./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 BEFORE --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 BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 12:38:45,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 12:38:45,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 12:38:45,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 12:38:45,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 12:38:45,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 12:38:45,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 12:38:45,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 12:38:45,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 12:38:45,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 12:38:45,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 12:38:45,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 12:38:45,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 12:38:45,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 12:38:45,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 12:38:45,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 12:38:45,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 12:38:45,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 12:38:45,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 12:38:45,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 12:38:45,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 12:38:45,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 12:38:45,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 12:38:45,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 12:38:45,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 12:38:45,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 12:38:45,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 12:38:45,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 12:38:45,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 12:38:45,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 12:38:45,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 12:38:45,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 12:38:45,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 12:38:45,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 12:38:45,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 12:38:45,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 12:38:45,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 12:38:45,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 12:38:45,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 12:38:45,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 12:38:45,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 12:38:45,536 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 12:38:45,576 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 12:38:45,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 12:38:45,577 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 12:38:45,577 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 12:38:45,578 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 12:38:45,578 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 12:38:45,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 12:38:45,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 12:38:45,579 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 12:38:45,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 12:38:45,580 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 12:38:45,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 12:38:45,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 12:38:45,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 12:38:45,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 12:38:45,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 12:38:45,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 12:38:45,581 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 12:38:45,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 12:38:45,582 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 12:38:45,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 12:38:45,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 12:38:45,582 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 12:38:45,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 12:38:45,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 12:38:45,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 12:38:45,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 12:38:45,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 12:38:45,584 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 12:38:45,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 12:38:45,584 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 12:38:45,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 12:38:45,585 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 12:38:45,585 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 12:38:45,585 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 12:38:45,585 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 12:38:45,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 12:38:45,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 12:38:45,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 12:38:45,904 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 12:38:45,904 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 12:38:45,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c [2023-09-01 12:38:46,978 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 12:38:47,213 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 12:38:47,213 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c [2023-09-01 12:38:47,219 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5bc63de8/9c92b62b085a4a71bf2fad16faddfb89/FLAG807ea3b3a [2023-09-01 12:38:47,231 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5bc63de8/9c92b62b085a4a71bf2fad16faddfb89 [2023-09-01 12:38:47,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 12:38:47,234 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 12:38:47,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 12:38:47,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 12:38:47,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 12:38:47,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:38:47" (1/1) ... [2023-09-01 12:38:47,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@792bbed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:38:47, skipping insertion in model container [2023-09-01 12:38:47,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:38:47" (1/1) ... [2023-09-01 12:38:47,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 12:38:47,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 12:38:47,422 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] [2023-09-01 12:38:47,432 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 12:38:47,444 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 12:38:47,490 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] [2023-09-01 12:38:47,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 12:38:47,507 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 12:38:47,507 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 12:38:47,513 INFO L208 MainTranslator]: Completed translation [2023-09-01 12:38:47,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:38:47 WrapperNode [2023-09-01 12:38:47,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 12:38:47,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 12:38:47,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 12:38:47,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 12:38:47,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:38:47" (1/1) ... [2023-09-01 12:38:47,533 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:38:47" (1/1) ... [2023-09-01 12:38:47,597 INFO L138 Inliner]: procedures = 22, calls = 110, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 265 [2023-09-01 12:38:47,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 12:38:47,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 12:38:47,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 12:38:47,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 12:38:47,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:38:47" (1/1) ... [2023-09-01 12:38:47,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:38:47" (1/1) ... [2023-09-01 12:38:47,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:38:47" (1/1) ... [2023-09-01 12:38:47,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:38:47" (1/1) ... [2023-09-01 12:38:47,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:38:47" (1/1) ... [2023-09-01 12:38:47,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:38:47" (1/1) ... [2023-09-01 12:38:47,676 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:38:47" (1/1) ... [2023-09-01 12:38:47,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:38:47" (1/1) ... [2023-09-01 12:38:47,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 12:38:47,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 12:38:47,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 12:38:47,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 12:38:47,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:38:47" (1/1) ... [2023-09-01 12:38:47,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 12:38:47,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:38:47,722 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) [2023-09-01 12:38:47,736 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 [2023-09-01 12:38:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 12:38:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 12:38:47,762 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 12:38:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 12:38:47,762 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 12:38:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 12:38:47,763 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 12:38:47,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 12:38:47,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 12:38:47,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 12:38:47,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 12:38:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 12:38:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 12:38:47,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 12:38:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 12:38:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 12:38:47,766 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 12:38:47,880 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 12:38:47,882 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 12:38:48,240 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 12:38:48,379 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 12:38:48,380 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 12:38:48,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:38:48 BoogieIcfgContainer [2023-09-01 12:38:48,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 12:38:48,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 12:38:48,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 12:38:48,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 12:38:48,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:38:47" (1/3) ... [2023-09-01 12:38:48,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e786b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:38:48, skipping insertion in model container [2023-09-01 12:38:48,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:38:47" (2/3) ... [2023-09-01 12:38:48,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e786b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:38:48, skipping insertion in model container [2023-09-01 12:38:48,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:38:48" (3/3) ... [2023-09-01 12:38:48,403 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2023-09-01 12:38:48,409 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 12:38:48,421 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 12:38:48,426 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 12:38:48,426 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 12:38:48,564 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 12:38:48,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 155 transitions, 334 flow [2023-09-01 12:38:48,677 INFO L130 PetriNetUnfolder]: 2/152 cut-off events. [2023-09-01 12:38:48,677 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 12:38:48,681 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. [2023-09-01 12:38:48,681 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 155 transitions, 334 flow [2023-09-01 12:38:48,686 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 142 transitions, 302 flow [2023-09-01 12:38:48,689 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 12:38:48,697 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 150 places, 142 transitions, 302 flow [2023-09-01 12:38:48,700 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 150 places, 142 transitions, 302 flow [2023-09-01 12:38:48,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 142 transitions, 302 flow [2023-09-01 12:38:48,734 INFO L130 PetriNetUnfolder]: 2/142 cut-off events. [2023-09-01 12:38:48,734 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 12:38:48,735 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. [2023-09-01 12:38:48,737 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2023-09-01 12:38:52,505 INFO L134 LiptonReduction]: Checked pairs total: 20861 [2023-09-01 12:38:52,506 INFO L136 LiptonReduction]: Total number of compositions: 100 [2023-09-01 12:38:52,518 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 12:38:52,523 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;@2e7d499, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 12:38:52,524 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-09-01 12:38:52,535 INFO L130 PetriNetUnfolder]: 0/48 cut-off events. [2023-09-01 12:38:52,535 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 12:38:52,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:38:52,536 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] [2023-09-01 12:38:52,537 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)] === [2023-09-01 12:38:52,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:38:52,541 INFO L85 PathProgramCache]: Analyzing trace with hash -685701629, now seen corresponding path program 1 times [2023-09-01 12:38:52,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:38:52,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893433162] [2023-09-01 12:38:52,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:38:52,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:38:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:38:53,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:38:53,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:38:53,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893433162] [2023-09-01 12:38:53,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893433162] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:38:53,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:38:53,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:38:53,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787459728] [2023-09-01 12:38:53,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:38:53,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:38:53,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:38:53,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:38:53,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:38:53,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-09-01 12:38:53,595 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) [2023-09-01 12:38:53,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:38:53,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-09-01 12:38:53,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:38:54,695 INFO L130 PetriNetUnfolder]: 4666/7168 cut-off events. [2023-09-01 12:38:54,696 INFO L131 PetriNetUnfolder]: For 394/394 co-relation queries the response was YES. [2023-09-01 12:38:54,708 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. [2023-09-01 12:38:54,742 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 147 selfloop transitions, 15 changer transitions 19/193 dead transitions. [2023-09-01 12:38:54,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 193 transitions, 820 flow [2023-09-01 12:38:54,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 12:38:54,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 12:38:54,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1469 transitions. [2023-09-01 12:38:54,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5237076648841354 [2023-09-01 12:38:54,765 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1469 transitions. [2023-09-01 12:38:54,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1469 transitions. [2023-09-01 12:38:54,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:38:54,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1469 transitions. [2023-09-01 12:38:54,778 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) [2023-09-01 12:38:54,785 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) [2023-09-01 12:38:54,787 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) [2023-09-01 12:38:54,789 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 116 flow. Second operand 11 states and 1469 transitions. [2023-09-01 12:38:54,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 193 transitions, 820 flow [2023-09-01 12:38:54,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 193 transitions, 772 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 12:38:54,801 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 196 flow [2023-09-01 12:38:54,803 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} [2023-09-01 12:38:54,806 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 8 predicate places. [2023-09-01 12:38:54,806 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 196 flow [2023-09-01 12:38:54,807 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) [2023-09-01 12:38:54,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:38:54,807 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] [2023-09-01 12:38:54,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 12:38:54,808 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)] === [2023-09-01 12:38:54,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:38:54,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1882952335, now seen corresponding path program 2 times [2023-09-01 12:38:54,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:38:54,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043824211] [2023-09-01 12:38:54,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:38:54,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:38:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:38:55,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:38:55,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:38:55,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043824211] [2023-09-01 12:38:55,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043824211] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:38:55,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:38:55,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:38:55,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548321197] [2023-09-01 12:38:55,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:38:55,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:38:55,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:38:55,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:38:55,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-09-01 12:38:55,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-09-01 12:38:55,534 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) [2023-09-01 12:38:55,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:38:55,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-09-01 12:38:55,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:38:57,086 INFO L130 PetriNetUnfolder]: 10227/17591 cut-off events. [2023-09-01 12:38:57,086 INFO L131 PetriNetUnfolder]: For 290/298 co-relation queries the response was YES. [2023-09-01 12:38:57,128 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. [2023-09-01 12:38:57,204 INFO L137 encePairwiseOnDemand]: 241/255 looper letters, 135 selfloop transitions, 37 changer transitions 0/201 dead transitions. [2023-09-01 12:38:57,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 201 transitions, 820 flow [2023-09-01 12:38:57,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:38:57,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:38:57,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1228 transitions. [2023-09-01 12:38:57,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5350762527233115 [2023-09-01 12:38:57,208 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1228 transitions. [2023-09-01 12:38:57,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1228 transitions. [2023-09-01 12:38:57,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:38:57,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1228 transitions. [2023-09-01 12:38:57,212 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) [2023-09-01 12:38:57,216 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) [2023-09-01 12:38:57,218 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) [2023-09-01 12:38:57,218 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 196 flow. Second operand 9 states and 1228 transitions. [2023-09-01 12:38:57,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 201 transitions, 820 flow [2023-09-01 12:38:57,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 201 transitions, 818 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 12:38:57,228 INFO L231 Difference]: Finished difference. Result has 80 places, 104 transitions, 460 flow [2023-09-01 12:38:57,229 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} [2023-09-01 12:38:57,229 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 21 predicate places. [2023-09-01 12:38:57,230 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 104 transitions, 460 flow [2023-09-01 12:38:57,230 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) [2023-09-01 12:38:57,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:38:57,231 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] [2023-09-01 12:38:57,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 12:38:57,231 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)] === [2023-09-01 12:38:57,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:38:57,232 INFO L85 PathProgramCache]: Analyzing trace with hash -670871719, now seen corresponding path program 3 times [2023-09-01 12:38:57,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:38:57,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117504045] [2023-09-01 12:38:57,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:38:57,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:38:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:38:57,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:38:57,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:38:57,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117504045] [2023-09-01 12:38:57,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117504045] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:38:57,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:38:57,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 12:38:57,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655458625] [2023-09-01 12:38:57,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:38:57,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 12:38:57,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:38:57,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 12:38:57,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 12:38:57,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 255 [2023-09-01 12:38:57,385 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) [2023-09-01 12:38:57,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:38:57,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 255 [2023-09-01 12:38:57,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:38:58,607 INFO L130 PetriNetUnfolder]: 7985/14097 cut-off events. [2023-09-01 12:38:58,607 INFO L131 PetriNetUnfolder]: For 9371/9798 co-relation queries the response was YES. [2023-09-01 12:38:58,658 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. [2023-09-01 12:38:58,716 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 84 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-09-01 12:38:58,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 131 transitions, 756 flow [2023-09-01 12:38:58,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 12:38:58,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 12:38:58,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2023-09-01 12:38:58,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5633986928104575 [2023-09-01 12:38:58,718 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2023-09-01 12:38:58,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2023-09-01 12:38:58,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:38:58,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2023-09-01 12:38:58,720 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) [2023-09-01 12:38:58,722 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) [2023-09-01 12:38:58,722 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) [2023-09-01 12:38:58,722 INFO L175 Difference]: Start difference. First operand has 80 places, 104 transitions, 460 flow. Second operand 3 states and 431 transitions. [2023-09-01 12:38:58,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 131 transitions, 756 flow [2023-09-01 12:38:58,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 131 transitions, 756 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 12:38:58,771 INFO L231 Difference]: Finished difference. Result has 83 places, 103 transitions, 464 flow [2023-09-01 12:38:58,771 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} [2023-09-01 12:38:58,772 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 24 predicate places. [2023-09-01 12:38:58,772 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 103 transitions, 464 flow [2023-09-01 12:38:58,772 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) [2023-09-01 12:38:58,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:38:58,773 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] [2023-09-01 12:38:58,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 12:38:58,773 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)] === [2023-09-01 12:38:58,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:38:58,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1911915813, now seen corresponding path program 4 times [2023-09-01 12:38:58,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:38:58,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398283402] [2023-09-01 12:38:58,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:38:58,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:38:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:38:58,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:38:58,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:38:58,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398283402] [2023-09-01 12:38:58,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398283402] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:38:58,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:38:58,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 12:38:58,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592338318] [2023-09-01 12:38:58,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:38:58,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 12:38:58,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:38:58,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 12:38:58,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 12:38:58,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 255 [2023-09-01 12:38:58,931 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) [2023-09-01 12:38:58,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:38:58,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 255 [2023-09-01 12:38:58,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:39:00,130 INFO L130 PetriNetUnfolder]: 8352/15087 cut-off events. [2023-09-01 12:39:00,130 INFO L131 PetriNetUnfolder]: For 10572/10975 co-relation queries the response was YES. [2023-09-01 12:39:00,166 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. [2023-09-01 12:39:00,213 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 85 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2023-09-01 12:39:00,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 132 transitions, 766 flow [2023-09-01 12:39:00,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 12:39:00,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 12:39:00,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2023-09-01 12:39:00,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5633986928104575 [2023-09-01 12:39:00,215 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2023-09-01 12:39:00,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2023-09-01 12:39:00,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:39:00,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2023-09-01 12:39:00,217 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) [2023-09-01 12:39:00,218 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) [2023-09-01 12:39:00,218 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) [2023-09-01 12:39:00,219 INFO L175 Difference]: Start difference. First operand has 83 places, 103 transitions, 464 flow. Second operand 3 states and 431 transitions. [2023-09-01 12:39:00,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 132 transitions, 766 flow [2023-09-01 12:39:00,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 132 transitions, 762 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 12:39:00,278 INFO L231 Difference]: Finished difference. Result has 84 places, 103 transitions, 470 flow [2023-09-01 12:39:00,279 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} [2023-09-01 12:39:00,279 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 25 predicate places. [2023-09-01 12:39:00,279 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 103 transitions, 470 flow [2023-09-01 12:39:00,280 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) [2023-09-01 12:39:00,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:39:00,280 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] [2023-09-01 12:39:00,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 12:39:00,281 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)] === [2023-09-01 12:39:00,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:39:00,281 INFO L85 PathProgramCache]: Analyzing trace with hash -909351973, now seen corresponding path program 5 times [2023-09-01 12:39:00,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:39:00,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323415087] [2023-09-01 12:39:00,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:39:00,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:39:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:39:00,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:39:00,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:39:00,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323415087] [2023-09-01 12:39:00,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323415087] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:39:00,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:39:00,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 12:39:00,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290001788] [2023-09-01 12:39:00,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:39:00,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 12:39:00,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:39:00,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 12:39:00,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 12:39:00,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 255 [2023-09-01 12:39:00,393 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) [2023-09-01 12:39:00,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:39:00,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 255 [2023-09-01 12:39:00,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:39:01,491 INFO L130 PetriNetUnfolder]: 8350/15312 cut-off events. [2023-09-01 12:39:01,491 INFO L131 PetriNetUnfolder]: For 11435/11808 co-relation queries the response was YES. [2023-09-01 12:39:01,523 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. [2023-09-01 12:39:01,573 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 82 selfloop transitions, 2 changer transitions 0/129 dead transitions. [2023-09-01 12:39:01,573 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 129 transitions, 754 flow [2023-09-01 12:39:01,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 12:39:01,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 12:39:01,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2023-09-01 12:39:01,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5633986928104575 [2023-09-01 12:39:01,575 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2023-09-01 12:39:01,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2023-09-01 12:39:01,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:39:01,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2023-09-01 12:39:01,577 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) [2023-09-01 12:39:01,578 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) [2023-09-01 12:39:01,579 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) [2023-09-01 12:39:01,579 INFO L175 Difference]: Start difference. First operand has 84 places, 103 transitions, 470 flow. Second operand 3 states and 431 transitions. [2023-09-01 12:39:01,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 129 transitions, 754 flow [2023-09-01 12:39:01,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 129 transitions, 750 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 12:39:01,619 INFO L231 Difference]: Finished difference. Result has 85 places, 103 transitions, 476 flow [2023-09-01 12:39:01,620 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} [2023-09-01 12:39:01,620 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 26 predicate places. [2023-09-01 12:39:01,620 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 103 transitions, 476 flow [2023-09-01 12:39:01,621 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) [2023-09-01 12:39:01,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:39:01,621 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] [2023-09-01 12:39:01,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 12:39:01,622 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)] === [2023-09-01 12:39:01,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:39:01,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1824534595, now seen corresponding path program 6 times [2023-09-01 12:39:01,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:39:01,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202059513] [2023-09-01 12:39:01,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:39:01,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:39:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:39:01,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:39:01,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:39:01,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202059513] [2023-09-01 12:39:01,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202059513] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:39:01,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:39:01,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:39:01,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105895381] [2023-09-01 12:39:01,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:39:01,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:39:01,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:39:01,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:39:01,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:39:02,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-09-01 12:39:02,004 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) [2023-09-01 12:39:02,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:39:02,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-09-01 12:39:02,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:39:04,415 INFO L130 PetriNetUnfolder]: 18082/28043 cut-off events. [2023-09-01 12:39:04,416 INFO L131 PetriNetUnfolder]: For 22570/23192 co-relation queries the response was YES. [2023-09-01 12:39:04,517 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. [2023-09-01 12:39:04,600 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 262 selfloop transitions, 29 changer transitions 41/357 dead transitions. [2023-09-01 12:39:04,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 357 transitions, 2256 flow [2023-09-01 12:39:04,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 12:39:04,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 12:39:04,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1485 transitions. [2023-09-01 12:39:04,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2023-09-01 12:39:04,605 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1485 transitions. [2023-09-01 12:39:04,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1485 transitions. [2023-09-01 12:39:04,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:39:04,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1485 transitions. [2023-09-01 12:39:04,609 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) [2023-09-01 12:39:04,613 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) [2023-09-01 12:39:04,614 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) [2023-09-01 12:39:04,615 INFO L175 Difference]: Start difference. First operand has 85 places, 103 transitions, 476 flow. Second operand 11 states and 1485 transitions. [2023-09-01 12:39:04,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 357 transitions, 2256 flow [2023-09-01 12:39:04,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 357 transitions, 2252 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 12:39:04,679 INFO L231 Difference]: Finished difference. Result has 99 places, 128 transitions, 717 flow [2023-09-01 12:39:04,679 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} [2023-09-01 12:39:04,680 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 40 predicate places. [2023-09-01 12:39:04,680 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 128 transitions, 717 flow [2023-09-01 12:39:04,681 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) [2023-09-01 12:39:04,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:39:04,682 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] [2023-09-01 12:39:04,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 12:39:04,682 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)] === [2023-09-01 12:39:04,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:39:04,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1285316251, now seen corresponding path program 7 times [2023-09-01 12:39:04,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:39:04,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243821719] [2023-09-01 12:39:04,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:39:04,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:39:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:39:05,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:39:05,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:39:05,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243821719] [2023-09-01 12:39:05,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243821719] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:39:05,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:39:05,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 