI_PLACES=165, PETRI_TRANSITIONS=95} [2023-08-31 01:59:39,522 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 106 predicate places. [2023-08-31 01:59:39,522 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 95 transitions, 868 flow [2023-08-31 01:59:39,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:59:39,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:39,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:39,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2023-08-31 01:59:39,523 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:39,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:39,523 INFO L85 PathProgramCache]: Analyzing trace with hash -18448203, now seen corresponding path program 88 times [2023-08-31 01:59:39,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:39,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088521921] [2023-08-31 01:59:39,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:39,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:39,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:39,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:39,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088521921] [2023-08-31 01:59:39,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088521921] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:39,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:39,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:59:39,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871006690] [2023-08-31 01:59:39,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:39,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:59:39,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:39,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:59:39,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:59:39,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-31 01:59:39,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 95 transitions, 868 flow. Second operand has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:59:39,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:39,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-31 01:59:39,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:40,131 INFO L130 PetriNetUnfolder]: 585/1407 cut-off events. [2023-08-31 01:59:40,132 INFO L131 PetriNetUnfolder]: For 8474/8544 co-relation queries the response was YES. [2023-08-31 01:59:40,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5863 conditions, 1407 events. 585/1407 cut-off events. For 8474/8544 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 8079 event pairs, 192 based on Foata normal form. 32/1427 useless extension candidates. Maximal degree in co-relation 5814. Up to 858 conditions per place. [2023-08-31 01:59:40,138 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 70 selfloop transitions, 10 changer transitions 25/121 dead transitions. [2023-08-31 01:59:40,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 121 transitions, 1171 flow [2023-08-31 01:59:40,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:59:40,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:59:40,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1240 transitions. [2023-08-31 01:59:40,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48627450980392156 [2023-08-31 01:59:40,139 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1240 transitions. [2023-08-31 01:59:40,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1240 transitions. [2023-08-31 01:59:40,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:40,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1240 transitions. [2023-08-31 01:59:40,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:40,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 255.0) internal successors, (2805), 11 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:40,142 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 255.0) internal successors, (2805), 11 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:40,142 INFO L175 Difference]: Start difference. First operand has 165 places, 95 transitions, 868 flow. Second operand 10 states and 1240 transitions. [2023-08-31 01:59:40,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 121 transitions, 1171 flow [2023-08-31 01:59:40,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 121 transitions, 1120 flow, removed 5 selfloop flow, removed 10 redundant places. [2023-08-31 01:59:40,162 INFO L231 Difference]: Finished difference. Result has 162 places, 86 transitions, 742 flow [2023-08-31 01:59:40,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=742, PETRI_PLACES=162, PETRI_TRANSITIONS=86} [2023-08-31 01:59:40,163 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 103 predicate places. [2023-08-31 01:59:40,163 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 86 transitions, 742 flow [2023-08-31 01:59:40,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2023-08-31 01:59:40,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:40,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:40,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2023-08-31 01:59:40,164 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:40,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:40,164 INFO L85 PathProgramCache]: Analyzing trace with hash -128493951, now seen corresponding path program 89 times [2023-08-31 01:59:40,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:40,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589662821] [2023-08-31 01:59:40,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:40,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:40,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:40,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:40,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589662821] [2023-08-31 01:59:40,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589662821] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:40,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:40,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:59:40,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127740376] [2023-08-31 01:59:40,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:40,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:59:40,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:40,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:59:40,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-31 01:59:40,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-31 01:59:40,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 86 transitions, 742 flow. Second operand has 8 states, 8 states have (on average 120.625) internal successors, (965), 8 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:40,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:40,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-31 01:59:40,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:40,613 INFO L130 PetriNetUnfolder]: 470/1156 cut-off events. [2023-08-31 01:59:40,613 INFO L131 PetriNetUnfolder]: For 6708/6772 co-relation queries the response was YES. [2023-08-31 01:59:40,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4880 conditions, 1156 events. 