12:39:05,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675857819] [2023-09-01 12:39:05,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:39:05,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:39:05,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:39:05,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:39:05,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-09-01 12:39:05,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-09-01 12:39:05,316 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) [2023-09-01 12:39:05,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:39:05,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-09-01 12:39:05,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:39:07,295 INFO L130 PetriNetUnfolder]: 13508/24317 cut-off events. [2023-09-01 12:39:07,295 INFO L131 PetriNetUnfolder]: For 22777/23131 co-relation queries the response was YES. [2023-09-01 12:39:07,422 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. [2023-09-01 12:39:07,488 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 126 selfloop transitions, 28 changer transitions 0/209 dead transitions. [2023-09-01 12:39:07,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 209 transitions, 1375 flow [2023-09-01 12:39:07,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 12:39:07,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 12:39:07,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 919 transitions. [2023-09-01 12:39:07,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148459383753501 [2023-09-01 12:39:07,491 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 919 transitions. [2023-09-01 12:39:07,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 919 transitions. [2023-09-01 12:39:07,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:39:07,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 919 transitions. [2023-09-01 12:39:07,495 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) [2023-09-01 12:39:07,498 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) [2023-09-01 12:39:07,498 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) [2023-09-01 12:39:07,498 INFO L175 Difference]: Start difference. First operand has 99 places, 128 transitions, 717 flow. Second operand 7 states and 919 transitions. [2023-09-01 12:39:07,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 209 transitions, 1375 flow [2023-09-01 12:39:07,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 209 transitions, 1369 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-09-01 12:39:07,892 INFO L231 Difference]: Finished difference. Result has 107 places, 155 transitions, 970 flow [2023-09-01 12:39:07,892 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} [2023-09-01 12:39:07,893 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 48 predicate places. [2023-09-01 12:39:07,893 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 155 transitions, 970 flow [2023-09-01 12:39:07,893 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) [2023-09-01 12:39:07,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:39:07,894 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] [2023-09-01 12:39:07,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 12:39:07,895 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)] === [2023-09-01 12:39:07,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:39:07,895 INFO L85 PathProgramCache]: Analyzing trace with hash 148963389, now seen corresponding path program 8 times [2023-09-01 12:39:07,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:39:07,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474998428] [2023-09-01 12:39:07,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:39:07,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:39:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:39:08,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:39:08,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:39:08,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474998428] [2023-09-01 12:39:08,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474998428] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:39:08,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:39:08,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:39:08,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147942926] [2023-09-01 12:39:08,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:39:08,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:39:08,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:39:08,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:39:08,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:39:08,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-09-01 12:39:08,240 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) [2023-09-01 12:39:08,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:39:08,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-09-01 12:39:08,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:39:11,485 INFO L130 PetriNetUnfolder]: 22105/34134 cut-off events. [2023-09-01 12:39:11,485 INFO L131 PetriNetUnfolder]: For 48159/49735 co-relation queries the response was YES. [2023-09-01 12:39:11,622 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. [2023-09-01 12:39:11,710 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 256 selfloop transitions, 30 changer transitions 29/347 dead transitions. [2023-09-01 12:39:11,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 347 transitions, 2556 flow [2023-09-01 12:39:11,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 12:39:11,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 12:39:11,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1469 transitions. [2023-09-01 12:39:11,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5237076648841354 [2023-09-01 12:39:11,714 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1469 transitions. [2023-09-01 12:39:11,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1469 transitions. [2023-09-01 12:39:11,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:39:11,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1469 transitions. [2023-09-01 12:39:11,718 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) [2023-09-01 12:39:11,722 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) [2023-09-01 12:39:11,723 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) [2023-09-01 12:39:11,723 INFO L175 Difference]: Start difference. First operand has 107 places, 155 transitions, 970 flow. Second operand 11 states and 1469 transitions. [2023-09-01 12:39:11,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 347 transitions, 2556 flow [2023-09-01 12:39:12,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 347 transitions, 2554 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-09-01 12:39:12,282 INFO L231 Difference]: Finished difference. Result has 121 places, 160 transitions, 1093 flow [2023-09-01 12:39:12,282 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} [2023-09-01 12:39:12,283 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 62 predicate places. [2023-09-01 12:39:12,283 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 160 transitions, 1093 flow [2023-09-01 12:39:12,284 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) [2023-09-01 12:39:12,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:39:12,284 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] [2023-09-01 12:39:12,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 12:39:12,285 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)] === [2023-09-01 12:39:12,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:39:12,285 INFO L85 PathProgramCache]: Analyzing trace with hash -436772047, now seen corresponding path program 9 times [2023-09-01 12:39:12,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:39:12,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088266187] [2023-09-01 12:39:12,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:39:12,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:39:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:39:13,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:39:13,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:39:13,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088266187] [2023-09-01 12:39:13,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088266187] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:39:13,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:39:13,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:39:13,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018427723] [2023-09-01 12:39:13,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:39:13,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:39:13,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:39:13,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:39:13,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:39:13,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-09-01 12:39:13,089 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) [2023-09-01 12:39:13,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:39:13,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-09-01 12:39:13,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:39:16,340 INFO L130 PetriNetUnfolder]: 16971/30843 cut-off events. [2023-09-01 12:39:16,340 INFO L131 PetriNetUnfolder]: For 46509/47101 co-relation queries the response was YES. [2023-09-01 12:39:16,457 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. [2023-09-01 12:39:16,526 INFO L137 encePairwiseOnDemand]: 240/255 looper letters, 197 selfloop transitions, 72 changer transitions 0/327 dead transitions. [2023-09-01 12:39:16,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 327 transitions, 2486 flow [2023-09-01 12:39:16,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 12:39:16,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 12:39:16,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1452 transitions. [2023-09-01 12:39:16,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176470588235295 [2023-09-01 12:39:16,530 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1452 transitions. [2023-09-01 12:39:16,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1452 transitions. [2023-09-01 12:39:16,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:39:16,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1452 transitions. [2023-09-01 12:39:16,534 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) [2023-09-01 12:39:16,537 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) [2023-09-01 12:39:16,538 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) [2023-09-01 12:39:16,538 INFO L175 Difference]: Start difference. First operand has 121 places, 160 transitions, 1093 flow. Second operand 11 states and 1452 transitions. [2023-09-01 12:39:16,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 327 transitions, 2486 flow [2023-09-01 12:39:17,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 327 transitions, 2451 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-09-01 12:39:17,129 INFO L231 Difference]: Finished difference. Result has 134 places, 231 transitions, 1851 flow [2023-09-01 12:39:17,129 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} [2023-09-01 12:39:17,130 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 75 predicate places. [2023-09-01 12:39:17,131 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 231 transitions, 1851 flow [2023-09-01 12:39:17,131 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) [2023-09-01 12:39:17,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:39:17,131 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] [2023-09-01 12:39:17,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 12:39:17,132 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)] === [2023-09-01 12:39:17,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:39:17,132 INFO L85 PathProgramCache]: Analyzing trace with hash -857038051, now seen corresponding path program 10 times [2023-09-01 12:39:17,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:39:17,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732914939] [2023-09-01 12:39:17,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:39:17,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:39:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:39:17,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:39:17,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:39:17,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732914939] [2023-09-01 12:39:17,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732914939] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:39:17,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:39:17,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 12:39:17,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796850] [2023-09-01 12:39:17,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:39:17,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:39:17,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:39:17,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:39:17,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-09-01 12:39:17,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-09-01 12:39:17,701 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) [2023-09-01 12:39:17,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:39:17,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-09-01 12:39:17,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:39:21,235 INFO L130 PetriNetUnfolder]: 18451/34293 cut-off events. [2023-09-01 12:39:21,235 INFO L131 PetriNetUnfolder]: For 82494/84455 co-relation queries the response was YES. [2023-09-01 12:39:21,445 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. [2023-09-01 12:39:21,526 INFO L137 encePairwiseOnDemand]: 241/255 looper letters, 229 selfloop transitions, 72 changer transitions 3/367 dead transitions. [2023-09-01 12:39:21,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 367 transitions, 3267 flow [2023-09-01 12:39:21,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 12:39:21,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 12:39:21,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 962 transitions. [2023-09-01 12:39:21,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5389355742296918 [2023-09-01 12:39:21,529 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 962 transitions. [2023-09-01 12:39:21,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 962 transitions. [2023-09-01 12:39:21,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:39:21,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 962 transitions. [2023-09-01 12:39:21,532 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) [2023-09-01 12:39:21,534 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) [2023-09-01 12:39:21,535 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) [2023-09-01 12:39:21,535 INFO L175 Difference]: Start difference. First operand has 134 places, 231 transitions, 1851 flow. Second operand 7 states and 962 transitions. [2023-09-01 12:39:21,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 367 transitions, 3267 flow [2023-09-01 12:39:22,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 367 transitions, 3211 flow, removed 28 selfloop flow, removed 0 redundant places. [2023-09-01 12:39:22,199 INFO L231 Difference]: Finished difference. Result has 144 places, 252 transitions, 2266 flow [2023-09-01 12:39:22,200 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} [2023-09-01 12:39:22,200 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 85 predicate places. [2023-09-01 12:39:22,201 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 252 transitions, 2266 flow [2023-09-01 12:39:22,201 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) [2023-09-01 12:39:22,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:39:22,201 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] [2023-09-01 12:39:22,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 12:39:22,202 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)] === [2023-09-01 12:39:22,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:39:22,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1057114369, now seen corresponding path program 11 times [2023-09-01 12:39:22,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:39:22,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765081102] [2023-09-01 12:39:22,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:39:22,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:39:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:39:22,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:39:22,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:39:22,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765081102] [2023-09-01 12:39:22,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765081102] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:39:22,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:39:22,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:39:22,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807113328] [2023-09-01 12:39:22,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:39:22,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:39:22,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:39:22,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:39:22,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:39:22,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-09-01 12:39:22,557 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) [2023-09-01 12:39:22,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:39:22,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-09-01 12:39:22,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:39:28,433 INFO L130 PetriNetUnfolder]: 30033/48681 cut-off events. [2023-09-01 12:39:28,434 INFO L131 PetriNetUnfolder]: For 150267/152327 co-relation queries the response was YES. [2023-09-01 12:39:28,781 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. [2023-09-01 12:39:28,898 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 377 selfloop transitions, 32 changer transitions 61/533 dead transitions. [2023-09-01 12:39:28,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 533 transitions, 5194 flow [2023-09-01 12:39:28,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 12:39:28,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 12:39:28,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1481 transitions. [2023-09-01 12:39:28,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279857397504456 [2023-09-01 12:39:28,902 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1481 transitions. [2023-09-01 12:39:28,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1481 transitions. [2023-09-01 12:39:28,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:39:28,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1481 transitions. [2023-09-01 12:39:28,906 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) [2023-09-01 12:39:28,909 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) [2023-09-01 12:39:28,909 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) [2023-09-01 12:39:28,910 INFO L175 Difference]: Start difference. First operand has 144 places, 252 transitions, 2266 flow. Second operand 11 states and 1481 transitions. [2023-09-01 12:39:28,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 533 transitions, 5194 flow [2023-09-01 12:39:30,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 533 transitions, 5170 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-09-01 12:39:30,368 INFO L231 Difference]: Finished difference. Result has 158 places, 257 transitions, 2395 flow [2023-09-01 12:39:30,368 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} [2023-09-01 12:39:30,368 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 99 predicate places. [2023-09-01 12:39:30,368 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 257 transitions, 2395 flow [2023-09-01 12:39:30,369 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) [2023-09-01 12:39:30,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:39:30,369 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] [2023-09-01 12:39:30,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 12:39:30,369 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)] === [2023-09-01 12:39:30,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:39:30,369 INFO L85 PathProgramCache]: Analyzing trace with hash 287506541, now seen corresponding path program 12 times [2023-09-01 12:39:30,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:39:30,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478380028] [2023-09-01 12:39:30,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:39:30,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:39:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:39:30,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:39:30,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:39:30,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478380028] [2023-09-01 12:39:30,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478380028] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:39:30,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:39:30,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:39:30,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142375273] [2023-09-01 12:39:30,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:39:30,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:39:30,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:39:30,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:39:30,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:39:31,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-09-01 12:39:31,052 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) [2023-09-01 12:39:31,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:39:31,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-09-01 12:39:31,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:39:35,611 INFO L130 PetriNetUnfolder]: 20882/39316 cut-off events. [2023-09-01 12:39:35,612 INFO L131 PetriNetUnfolder]: For 134764/136909 co-relation queries the response was YES. [2023-09-01 12:39:35,991 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. [2023-09-01 12:39:36,099 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 277 selfloop transitions, 75 changer transitions 1/416 dead transitions. [2023-09-01 12:39:36,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 416 transitions, 4380 flow [2023-09-01 12:39:36,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 12:39:36,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 12:39:36,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 937 transitions. [2023-09-01 12:39:36,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5249299719887955 [2023-09-01 12:39:36,103 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 937 transitions. [2023-09-01 12:39:36,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 937 transitions. [2023-09-01 12:39:36,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:39:36,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 937 transitions. [2023-09-01 12:39:36,106 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) [2023-09-01 12:39:36,108 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) [2023-09-01 12:39:36,109 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) [2023-09-01 12:39:36,109 INFO L175 Difference]: Start difference. First operand has 158 places, 257 transitions, 2395 flow. Second operand 7 states and 937 transitions. [2023-09-01 12:39:36,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 416 transitions, 4380 flow [2023-09-01 12:39:37,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 416 transitions, 4341 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-09-01 12:39:37,555 INFO L231 Difference]: Finished difference. Result has 162 places, 298 transitions, 3043 flow [2023-09-01 12:39:37,556 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} [2023-09-01 12:39:37,556 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 103 predicate places. [2023-09-01 12:39:37,556 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 298 transitions, 3043 flow [2023-09-01 12:39:37,557 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) [2023-09-01 12:39:37,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:39:37,557 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] [2023-09-01 12:39:37,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 12:39:37,558 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)] === [2023-09-01 12:39:37,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:39:37,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1525849507, now seen corresponding path program 13 times [2023-09-01 12:39:37,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:39:37,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35120554] [2023-09-01 12:39:37,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:39:37,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:39:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:39:38,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:39:38,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:39:38,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35120554] [2023-09-01 12:39:38,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35120554] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:39:38,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:39:38,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:39:38,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351049769] [2023-09-01 12:39:38,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:39:38,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 12:39:38,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:39:38,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 12:39:38,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-09-01 12:39:38,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 255 [2023-09-01 12:39:38,058 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) [2023-09-01 12:39:38,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:39:38,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 255 [2023-09-01 12:39:38,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:39:43,621 INFO L130 PetriNetUnfolder]: 23740/45023 cut-off events. [2023-09-01 12:39:43,622 INFO L131 PetriNetUnfolder]: For 197890/201665 co-relation queries the response was YES. [2023-09-01 12:39:44,052 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. [2023-09-01 12:39:44,369 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 277 selfloop transitions, 51 changer transitions 36/472 dead transitions. [2023-09-01 12:39:44,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 472 transitions, 5045 flow [2023-09-01 12:39:44,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:39:44,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:39:44,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1239 transitions. [2023-09-01 12:39:44,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398692810457516 [2023-09-01 12:39:44,375 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1239 transitions. [2023-09-01 12:39:44,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1239 transitions. [2023-09-01 12:39:44,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:39:44,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1239 transitions. [2023-09-01 12:39:44,378 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) [2023-09-01 12:39:44,380 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) [2023-09-01 12:39:44,381 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) [2023-09-01 12:39:44,381 INFO L175 Difference]: Start difference. First operand has 162 places, 298 transitions, 3043 flow. Second operand 9 states and 1239 transitions. [2023-09-01 12:39:44,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 472 transitions, 5045 flow [2023-09-01 12:39:46,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 472 transitions, 5037 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-09-01 12:39:46,706 INFO L231 Difference]: Finished difference. Result has 174 places, 331 transitions, 3515 flow [2023-09-01 12:39:46,706 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} [2023-09-01 12:39:46,707 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 115 predicate places. [2023-09-01 12:39:46,707 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 331 transitions, 3515 flow [2023-09-01 12:39:46,708 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) [2023-09-01 12:39:46,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:39:46,708 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] [2023-09-01 12:39:46,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 12:39:46,708 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)] === [2023-09-01 12:39:46,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:39:46,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1720285273, now seen corresponding path program 14 times [2023-09-01 12:39:46,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:39:46,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47037243] [2023-09-01 12:39:46,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:39:46,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:39:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:39:47,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:39:47,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:39:47,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47037243] [2023-09-01 12:39:47,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47037243] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:39:47,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:39:47,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:39:47,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490868006] [2023-09-01 12:39:47,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:39:47,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 12:39:47,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:39:47,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 12:39:47,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-09-01 12:39:47,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 255 [2023-09-01 12:39:47,380 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) [2023-09-01 12:39:47,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:39:47,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 255 [2023-09-01 12:39:47,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:39:53,304 INFO L130 PetriNetUnfolder]: 23009/43744 cut-off events. [2023-09-01 12:39:53,305 INFO L131 PetriNetUnfolder]: For 234067/237646 co-relation queries the response was YES. [2023-09-01 12:39:53,747 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. [2023-09-01 12:39:53,862 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 231 selfloop transitions, 52 changer transitions 19/415 dead transitions. [2023-09-01 12:39:53,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 415 transitions, 4667 flow [2023-09-01 12:39:53,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:39:53,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:39:53,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1074 transitions. [2023-09-01 12:39:53,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5264705882352941 [2023-09-01 12:39:53,865 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1074 transitions. [2023-09-01 12:39:53,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1074 transitions. [2023-09-01 12:39:53,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:39:53,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1074 transitions. [2023-09-01 12:39:53,867 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) [2023-09-01 12:39:53,868 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) [2023-09-01 12:39:53,869 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) [2023-09-01 12:39:53,869 INFO L175 Difference]: Start difference. First operand has 174 places, 331 transitions, 3515 flow. Second operand 8 states and 1074 transitions. [2023-09-01 12:39:53,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 415 transitions, 4667 flow [2023-09-01 12:39:56,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 415 transitions, 4607 flow, removed 26 selfloop flow, removed 1 redundant places. [2023-09-01 12:39:56,249 INFO L231 Difference]: Finished difference. Result has 182 places, 350 transitions, 3829 flow [2023-09-01 12:39:56,249 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} [2023-09-01 12:39:56,250 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 123 predicate places. [2023-09-01 12:39:56,250 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 350 transitions, 3829 flow [2023-09-01 12:39:56,250 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) [2023-09-01 12:39:56,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:39:56,251 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] [2023-09-01 12:39:56,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 12:39:56,251 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)] === [2023-09-01 12:39:56,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:39:56,251 INFO L85 PathProgramCache]: Analyzing trace with hash -2020719651, now seen corresponding path program 15 times [2023-09-01 12:39:56,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:39:56,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305573041] [2023-09-01 12:39:56,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:39:56,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:39:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:39:56,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:39:56,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:39:56,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305573041] [2023-09-01 12:39:56,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305573041] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:39:56,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:39:56,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:39:56,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389389830] [2023-09-01 12:39:56,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:39:56,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:39:56,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:39:56,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:39:56,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:39:56,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-09-01 12:39:56,856 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) [2023-09-01 12:39:56,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:39:56,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-09-01 12:39:56,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:40:02,948 INFO L130 PetriNetUnfolder]: 23974/45149 cut-off events. [2023-09-01 12:40:02,948 INFO L131 PetriNetUnfolder]: For 264544/267858 co-relation queries the response was YES. [2023-09-01 12:40:03,363 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. [2023-09-01 12:40:03,474 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 303 selfloop transitions, 63 changer transitions 16/455 dead transitions. [2023-09-01 12:40:03,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 455 transitions, 5476 flow [2023-09-01 12:40:03,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:40:03,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:40:03,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1065 transitions. [2023-09-01 12:40:03,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5220588235294118 [2023-09-01 12:40:03,476 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1065 transitions. [2023-09-01 12:40:03,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1065 transitions. [2023-09-01 12:40:03,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:40:03,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1065 transitions. [2023-09-01 12:40:03,477 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) [2023-09-01 12:40:03,479 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) [2023-09-01 12:40:03,479 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) [2023-09-01 12:40:03,479 INFO L175 Difference]: Start difference. First operand has 182 places, 350 transitions, 3829 flow. Second operand 8 states and 1065 transitions. [2023-09-01 12:40:03,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 455 transitions, 5476 flow [2023-09-01 12:40:06,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 455 transitions, 5395 flow, removed 22 selfloop flow, removed 4 redundant places. [2023-09-01 12:40:06,143 INFO L231 Difference]: Finished difference. Result has 190 places, 371 transitions, 4312 flow [2023-09-01 12:40:06,143 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} [2023-09-01 12:40:06,143 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 131 predicate places. [2023-09-01 12:40:06,144 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 371 transitions, 4312 flow [2023-09-01 12:40:06,144 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) [2023-09-01 12:40:06,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:40:06,144 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] [2023-09-01 12:40:06,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 12:40:06,144 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)] === [2023-09-01 12:40:06,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:40:06,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1474309577, now seen corresponding path program 16 times [2023-09-01 12:40:06,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:40:06,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395076960] [2023-09-01 12:40:06,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:40:06,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:40:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:40:06,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:40:06,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:40:06,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395076960] [2023-09-01 12:40:06,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395076960] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:40:06,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:40:06,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-09-01 12:40:06,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448800942] [2023-09-01 12:40:06,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:40:06,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 12:40:06,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:40:06,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 12:40:06,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-09-01 12:40:06,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-09-01 12:40:06,915 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) [2023-09-01 12:40:06,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:40:06,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-09-01 12:40:06,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:40:15,364 INFO L130 PetriNetUnfolder]: 30014/56121 cut-off events. [2023-09-01 12:40:15,364 INFO L131 PetriNetUnfolder]: For 354166/357332 co-relation queries the response was YES. [2023-09-01 12:40:15,921 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. [2023-09-01 12:40:16,049 INFO L137 encePairwiseOnDemand]: 237/255 looper letters, 430 selfloop transitions, 282 changer transitions 61/836 dead transitions. [2023-09-01 12:40:16,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 836 transitions, 10311 flow [2023-09-01 12:40:16,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-09-01 12:40:16,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-09-01 12:40:16,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3071 transitions. [2023-09-01 12:40:16,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523614663256607 [2023-09-01 12:40:16,052 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3071 transitions. [2023-09-01 12:40:16,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3071 transitions. [2023-09-01 12:40:16,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:40:16,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3071 transitions. [2023-09-01 12:40:16,056 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) [2023-09-01 12:40:16,060 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) [2023-09-01 12:40:16,060 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) [2023-09-01 12:40:16,060 INFO L175 Difference]: Start difference. First operand has 190 places, 371 transitions, 4312 flow. Second operand 23 states and 3071 transitions. [2023-09-01 12:40:16,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 836 transitions, 10311 flow [2023-09-01 12:40:19,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 836 transitions, 10197 flow, removed 57 selfloop flow, removed 0 redundant places. [2023-09-01 12:40:19,513 INFO L231 Difference]: Finished difference. Result has 227 places, 498 transitions, 7082 flow [2023-09-01 12:40:19,513 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} [2023-09-01 12:40:19,514 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 168 predicate places. [2023-09-01 12:40:19,514 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 498 transitions, 7082 flow [2023-09-01 12:40:19,514 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) [2023-09-01 12:40:19,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:40:19,514 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] [2023-09-01 12:40:19,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 12:40:19,515 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)] === [2023-09-01 12:40:19,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:40:19,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1915283881, now seen corresponding path program 17 times [2023-09-01 12:40:19,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:40:19,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926671825] [2023-09-01 12:40:19,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:40:19,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:40:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:40:20,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:40:20,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:40:20,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926671825] [2023-09-01 12:40:20,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926671825] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:40:20,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:40:20,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:40:20,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095568943] [2023-09-01 12:40:20,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:40:20,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:40:20,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:40:20,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:40:20,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:40:20,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 255 [2023-09-01 12:40:20,313 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) [2023-09-01 12:40:20,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:40:20,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 255 [2023-09-01 12:40:20,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:40:29,393 INFO L130 PetriNetUnfolder]: 27575/52232 cut-off events. [2023-09-01 12:40:29,393 INFO L131 PetriNetUnfolder]: For 643836/649224 co-relation queries the response was YES. [2023-09-01 12:40:30,058 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. [2023-09-01 12:40:30,193 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 346 selfloop transitions, 74 changer transitions 43/596 dead transitions. [2023-09-01 12:40:30,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 596 transitions, 9055 flow [2023-09-01 12:40:30,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:40:30,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:40:30,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1199 transitions. [2023-09-01 12:40:30,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224400871459695 [2023-09-01 12:40:30,195 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1199 transitions. [2023-09-01 12:40:30,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1199 transitions. [2023-09-01 12:40:30,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:40:30,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1199 transitions. [2023-09-01 12:40:30,197 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) [2023-09-01 12:40:30,198 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) [2023-09-01 12:40:30,198 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) [2023-09-01 12:40:30,198 INFO L175 Difference]: Start difference. First operand has 227 places, 498 transitions, 7082 flow. Second operand 9 states and 1199 transitions. [2023-09-01 12:40:30,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 596 transitions, 9055 flow [2023-09-01 12:40:36,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 596 transitions, 8567 flow, removed 240 selfloop flow, removed 2 redundant places. [2023-09-01 12:40:36,821 INFO L231 Difference]: Finished difference. Result has 235 places, 502 transitions, 6922 flow [2023-09-01 12:40:36,822 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} [2023-09-01 12:40:36,822 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 176 predicate places. [2023-09-01 12:40:36,822 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 502 transitions, 6922 flow [2023-09-01 12:40:36,823 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) [2023-09-01 12:40:36,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:40:36,823 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] [2023-09-01 12:40:36,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-09-01 12:40:36,823 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)] === [2023-09-01 12:40:36,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:40:36,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1554493685, now seen corresponding path program 18 times [2023-09-01 12:40:36,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:40:36,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486828823] [2023-09-01 12:40:36,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:40:36,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:40:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:40:37,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:40:37,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:40:37,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486828823] [2023-09-01 12:40:37,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486828823] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:40:37,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:40:37,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 12:40:37,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486819097] [2023-09-01 12:40:37,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:40:37,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 12:40:37,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:40:37,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 12:40:37,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-09-01 12:40:37,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-09-01 12:40:37,544 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) [2023-09-01 12:40:37,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:40:37,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-09-01 12:40:37,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:40:48,035 INFO L130 PetriNetUnfolder]: 31294/58066 cut-off events. [2023-09-01 12:40:48,035 INFO L131 PetriNetUnfolder]: For 651937/656847 co-relation queries the response was YES. [2023-09-01 12:40:48,863 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. [2023-09-01 12:40:49,017 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 436 selfloop transitions, 80 changer transitions 60/639 dead transitions. [2023-09-01 12:40:49,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 639 transitions, 9533 flow [2023-09-01 12:40:49,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:40:49,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:40:49,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1201 transitions. [2023-09-01 12:40:49,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5233115468409586 [2023-09-01 12:40:49,019 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1201 transitions. [2023-09-01 12:40:49,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1201 transitions. [2023-09-01 12:40:49,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:40:49,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1201 transitions. [2023-09-01 12:40:49,021 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) [2023-09-01 12:40:49,022 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) [2023-09-01 12:40:49,023 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) [2023-09-01 12:40:49,023 INFO L175 Difference]: Start difference. First operand has 235 places, 502 transitions, 6922 flow. Second operand 9 states and 1201 transitions. [2023-09-01 12:40:49,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 639 transitions, 9533 flow [2023-09-01 12:40:55,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 639 transitions, 9386 flow, removed 12 selfloop flow, removed 7 redundant places. [2023-09-01 12:40:55,692 INFO L231 Difference]: Finished difference. Result has 237 places, 497 transitions, 6942 flow [2023-09-01 12:40:55,693 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} [2023-09-01 12:40:55,693 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 178 predicate places. [2023-09-01 12:40:55,693 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 497 transitions, 6942 flow [2023-09-01 12:40:55,694 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) [2023-09-01 12:40:55,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:40:55,694 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] [2023-09-01 12:40:55,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-09-01 12:40:55,694 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)] === [2023-09-01 12:40:55,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:40:55,695 INFO L85 PathProgramCache]: Analyzing trace with hash -879633153, now seen corresponding path program 19 times [2023-09-01 12:40:55,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:40:55,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623122788] [2023-09-01 12:40:55,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:40:55,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:40:55,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:40:56,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:40:56,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:40:56,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623122788] [2023-09-01 12:40:56,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623122788] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:40:56,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:40:56,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:40:56,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263085856] [2023-09-01 12:40:56,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:40:56,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 12:40:56,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:40:56,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 12:40:56,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 12:40:56,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 255 [2023-09-01 12:40:56,493 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) [2023-09-01 12:40:56,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:40:56,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 255 [2023-09-01 12:40:56,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:41:05,546 INFO L130 PetriNetUnfolder]: 26739/49928 cut-off events. [2023-09-01 12:41:05,546 INFO L131 PetriNetUnfolder]: For 588614/592093 co-relation queries the response was YES. [2023-09-01 12:41:06,634 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. [2023-09-01 12:41:06,848 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 353 selfloop transitions, 69 changer transitions 36/575 dead transitions. [2023-09-01 12:41:06,849 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 575 transitions, 8582 flow [2023-09-01 12:41:06,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:41:06,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:41:06,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1074 transitions. [2023-09-01 12:41:06,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5264705882352941 [2023-09-01 12:41:06,851 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1074 transitions. [2023-09-01 12:41:06,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1074 transitions. [2023-09-01 12:41:06,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:41:06,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1074 transitions. [2023-09-01 12:41:06,853 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) [2023-09-01 12:41:06,855 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) [2023-09-01 12:41:06,855 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) [2023-09-01 12:41:06,855 INFO L175 Difference]: Start difference. First operand has 237 places, 497 transitions, 6942 flow. Second operand 8 states and 1074 transitions. [2023-09-01 12:41:06,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 575 transitions, 8582 flow [2023-09-01 12:41:12,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 575 transitions, 8350 flow, removed 43 selfloop flow, removed 10 redundant places. [2023-09-01 12:41:12,705 INFO L231 Difference]: Finished difference. Result has 234 places, 474 transitions, 6689 flow [2023-09-01 12:41:12,705 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} [2023-09-01 12:41:12,705 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 175 predicate places. [2023-09-01 12:41:12,706 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 474 transitions, 6689 flow [2023-09-01 12:41:12,706 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) [2023-09-01 12:41:12,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:41:12,706 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] [2023-09-01 12:41:12,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-09-01 12:41:12,706 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)] === [2023-09-01 12:41:12,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:41:12,707 INFO L85 PathProgramCache]: Analyzing trace with hash 491426649, now seen corresponding path program 20 times [2023-09-01 12:41:12,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:41:12,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263392604] [2023-09-01 12:41:12,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:41:12,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:41:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:41:13,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:41:13,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:41:13,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263392604] [2023-09-01 12:41:13,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263392604] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:41:13,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:41:13,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 12:41:13,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827530348] [2023-09-01 12:41:13,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:41:13,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 12:41:13,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:41:13,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 12:41:13,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 12:41:13,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 255 [2023-09-01 12:41:13,277 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) [2023-09-01 12:41:13,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:41:13,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 255 [2023-09-01 12:41:13,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:41:22,505 INFO L130 PetriNetUnfolder]: 28993/53959 cut-off events. [2023-09-01 12:41:22,506 INFO L131 PetriNetUnfolder]: For 624790/628833 co-relation queries the response was YES. [2023-09-01 12:41:23,281 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. [2023-09-01 12:41:23,676 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 392 selfloop transitions, 37 changer transitions 12/548 dead transitions. [2023-09-01 12:41:23,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 548 transitions, 8211 flow [2023-09-01 12:41:23,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 12:41:23,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 12:41:23,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 824 transitions. [2023-09-01 12:41:23,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.538562091503268 [2023-09-01 12:41:23,678 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 824 transitions. [2023-09-01 12:41:23,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 824 transitions. [2023-09-01 12:41:23,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:41:23,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 824 transitions. [2023-09-01 12:41:23,680 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) [2023-09-01 12:41:23,681 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) [2023-09-01 12:41:23,682 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) [2023-09-01 12:41:23,682 INFO L175 Difference]: Start difference. First operand has 234 places, 474 transitions, 6689 flow. Second operand 6 states and 824 transitions. [2023-09-01 12:41:23,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 548 transitions, 8211 flow [2023-09-01 12:41:29,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 548 transitions, 8035 flow, removed 38 selfloop flow, removed 8 redundant places. [2023-09-01 12:41:29,554 INFO L231 Difference]: Finished difference. Result has 233 places, 478 transitions, 6672 flow [2023-09-01 12:41:29,554 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} [2023-09-01 12:41:29,554 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 174 predicate places. [2023-09-01 12:41:29,554 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 478 transitions, 6672 flow [2023-09-01 12:41:29,555 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) [2023-09-01 12:41:29,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:41:29,555 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] [2023-09-01 12:41:29,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-09-01 12:41:29,555 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)] === [2023-09-01 12:41:29,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:41:29,556 INFO L85 PathProgramCache]: Analyzing trace with hash -660534051, now seen corresponding path program 21 times [2023-09-01 12:41:29,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:41:29,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479008848] [2023-09-01 12:41:29,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:41:29,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:41:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:41:30,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:41:30,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:41:30,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479008848] [2023-09-01 12:41:30,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479008848] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:41:30,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:41:30,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:41:30,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961474290] [2023-09-01 12:41:30,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:41:30,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:41:30,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:41:30,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:41:30,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:41:30,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-09-01 12:41:30,110 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) [2023-09-01 12:41:30,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:41:30,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-09-01 12:41:30,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:41:40,434 INFO L130 PetriNetUnfolder]: 32242/58106 cut-off events. [2023-09-01 12:41:40,434 INFO L131 PetriNetUnfolder]: For 647598/650699 co-relation queries the response was YES. [2023-09-01 12:41:41,248 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. [2023-09-01 12:41:41,404 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 426 selfloop transitions, 191 changer transitions 5/670 dead transitions. [2023-09-01 12:41:41,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 670 transitions, 10100 flow [2023-09-01 12:41:41,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 12:41:41,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 12:41:41,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1445 transitions. [2023-09-01 12:41:41,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2023-09-01 12:41:41,405 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1445 transitions. [2023-09-01 12:41:41,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1445 transitions. [2023-09-01 12:41:41,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:41:41,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1445 transitions. [2023-09-01 12:41:41,407 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) [2023-09-01 12:41:41,409 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) [2023-09-01 12:41:41,409 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) [2023-09-01 12:41:41,409 INFO L175 Difference]: Start difference. First operand has 233 places, 478 transitions, 6672 flow. Second operand 11 states and 1445 transitions. [2023-09-01 12:41:41,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 670 transitions, 10100 flow [2023-09-01 12:41:46,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 670 transitions, 9975 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-09-01 12:41:46,780 INFO L231 Difference]: Finished difference. Result has 244 places, 550 transitions, 8352 flow [2023-09-01 12:41:46,781 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} [2023-09-01 12:41:46,781 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 185 predicate places. [2023-09-01 12:41:46,781 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 550 transitions, 8352 flow [2023-09-01 12:41:46,781 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) [2023-09-01 12:41:46,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:41:46,782 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] [2023-09-01 12:41:46,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-09-01 12:41:46,782 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)] === [2023-09-01 12:41:46,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:41:46,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1273824217, now seen corresponding path program 22 times [2023-09-01 12:41:46,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:41:46,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338989490] [2023-09-01 12:41:46,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:41:46,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:41:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:41:46,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:41:46,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:41:46,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338989490] [2023-09-01 12:41:46,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338989490] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:41:46,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:41:46,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:41:46,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075163689] [2023-09-01 12:41:46,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:41:46,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:41:46,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:41:46,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:41:46,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:41:47,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-09-01 12:41:47,058 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) [2023-09-01 12:41:47,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:41:47,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-09-01 12:41:47,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:42:01,888 INFO L130 PetriNetUnfolder]: 47820/76858 cut-off events. [2023-09-01 12:42:01,888 INFO L131 PetriNetUnfolder]: For 1026218/1031234 co-relation queries the response was YES. [2023-09-01 12:42:03,026 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. [2023-09-01 12:42:03,232 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 707 selfloop transitions, 18 changer transitions 188/1034 dead transitions. [2023-09-01 12:42:03,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 1034 transitions, 17336 flow [2023-09-01 12:42:03,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 12:42:03,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 12:42:03,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1471 transitions. [2023-09-01 12:42:03,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244206773618538 [2023-09-01 12:42:03,234 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1471 transitions. [2023-09-01 12:42:03,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1471 transitions. [2023-09-01 12:42:03,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:42:03,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1471 transitions. [2023-09-01 12:42:03,236 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) [2023-09-01 12:42:03,237 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) [2023-09-01 12:42:03,238 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) [2023-09-01 12:42:03,238 INFO L175 Difference]: Start difference. First operand has 244 places, 550 transitions, 8352 flow. Second operand 11 states and 1471 transitions. [2023-09-01 12:42:03,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 1034 transitions, 17336 flow [2023-09-01 12:42:14,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 1034 transitions, 16562 flow, removed 372 selfloop flow, removed 2 redundant places. [2023-09-01 12:42:14,405 INFO L231 Difference]: Finished difference. Result has 255 places, 557 transitions, 8235 flow [2023-09-01 12:42:14,405 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} [2023-09-01 12:42:14,406 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 196 predicate places. [2023-09-01 12:42:14,406 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 557 transitions, 8235 flow [2023-09-01 12:42:14,406 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) [2023-09-01 12:42:14,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:42:14,407 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] [2023-09-01 12:42:14,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-09-01 12:42:14,407 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)] === [2023-09-01 12:42:14,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:42:14,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1879734009, now seen corresponding path program 23 times [2023-09-01 12:42:14,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:42:14,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450127052] [2023-09-01 12:42:14,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:42:14,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:42:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:42:14,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:42:14,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:42:14,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450127052] [2023-09-01 12:42:14,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450127052] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:42:14,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:42:14,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:42:14,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012918668] [2023-09-01 12:42:14,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:42:14,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 12:42:14,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:42:14,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 12:42:14,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-09-01 12:42:14,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 255 [2023-09-01 12:42:14,951 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) [2023-09-01 12:42:14,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:42:14,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 255 [2023-09-01 12:42:14,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:42:23,562 INFO L130 PetriNetUnfolder]: 23778/43969 cut-off events. [2023-09-01 12:42:23,562 INFO L131 PetriNetUnfolder]: For 594926/598357 co-relation queries the response was YES. [2023-09-01 12:42:24,246 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. [2023-09-01 12:42:24,357 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 360 selfloop transitions, 49 changer transitions 51/565 dead transitions. [2023-09-01 12:42:24,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 565 transitions, 8981 flow [2023-09-01 12:42:24,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 12:42:24,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 12:42:24,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 803 transitions. [2023-09-01 12:42:24,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5248366013071896 [2023-09-01 12:42:24,358 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 803 transitions. [2023-09-01 12:42:24,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 803 transitions. [2023-09-01 12:42:24,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:42:24,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 803 transitions. [2023-09-01 12:42:24,359 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) [2023-09-01 12:42:24,360 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) [2023-09-01 12:42:24,360 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) [2023-09-01 12:42:24,360 INFO L175 Difference]: Start difference. First operand has 255 places, 557 transitions, 8235 flow. Second operand 6 states and 803 transitions. [2023-09-01 12:42:24,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 565 transitions, 8981 flow [2023-09-01 12:42:28,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 565 transitions, 8887 flow, removed 29 selfloop flow, removed 7 redundant places. [2023-09-01 12:42:28,247 INFO L231 Difference]: Finished difference. Result has 252 places, 480 transitions, 7041 flow [2023-09-01 12:42:28,247 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} [2023-09-01 12:42:28,248 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 193 predicate places. [2023-09-01 12:42:28,248 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 480 transitions, 7041 flow [2023-09-01 12:42:28,248 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) [2023-09-01 12:42:28,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:42:28,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:42:28,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-09-01 12:42:28,249 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)] === [2023-09-01 12:42:28,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:42:28,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1941805959, now seen corresponding path program 24 times [2023-09-01 12:42:28,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:42:28,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750565966] [2023-09-01 12:42:28,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:42:28,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:42:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:42:28,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:42:28,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:42:28,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750565966] [2023-09-01 12:42:28,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750565966] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:42:28,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:42:28,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 12:42:28,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197423544] [2023-09-01 12:42:28,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:42:28,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:42:28,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:42:28,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:42:28,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-09-01 12:42:28,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 255 [2023-09-01 12:42:28,716 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) [2023-09-01 12:42:28,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:42:28,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 255 [2023-09-01 12:42:28,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:42:35,382 INFO L130 PetriNetUnfolder]: 19824/36501 cut-off events. [2023-09-01 12:42:35,382 INFO L131 PetriNetUnfolder]: For 524532/527921 co-relation queries the response was YES. [2023-09-01 12:42:35,925 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. [2023-09-01 12:42:36,032 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 330 selfloop transitions, 58 changer transitions 43/545 dead transitions. [2023-09-01 12:42:36,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 545 transitions, 8586 flow [2023-09-01 12:42:36,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 12:42:36,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 12:42:36,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 806 transitions. [2023-09-01 12:42:36,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526797385620915 [2023-09-01 12:42:36,033 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 806 transitions. [2023-09-01 12:42:36,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 806 transitions. [2023-09-01 12:42:36,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:42:36,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 806 transitions. [2023-09-01 12:42:36,035 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) [2023-09-01 12:42:36,036 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) [2023-09-01 12:42:36,036 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) [2023-09-01 12:42:36,036 INFO L175 Difference]: Start difference. First operand has 252 places, 480 transitions, 7041 flow. Second operand 6 states and 806 transitions. [2023-09-01 12:42:36,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 545 transitions, 8586 flow [2023-09-01 12:42:39,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 545 transitions, 8415 flow, removed 51 selfloop flow, removed 7 redundant places. [2023-09-01 12:42:39,234 INFO L231 Difference]: Finished difference. Result has 251 places, 467 transitions, 6817 flow [2023-09-01 12:42:39,234 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} [2023-09-01 12:42:39,235 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 192 predicate places. [2023-09-01 12:42:39,235 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 467 transitions, 6817 flow [2023-09-01 12:42:39,235 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) [2023-09-01 12:42:39,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:42:39,236 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] [2023-09-01 12:42:39,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-09-01 12:42:39,236 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)] === [2023-09-01 12:42:39,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:42:39,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1032380713, now seen corresponding path program 25 times [2023-09-01 12:42:39,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:42:39,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654864568] [2023-09-01 12:42:39,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:42:39,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:42:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:42:39,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:42:39,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:42:39,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654864568] [2023-09-01 12:42:39,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654864568] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:42:39,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:42:39,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:42:39,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454150689] [2023-09-01 12:42:39,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:42:39,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 12:42:39,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:42:39,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 12:42:39,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-09-01 12:42:39,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-09-01 12:42:39,653 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) [2023-09-01 12:42:39,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:42:39,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-09-01 12:42:39,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:42:47,404 INFO L130 PetriNetUnfolder]: 22742/41314 cut-off events. [2023-09-01 12:42:47,404 INFO L131 PetriNetUnfolder]: For 523775/525829 co-relation queries the response was YES. [2023-09-01 12:42:47,991 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. [2023-09-01 12:42:48,100 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 440 selfloop transitions, 145 changer transitions 30/676 dead transitions. [2023-09-01 12:42:48,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 676 transitions, 10312 flow [2023-09-01 12:42:48,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 12:42:48,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 12:42:48,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1595 transitions. [2023-09-01 12:42:48,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212418300653595 [2023-09-01 12:42:48,102 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1595 transitions. [2023-09-01 12:42:48,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1595 transitions. [2023-09-01 12:42:48,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:42:48,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1595 transitions. [2023-09-01 12:42:48,103 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) [2023-09-01 12:42:48,105 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) [2023-09-01 12:42:48,106 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) [2023-09-01 12:42:48,106 INFO L175 Difference]: Start difference. First operand has 251 places, 467 transitions, 6817 flow. Second operand 12 states and 1595 transitions. [2023-09-01 12:42:48,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 676 transitions, 10312 flow [2023-09-01 12:42:51,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 676 transitions, 10133 flow, removed 38 selfloop flow, removed 4 redundant places. [2023-09-01 12:42:51,509 INFO L231 Difference]: Finished difference. Result has 268 places, 501 transitions, 7726 flow [2023-09-01 12:42:51,510 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} [2023-09-01 12:42:51,510 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 209 predicate places. [2023-09-01 12:42:51,510 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 501 transitions, 7726 flow [2023-09-01 12:42:51,510 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) [2023-09-01 12:42:51,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:42:51,511 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] [2023-09-01 12:42:51,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-09-01 12:42:51,511 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)] === [2023-09-01 12:42:51,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:42:51,512 INFO L85 PathProgramCache]: Analyzing trace with hash 286183781, now seen corresponding path program 26 times [2023-09-01 12:42:51,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:42:51,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128181142] [2023-09-01 12:42:51,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:42:51,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:42:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:42:52,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:42:52,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:42:52,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128181142] [2023-09-01 12:42:52,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128181142] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:42:52,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:42:52,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:42:52,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795073589] [2023-09-01 12:42:52,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:42:52,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 12:42:52,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:42:52,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 12:42:52,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 12:42:52,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-09-01 12:42:52,182 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) [2023-09-01 12:42:52,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:42:52,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-09-01 12:42:52,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:43:00,051 INFO L130 PetriNetUnfolder]: 21776/39939 cut-off events. [2023-09-01 12:43:00,051 INFO L131 PetriNetUnfolder]: For 604260/606766 co-relation queries the response was YES. [2023-09-01 12:43:00,632 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. [2023-09-01 12:43:00,744 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 411 selfloop transitions, 11 changer transitions 26/536 dead transitions. [2023-09-01 12:43:00,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 536 transitions, 8833 flow [2023-09-01 12:43:00,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 12:43:00,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 12:43:00,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 909 transitions. [2023-09-01 12:43:00,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092436974789916 [2023-09-01 12:43:00,746 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 909 transitions. [2023-09-01 12:43:00,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 909 transitions. [2023-09-01 12:43:00,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:43:00,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 909 transitions. [2023-09-01 12:43:00,747 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) [2023-09-01 12:43:00,748 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) [2023-09-01 12:43:00,748 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) [2023-09-01 12:43:00,748 INFO L175 Difference]: Start difference. First operand has 268 places, 501 transitions, 7726 flow. Second operand 7 states and 909 transitions. [2023-09-01 12:43:00,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 536 transitions, 8833 flow [2023-09-01 12:43:05,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 536 transitions, 8615 flow, removed 95 selfloop flow, removed 2 redundant places. [2023-09-01 12:43:05,063 INFO L231 Difference]: Finished difference. Result has 274 places, 491 transitions, 7326 flow [2023-09-01 12:43:05,064 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} [2023-09-01 12:43:05,065 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 215 predicate places. [2023-09-01 12:43:05,065 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 491 transitions, 7326 flow [2023-09-01 12:43:05,065 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) [2023-09-01 12:43:05,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:43:05,065 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] [2023-09-01 12:43:05,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-09-01 12:43:05,066 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)] === [2023-09-01 12:43:05,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:43:05,066 INFO L85 PathProgramCache]: Analyzing trace with hash 240171811, now seen corresponding path program 27 times [2023-09-01 12:43:05,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:43:05,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141911241] [2023-09-01 12:43:05,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:43:05,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:43:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:43:05,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:43:05,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:43:05,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141911241] [2023-09-01 12:43:05,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141911241] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:43:05,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:43:05,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 12:43:05,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575268063] [2023-09-01 12:43:05,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:43:05,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 12:43:05,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:43:05,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 12:43:05,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-09-01 12:43:05,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-09-01 12:43:05,613 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) [2023-09-01 12:43:05,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:43:05,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-09-01 12:43:05,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:43:14,451 INFO L130 PetriNetUnfolder]: 22706/41326 cut-off events. [2023-09-01 12:43:14,451 INFO L131 PetriNetUnfolder]: For 626734/628473 co-relation queries the response was YES. [2023-09-01 12:43:15,144 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. [2023-09-01 12:43:15,258 INFO L137 encePairwiseOnDemand]: 242/255 looper letters, 471 selfloop transitions, 134 changer transitions 61/718 dead transitions. [2023-09-01 12:43:15,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 718 transitions, 11333 flow [2023-09-01 12:43:15,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 12:43:15,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 12:43:15,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1357 transitions. [2023-09-01 12:43:15,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532156862745098 [2023-09-01 12:43:15,259 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1357 transitions. [2023-09-01 12:43:15,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1357 transitions. [2023-09-01 12:43:15,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:43:15,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1357 transitions. [2023-09-01 12:43:15,261 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) [2023-09-01 12:43:15,262 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) [2023-09-01 12:43:15,262 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) [2023-09-01 12:43:15,262 INFO L175 Difference]: Start difference. First operand has 274 places, 491 transitions, 7326 flow. Second operand 10 states and 1357 transitions. [2023-09-01 12:43:15,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 718 transitions, 11333 flow [2023-09-01 12:43:19,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 718 transitions, 11217 flow, removed 27 selfloop flow, removed 7 redundant places. [2023-09-01 12:43:19,569 INFO L231 Difference]: Finished difference. Result has 282 places, 516 transitions, 8227 flow [2023-09-01 12:43:19,570 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} [2023-09-01 12:43:19,570 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 223 predicate places. [2023-09-01 12:43:19,570 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 516 transitions, 8227 flow [2023-09-01 12:43:19,571 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) [2023-09-01 12:43:19,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:43:19,571 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] [2023-09-01 12:43:19,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-09-01 12:43:19,571 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)] === [2023-09-01 12:43:19,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:43:19,572 INFO L85 PathProgramCache]: Analyzing trace with hash 600631959, now seen corresponding path program 28 times [2023-09-01 12:43:19,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:43:19,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700779666] [2023-09-01 12:43:19,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:43:19,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:43:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:43:19,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:43:19,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:43:19,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700779666] [2023-09-01 12:43:19,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700779666] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:43:19,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:43:19,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:43:19,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504755465] [2023-09-01 12:43:19,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:43:19,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:43:19,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:43:19,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:43:19,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:43:20,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-09-01 12:43:20,015 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) [2023-09-01 12:43:20,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:43:20,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-09-01 12:43:20,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:43:29,648 INFO L130 PetriNetUnfolder]: 23786/44164 cut-off events. [2023-09-01 12:43:29,648 INFO L131 PetriNetUnfolder]: For 745477/748387 co-relation queries the response was YES. [2023-09-01 12:43:30,486 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. [2023-09-01 12:43:30,601 INFO L137 encePairwiseOnDemand]: 241/255 looper letters, 463 selfloop transitions, 140 changer transitions 48/703 dead transitions. [2023-09-01 12:43:30,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 703 transitions, 12000 flow [2023-09-01 12:43:30,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 12:43:30,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 12:43:30,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1551 transitions. [2023-09-01 12:43:30,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5068627450980392 [2023-09-01 12:43:30,604 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1551 transitions. [2023-09-01 12:43:30,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1551 transitions. [2023-09-01 12:43:30,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:43:30,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1551 transitions. [2023-09-01 12:43:30,605 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) [2023-09-01 12:43:30,607 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) [2023-09-01 12:43:30,607 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) [2023-09-01 12:43:30,607 INFO L175 Difference]: Start difference. First operand has 282 places, 516 transitions, 8227 flow. Second operand 12 states and 1551 transitions. [2023-09-01 12:43:30,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 703 transitions, 12000 flow [2023-09-01 12:43:36,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 703 transitions, 11795 flow, removed 94 selfloop flow, removed 5 redundant places. [2023-09-01 12:43:36,597 INFO L231 Difference]: Finished difference. Result has 296 places, 577 transitions, 9773 flow [2023-09-01 12:43:36,598 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} [2023-09-01 12:43:36,598 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 237 predicate places. [2023-09-01 12:43:36,598 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 577 transitions, 9773 flow [2023-09-01 12:43:36,599 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) [2023-09-01 12:43:36,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:43:36,599 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] [2023-09-01 12:43:36,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-09-01 12:43:36,599 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)] === [2023-09-01 12:43:36,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:43:36,600 INFO L85 PathProgramCache]: Analyzing trace with hash -580430581, now seen corresponding path program 29 times [2023-09-01 12:43:36,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:43:36,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832738125] [2023-09-01 12:43:36,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:43:36,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:43:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:43:36,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:43:36,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:43:36,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832738125] [2023-09-01 12:43:36,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832738125] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:43:36,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:43:36,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:43:36,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669747812] [2023-09-01 12:43:36,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:43:36,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:43:36,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:43:36,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:43:36,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:43:37,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-09-01 12:43:37,033 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) [2023-09-01 12:43:37,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:43:37,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-09-01 12:43:37,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:43:46,475 INFO L130 PetriNetUnfolder]: 22735/42312 cut-off events. [2023-09-01 12:43:46,475 INFO L131 PetriNetUnfolder]: For 718692/721859 co-relation queries the response was YES. [2023-09-01 12:43:47,324 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. [2023-09-01 12:43:47,441 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 498 selfloop transitions, 21 changer transitions 54/639 dead transitions. [2023-09-01 12:43:47,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 639 transitions, 11465 flow [2023-09-01 12:43:47,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:43:47,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:43:47,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1160 transitions. [2023-09-01 12:43:47,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054466230936819 [2023-09-01 12:43:47,443 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1160 transitions. [2023-09-01 12:43:47,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1160 transitions. [2023-09-01 12:43:47,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:43:47,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1160 transitions. [2023-09-01 12:43:47,446 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) [2023-09-01 12:43:47,447 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) [2023-09-01 12:43:47,448 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) [2023-09-01 12:43:47,448 INFO L175 Difference]: Start difference. First operand has 296 places, 577 transitions, 9773 flow. Second operand 9 states and 1160 transitions. [2023-09-01 12:43:47,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 639 transitions, 11465 flow [2023-09-01 12:43:53,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 639 transitions, 11326 flow, removed 63 selfloop flow, removed 5 redundant places. [2023-09-01 12:43:53,642 INFO L231 Difference]: Finished difference. Result has 301 places, 557 transitions, 9351 flow [2023-09-01 12:43:53,642 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} [2023-09-01 12:43:53,643 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 242 predicate places. [2023-09-01 12:43:53,643 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 557 transitions, 9351 flow [2023-09-01 12:43:53,643 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) [2023-09-01 12:43:53,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:43:53,644 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] [2023-09-01 12:43:53,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-09-01 12:43:53,644 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)] === [2023-09-01 12:43:53,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:43:53,644 INFO L85 PathProgramCache]: Analyzing trace with hash 584727243, now seen corresponding path program 30 times [2023-09-01 12:43:53,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:43:53,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143618744] [2023-09-01 12:43:53,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:43:53,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:43:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:43:53,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:43:53,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:43:53,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143618744] [2023-09-01 12:43:53,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143618744] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:43:53,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:43:53,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:43:53,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805723523] [2023-09-01 12:43:53,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:43:53,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 12:43:53,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:43:53,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 12:43:53,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-09-01 12:43:54,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-09-01 12:43:54,037 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) [2023-09-01 12:43:54,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:43:54,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-09-01 12:43:54,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:44:02,912 INFO L130 PetriNetUnfolder]: 21218/39841 cut-off events. [2023-09-01 12:44:02,912 INFO L131 PetriNetUnfolder]: For 679844/682618 co-relation queries the response was YES. [2023-09-01 12:44:03,824 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. [2023-09-01 12:44:03,946 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 435 selfloop transitions, 26 changer transitions 37/619 dead transitions. [2023-09-01 12:44:03,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 619 transitions, 10929 flow [2023-09-01 12:44:03,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:44:03,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:44:03,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1055 transitions. [2023-09-01 12:44:03,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171568627450981 [2023-09-01 12:44:03,948 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1055 transitions. [2023-09-01 12:44:03,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1055 transitions. [2023-09-01 12:44:03,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:44:03,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1055 transitions. [2023-09-01 12:44:03,950 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) [2023-09-01 12:44:03,952 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) [2023-09-01 12:44:03,952 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) [2023-09-01 12:44:03,952 INFO L175 Difference]: Start difference. First operand has 301 places, 557 transitions, 9351 flow. Second operand 8 states and 1055 transitions. [2023-09-01 12:44:03,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 619 transitions, 10929 flow [2023-09-01 12:44:10,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 619 transitions, 10838 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-09-01 12:44:10,362 INFO L231 Difference]: Finished difference. Result has 302 places, 544 transitions, 9147 flow [2023-09-01 12:44:10,363 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} [2023-09-01 12:44:10,363 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 243 predicate places. [2023-09-01 12:44:10,364 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 544 transitions, 9147 flow [2023-09-01 12:44:10,364 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) [2023-09-01 12:44:10,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:44:10,364 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] [2023-09-01 12:44:10,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-09-01 12:44:10,364 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)] === [2023-09-01 12:44:10,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:44:10,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1371524607, now seen corresponding path program 31 times [2023-09-01 12:44:10,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:44:10,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565420988] [2023-09-01 12:44:10,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:44:10,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:44:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:44:10,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:44:10,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:44:10,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565420988] [2023-09-01 12:44:10,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565420988] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:44:10,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:44:10,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 12:44:10,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088367897] [2023-09-01 12:44:10,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:44:10,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 12:44:10,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:44:10,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 12:44:10,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-09-01 12:44:10,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-09-01 12:44:10,801 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) [2023-09-01 12:44:10,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:44:10,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-09-01 12:44:10,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:44:19,754 INFO L130 PetriNetUnfolder]: 21489/40418 cut-off events. [2023-09-01 12:44:19,755 INFO L131 PetriNetUnfolder]: For 687598/689798 co-relation queries the response was YES. [2023-09-01 12:44:20,854 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. [2023-09-01 12:44:20,978 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 438 selfloop transitions, 97 changer transitions 32/668 dead transitions. [2023-09-01 12:44:20,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 668 transitions, 11613 flow [2023-09-01 12:44:20,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 12:44:20,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 12:44:20,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1326 transitions. [2023-09-01 12:44:20,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2023-09-01 12:44:20,980 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1326 transitions. [2023-09-01 12:44:20,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1326 transitions. [2023-09-01 12:44:20,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:44:20,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1326 transitions. [2023-09-01 12:44:20,981 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) [2023-09-01 12:44:20,983 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) [2023-09-01 12:44:20,983 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) [2023-09-01 12:44:20,983 INFO L175 Difference]: Start difference. First operand has 302 places, 544 transitions, 9147 flow. Second operand 10 states and 1326 transitions. [2023-09-01 12:44:20,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 668 transitions, 11613 flow [2023-09-01 12:44:26,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 668 transitions, 11504 flow, removed 34 selfloop flow, removed 8 redundant places. [2023-09-01 12:44:26,248 INFO L231 Difference]: Finished difference. Result has 307 places, 564 transitions, 9762 flow [2023-09-01 12:44:26,248 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} [2023-09-01 12:44:26,249 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 248 predicate places. [2023-09-01 12:44:26,249 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 564 transitions, 9762 flow [2023-09-01 12:44:26,249 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) [2023-09-01 12:44:26,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:44:26,249 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] [2023-09-01 12:44:26,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-09-01 12:44:26,250 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)] === [2023-09-01 12:44:26,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:44:26,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1939885911, now seen corresponding path program 32 times [2023-09-01 12:44:26,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:44:26,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824370447] [2023-09-01 12:44:26,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:44:26,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:44:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:44:26,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:44:26,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:44:26,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824370447] [2023-09-01 12:44:26,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824370447] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:44:26,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:44:26,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:44:26,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331241740] [2023-09-01 12:44:26,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:44:26,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:44:26,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:44:26,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:44:26,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:44:26,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-09-01 12:44:26,782 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) [2023-09-01 12:44:26,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:44:26,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-09-01 12:44:26,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:44:36,344 INFO L130 PetriNetUnfolder]: 21775/40709 cut-off events. [2023-09-01 12:44:36,344 INFO L131 PetriNetUnfolder]: For 719706/721984 co-relation queries the response was YES. [2023-09-01 12:44:37,146 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. [2023-09-01 12:44:37,257 INFO L137 encePairwiseOnDemand]: 242/255 looper letters, 498 selfloop transitions, 91 changer transitions 27/668 dead transitions. [2023-09-01 12:44:37,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 668 transitions, 12055 flow [2023-09-01 12:44:37,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 12:44:37,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 12:44:37,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1320 transitions. [2023-09-01 12:44:37,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176470588235295 [2023-09-01 12:44:37,260 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1320 transitions. [2023-09-01 12:44:37,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1320 transitions. [2023-09-01 12:44:37,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:44:37,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1320 transitions. [2023-09-01 12:44:37,262 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) [2023-09-01 12:44:37,263 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) [2023-09-01 12:44:37,264 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) [2023-09-01 12:44:37,264 INFO L175 Difference]: Start difference. First operand has 307 places, 564 transitions, 9762 flow. Second operand 10 states and 1320 transitions. [2023-09-01 12:44:37,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 668 transitions, 12055 flow [2023-09-01 12:44:43,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 668 transitions, 11951 flow, removed 52 selfloop flow, removed 1 redundant places. [2023-09-01 12:44:43,230 INFO L231 Difference]: Finished difference. Result has 316 places, 565 transitions, 9873 flow [2023-09-01 12:44:43,230 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} [2023-09-01 12:44:43,231 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 257 predicate places. [2023-09-01 12:44:43,231 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 565 transitions, 9873 flow [2023-09-01 12:44:43,231 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) [2023-09-01 12:44:43,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:44:43,232 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] [2023-09-01 12:44:43,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-09-01 12:44:43,232 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)] === [2023-09-01 12:44:43,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:44:43,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1215928693, now seen corresponding path program 33 times [2023-09-01 12:44:43,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:44:43,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848954454] [2023-09-01 12:44:43,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:44:43,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:44:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:44:43,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:44:43,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:44:43,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848954454] [2023-09-01 12:44:43,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848954454] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:44:43,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:44:43,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 12:44:43,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954370045] [2023-09-01 12:44:43,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:44:43,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:44:43,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:44:43,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:44:43,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 12:44:43,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-09-01 12:44:43,579 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) [2023-09-01 12:44:43,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:44:43,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-09-01 12:44:43,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:44:52,932 INFO L130 PetriNetUnfolder]: 21925/40631 cut-off events. [2023-09-01 12:44:52,932 INFO L131 PetriNetUnfolder]: For 734293/737369 co-relation queries the response was YES. [2023-09-01 12:44:53,657 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. [2023-09-01 12:44:53,768 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 505 selfloop transitions, 54 changer transitions 16/640 dead transitions. [2023-09-01 12:44:53,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 640 transitions, 11837 flow [2023-09-01 12:44:53,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 12:44:53,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 12:44:53,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 930 transitions. [2023-09-01 12:44:53,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210084033613446 [2023-09-01 12:44:53,770 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 930 transitions. [2023-09-01 12:44:53,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 930 transitions. [2023-09-01 12:44:53,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:44:53,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 930 transitions. [2023-09-01 12:44:53,771 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) [2023-09-01 12:44:53,772 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) [2023-09-01 12:44:53,773 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) [2023-09-01 12:44:53,773 INFO L175 Difference]: Start difference. First operand has 316 places, 565 transitions, 9873 flow. Second operand 7 states and 930 transitions. [2023-09-01 12:44:53,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 640 transitions, 11837 flow [2023-09-01 12:45:00,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 640 transitions, 11728 flow, removed 34 selfloop flow, removed 4 redundant places. [2023-09-01 12:45:00,448 INFO L231 Difference]: Finished difference. Result has 317 places, 570 transitions, 10046 flow [2023-09-01 12:45:00,448 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} [2023-09-01 12:45:00,448 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 258 predicate places. [2023-09-01 12:45:00,449 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 570 transitions, 10046 flow [2023-09-01 12:45:00,449 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) [2023-09-01 12:45:00,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:45:00,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:45:00,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-09-01 12:45:00,449 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)] === [2023-09-01 12:45:00,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:45:00,450 INFO L85 PathProgramCache]: Analyzing trace with hash 334571437, now seen corresponding path program 34 times [2023-09-01 12:45:00,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:45:00,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395261859] [2023-09-01 12:45:00,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:45:00,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:45:00,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:45:00,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:45:00,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:45:00,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395261859] [2023-09-01 12:45:00,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395261859] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:45:00,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:45:00,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:45:00,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271791971] [2023-09-01 12:45:00,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:45:00,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:45:00,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:45:00,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:45:00,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:45:00,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-09-01 12:45:00,856 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) [2023-09-01 12:45:00,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:45:00,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-09-01 12:45:00,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:45:09,990 INFO L130 PetriNetUnfolder]: 21022/39199 cut-off events. [2023-09-01 12:45:09,991 INFO L131 PetriNetUnfolder]: For 717634/720725 co-relation queries the response was YES. [2023-09-01 12:45:10,684 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. [2023-09-01 12:45:10,791 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 431 selfloop transitions, 78 changer transitions 31/639 dead transitions. [2023-09-01 12:45:10,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 639 transitions, 11840 flow [2023-09-01 12:45:10,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 12:45:10,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 12:45:10,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1313 transitions. [2023-09-01 12:45:10,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5149019607843137 [2023-09-01 12:45:10,794 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1313 transitions. [2023-09-01 12:45:10,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1313 transitions. [2023-09-01 12:45:10,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:45:10,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1313 transitions. [2023-09-01 12:45:10,796 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) [2023-09-01 12:45:10,797 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) [2023-09-01 12:45:10,798 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) [2023-09-01 12:45:10,798 INFO L175 Difference]: Start difference. First operand has 317 places, 570 transitions, 10046 flow. Second operand 10 states and 1313 transitions. [2023-09-01 12:45:10,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 639 transitions, 11840 flow [2023-09-01 12:45:17,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 639 transitions, 11641 flow, removed 46 selfloop flow, removed 8 redundant places. [2023-09-01 12:45:17,124 INFO L231 Difference]: Finished difference. Result has 323 places, 564 transitions, 10005 flow [2023-09-01 12:45:17,125 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} [2023-09-01 12:45:17,125 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 264 predicate places. [2023-09-01 12:45:17,125 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 564 transitions, 10005 flow [2023-09-01 12:45:17,126 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) [2023-09-01 12:45:17,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:45:17,126 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] [2023-09-01 12:45:17,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-09-01 12:45:17,126 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)] === [2023-09-01 12:45:17,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:45:17,127 INFO L85 PathProgramCache]: Analyzing trace with hash 310214349, now seen corresponding path program 35 times [2023-09-01 12:45:17,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:45:17,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995079418] [2023-09-01 12:45:17,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:45:17,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:45:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:45:17,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:45:17,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:45:17,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995079418] [2023-09-01 12:45:17,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995079418] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:45:17,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:45:17,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:45:17,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806331239] [2023-09-01 12:45:17,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:45:17,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:45:17,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:45:17,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:45:17,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:45:17,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-09-01 12:45:17,574 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) [2023-09-01 12:45:17,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:45:17,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-09-01 12:45:17,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:45:27,281 INFO L130 PetriNetUnfolder]: 21228/39046 cut-off events. [2023-09-01 12:45:27,281 INFO L131 PetriNetUnfolder]: For 711090/713808 co-relation queries the response was YES. [2023-09-01 12:45:28,044 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. [2023-09-01 12:45:28,151 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 429 selfloop transitions, 93 changer transitions 45/638 dead transitions. [2023-09-01 12:45:28,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 638 transitions, 11940 flow [2023-09-01 12:45:28,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 12:45:28,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 12:45:28,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1310 transitions. [2023-09-01 12:45:28,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5137254901960784 [2023-09-01 12:45:28,153 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1310 transitions. [2023-09-01 12:45:28,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1310 transitions. [2023-09-01 12:45:28,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:45:28,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1310 transitions. [2023-09-01 12:45:28,155 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) [2023-09-01 12:45:28,156 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) [2023-09-01 12:45:28,156 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) [2023-09-01 12:45:28,156 INFO L175 Difference]: Start difference. First operand has 323 places, 564 transitions, 10005 flow. Second operand 10 states and 1310 transitions. [2023-09-01 12:45:28,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 638 transitions, 11940 flow [2023-09-01 12:45:34,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 638 transitions, 11771 flow, removed 30 selfloop flow, removed 6 redundant places. [2023-09-01 12:45:34,742 INFO L231 Difference]: Finished difference. Result has 325 places, 546 transitions, 9674 flow [2023-09-01 12:45:34,742 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} [2023-09-01 12:45:34,742 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 266 predicate places. [2023-09-01 12:45:34,742 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 546 transitions, 9674 flow [2023-09-01 12:45:34,743 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) [2023-09-01 12:45:34,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:45:34,743 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] [2023-09-01 12:45:34,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-09-01 12:45:34,743 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)] === [2023-09-01 12:45:34,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:45:34,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1812093319, now seen corresponding path program 36 times [2023-09-01 12:45:34,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:45:34,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484065664] [2023-09-01 12:45:34,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:45:34,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:45:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:45:35,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:45:35,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:45:35,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484065664] [2023-09-01 12:45:35,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484065664] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:45:35,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:45:35,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 12:45:35,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366981630] [2023-09-01 12:45:35,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:45:35,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:45:35,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:45:35,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:45:35,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:45:35,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-09-01 12:45:35,319 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) [2023-09-01 12:45:35,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:45:35,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-09-01 12:45:35,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:45:44,050 INFO L130 PetriNetUnfolder]: 20827/38713 cut-off events. [2023-09-01 12:45:44,050 INFO L131 PetriNetUnfolder]: For 694460/697361 co-relation queries the response was YES. [2023-09-01 12:45:44,843 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. [2023-09-01 12:45:44,964 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 435 selfloop transitions, 64 changer transitions 11/626 dead transitions. [2023-09-01 12:45:44,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 626 transitions, 11641 flow [2023-09-01 12:45:44,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:45:44,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:45:44,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1058 transitions. [2023-09-01 12:45:44,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186274509803922 [2023-09-01 12:45:44,966 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1058 transitions. [2023-09-01 12:45:44,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1058 transitions. [2023-09-01 12:45:44,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:45:44,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1058 transitions. [2023-09-01 12:45:44,968 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) [2023-09-01 12:45:44,969 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) [2023-09-01 12:45:44,970 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) [2023-09-01 12:45:44,970 INFO L175 Difference]: Start difference. First operand has 325 places, 546 transitions, 9674 flow. Second operand 8 states and 1058 transitions. [2023-09-01 12:45:44,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 626 transitions, 11641 flow [2023-09-01 12:45:51,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 626 transitions, 11252 flow, removed 98 selfloop flow, removed 11 redundant places. [2023-09-01 12:45:51,796 INFO L231 Difference]: Finished difference. Result has 320 places, 547 transitions, 9585 flow [2023-09-01 12:45:51,796 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} [2023-09-01 12:45:51,797 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 261 predicate places. [2023-09-01 12:45:51,797 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 547 transitions, 9585 flow [2023-09-01 12:45:51,797 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) [2023-09-01 12:45:51,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:45:51,798 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] [2023-09-01 12:45:51,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-09-01 12:45:51,798 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)] === [2023-09-01 12:45:51,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:45:51,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1539216861, now seen corresponding path program 37 times [2023-09-01 12:45:51,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:45:51,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915767036] [2023-09-01 12:45:51,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:45:51,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:45:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:45:52,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:45:52,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:45:52,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915767036] [2023-09-01 12:45:52,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915767036] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:45:52,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:45:52,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:45:52,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186229729] [2023-09-01 12:45:52,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:45:52,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:45:52,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:45:52,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:45:52,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:45:52,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-09-01 12:45:52,281 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) [2023-09-01 12:45:52,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:45:52,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-09-01 12:45:52,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:46:01,667 INFO L130 PetriNetUnfolder]: 21501/39563 cut-off events. [2023-09-01 12:46:01,667 INFO L131 PetriNetUnfolder]: For 702783/705516 co-relation queries the response was YES. [2023-09-01 12:46:02,439 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. [2023-09-01 12:46:02,554 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 516 selfloop transitions, 35 changer transitions 11/607 dead transitions. [2023-09-01 12:46:02,554 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 607 transitions, 11271 flow [2023-09-01 12:46:02,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:46:02,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:46:02,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1163 transitions. [2023-09-01 12:46:02,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067538126361656 [2023-09-01 12:46:02,555 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1163 transitions. [2023-09-01 12:46:02,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1163 transitions. [2023-09-01 12:46:02,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:46:02,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1163 transitions. [2023-09-01 12:46:02,556 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) [2023-09-01 12:46:02,558 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) [2023-09-01 12:46:02,558 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) [2023-09-01 12:46:02,558 INFO L175 Difference]: Start difference. First operand has 320 places, 547 transitions, 9585 flow. Second operand 9 states and 1163 transitions. [2023-09-01 12:46:02,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 607 transitions, 11271 flow [2023-09-01 12:46:09,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 607 transitions, 11157 flow, removed 31 selfloop flow, removed 5 redundant places. [2023-09-01 12:46:09,158 INFO L231 Difference]: Finished difference. Result has 324 places, 541 transitions, 9504 flow [2023-09-01 12:46:09,159 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} [2023-09-01 12:46:09,159 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 265 predicate places. [2023-09-01 12:46:09,159 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 541 transitions, 9504 flow [2023-09-01 12:46:09,159 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) [2023-09-01 12:46:09,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:46:09,160 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] [2023-09-01 12:46:09,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-09-01 12:46:09,160 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)] === [2023-09-01 12:46:09,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:46:09,160 INFO L85 PathProgramCache]: Analyzing trace with hash 903742431, now seen corresponding path program 38 times [2023-09-01 12:46:09,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:46:09,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194545855] [2023-09-01 12:46:09,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:46:09,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:46:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:46:09,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:46:09,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:46:09,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194545855] [2023-09-01 12:46:09,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194545855] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:46:09,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:46:09,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 12:46:09,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433710680] [2023-09-01 12:46:09,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:46:09,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 12:46:09,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:46:09,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 12:46:09,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 12:46:09,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 255 [2023-09-01 12:46:09,477 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) [2023-09-01 12:46:09,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:46:09,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 255 [2023-09-01 12:46:09,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:46:17,224 INFO L130 PetriNetUnfolder]: 18429/34246 cut-off events. [2023-09-01 12:46:17,224 INFO L131 PetriNetUnfolder]: For 642266/644619 co-relation queries the response was YES. [2023-09-01 12:46:17,796 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. [2023-09-01 12:46:17,893 INFO L137 encePairwiseOnDemand]: 248/255 looper letters, 380 selfloop transitions, 4 changer transitions 36/542 dead transitions. [2023-09-01 12:46:17,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 542 transitions, 10134 flow [2023-09-01 12:46:17,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 12:46:17,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 12:46:17,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 789 transitions. [2023-09-01 12:46:17,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515686274509804 [2023-09-01 12:46:17,894 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 789 transitions. [2023-09-01 12:46:17,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 789 transitions. [2023-09-01 12:46:17,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:46:17,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 789 transitions. [2023-09-01 12:46:17,895 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) [2023-09-01 12:46:17,896 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) [2023-09-01 12:46:17,896 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) [2023-09-01 12:46:17,896 INFO L175 Difference]: Start difference. First operand has 324 places, 541 transitions, 9504 flow. Second operand 6 states and 789 transitions. [2023-09-01 12:46:17,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 542 transitions, 10134 flow [2023-09-01 12:46:23,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 542 transitions, 9962 flow, removed 25 selfloop flow, removed 12 redundant places. [2023-09-01 12:46:23,133 INFO L231 Difference]: Finished difference. Result has 316 places, 502 transitions, 8635 flow [2023-09-01 12:46:23,134 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} [2023-09-01 12:46:23,134 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 257 predicate places. [2023-09-01 12:46:23,134 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 502 transitions, 8635 flow [2023-09-01 12:46:23,134 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) [2023-09-01 12:46:23,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:46:23,134 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] [2023-09-01 12:46:23,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-09-01 12:46:23,135 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)] === [2023-09-01 12:46:23,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:46:23,135 INFO L85 PathProgramCache]: Analyzing trace with hash 522842105, now seen corresponding path program 39 times [2023-09-01 12:46:23,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:46:23,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319932389] [2023-09-01 12:46:23,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:46:23,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:46:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:46:23,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:46:23,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:46:23,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319932389] [2023-09-01 12:46:23,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319932389] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:46:23,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:46:23,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 12:46:23,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631724095] [2023-09-01 12:46:23,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:46:23,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:46:23,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:46:23,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:46:23,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 12:46:23,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-09-01 12:46:23,603 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) [2023-09-01 12:46:23,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:46:23,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-09-01 12:46:23,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:46:29,759 INFO L130 PetriNetUnfolder]: 15969/29293 cut-off events. [2023-09-01 12:46:29,759 INFO L131 PetriNetUnfolder]: For 534080/536150 co-relation queries the response was YES. [2023-09-01 12:46:30,184 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. [2023-09-01 12:46:30,547 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 398 selfloop transitions, 36 changer transitions 41/536 dead transitions. [2023-09-01 12:46:30,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 536 transitions, 9855 flow [2023-09-01 12:46:30,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 12:46:30,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 12:46:30,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 797 transitions. [2023-09-01 12:46:30,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5209150326797386 [2023-09-01 12:46:30,548 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 797 transitions. [2023-09-01 12:46:30,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 797 transitions. [2023-09-01 12:46:30,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:46:30,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 797 transitions. [2023-09-01 12:46:30,549 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) [2023-09-01 12:46:30,550 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) [2023-09-01 12:46:30,550 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) [2023-09-01 12:46:30,550 INFO L175 Difference]: Start difference. First operand has 316 places, 502 transitions, 8635 flow. Second operand 6 states and 797 transitions. [2023-09-01 12:46:30,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 536 transitions, 9855 flow [2023-09-01 12:46:34,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 536 transitions, 9556 flow, removed 107 selfloop flow, removed 11 redundant places. [2023-09-01 12:46:34,190 INFO L231 Difference]: Finished difference. Result has 295 places, 462 transitions, 7707 flow [2023-09-01 12:46:34,190 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} [2023-09-01 12:46:34,190 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 236 predicate places. [2023-09-01 12:46:34,191 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 462 transitions, 7707 flow [2023-09-01 12:46:34,191 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) [2023-09-01 12:46:34,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:46:34,191 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] [2023-09-01 12:46:34,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-09-01 12:46:34,191 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)] === [2023-09-01 12:46:34,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:46:34,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1034263869, now seen corresponding path program 40 times [2023-09-01 12:46:34,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:46:34,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295889386] [2023-09-01 12:46:34,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:46:34,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:46:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:46:34,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:46:34,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:46:34,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295889386] [2023-09-01 12:46:34,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295889386] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:46:34,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:46:34,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:46:34,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82428401] [2023-09-01 12:46:34,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:46:34,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:46:34,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:46:34,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:46:34,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:46:34,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-09-01 12:46:34,444 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) [2023-09-01 12:46:34,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:46:34,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-09-01 12:46:34,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:46:41,457 INFO L130 PetriNetUnfolder]: 19684/32997 cut-off events. [2023-09-01 12:46:41,458 INFO L131 PetriNetUnfolder]: For 499405/501598 co-relation queries the response was YES. [2023-09-01 12:46:41,881 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. [2023-09-01 12:46:41,949 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 408 selfloop transitions, 19 changer transitions 202/728 dead transitions. [2023-09-01 12:46:41,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 728 transitions, 12445 flow [2023-09-01 12:46:41,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 12:46:41,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 12:46:41,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1454 transitions. [2023-09-01 12:46:41,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5183600713012477 [2023-09-01 12:46:41,951 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1454 transitions. [2023-09-01 12:46:41,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1454 transitions. [2023-09-01 12:46:41,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:46:41,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1454 transitions. [2023-09-01 12:46:41,953 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) [2023-09-01 12:46:41,954 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) [2023-09-01 12:46:41,954 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) [2023-09-01 12:46:41,954 INFO L175 Difference]: Start difference. First operand has 295 places, 462 transitions, 7707 flow. Second operand 11 states and 1454 transitions. [2023-09-01 12:46:41,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 728 transitions, 12445 flow [2023-09-01 12:46:45,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 728 transitions, 12250 flow, removed 74 selfloop flow, removed 7 redundant places. [2023-09-01 12:46:45,216 INFO L231 Difference]: Finished difference. Result has 297 places, 354 transitions, 5640 flow [2023-09-01 12:46:45,217 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} [2023-09-01 12:46:45,217 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 238 predicate places. [2023-09-01 12:46:45,217 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 354 transitions, 5640 flow [2023-09-01 12:46:45,217 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) [2023-09-01 12:46:45,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:46:45,218 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] [2023-09-01 12:46:45,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-09-01 12:46:45,218 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)] === [2023-09-01 12:46:45,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:46:45,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1090402229, now seen corresponding path program 41 times [2023-09-01 12:46:45,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:46:45,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806098660] [2023-09-01 12:46:45,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:46:45,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:46:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:46:45,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:46:45,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:46:45,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806098660] [2023-09-01 12:46:45,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806098660] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:46:45,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:46:45,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 12:46:45,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924650412] [2023-09-01 12:46:45,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:46:45,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 12:46:45,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:46:45,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 12:46:45,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-09-01 12:46:45,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-09-01 12:46:45,507 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) [2023-09-01 12:46:45,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:46:45,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-09-01 12:46:45,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:46:49,899 INFO L130 PetriNetUnfolder]: 11917/22775 cut-off events. [2023-09-01 12:46:49,900 INFO L131 PetriNetUnfolder]: For 335055/336380 co-relation queries the response was YES. [2023-09-01 12:46:50,251 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. [2023-09-01 12:46:50,312 INFO L137 encePairwiseOnDemand]: 239/255 looper letters, 295 selfloop transitions, 153 changer transitions 31/518 dead transitions. [2023-09-01 12:46:50,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 518 transitions, 8784 flow [2023-09-01 12:46:50,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:46:50,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:46:50,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1214 transitions. [2023-09-01 12:46:50,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289760348583878 [2023-09-01 12:46:50,318 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1214 transitions. [2023-09-01 12:46:50,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1214 transitions. [2023-09-01 12:46:50,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:46:50,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1214 transitions. [2023-09-01 12:46:50,320 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) [2023-09-01 12:46:50,322 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) [2023-09-01 12:46:50,322 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) [2023-09-01 12:46:50,322 INFO L175 Difference]: Start difference. First operand has 297 places, 354 transitions, 5640 flow. Second operand 9 states and 1214 transitions. [2023-09-01 12:46:50,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 518 transitions, 8784 flow [2023-09-01 12:46:52,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 518 transitions, 8303 flow, removed 133 selfloop flow, removed 30 redundant places. [2023-09-01 12:46:52,538 INFO L231 Difference]: Finished difference. Result has 276 places, 394 transitions, 6787 flow [2023-09-01 12:46:52,538 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} [2023-09-01 12:46:52,538 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 217 predicate places. [2023-09-01 12:46:52,539 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 394 transitions, 6787 flow [2023-09-01 12:46:52,539 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) [2023-09-01 12:46:52,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:46:52,539 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] [2023-09-01 12:46:52,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-09-01 12:46:52,539 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)] === [2023-09-01 12:46:52,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:46:52,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1905190333, now seen corresponding path program 42 times [2023-09-01 12:46:52,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:46:52,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119202375] [2023-09-01 12:46:52,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:46:52,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:46:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:46:52,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:46:52,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:46:52,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119202375] [2023-09-01 12:46:52,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119202375] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:46:52,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:46:52,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:46:52,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110686480] [2023-09-01 12:46:52,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:46:52,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 12:46:52,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:46:52,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 12:46:52,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-09-01 12:46:52,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-09-01 12:46:52,924 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) [2023-09-01 12:46:52,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:46:52,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-09-01 12:46:52,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:46:57,089 INFO L130 PetriNetUnfolder]: 11653/21950 cut-off events. [2023-09-01 12:46:57,089 INFO L131 PetriNetUnfolder]: For 304161/305804 co-relation queries the response was YES. [2023-09-01 12:46:57,283 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. [2023-09-01 12:46:57,338 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 348 selfloop transitions, 20 changer transitions 0/418 dead transitions. [2023-09-01 12:46:57,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 418 transitions, 7697 flow [2023-09-01 12:46:57,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 12:46:57,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 12:46:57,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 896 transitions. [2023-09-01 12:46:57,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019607843137255 [2023-09-01 12:46:57,339 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 896 transitions. [2023-09-01 12:46:57,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 896 transitions. [2023-09-01 12:46:57,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:46:57,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 896 transitions. [2023-09-01 12:46:57,341 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) [2023-09-01 12:46:57,342 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) [2023-09-01 12:46:57,342 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) [2023-09-01 12:46:57,342 INFO L175 Difference]: Start difference. First operand has 276 places, 394 transitions, 6787 flow. Second operand 7 states and 896 transitions. [2023-09-01 12:46:57,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 418 transitions, 7697 flow [2023-09-01 12:46:59,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 418 transitions, 7525 flow, removed 73 selfloop flow, removed 2 redundant places. [2023-09-01 12:46:59,300 INFO L231 Difference]: Finished difference. Result has 282 places, 395 transitions, 6691 flow [2023-09-01 12:46:59,300 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} [2023-09-01 12:46:59,301 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 223 predicate places. [2023-09-01 12:46:59,301 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 395 transitions, 6691 flow [2023-09-01 12:46:59,301 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) [2023-09-01 12:46:59,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:46:59,301 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] [2023-09-01 12:46:59,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-09-01 12:46:59,301 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)] === [2023-09-01 12:46:59,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:46:59,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1139417843, now seen corresponding path program 43 times [2023-09-01 12:46:59,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:46:59,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617026863] [2023-09-01 12:46:59,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:46:59,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:46:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:46:59,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:46:59,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:46:59,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617026863] [2023-09-01 12:46:59,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617026863] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:46:59,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:46:59,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:46:59,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97454079] [2023-09-01 12:46:59,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:46:59,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:46:59,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:46:59,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:46:59,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:46:59,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-09-01 12:46:59,766 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) [2023-09-01 12:46:59,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:46:59,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-09-01 12:46:59,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:47:04,048 INFO L130 PetriNetUnfolder]: 11852/22416 cut-off events. [2023-09-01 12:47:04,048 INFO L131 PetriNetUnfolder]: For 303238/304739 co-relation queries the response was YES. [2023-09-01 12:47:04,253 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. [2023-09-01 12:47:04,309 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 352 selfloop transitions, 23 changer transitions 2/439 dead transitions. [2023-09-01 12:47:04,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 439 transitions, 7842 flow [2023-09-01 12:47:04,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:47:04,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:47:04,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1152 transitions. [2023-09-01 12:47:04,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019607843137255 [2023-09-01 12:47:04,310 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1152 transitions. [2023-09-01 12:47:04,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1152 transitions. [2023-09-01 12:47:04,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:47:04,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1152 transitions. [2023-09-01 12:47:04,311 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) [2023-09-01 12:47:04,312 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) [2023-09-01 12:47:04,313 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) [2023-09-01 12:47:04,313 INFO L175 Difference]: Start difference. First operand has 282 places, 395 transitions, 6691 flow. Second operand 9 states and 1152 transitions. [2023-09-01 12:47:04,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 439 transitions, 7842 flow [2023-09-01 12:47:06,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 439 transitions, 7796 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-09-01 12:47:06,227 INFO L231 Difference]: Finished difference. Result has 288 places, 400 transitions, 6811 flow [2023-09-01 12:47:06,227 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} [2023-09-01 12:47:06,227 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 229 predicate places. [2023-09-01 12:47:06,228 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 400 transitions, 6811 flow [2023-09-01 12:47:06,228 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) [2023-09-01 12:47:06,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:47:06,228 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] [2023-09-01 12:47:06,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-09-01 12:47:06,228 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)] === [2023-09-01 12:47:06,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:47:06,228 INFO L85 PathProgramCache]: Analyzing trace with hash 504172415, now seen corresponding path program 44 times [2023-09-01 12:47:06,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:47:06,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376730694] [2023-09-01 12:47:06,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:47:06,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:47:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:47:06,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:47:06,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:47:06,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376730694] [2023-09-01 12:47:06,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376730694] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:47:06,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:47:06,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 12:47:06,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455737172] [2023-09-01 12:47:06,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:47:06,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 12:47:06,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:47:06,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 12:47:06,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-09-01 12:47:06,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-09-01 12:47:06,671 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) [2023-09-01 12:47:06,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:47:06,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-09-01 12:47:06,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:47:11,157 INFO L130 PetriNetUnfolder]: 12157/23173 cut-off events. [2023-09-01 12:47:11,157 INFO L131 PetriNetUnfolder]: For 309003/310491 co-relation queries the response was YES. [2023-09-01 12:47:11,448 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. [2023-09-01 12:47:11,507 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 346 selfloop transitions, 56 changer transitions 18/459 dead transitions. [2023-09-01 12:47:11,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 459 transitions, 8270 flow [2023-09-01 12:47:11,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:47:11,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:47:11,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1152 transitions. [2023-09-01 12:47:11,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019607843137255 [2023-09-01 12:47:11,509 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1152 transitions. [2023-09-01 12:47:11,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1152 transitions. [2023-09-01 12:47:11,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:47:11,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1152 transitions. [2023-09-01 12:47:11,511 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) [2023-09-01 12:47:11,512 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) [2023-09-01 12:47:11,513 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) [2023-09-01 12:47:11,513 INFO L175 Difference]: Start difference. First operand has 288 places, 400 transitions, 6811 flow. Second operand 9 states and 1152 transitions. [2023-09-01 12:47:11,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 459 transitions, 8270 flow [2023-09-01 12:47:13,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 459 transitions, 8195 flow, removed 23 selfloop flow, removed 4 redundant places. [2023-09-01 12:47:13,824 INFO L231 Difference]: Finished difference. Result has 296 places, 404 transitions, 6995 flow [2023-09-01 12:47:13,825 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} [2023-09-01 12:47:13,825 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 237 predicate places. [2023-09-01 12:47:13,825 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 404 transitions, 6995 flow [2023-09-01 12:47:13,825 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) [2023-09-01 12:47:13,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:47:13,825 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] [2023-09-01 12:47:13,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-09-01 12:47:13,825 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)] === [2023-09-01 12:47:13,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:47:13,826 INFO L85 PathProgramCache]: Analyzing trace with hash 717098219, now seen corresponding path program 45 times [2023-09-01 12:47:13,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:47:13,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310649303] [2023-09-01 12:47:13,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:47:13,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:47:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:47:14,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:47:14,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:47:14,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310649303] [2023-09-01 12:47:14,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310649303] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:47:14,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:47:14,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 12:47:14,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591221731] [2023-09-01 12:47:14,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:47:14,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 12:47:14,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:47:14,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 12:47:14,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-09-01 12:47:14,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-09-01 12:47:14,220 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) [2023-09-01 12:47:14,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:47:14,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-09-01 12:47:14,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:47:17,298 INFO L130 PetriNetUnfolder]: 8189/15299 cut-off events. [2023-09-01 12:47:17,298 INFO L131 PetriNetUnfolder]: For 219629/220091 co-relation queries the response was YES. [2023-09-01 12:47:17,425 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. [2023-09-01 12:47:17,468 INFO L137 encePairwiseOnDemand]: 241/255 looper letters, 294 selfloop transitions, 162 changer transitions 58/539 dead transitions. [2023-09-01 12:47:17,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 539 transitions, 9469 flow [2023-09-01 12:47:17,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 12:47:17,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 12:47:17,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2066 transitions. [2023-09-01 12:47:17,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5063725490196078 [2023-09-01 12:47:17,470 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2066 transitions. [2023-09-01 12:47:17,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2066 transitions. [2023-09-01 12:47:17,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:47:17,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2066 transitions. [2023-09-01 12:47:17,472 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) [2023-09-01 12:47:17,474 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) [2023-09-01 12:47:17,474 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) [2023-09-01 12:47:17,474 INFO L175 Difference]: Start difference. First operand has 296 places, 404 transitions, 6995 flow. Second operand 16 states and 2066 transitions. [2023-09-01 12:47:17,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 539 transitions, 9469 flow [2023-09-01 12:47:18,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 539 transitions, 9349 flow, removed 18 selfloop flow, removed 12 redundant places. [2023-09-01 12:47:18,838 INFO L231 Difference]: Finished difference. Result has 297 places, 366 transitions, 7045 flow [2023-09-01 12:47:18,838 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} [2023-09-01 12:47:18,838 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 238 predicate places. [2023-09-01 12:47:18,839 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 366 transitions, 7045 flow [2023-09-01 12:47:18,839 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) [2023-09-01 12:47:18,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:47:18,839 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] [2023-09-01 12:47:18,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-09-01 12:47:18,839 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)] === [2023-09-01 12:47:18,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:47:18,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1845096327, now seen corresponding path program 46 times [2023-09-01 12:47:18,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:47:18,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179290178] [2023-09-01 12:47:18,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:47:18,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:47:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:47:19,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:47:19,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:47:19,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179290178] [2023-09-01 12:47:19,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179290178] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:47:19,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:47:19,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 12:47:19,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10097787] [2023-09-01 12:47:19,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:47:19,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:47:19,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:47:19,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:47:19,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:47:19,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-09-01 12:47:19,361 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) [2023-09-01 12:47:19,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:47:19,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-09-01 12:47:19,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:47:22,256 INFO L130 PetriNetUnfolder]: 7389/14263 cut-off events. [2023-09-01 12:47:22,256 INFO L131 PetriNetUnfolder]: For 252272/252718 co-relation queries the response was YES. [2023-09-01 12:47:22,375 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. [2023-09-01 12:47:22,417 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 310 selfloop transitions, 36 changer transitions 20/411 dead transitions. [2023-09-01 12:47:22,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 411 transitions, 8321 flow [2023-09-01 12:47:22,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:47:22,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:47:22,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1035 transitions. [2023-09-01 12:47:22,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5073529411764706 [2023-09-01 12:47:22,420 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1035 transitions. [2023-09-01 12:47:22,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1035 transitions. [2023-09-01 12:47:22,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:47:22,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1035 transitions. [2023-09-01 12:47:22,421 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) [2023-09-01 12:47:22,422 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) [2023-09-01 12:47:22,422 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) [2023-09-01 12:47:22,422 INFO L175 Difference]: Start difference. First operand has 297 places, 366 transitions, 7045 flow. Second operand 8 states and 1035 transitions. [2023-09-01 12:47:22,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 411 transitions, 8321 flow [2023-09-01 12:47:23,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 411 transitions, 7843 flow, removed 142 selfloop flow, removed 13 redundant places. [2023-09-01 12:47:23,710 INFO L231 Difference]: Finished difference. Result has 286 places, 365 transitions, 6652 flow [2023-09-01 12:47:23,710 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} [2023-09-01 12:47:23,711 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 227 predicate places. [2023-09-01 12:47:23,711 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 365 transitions, 6652 flow [2023-09-01 12:47:23,711 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) [2023-09-01 12:47:23,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:47:23,711 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] [2023-09-01 12:47:23,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-09-01 12:47:23,712 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)] === [2023-09-01 12:47:23,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:47:23,712 INFO L85 PathProgramCache]: Analyzing trace with hash -913608869, now seen corresponding path program 47 times [2023-09-01 12:47:23,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:47:23,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192545740] [2023-09-01 12:47:23,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:47:23,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:47:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:47:24,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:47:24,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:47:24,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192545740] [2023-09-01 12:47:24,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192545740] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:47:24,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:47:24,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 12:47:24,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713120207] [2023-09-01 12:47:24,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:47:24,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:47:24,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:47:24,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:47:24,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:47:24,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-09-01 12:47:24,461 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) [2023-09-01 12:47:24,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:47:24,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-09-01 12:47:24,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:47:27,320 INFO L130 PetriNetUnfolder]: 7481/14425 cut-off events. [2023-09-01 12:47:27,320 INFO L131 PetriNetUnfolder]: For 225190/225598 co-relation queries the response was YES. [2023-09-01 12:47:27,421 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. [2023-09-01 12:47:27,457 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 280 selfloop transitions, 42 changer transitions 18/385 dead transitions. [2023-09-01 12:47:27,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 385 transitions, 7413 flow [2023-09-01 12:47:27,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:47:27,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:47:27,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1029 transitions. [2023-09-01 12:47:27,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5044117647058823 [2023-09-01 12:47:27,459 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1029 transitions. [2023-09-01 12:47:27,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1029 transitions. [2023-09-01 12:47:27,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:47:27,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1029 transitions. [2023-09-01 12:47:27,461 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) [2023-09-01 12:47:27,462 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) [2023-09-01 12:47:27,462 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) [2023-09-01 12:47:27,462 INFO L175 Difference]: Start difference. First operand has 286 places, 365 transitions, 6652 flow. Second operand 8 states and 1029 transitions. [2023-09-01 12:47:27,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 385 transitions, 7413 flow [2023-09-01 12:47:28,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 385 transitions, 7303 flow, removed 17 selfloop flow, removed 7 redundant places. [2023-09-01 12:47:28,562 INFO L231 Difference]: Finished difference. Result has 286 places, 351 transitions, 6350 flow [2023-09-01 12:47:28,562 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} [2023-09-01 12:47:28,562 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 227 predicate places. [2023-09-01 12:47:28,563 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 351 transitions, 6350 flow [2023-09-01 12:47:28,563 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) [2023-09-01 12:47:28,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:47:28,563 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] [2023-09-01 12:47:28,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-09-01 12:47:28,563 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)] === [2023-09-01 12:47:28,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:47:28,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1649211397, now seen corresponding path program 48 times [2023-09-01 12:47:28,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:47:28,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115737571] [2023-09-01 12:47:28,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:47:28,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:47:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:47:29,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:47:29,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:47:29,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115737571] [2023-09-01 12:47:29,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115737571] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:47:29,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:47:29,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 12:47:29,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229582203] [2023-09-01 12:47:29,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:47:29,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 12:47:29,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:47:29,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 12:47:29,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-09-01 12:47:29,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-09-01 12:47:29,069 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) [2023-09-01 12:47:29,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:47:29,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-09-01 12:47:29,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:47:31,827 INFO L130 PetriNetUnfolder]: 7605/14785 cut-off events. [2023-09-01 12:47:31,827 INFO L131 PetriNetUnfolder]: For 219893/220275 co-relation queries the response was YES. [2023-09-01 12:47:31,966 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. [2023-09-01 12:47:32,007 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 288 selfloop transitions, 55 changer transitions 22/390 dead transitions. [2023-09-01 12:47:32,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 390 transitions, 7482 flow [2023-09-01 12:47:32,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 12:47:32,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 12:47:32,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1259 transitions. [2023-09-01 12:47:32,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937254901960784 [2023-09-01 12:47:32,009 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1259 transitions. [2023-09-01 12:47:32,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1259 transitions. [2023-09-01 12:47:32,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:47:32,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1259 transitions. [2023-09-01 12:47:32,010 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) [2023-09-01 12:47:32,302 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) [2023-09-01 12:47:32,302 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) [2023-09-01 12:47:32,302 INFO L175 Difference]: Start difference. First operand has 286 places, 351 transitions, 6350 flow. Second operand 10 states and 1259 transitions. [2023-09-01 12:47:32,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 390 transitions, 7482 flow [2023-09-01 12:47:33,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 390 transitions, 7376 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-09-01 12:47:33,360 INFO L231 Difference]: Finished difference. Result has 288 places, 349 transitions, 6302 flow [2023-09-01 12:47:33,360 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} [2023-09-01 12:47:33,360 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 229 predicate places. [2023-09-01 12:47:33,360 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 349 transitions, 6302 flow [2023-09-01 12:47:33,361 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) [2023-09-01 12:47:33,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:47:33,361 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] [2023-09-01 12:47:33,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-09-01 12:47:33,361 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)] === [2023-09-01 12:47:33,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:47:33,361 INFO L85 PathProgramCache]: Analyzing trace with hash 515200669, now seen corresponding path program 49 times [2023-09-01 12:47:33,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:47:33,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186654251] [2023-09-01 12:47:33,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:47:33,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:47:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:47:33,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:47:33,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:47:33,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186654251] [2023-09-01 12:47:33,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186654251] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:47:33,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:47:33,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:47:33,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592682056] [2023-09-01 12:47:33,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:47:33,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:47:33,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:47:33,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:47:33,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:47:33,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-09-01 12:47:33,763 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) [2023-09-01 12:47:33,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:47:33,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-09-01 12:47:33,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:47:36,411 INFO L130 PetriNetUnfolder]: 7269/14249 cut-off events. [2023-09-01 12:47:36,411 INFO L131 PetriNetUnfolder]: For 211347/211721 co-relation queries the response was YES. [2023-09-01 12:47:36,534 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. [2023-09-01 12:47:36,575 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 304 selfloop transitions, 48 changer transitions 19/396 dead transitions. [2023-09-01 12:47:36,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 396 transitions, 7604 flow [2023-09-01 12:47:36,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:47:36,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:47:36,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1141 transitions. [2023-09-01 12:47:36,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4971677559912854 [2023-09-01 12:47:36,577 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1141 transitions. [2023-09-01 12:47:36,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1141 transitions. [2023-09-01 12:47:36,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:47:36,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1141 transitions. [2023-09-01 12:47:36,578 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) [2023-09-01 12:47:36,579 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) [2023-09-01 12:47:36,579 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) [2023-09-01 12:47:36,580 INFO L175 Difference]: Start difference. First operand has 288 places, 349 transitions, 6302 flow. Second operand 9 states and 1141 transitions. [2023-09-01 12:47:36,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 396 transitions, 7604 flow [2023-09-01 12:47:37,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 396 transitions, 7511 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-09-01 12:47:37,954 INFO L231 Difference]: Finished difference. Result has 293 places, 355 transitions, 6472 flow [2023-09-01 12:47:37,955 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} [2023-09-01 12:47:37,955 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 234 predicate places. [2023-09-01 12:47:37,955 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 355 transitions, 6472 flow [2023-09-01 12:47:37,955 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) [2023-09-01 12:47:37,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:47:37,955 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] [2023-09-01 12:47:37,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-09-01 12:47:37,956 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)] === [2023-09-01 12:47:37,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:47:37,956 INFO L85 PathProgramCache]: Analyzing trace with hash 753856653, now seen corresponding path program 50 times [2023-09-01 12:47:37,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:47:37,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336602682] [2023-09-01 12:47:37,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:47:37,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:47:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:47:38,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:47:38,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:47:38,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336602682] [2023-09-01 12:47:38,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336602682] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:47:38,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:47:38,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:47:38,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038530561] [2023-09-01 12:47:38,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:47:38,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:47:38,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:47:38,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:47:38,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:47:38,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-09-01 12:47:38,537 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) [2023-09-01 12:47:38,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:47:38,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-09-01 12:47:38,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:47:41,200 INFO L130 PetriNetUnfolder]: 7022/13666 cut-off events. [2023-09-01 12:47:41,200 INFO L131 PetriNetUnfolder]: For 209097/209725 co-relation queries the response was YES. [2023-09-01 12:47:41,307 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. [2023-09-01 12:47:41,343 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 303 selfloop transitions, 44 changer transitions 13/400 dead transitions. [2023-09-01 12:47:41,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 400 transitions, 7652 flow [2023-09-01 12:47:41,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 12:47:41,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 12:47:41,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1270 transitions. [2023-09-01 12:47:41,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980392156862745 [2023-09-01 12:47:41,345 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1270 transitions. [2023-09-01 12:47:41,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1270 transitions. [2023-09-01 12:47:41,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:47:41,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1270 transitions. [2023-09-01 12:47:41,346 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) [2023-09-01 12:47:41,347 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) [2023-09-01 12:47:41,348 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) [2023-09-01 12:47:41,348 INFO L175 Difference]: Start difference. First operand has 293 places, 355 transitions, 6472 flow. Second operand 10 states and 1270 transitions. [2023-09-01 12:47:41,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 400 transitions, 7652 flow [2023-09-01 12:47:42,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 400 transitions, 7482 flow, removed 65 selfloop flow, removed 3 redundant places. [2023-09-01 12:47:42,418 INFO L231 Difference]: Finished difference. Result has 302 places, 355 transitions, 6430 flow [2023-09-01 12:47:42,418 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} [2023-09-01 12:47:42,418 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 243 predicate places. [2023-09-01 12:47:42,419 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 355 transitions, 6430 flow [2023-09-01 12:47:42,419 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) [2023-09-01 12:47:42,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:47:42,419 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] [2023-09-01 12:47:42,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-09-01 12:47:42,419 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)] === [2023-09-01 12:47:42,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:47:42,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1055685895, now seen corresponding path program 51 times [2023-09-01 12:47:42,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:47:42,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919095151] [2023-09-01 12:47:42,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:47:42,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:47:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:47:42,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:47:42,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:47:42,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919095151] [2023-09-01 12:47:42,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919095151] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:47:42,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:47:42,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:47:42,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150052823] [2023-09-01 12:47:42,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:47:42,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 12:47:42,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:47:42,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 12:47:42,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-09-01 12:47:42,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-09-01 12:47:42,960 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) [2023-09-01 12:47:42,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:47:42,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-09-01 12:47:42,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:47:45,245 INFO L130 PetriNetUnfolder]: 6210/12570 cut-off events. [2023-09-01 12:47:45,245 INFO L131 PetriNetUnfolder]: For 204491/204913 co-relation queries the response was YES. [2023-09-01 12:47:45,361 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. [2023-09-01 12:47:45,395 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 271 selfloop transitions, 33 changer transitions 31/387 dead transitions. [2023-09-01 12:47:45,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 387 transitions, 7429 flow [2023-09-01 12:47:45,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:47:45,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:47:45,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1029 transitions. [2023-09-01 12:47:45,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5044117647058823 [2023-09-01 12:47:45,396 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1029 transitions. [2023-09-01 12:47:45,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1029 transitions. [2023-09-01 12:47:45,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:47:45,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1029 transitions. [2023-09-01 12:47:45,398 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) [2023-09-01 12:47:45,399 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) [2023-09-01 12:47:45,399 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) [2023-09-01 12:47:45,399 INFO L175 Difference]: Start difference. First operand has 302 places, 355 transitions, 6430 flow. Second operand 8 states and 1029 transitions. [2023-09-01 12:47:45,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 387 transitions, 7429 flow [2023-09-01 12:47:46,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 387 transitions, 7298 flow, removed 18 selfloop flow, removed 9 redundant places. [2023-09-01 12:47:46,660 INFO L231 Difference]: Finished difference. Result has 302 places, 341 transitions, 6074 flow [2023-09-01 12:47:46,661 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} [2023-09-01 12:47:46,661 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 243 predicate places. [2023-09-01 12:47:46,661 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 341 transitions, 6074 flow [2023-09-01 12:47:46,661 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) [2023-09-01 12:47:46,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:47:46,661 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] [2023-09-01 12:47:46,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-09-01 12:47:46,661 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)] === [2023-09-01 12:47:46,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:47:46,662 INFO L85 PathProgramCache]: Analyzing trace with hash 321231551, now seen corresponding path program 52 times [2023-09-01 12:47:46,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:47:46,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332575373] [2023-09-01 12:47:46,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:47:46,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:47:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:47:46,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:47:46,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:47:46,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332575373] [2023-09-01 12:47:46,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332575373] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:47:46,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:47:46,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 12:47:46,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068015280] [2023-09-01 12:47:46,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:47:46,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 12:47:46,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:47:46,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 12:47:46,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-09-01 12:47:47,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-09-01 12:47:47,069 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) [2023-09-01 12:47:47,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:47:47,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-09-01 12:47:47,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:47:49,313 INFO L130 PetriNetUnfolder]: 5547/11081 cut-off events. [2023-09-01 12:47:49,313 INFO L131 PetriNetUnfolder]: For 187357/187769 co-relation queries the response was YES. [2023-09-01 12:47:49,389 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. [2023-09-01 12:47:49,415 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 278 selfloop transitions, 42 changer transitions 42/387 dead transitions. [2023-09-01 12:47:49,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 387 transitions, 7275 flow [2023-09-01 12:47:49,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 12:47:49,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 12:47:49,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1272 transitions. [2023-09-01 12:47:49,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4988235294117647 [2023-09-01 12:47:49,417 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1272 transitions. [2023-09-01 12:47:49,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1272 transitions. [2023-09-01 12:47:49,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:47:49,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1272 transitions. [2023-09-01 12:47:49,419 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) [2023-09-01 12:47:49,420 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) [2023-09-01 12:47:49,420 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) [2023-09-01 12:47:49,420 INFO L175 Difference]: Start difference. First operand has 302 places, 341 transitions, 6074 flow. Second operand 10 states and 1272 transitions. [2023-09-01 12:47:49,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 387 transitions, 7275 flow [2023-09-01 12:47:50,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 387 transitions, 7161 flow, removed 12 selfloop flow, removed 8 redundant places. [2023-09-01 12:47:50,270 INFO L231 Difference]: Finished difference. Result has 303 places, 327 transitions, 5812 flow [2023-09-01 12:47:50,271 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} [2023-09-01 12:47:50,271 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 244 predicate places. [2023-09-01 12:47:50,271 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 327 transitions, 5812 flow [2023-09-01 12:47:50,271 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) [2023-09-01 12:47:50,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:47:50,271 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] [2023-09-01 12:47:50,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-09-01 12:47:50,272 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)] === [2023-09-01 12:47:50,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:47:50,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1071552623, now seen corresponding path program 53 times [2023-09-01 12:47:50,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:47:50,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949358348] [2023-09-01 12:47:50,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:47:50,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:47:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:47:50,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:47:50,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:47:50,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949358348] [2023-09-01 12:47:50,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949358348] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:47:50,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:47:50,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 12:47:50,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387438960] [2023-09-01 12:47:50,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:47:50,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 12:47:50,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:47:50,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 12:47:50,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-09-01 12:47:50,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-09-01 12:47:50,711 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) [2023-09-01 12:47:50,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:47:50,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-09-01 12:47:50,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:47:53,048 INFO L130 PetriNetUnfolder]: 5448/10970 cut-off events. [2023-09-01 12:47:53,048 INFO L131 PetriNetUnfolder]: For 179775/180156 co-relation queries the response was YES. [2023-09-01 12:47:53,130 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. [2023-09-01 12:47:53,160 INFO L137 encePairwiseOnDemand]: 241/255 looper letters, 298 selfloop transitions, 103 changer transitions 37/472 dead transitions. [2023-09-01 12:47:53,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 472 transitions, 8571 flow [2023-09-01 12:47:53,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 12:47:53,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 12:47:53,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1463 transitions. [2023-09-01 12:47:53,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215686274509804 [2023-09-01 12:47:53,161 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1463 transitions. [2023-09-01 12:47:53,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1463 transitions. [2023-09-01 12:47:53,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:47:53,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1463 transitions. [2023-09-01 12:47:53,163 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) [2023-09-01 12:47:53,165 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) [2023-09-01 12:47:53,165 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) [2023-09-01 12:47:53,165 INFO L175 Difference]: Start difference. First operand has 303 places, 327 transitions, 5812 flow. Second operand 11 states and 1463 transitions. [2023-09-01 12:47:53,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 472 transitions, 8571 flow [2023-09-01 12:47:54,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 472 transitions, 8360 flow, removed 45 selfloop flow, removed 11 redundant places. [2023-09-01 12:47:54,033 INFO L231 Difference]: Finished difference. Result has 304 places, 348 transitions, 6444 flow [2023-09-01 12:47:54,034 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} [2023-09-01 12:47:54,034 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 245 predicate places. [2023-09-01 12:47:54,034 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 348 transitions, 6444 flow [2023-09-01 12:47:54,034 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) [2023-09-01 12:47:54,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:47:54,034 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] [2023-09-01 12:47:54,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-09-01 12:47:54,035 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)] === [2023-09-01 12:47:54,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:47:54,035 INFO L85 PathProgramCache]: Analyzing trace with hash -757939431, now seen corresponding path program 54 times [2023-09-01 12:47:54,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:47:54,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069305533] [2023-09-01 12:47:54,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:47:54,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:47:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:47:54,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:47:54,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:47:54,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069305533] [2023-09-01 12:47:54,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069305533] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:47:54,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:47:54,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:47:54,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799524814] [2023-09-01 12:47:54,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:47:54,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 12:47:54,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:47:54,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 12:47:54,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-09-01 12:47:54,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-09-01 12:47:54,371 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) [2023-09-01 12:47:54,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:47:54,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-09-01 12:47:54,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:47:56,636 INFO L130 PetriNetUnfolder]: 5296/10649 cut-off events. [2023-09-01 12:47:56,636 INFO L131 PetriNetUnfolder]: For 192893/193453 co-relation queries the response was YES. [2023-09-01 12:47:56,718 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. [2023-09-01 12:47:56,744 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 279 selfloop transitions, 29 changer transitions 34/391 dead transitions. [2023-09-01 12:47:56,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 391 transitions, 7589 flow [2023-09-01 12:47:56,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:47:56,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:47:56,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1036 transitions. [2023-09-01 12:47:56,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078431372549019 [2023-09-01 12:47:56,746 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1036 transitions. [2023-09-01 12:47:56,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1036 transitions. [2023-09-01 12:47:56,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:47:56,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1036 transitions. [2023-09-01 12:47:56,747 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) [2023-09-01 12:47:56,749 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) [2023-09-01 12:47:56,749 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) [2023-09-01 12:47:56,749 INFO L175 Difference]: Start difference. First operand has 304 places, 348 transitions, 6444 flow. Second operand 8 states and 1036 transitions. [2023-09-01 12:47:56,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 391 transitions, 7589 flow [2023-09-01 12:47:57,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 391 transitions, 7333 flow, removed 96 selfloop flow, removed 6 redundant places. [2023-09-01 12:47:57,629 INFO L231 Difference]: Finished difference. Result has 308 places, 336 transitions, 6056 flow [2023-09-01 12:47:57,630 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} [2023-09-01 12:47:57,630 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 249 predicate places. [2023-09-01 12:47:57,630 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 336 transitions, 6056 flow [2023-09-01 12:47:57,631 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) [2023-09-01 12:47:57,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:47:57,631 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] [2023-09-01 12:47:57,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-09-01 12:47:57,631 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)] === [2023-09-01 12:47:57,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:47:57,632 INFO L85 PathProgramCache]: Analyzing trace with hash -352652421, now seen corresponding path program 55 times [2023-09-01 12:47:57,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:47:57,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42489804] [2023-09-01 12:47:57,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:47:57,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:47:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:47:58,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:47:58,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:47:58,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42489804] [2023-09-01 12:47:58,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42489804] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:47:58,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:47:58,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 12:47:58,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041935078] [2023-09-01 12:47:58,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:47:58,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:47:58,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:47:58,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:47:58,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-09-01 12:47:58,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-09-01 12:47:58,217 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) [2023-09-01 12:47:58,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:47:58,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-09-01 12:47:58,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:00,243 INFO L130 PetriNetUnfolder]: 5037/10312 cut-off events. [2023-09-01 12:48:00,243 INFO L131 PetriNetUnfolder]: For 172762/173214 co-relation queries the response was YES. [2023-09-01 12:48:00,326 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. [2023-09-01 12:48:00,351 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 269 selfloop transitions, 21 changer transitions 26/377 dead transitions. [2023-09-01 12:48:00,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 377 transitions, 7050 flow [2023-09-01 12:48:00,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:48:00,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:48:00,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1036 transitions. [2023-09-01 12:48:00,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078431372549019 [2023-09-01 12:48:00,352 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1036 transitions. [2023-09-01 12:48:00,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1036 transitions. [2023-09-01 12:48:00,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:00,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1036 transitions. [2023-09-01 12:48:00,353 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) [2023-09-01 12:48:00,354 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) [2023-09-01 12:48:00,354 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) [2023-09-01 12:48:00,354 INFO L175 Difference]: Start difference. First operand has 308 places, 336 transitions, 6056 flow. Second operand 8 states and 1036 transitions. [2023-09-01 12:48:00,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 377 transitions, 7050 flow [2023-09-01 12:48:01,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 377 transitions, 6983 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-09-01 12:48:01,120 INFO L231 Difference]: Finished difference. Result has 308 places, 332 transitions, 5965 flow [2023-09-01 12:48:01,120 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} [2023-09-01 12:48:01,121 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 249 predicate places. [2023-09-01 12:48:01,121 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 332 transitions, 5965 flow [2023-09-01 12:48:01,121 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) [2023-09-01 12:48:01,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:01,121 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] [2023-09-01 12:48:01,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-09-01 12:48:01,121 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)] === [2023-09-01 12:48:01,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:01,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1088376391, now seen corresponding path program 56 times [2023-09-01 12:48:01,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:01,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635059336] [2023-09-01 12:48:01,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:01,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:01,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:01,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:01,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635059336] [2023-09-01 12:48:01,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635059336] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:01,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:01,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 12:48:01,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685113398] [2023-09-01 12:48:01,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:01,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:48:01,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:01,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:48:01,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:48:01,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-09-01 12:48:01,726 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) [2023-09-01 12:48:01,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:01,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-09-01 12:48:01,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:03,622 INFO L130 PetriNetUnfolder]: 4952/10010 cut-off events. [2023-09-01 12:48:03,622 INFO L131 PetriNetUnfolder]: For 164098/164498 co-relation queries the response was YES. [2023-09-01 12:48:03,701 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. [2023-09-01 12:48:03,724 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 279 selfloop transitions, 31 changer transitions 21/371 dead transitions. [2023-09-01 12:48:03,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 371 transitions, 6961 flow [2023-09-01 12:48:03,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:48:03,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:48:03,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1153 transitions. [2023-09-01 12:48:03,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50239651416122 [2023-09-01 12:48:03,726 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1153 transitions. [2023-09-01 12:48:03,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1153 transitions. [2023-09-01 12:48:03,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:03,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1153 transitions. [2023-09-01 12:48:03,727 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) [2023-09-01 12:48:03,728 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) [2023-09-01 12:48:03,728 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) [2023-09-01 12:48:03,728 INFO L175 Difference]: Start difference. First operand has 308 places, 332 transitions, 5965 flow. Second operand 9 states and 1153 transitions. [2023-09-01 12:48:03,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 371 transitions, 6961 flow [2023-09-01 12:48:04,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 371 transitions, 6900 flow, removed 8 selfloop flow, removed 8 redundant places. [2023-09-01 12:48:04,428 INFO L231 Difference]: Finished difference. Result has 308 places, 326 transitions, 5870 flow [2023-09-01 12:48:04,428 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} [2023-09-01 12:48:04,428 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 249 predicate places. [2023-09-01 12:48:04,428 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 326 transitions, 5870 flow [2023-09-01 12:48:04,429 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) [2023-09-01 12:48:04,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:04,429 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] [2023-09-01 12:48:04,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-09-01 12:48:04,429 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)] === [2023-09-01 12:48:04,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:04,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1636349103, now seen corresponding path program 57 times [2023-09-01 12:48:04,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:04,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844353731] [2023-09-01 12:48:04,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:04,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:04,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:04,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:04,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844353731] [2023-09-01 12:48:04,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844353731] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:04,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:04,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 12:48:04,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818173944] [2023-09-01 12:48:04,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:04,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:48:04,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:04,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:48:04,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:48:05,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-09-01 12:48:05,036 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) [2023-09-01 12:48:05,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:05,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-09-01 12:48:05,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:06,786 INFO L130 PetriNetUnfolder]: 4554/9493 cut-off events. [2023-09-01 12:48:06,786 INFO L131 PetriNetUnfolder]: For 158438/158832 co-relation queries the response was YES. [2023-09-01 12:48:06,861 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. [2023-09-01 12:48:06,884 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 273 selfloop transitions, 22 changer transitions 19/360 dead transitions. [2023-09-01 12:48:06,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 360 transitions, 6787 flow [2023-09-01 12:48:06,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:48:06,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:48:06,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1021 transitions. [2023-09-01 12:48:06,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5004901960784314 [2023-09-01 12:48:06,886 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1021 transitions. [2023-09-01 12:48:06,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1021 transitions. [2023-09-01 12:48:06,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:06,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1021 transitions. [2023-09-01 12:48:06,887 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) [2023-09-01 12:48:06,887 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) [2023-09-01 12:48:06,888 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) [2023-09-01 12:48:06,888 INFO L175 Difference]: Start difference. First operand has 308 places, 326 transitions, 5870 flow. Second operand 8 states and 1021 transitions. [2023-09-01 12:48:06,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 360 transitions, 6787 flow [2023-09-01 12:48:07,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 360 transitions, 6671 flow, removed 25 selfloop flow, removed 9 redundant places. [2023-09-01 12:48:07,594 INFO L231 Difference]: Finished difference. Result has 306 places, 324 transitions, 5767 flow [2023-09-01 12:48:07,594 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} [2023-09-01 12:48:07,594 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 247 predicate places. [2023-09-01 12:48:07,594 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 324 transitions, 5767 flow [2023-09-01 12:48:07,594 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) [2023-09-01 12:48:07,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:07,594 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] [2023-09-01 12:48:07,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-09-01 12:48:07,595 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)] === [2023-09-01 12:48:07,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:07,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1709936255, now seen corresponding path program 58 times [2023-09-01 12:48:07,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:07,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815481061] [2023-09-01 12:48:07,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:07,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:08,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:08,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:08,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815481061] [2023-09-01 12:48:08,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815481061] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:08,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:08,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 12:48:08,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808986816] [2023-09-01 12:48:08,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:08,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:48:08,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:08,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:48:08,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:48:08,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-09-01 12:48:08,132 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) [2023-09-01 12:48:08,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:08,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-09-01 12:48:08,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:09,846 INFO L130 PetriNetUnfolder]: 4397/9138 cut-off events. [2023-09-01 12:48:09,846 INFO L131 PetriNetUnfolder]: For 155653/156071 co-relation queries the response was YES. [2023-09-01 12:48:09,912 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. [2023-09-01 12:48:09,933 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 254 selfloop transitions, 22 changer transitions 17/354 dead transitions. [2023-09-01 12:48:09,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 354 transitions, 6591 flow [2023-09-01 12:48:09,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:48:09,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:48:09,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1025 transitions. [2023-09-01 12:48:09,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5024509803921569 [2023-09-01 12:48:09,935 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1025 transitions. [2023-09-01 12:48:09,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1025 transitions. [2023-09-01 12:48:09,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:09,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1025 transitions. [2023-09-01 12:48:09,936 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) [2023-09-01 12:48:09,938 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) [2023-09-01 12:48:09,938 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) [2023-09-01 12:48:09,938 INFO L175 Difference]: Start difference. First operand has 306 places, 324 transitions, 5767 flow. Second operand 8 states and 1025 transitions. [2023-09-01 12:48:09,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 354 transitions, 6591 flow [2023-09-01 12:48:10,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 354 transitions, 6511 flow, removed 21 selfloop flow, removed 8 redundant places. [2023-09-01 12:48:10,564 INFO L231 Difference]: Finished difference. Result has 304 places, 320 transitions, 5691 flow [2023-09-01 12:48:10,565 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} [2023-09-01 12:48:10,565 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 245 predicate places. [2023-09-01 12:48:10,565 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 320 transitions, 5691 flow [2023-09-01 12:48:10,565 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) [2023-09-01 12:48:10,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:10,565 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] [2023-09-01 12:48:10,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-09-01 12:48:10,565 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)] === [2023-09-01 12:48:10,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:10,567 INFO L85 PathProgramCache]: Analyzing trace with hash 47658505, now seen corresponding path program 59 times [2023-09-01 12:48:10,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:10,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101084095] [2023-09-01 12:48:10,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:10,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:10,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:10,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:10,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101084095] [2023-09-01 12:48:10,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101084095] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:10,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:10,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 12:48:10,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827606232] [2023-09-01 12:48:10,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:10,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:48:10,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:10,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:48:10,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:48:10,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-09-01 12:48:10,984 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) [2023-09-01 12:48:10,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:10,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-09-01 12:48:10,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:12,882 INFO L130 PetriNetUnfolder]: 4370/9059 cut-off events. [2023-09-01 12:48:12,882 INFO L131 PetriNetUnfolder]: For 150549/150967 co-relation queries the response was YES. [2023-09-01 12:48:12,941 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. [2023-09-01 12:48:12,962 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 247 selfloop transitions, 29 changer transitions 14/351 dead transitions. [2023-09-01 12:48:12,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 351 transitions, 6525 flow [2023-09-01 12:48:12,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:48:12,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:48:12,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1028 transitions. [2023-09-01 12:48:12,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503921568627451 [2023-09-01 12:48:12,964 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1028 transitions. [2023-09-01 12:48:12,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1028 transitions. [2023-09-01 12:48:12,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:12,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1028 transitions. [2023-09-01 12:48:12,965 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) [2023-09-01 12:48:12,966 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) [2023-09-01 12:48:12,966 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) [2023-09-01 12:48:12,966 INFO L175 Difference]: Start difference. First operand has 304 places, 320 transitions, 5691 flow. Second operand 8 states and 1028 transitions. [2023-09-01 12:48:12,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 351 transitions, 6525 flow [2023-09-01 12:48:13,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 351 transitions, 6473 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-09-01 12:48:13,583 INFO L231 Difference]: Finished difference. Result has 304 places, 314 transitions, 5592 flow [2023-09-01 12:48:13,583 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} [2023-09-01 12:48:13,584 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 245 predicate places. [2023-09-01 12:48:13,584 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 314 transitions, 5592 flow [2023-09-01 12:48:13,584 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) [2023-09-01 12:48:13,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:13,584 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] [2023-09-01 12:48:13,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-09-01 12:48:13,584 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)] === [2023-09-01 12:48:13,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:13,585 INFO L85 PathProgramCache]: Analyzing trace with hash -762981023, now seen corresponding path program 60 times [2023-09-01 12:48:13,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:13,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242105294] [2023-09-01 12:48:13,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:13,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:13,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:13,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:13,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242105294] [2023-09-01 12:48:13,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242105294] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:13,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:13,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 12:48:13,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752896806] [2023-09-01 12:48:13,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:13,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:48:13,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:13,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:48:13,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:48:14,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-09-01 12:48:14,055 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) [2023-09-01 12:48:14,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:14,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-09-01 12:48:14,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:15,750 INFO L130 PetriNetUnfolder]: 4336/8963 cut-off events. [2023-09-01 12:48:15,750 INFO L131 PetriNetUnfolder]: For 147784/148164 co-relation queries the response was YES. [2023-09-01 12:48:15,832 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. [2023-09-01 12:48:15,855 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 261 selfloop transitions, 20 changer transitions 17/344 dead transitions. [2023-09-01 12:48:15,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 344 transitions, 6415 flow [2023-09-01 12:48:15,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:48:15,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:48:15,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1021 transitions. [2023-09-01 12:48:15,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5004901960784314 [2023-09-01 12:48:15,857 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1021 transitions. [2023-09-01 12:48:15,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1021 transitions. [2023-09-01 12:48:15,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:15,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1021 transitions. [2023-09-01 12:48:15,858 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) [2023-09-01 12:48:15,859 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) [2023-09-01 12:48:15,859 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) [2023-09-01 12:48:15,859 INFO L175 Difference]: Start difference. First operand has 304 places, 314 transitions, 5592 flow. Second operand 8 states and 1021 transitions. [2023-09-01 12:48:15,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 344 transitions, 6415 flow [2023-09-01 12:48:16,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 344 transitions, 6293 flow, removed 11 selfloop flow, removed 11 redundant places. [2023-09-01 12:48:16,655 INFO L231 Difference]: Finished difference. Result has 301 places, 305 transitions, 5357 flow [2023-09-01 12:48:16,656 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} [2023-09-01 12:48:16,656 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 242 predicate places. [2023-09-01 12:48:16,656 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 305 transitions, 5357 flow [2023-09-01 12:48:16,656 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) [2023-09-01 12:48:16,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:16,657 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] [2023-09-01 12:48:16,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-09-01 12:48:16,657 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)] === [2023-09-01 12:48:16,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:16,657 INFO L85 PathProgramCache]: Analyzing trace with hash 200999169, now seen corresponding path program 61 times [2023-09-01 12:48:16,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:16,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099083192] [2023-09-01 12:48:16,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:16,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:16,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:16,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:16,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099083192] [2023-09-01 12:48:16,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099083192] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:16,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:16,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:48:16,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131632109] [2023-09-01 12:48:16,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:16,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:48:16,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:16,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:48:16,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:48:16,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-09-01 12:48:16,992 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) [2023-09-01 12:48:16,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:16,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-09-01 12:48:16,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:18,611 INFO L130 PetriNetUnfolder]: 4102/8379 cut-off events. [2023-09-01 12:48:18,612 INFO L131 PetriNetUnfolder]: For 135007/135371 co-relation queries the response was YES. [2023-09-01 12:48:18,686 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. [2023-09-01 12:48:18,706 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 232 selfloop transitions, 25 changer transitions 36/342 dead transitions. [2023-09-01 12:48:18,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 342 transitions, 6267 flow [2023-09-01 12:48:18,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:48:18,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:48:18,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1156 transitions. [2023-09-01 12:48:18,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037037037037037 [2023-09-01 12:48:18,708 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1156 transitions. [2023-09-01 12:48:18,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1156 transitions. [2023-09-01 12:48:18,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:18,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1156 transitions. [2023-09-01 12:48:18,709 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) [2023-09-01 12:48:18,710 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) [2023-09-01 12:48:18,710 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) [2023-09-01 12:48:18,710 INFO L175 Difference]: Start difference. First operand has 301 places, 305 transitions, 5357 flow. Second operand 9 states and 1156 transitions. [2023-09-01 12:48:18,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 342 transitions, 6267 flow [2023-09-01 12:48:19,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 342 transitions, 6177 flow, removed 19 selfloop flow, removed 7 redundant places. [2023-09-01 12:48:19,235 INFO L231 Difference]: Finished difference. Result has 302 places, 285 transitions, 4971 flow [2023-09-01 12:48:19,235 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} [2023-09-01 12:48:19,235 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 243 predicate places. [2023-09-01 12:48:19,236 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 285 transitions, 4971 flow [2023-09-01 12:48:19,236 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) [2023-09-01 12:48:19,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:19,236 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] [2023-09-01 12:48:19,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-09-01 12:48:19,236 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)] === [2023-09-01 12:48:19,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:19,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1802658153, now seen corresponding path program 62 times [2023-09-01 12:48:19,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:19,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323316781] [2023-09-01 12:48:19,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:19,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:19,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:19,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:19,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323316781] [2023-09-01 12:48:19,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323316781] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:19,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:19,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:48:19,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434065146] [2023-09-01 12:48:19,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:19,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:48:19,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:19,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:48:19,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:48:19,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-09-01 12:48:19,597 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) [2023-09-01 12:48:19,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:19,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-09-01 12:48:19,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:21,048 INFO L130 PetriNetUnfolder]: 3915/7938 cut-off events. [2023-09-01 12:48:21,048 INFO L131 PetriNetUnfolder]: For 121237/121563 co-relation queries the response was YES. [2023-09-01 12:48:21,101 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. [2023-09-01 12:48:21,119 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 254 selfloop transitions, 15 changer transitions 27/321 dead transitions. [2023-09-01 12:48:21,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 321 transitions, 5853 flow [2023-09-01 12:48:21,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:48:21,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:48:21,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1136 transitions. [2023-09-01 12:48:21,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49498910675381264 [2023-09-01 12:48:21,121 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1136 transitions. [2023-09-01 12:48:21,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1136 transitions. [2023-09-01 12:48:21,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:21,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1136 transitions. [2023-09-01 12:48:21,122 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) [2023-09-01 12:48:21,123 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) [2023-09-01 12:48:21,123 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) [2023-09-01 12:48:21,123 INFO L175 Difference]: Start difference. First operand has 302 places, 285 transitions, 4971 flow. Second operand 9 states and 1136 transitions. [2023-09-01 12:48:21,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 321 transitions, 5853 flow [2023-09-01 12:48:21,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 321 transitions, 5680 flow, removed 27 selfloop flow, removed 17 redundant places. [2023-09-01 12:48:21,574 INFO L231 Difference]: Finished difference. Result has 293 places, 273 transitions, 4638 flow [2023-09-01 12:48:21,574 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} [2023-09-01 12:48:21,574 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 234 predicate places. [2023-09-01 12:48:21,574 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 273 transitions, 4638 flow [2023-09-01 12:48:21,575 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) [2023-09-01 12:48:21,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:21,575 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] [2023-09-01 12:48:21,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-09-01 12:48:21,575 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)] === [2023-09-01 12:48:21,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:21,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1425807513, now seen corresponding path program 63 times [2023-09-01 12:48:21,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:21,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785367121] [2023-09-01 12:48:21,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:21,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:21,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:21,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:21,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785367121] [2023-09-01 12:48:21,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785367121] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:21,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:21,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 12:48:21,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126974841] [2023-09-01 12:48:21,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:21,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:48:21,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:21,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:48:21,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:48:22,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-09-01 12:48:22,012 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) [2023-09-01 12:48:22,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:22,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-09-01 12:48:22,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:23,389 INFO L130 PetriNetUnfolder]: 3801/7724 cut-off events. [2023-09-01 12:48:23,389 INFO L131 PetriNetUnfolder]: For 112320/112644 co-relation queries the response was YES. [2023-09-01 12:48:23,454 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. [2023-09-01 12:48:23,472 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 249 selfloop transitions, 21 changer transitions 10/305 dead transitions. [2023-09-01 12:48:23,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 305 transitions, 5503 flow [2023-09-01 12:48:23,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:48:23,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:48:23,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1131 transitions. [2023-09-01 12:48:23,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928104575163399 [2023-09-01 12:48:23,474 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1131 transitions. [2023-09-01 12:48:23,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1131 transitions. [2023-09-01 12:48:23,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:23,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1131 transitions. [2023-09-01 12:48:23,475 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) [2023-09-01 12:48:23,476 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) [2023-09-01 12:48:23,477 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) [2023-09-01 12:48:23,477 INFO L175 Difference]: Start difference. First operand has 293 places, 273 transitions, 4638 flow. Second operand 9 states and 1131 transitions. [2023-09-01 12:48:23,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 305 transitions, 5503 flow [2023-09-01 12:48:23,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 305 transitions, 5440 flow, removed 13 selfloop flow, removed 12 redundant places. [2023-09-01 12:48:23,933 INFO L231 Difference]: Finished difference. Result has 286 places, 274 transitions, 4666 flow [2023-09-01 12:48:23,933 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} [2023-09-01 12:48:23,933 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 227 predicate places. [2023-09-01 12:48:23,934 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 274 transitions, 4666 flow [2023-09-01 12:48:23,934 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) [2023-09-01 12:48:23,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:23,934 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] [2023-09-01 12:48:23,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-09-01 12:48:23,934 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)] === [2023-09-01 12:48:23,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:23,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1709285973, now seen corresponding path program 64 times [2023-09-01 12:48:23,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:23,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175093578] [2023-09-01 12:48:23,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:23,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:24,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:24,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:24,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175093578] [2023-09-01 12:48:24,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175093578] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:24,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:24,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:48:24,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099180875] [2023-09-01 12:48:24,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:24,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:48:24,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:24,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:48:24,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:48:24,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-09-01 12:48:24,298 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) [2023-09-01 12:48:24,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:24,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-09-01 12:48:24,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:25,666 INFO L130 PetriNetUnfolder]: 3793/7712 cut-off events. [2023-09-01 12:48:25,666 INFO L131 PetriNetUnfolder]: For 111333/111657 co-relation queries the response was YES. [2023-09-01 12:48:25,710 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. [2023-09-01 12:48:25,727 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 242 selfloop transitions, 16 changer transitions 22/305 dead transitions. [2023-09-01 12:48:25,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 305 transitions, 5466 flow [2023-09-01 12:48:25,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:48:25,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:48:25,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1130 transitions. [2023-09-01 12:48:25,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4923747276688453 [2023-09-01 12:48:25,728 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1130 transitions. [2023-09-01 12:48:25,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1130 transitions. [2023-09-01 12:48:25,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:25,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1130 transitions. [2023-09-01 12:48:25,730 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) [2023-09-01 12:48:25,731 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) [2023-09-01 12:48:25,731 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) [2023-09-01 12:48:25,731 INFO L175 Difference]: Start difference. First operand has 286 places, 274 transitions, 4666 flow. Second operand 9 states and 1130 transitions. [2023-09-01 12:48:25,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 305 transitions, 5466 flow [2023-09-01 12:48:26,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 305 transitions, 5379 flow, removed 23 selfloop flow, removed 6 redundant places. [2023-09-01 12:48:26,152 INFO L231 Difference]: Finished difference. Result has 288 places, 267 transitions, 4468 flow [2023-09-01 12:48:26,152 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} [2023-09-01 12:48:26,153 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 229 predicate places. [2023-09-01 12:48:26,153 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 267 transitions, 4468 flow [2023-09-01 12:48:26,153 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) [2023-09-01 12:48:26,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:26,153 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] [2023-09-01 12:48:26,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-09-01 12:48:26,154 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)] === [2023-09-01 12:48:26,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:26,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1127247093, now seen corresponding path program 65 times [2023-09-01 12:48:26,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:26,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466397944] [2023-09-01 12:48:26,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:26,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:26,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:26,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:26,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466397944] [2023-09-01 12:48:26,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466397944] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:26,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:26,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 12:48:26,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744491233] [2023-09-01 12:48:26,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:26,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:48:26,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:26,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:48:26,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:48:26,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-09-01 12:48:26,643 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) [2023-09-01 12:48:26,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:26,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-09-01 12:48:26,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:27,990 INFO L130 PetriNetUnfolder]: 3547/7404 cut-off events. [2023-09-01 12:48:27,990 INFO L131 PetriNetUnfolder]: For 113387/113735 co-relation queries the response was YES. [2023-09-01 12:48:28,049 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. [2023-09-01 12:48:28,068 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 210 selfloop transitions, 11 changer transitions 31/294 dead transitions. [2023-09-01 12:48:28,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 294 transitions, 5131 flow [2023-09-01 12:48:28,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:48:28,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:48:28,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1014 transitions. [2023-09-01 12:48:28,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4970588235294118 [2023-09-01 12:48:28,069 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1014 transitions. [2023-09-01 12:48:28,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1014 transitions. [2023-09-01 12:48:28,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:28,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1014 transitions. [2023-09-01 12:48:28,070 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) [2023-09-01 12:48:28,071 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) [2023-09-01 12:48:28,071 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) [2023-09-01 12:48:28,072 INFO L175 Difference]: Start difference. First operand has 288 places, 267 transitions, 4468 flow. Second operand 8 states and 1014 transitions. [2023-09-01 12:48:28,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 294 transitions, 5131 flow [2023-09-01 12:48:28,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 294 transitions, 5077 flow, removed 11 selfloop flow, removed 8 redundant places. [2023-09-01 12:48:28,511 INFO L231 Difference]: Finished difference. Result has 282 places, 254 transitions, 4201 flow [2023-09-01 12:48:28,511 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} [2023-09-01 12:48:28,512 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 223 predicate places. [2023-09-01 12:48:28,512 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 254 transitions, 4201 flow [2023-09-01 12:48:28,512 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) [2023-09-01 12:48:28,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:28,512 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] [2023-09-01 12:48:28,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-09-01 12:48:28,512 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)] === [2023-09-01 12:48:28,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:28,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1762081559, now seen corresponding path program 66 times [2023-09-01 12:48:28,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:28,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783454194] [2023-09-01 12:48:28,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:28,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:28,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:28,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:28,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783454194] [2023-09-01 12:48:28,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783454194] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:28,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:28,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:48:28,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947552046] [2023-09-01 12:48:28,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:28,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 12:48:28,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:28,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 12:48:28,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-09-01 12:48:28,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 255 [2023-09-01 12:48:28,980 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) [2023-09-01 12:48:28,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:28,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 255 [2023-09-01 12:48:28,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:30,075 INFO L130 PetriNetUnfolder]: 3439/7129 cut-off events. [2023-09-01 12:48:30,076 INFO L131 PetriNetUnfolder]: For 99911/100235 co-relation queries the response was YES. [2023-09-01 12:48:30,136 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. [2023-09-01 12:48:30,154 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 187 selfloop transitions, 12 changer transitions 20/274 dead transitions. [2023-09-01 12:48:30,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 274 transitions, 4750 flow [2023-09-01 12:48:30,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:48:30,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:48:30,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1021 transitions. [2023-09-01 12:48:30,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5004901960784314 [2023-09-01 12:48:30,155 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1021 transitions. [2023-09-01 12:48:30,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1021 transitions. [2023-09-01 12:48:30,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:30,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1021 transitions. [2023-09-01 12:48:30,156 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) [2023-09-01 12:48:30,157 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) [2023-09-01 12:48:30,157 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) [2023-09-01 12:48:30,157 INFO L175 Difference]: Start difference. First operand has 282 places, 254 transitions, 4201 flow. Second operand 8 states and 1021 transitions. [2023-09-01 12:48:30,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 274 transitions, 4750 flow [2023-09-01 12:48:30,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 274 transitions, 4657 flow, removed 16 selfloop flow, removed 12 redundant places. [2023-09-01 12:48:30,550 INFO L231 Difference]: Finished difference. Result has 269 places, 243 transitions, 3917 flow [2023-09-01 12:48:30,550 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} [2023-09-01 12:48:30,550 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 210 predicate places. [2023-09-01 12:48:30,550 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 243 transitions, 3917 flow [2023-09-01 12:48:30,550 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) [2023-09-01 12:48:30,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:30,551 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] [2023-09-01 12:48:30,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-09-01 12:48:30,551 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)] === [2023-09-01 12:48:30,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:30,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1729397019, now seen corresponding path program 67 times [2023-09-01 12:48:30,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:30,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726360554] [2023-09-01 12:48:30,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:30,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:30,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:30,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:30,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726360554] [2023-09-01 12:48:30,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726360554] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:30,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:30,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 12:48:30,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994870715] [2023-09-01 12:48:30,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:30,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 12:48:30,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:30,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 12:48:30,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-09-01 12:48:31,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-09-01 12:48:31,018 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) [2023-09-01 12:48:31,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:31,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-09-01 12:48:31,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:32,049 INFO L130 PetriNetUnfolder]: 3463/7090 cut-off events. [2023-09-01 12:48:32,049 INFO L131 PetriNetUnfolder]: For 91827/92104 co-relation queries the response was YES. [2023-09-01 12:48:32,111 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. [2023-09-01 12:48:32,128 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 211 selfloop transitions, 6 changer transitions 29/277 dead transitions. [2023-09-01 12:48:32,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 277 transitions, 4637 flow [2023-09-01 12:48:32,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:48:32,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:48:32,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1134 transitions. [2023-09-01 12:48:32,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49411764705882355 [2023-09-01 12:48:32,130 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1134 transitions. [2023-09-01 12:48:32,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1134 transitions. [2023-09-01 12:48:32,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:32,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1134 transitions. [2023-09-01 12:48:32,131 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) [2023-09-01 12:48:32,132 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) [2023-09-01 12:48:32,132 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) [2023-09-01 12:48:32,132 INFO L175 Difference]: Start difference. First operand has 269 places, 243 transitions, 3917 flow. Second operand 9 states and 1134 transitions. [2023-09-01 12:48:32,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 277 transitions, 4637 flow [2023-09-01 12:48:32,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 277 transitions, 4577 flow, removed 16 selfloop flow, removed 7 redundant places. [2023-09-01 12:48:32,606 INFO L231 Difference]: Finished difference. Result has 267 places, 237 transitions, 3765 flow [2023-09-01 12:48:32,606 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} [2023-09-01 12:48:32,606 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 208 predicate places. [2023-09-01 12:48:32,606 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 237 transitions, 3765 flow [2023-09-01 12:48:32,607 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) [2023-09-01 12:48:32,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:32,607 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] [2023-09-01 12:48:32,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-09-01 12:48:32,607 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)] === [2023-09-01 12:48:32,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:32,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1830566703, now seen corresponding path program 68 times [2023-09-01 12:48:32,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:32,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286901456] [2023-09-01 12:48:32,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:32,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:32,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:32,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:32,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286901456] [2023-09-01 12:48:32,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286901456] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:32,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:32,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 12:48:32,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646010187] [2023-09-01 12:48:32,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:32,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:48:32,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:32,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:48:32,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:48:33,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 255 [2023-09-01 12:48:33,037 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) [2023-09-01 12:48:33,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:33,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 255 [2023-09-01 12:48:33,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:33,965 INFO L130 PetriNetUnfolder]: 3143/6481 cut-off events. [2023-09-01 12:48:33,965 INFO L131 PetriNetUnfolder]: For 82185/82439 co-relation queries the response was YES. [2023-09-01 12:48:34,020 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. [2023-09-01 12:48:34,035 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 154 selfloop transitions, 16 changer transitions 39/251 dead transitions. [2023-09-01 12:48:34,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 251 transitions, 4227 flow [2023-09-01 12:48:34,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 12:48:34,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 12:48:34,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 780 transitions. [2023-09-01 12:48:34,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2023-09-01 12:48:34,036 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 780 transitions. [2023-09-01 12:48:34,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 780 transitions. [2023-09-01 12:48:34,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:34,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 780 transitions. [2023-09-01 12:48:34,037 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) [2023-09-01 12:48:34,037 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) [2023-09-01 12:48:34,037 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) [2023-09-01 12:48:34,038 INFO L175 Difference]: Start difference. First operand has 267 places, 237 transitions, 3765 flow. Second operand 6 states and 780 transitions. [2023-09-01 12:48:34,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 251 transitions, 4227 flow [2023-09-01 12:48:34,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 251 transitions, 4034 flow, removed 27 selfloop flow, removed 16 redundant places. [2023-09-01 12:48:34,501 INFO L231 Difference]: Finished difference. Result has 248 places, 203 transitions, 3185 flow [2023-09-01 12:48:34,501 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} [2023-09-01 12:48:34,501 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 189 predicate places. [2023-09-01 12:48:34,502 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 203 transitions, 3185 flow [2023-09-01 12:48:34,502 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) [2023-09-01 12:48:34,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:34,502 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] [2023-09-01 12:48:34,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-09-01 12:48:34,502 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)] === [2023-09-01 12:48:34,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:34,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1563865877, now seen corresponding path program 69 times [2023-09-01 12:48:34,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:34,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194033054] [2023-09-01 12:48:34,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:34,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:34,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:34,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:34,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194033054] [2023-09-01 12:48:34,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194033054] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:34,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:34,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:48:34,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740832050] [2023-09-01 12:48:34,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:34,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:48:34,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:34,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:48:34,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:48:34,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-09-01 12:48:34,895 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) [2023-09-01 12:48:34,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:34,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-09-01 12:48:34,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:35,852 INFO L130 PetriNetUnfolder]: 3271/6732 cut-off events. [2023-09-01 12:48:35,852 INFO L131 PetriNetUnfolder]: For 77984/78242 co-relation queries the response was YES. [2023-09-01 12:48:35,899 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. [2023-09-01 12:48:35,916 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 177 selfloop transitions, 39 changer transitions 17/249 dead transitions. [2023-09-01 12:48:35,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 249 transitions, 4121 flow [2023-09-01 12:48:35,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:48:35,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:48:35,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1140 transitions. [2023-09-01 12:48:35,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49673202614379086 [2023-09-01 12:48:35,918 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1140 transitions. [2023-09-01 12:48:35,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1140 transitions. [2023-09-01 12:48:35,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:35,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1140 transitions. [2023-09-01 12:48:35,919 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) [2023-09-01 12:48:35,920 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) [2023-09-01 12:48:35,920 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) [2023-09-01 12:48:35,920 INFO L175 Difference]: Start difference. First operand has 248 places, 203 transitions, 3185 flow. Second operand 9 states and 1140 transitions. [2023-09-01 12:48:35,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 249 transitions, 4121 flow [2023-09-01 12:48:36,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 249 transitions, 3839 flow, removed 26 selfloop flow, removed 22 redundant places. [2023-09-01 12:48:36,286 INFO L231 Difference]: Finished difference. Result has 224 places, 204 transitions, 3042 flow [2023-09-01 12:48:36,286 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} [2023-09-01 12:48:36,287 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 165 predicate places. [2023-09-01 12:48:36,287 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 204 transitions, 3042 flow [2023-09-01 12:48:36,287 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) [2023-09-01 12:48:36,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:36,287 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] [2023-09-01 12:48:36,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-09-01 12:48:36,287 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)] === [2023-09-01 12:48:36,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:36,288 INFO L85 PathProgramCache]: Analyzing trace with hash 758817963, now seen corresponding path program 70 times [2023-09-01 12:48:36,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:36,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572006239] [2023-09-01 12:48:36,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:36,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:36,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:36,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:36,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572006239] [2023-09-01 12:48:36,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572006239] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:36,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:36,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:48:36,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075436326] [2023-09-01 12:48:36,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:36,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:48:36,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:36,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:48:36,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:48:36,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 255 [2023-09-01 12:48:36,661 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) [2023-09-01 12:48:36,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:36,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 255 [2023-09-01 12:48:36,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:37,540 INFO L130 PetriNetUnfolder]: 3222/6516 cut-off events. [2023-09-01 12:48:37,541 INFO L131 PetriNetUnfolder]: For 67778/68052 co-relation queries the response was YES. [2023-09-01 12:48:37,586 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. [2023-09-01 12:48:37,603 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 152 selfloop transitions, 35 changer transitions 15/231 dead transitions. [2023-09-01 12:48:37,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 231 transitions, 3711 flow [2023-09-01 12:48:37,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:48:37,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:48:37,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1027 transitions. [2023-09-01 12:48:37,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034313725490196 [2023-09-01 12:48:37,605 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1027 transitions. [2023-09-01 12:48:37,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1027 transitions. [2023-09-01 12:48:37,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:37,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1027 transitions. [2023-09-01 12:48:37,605 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) [2023-09-01 12:48:37,606 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) [2023-09-01 12:48:37,606 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) [2023-09-01 12:48:37,607 INFO L175 Difference]: Start difference. First operand has 224 places, 204 transitions, 3042 flow. Second operand 8 states and 1027 transitions. [2023-09-01 12:48:37,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 231 transitions, 3711 flow [2023-09-01 12:48:37,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 231 transitions, 3588 flow, removed 18 selfloop flow, removed 7 redundant places. [2023-09-01 12:48:37,803 INFO L231 Difference]: Finished difference. Result has 225 places, 200 transitions, 2932 flow [2023-09-01 12:48:37,803 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} [2023-09-01 12:48:37,803 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 166 predicate places. [2023-09-01 12:48:37,804 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 200 transitions, 2932 flow [2023-09-01 12:48:37,804 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) [2023-09-01 12:48:37,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:37,804 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] [2023-09-01 12:48:37,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-09-01 12:48:37,804 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)] === [2023-09-01 12:48:37,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:37,804 INFO L85 PathProgramCache]: Analyzing trace with hash -533418025, now seen corresponding path program 71 times [2023-09-01 12:48:37,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:37,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909052303] [2023-09-01 12:48:37,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:37,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:38,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:38,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:38,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909052303] [2023-09-01 12:48:38,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909052303] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:38,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:38,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:48:38,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132802765] [2023-09-01 12:48:38,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:38,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:48:38,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:38,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:48:38,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:48:38,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-09-01 12:48:38,268 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) [2023-09-01 12:48:38,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:38,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-09-01 12:48:38,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:39,065 INFO L130 PetriNetUnfolder]: 2624/5543 cut-off events. [2023-09-01 12:48:39,065 INFO L131 PetriNetUnfolder]: For 58313/58627 co-relation queries the response was YES. [2023-09-01 12:48:39,102 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. [2023-09-01 12:48:39,111 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 146 selfloop transitions, 29 changer transitions 53/244 dead transitions. [2023-09-01 12:48:39,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 244 transitions, 3805 flow [2023-09-01 12:48:39,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:48:39,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:48:39,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1144 transitions. [2023-09-01 12:48:39,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984749455337691 [2023-09-01 12:48:39,112 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1144 transitions. [2023-09-01 12:48:39,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1144 transitions. [2023-09-01 12:48:39,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:39,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1144 transitions. [2023-09-01 12:48:39,113 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) [2023-09-01 12:48:39,114 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) [2023-09-01 12:48:39,115 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) [2023-09-01 12:48:39,115 INFO L175 Difference]: Start difference. First operand has 225 places, 200 transitions, 2932 flow. Second operand 9 states and 1144 transitions. [2023-09-01 12:48:39,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 244 transitions, 3805 flow [2023-09-01 12:48:39,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 244 transitions, 3714 flow, removed 11 selfloop flow, removed 7 redundant places. [2023-09-01 12:48:39,308 INFO L231 Difference]: Finished difference. Result has 227 places, 178 transitions, 2461 flow [2023-09-01 12:48:39,308 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} [2023-09-01 12:48:39,308 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 168 predicate places. [2023-09-01 12:48:39,309 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 178 transitions, 2461 flow [2023-09-01 12:48:39,309 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) [2023-09-01 12:48:39,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:39,309 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] [2023-09-01 12:48:39,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-09-01 12:48:39,309 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)] === [2023-09-01 12:48:39,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:39,310 INFO L85 PathProgramCache]: Analyzing trace with hash 823562525, now seen corresponding path program 72 times [2023-09-01 12:48:39,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:39,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963059016] [2023-09-01 12:48:39,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:39,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:39,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:39,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:39,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963059016] [2023-09-01 12:48:39,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963059016] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:39,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:39,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 12:48:39,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9184423] [2023-09-01 12:48:39,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:39,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 12:48:39,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:39,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 12:48:39,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-09-01 12:48:39,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-09-01 12:48:39,664 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) [2023-09-01 12:48:39,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:39,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-09-01 12:48:39,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:40,185 INFO L130 PetriNetUnfolder]: 1508/3549 cut-off events. [2023-09-01 12:48:40,185 INFO L131 PetriNetUnfolder]: For 34291/34507 co-relation queries the response was YES. [2023-09-01 12:48:40,207 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. [2023-09-01 12:48:40,214 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 128 selfloop transitions, 34 changer transitions 13/203 dead transitions. [2023-09-01 12:48:40,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 203 transitions, 3035 flow [2023-09-01 12:48:40,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:48:40,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:48:40,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1139 transitions. [2023-09-01 12:48:40,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962962962962963 [2023-09-01 12:48:40,215 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1139 transitions. [2023-09-01 12:48:40,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1139 transitions. [2023-09-01 12:48:40,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:40,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1139 transitions. [2023-09-01 12:48:40,216 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) [2023-09-01 12:48:40,217 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) [2023-09-01 12:48:40,217 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) [2023-09-01 12:48:40,217 INFO L175 Difference]: Start difference. First operand has 227 places, 178 transitions, 2461 flow. Second operand 9 states and 1139 transitions. [2023-09-01 12:48:40,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 203 transitions, 3035 flow [2023-09-01 12:48:40,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 203 transitions, 2943 flow, removed 17 selfloop flow, removed 10 redundant places. [2023-09-01 12:48:40,310 INFO L231 Difference]: Finished difference. Result has 218 places, 175 transitions, 2416 flow [2023-09-01 12:48:40,311 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} [2023-09-01 12:48:40,311 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 159 predicate places. [2023-09-01 12:48:40,311 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 175 transitions, 2416 flow [2023-09-01 12:48:40,311 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) [2023-09-01 12:48:40,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:40,311 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] [2023-09-01 12:48:40,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-09-01 12:48:40,312 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)] === [2023-09-01 12:48:40,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:40,312 INFO L85 PathProgramCache]: Analyzing trace with hash -747380543, now seen corresponding path program 73 times [2023-09-01 12:48:40,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:40,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998531421] [2023-09-01 12:48:40,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:40,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:40,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:40,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:40,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998531421] [2023-09-01 12:48:40,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998531421] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:40,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:40,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 12:48:40,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697543956] [2023-09-01 12:48:40,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:40,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 12:48:40,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:40,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 12:48:40,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-09-01 12:48:40,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-09-01 12:48:40,658 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) [2023-09-01 12:48:40,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:40,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-09-01 12:48:40,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:41,253 INFO L130 PetriNetUnfolder]: 1534/3435 cut-off events. [2023-09-01 12:48:41,253 INFO L131 PetriNetUnfolder]: For 32259/32399 co-relation queries the response was YES. [2023-09-01 12:48:41,274 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. [2023-09-01 12:48:41,280 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 146 selfloop transitions, 15 changer transitions 26/203 dead transitions. [2023-09-01 12:48:41,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 203 transitions, 2979 flow [2023-09-01 12:48:41,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 12:48:41,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 12:48:41,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1241 transitions. [2023-09-01 12:48:41,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4866666666666667 