470/1156 cut-off events. For 6708/6772 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6313 event pairs, 201 based on Foata normal form. 12/1158 useless extension candidates. Maximal degree in co-relation 4832. Up to 800 conditions per place. [2023-08-31 01:59:40,619 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 57 selfloop transitions, 3 changer transitions 27/103 dead transitions. [2023-08-31 01:59:40,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 103 transitions, 983 flow [2023-08-31 01:59:40,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:59:40,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:59:40,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 878 transitions. [2023-08-31 01:59:40,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918767507002801 [2023-08-31 01:59:40,620 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 878 transitions. [2023-08-31 01:59:40,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 878 transitions. [2023-08-31 01:59:40,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:40,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 878 transitions. [2023-08-31 01:59:40,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 125.42857142857143) internal successors, (878), 7 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:40,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:40,623 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:40,623 INFO L175 Difference]: Start difference. First operand has 162 places, 86 transitions, 742 flow. Second operand 7 states and 878 transitions. [2023-08-31 01:59:40,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 103 transitions, 983 flow [2023-08-31 01:59:40,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 103 transitions, 930 flow, removed 12 selfloop flow, removed 8 redundant places. [2023-08-31 01:59:40,638 INFO L231 Difference]: Finished difference. Result has 152 places, 74 transitions, 573 flow [2023-08-31 01:59:40,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=573, PETRI_PLACES=152, PETRI_TRANSITIONS=74} [2023-08-31 01:59:40,638 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 93 predicate places. [2023-08-31 01:59:40,638 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 74 transitions, 573 flow [2023-08-31 01:59:40,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 120.625) internal successors, (965), 8 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:40,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:40,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:40,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2023-08-31 01:59:40,639 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:40,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:40,640 INFO L85 PathProgramCache]: Analyzing trace with hash -766135091, now seen corresponding path program 90 times [2023-08-31 01:59:40,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:40,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793268564] [2023-08-31 01:59:40,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:40,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:41,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:41,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:41,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793268564] [2023-08-31 01:59:41,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793268564] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:41,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:41,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:59:41,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989973611] [2023-08-31 01:59:41,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:41,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:59:41,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:41,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:59:41,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:59:41,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 255 [2023-08-31 01:59:41,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 74 transitions, 573 flow. Second operand has 10 states, 10 states have (on average 122.5) internal successors, (1225), 10 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:41,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:41,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 255 [2023-08-31 01:59:41,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:59:41,411 INFO L130 PetriNetUnfolder]: 305/801 cut-off events. [2023-08-31 01:59:41,411 INFO L131 PetriNetUnfolder]: For 4348/4394 co-relation queries the response was YES. [2023-08-31 01:59:41,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3348 conditions, 801 events. 305/801 cut-off events. For 4348/4394 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3980 event pairs, 136 based on Foata normal form. 10/800 useless extension candidates. Maximal degree in co-relation 3303. Up to 554 conditions per place. [2023-08-31 01:59:41,415 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 46 selfloop transitions, 9 changer transitions 13/87 dead transitions. [2023-08-31 01:59:41,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 87 transitions, 746 flow [2023-08-31 01:59:41,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:59:41,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:59:41,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1128 transitions. [2023-08-31 01:59:41,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4915032679738562 [2023-08-31 01:59:41,416 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1128 transitions. [2023-08-31 01:59:41,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1128 transitions. [2023-08-31 01:59:41,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:59:41,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1128 transitions. [2023-08-31 01:59:41,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 125.33333333333333) internal successors, (1128), 9 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:41,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:41,419 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:41,419 INFO L175 Difference]: Start difference. First operand has 152 places, 74 transitions, 573 flow. Second operand 9 states and 1128 transitions. [2023-08-31 01:59:41,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 87 transitions, 746 flow [2023-08-31 01:59:41,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 87 transitions, 643 flow, removed 19 selfloop flow, removed 23 redundant places. [2023-08-31 01:59:41,426 INFO L231 Difference]: Finished difference. Result has 129 places, 68 transitions, 433 flow [2023-08-31 01:59:41,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=433, PETRI_PLACES=129, PETRI_TRANSITIONS=68} [2023-08-31 01:59:41,426 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 70 predicate places. [2023-08-31 01:59:41,427 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 68 transitions, 433 flow [2023-08-31 01:59:41,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.5) internal successors, (1225), 10 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:41,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:59:41,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:59:41,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2023-08-31 01:59:41,427 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:59:41,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:59:41,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1883316459, now seen corresponding path program 91 times [2023-08-31 01:59:41,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:59:41,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892952525] [2023-08-31 01:59:41,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:59:41,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:59:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:59:41,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:59:41,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:59:41,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892952525] [2023-08-31 01:59:41,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892952525] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:59:41,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:59:41,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 01:59:41,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960889953] [2023-08-31 01:59:41,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:59:41,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:59:41,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:59:41,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:59:41,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:59:42,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-31 01:59:42,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 68 transitions, 433 flow. Second operand has 10 states, 10 states have (on average 120.6) internal successors, (1206), 10 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:59:42,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:59:42,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-31 01:59:42,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand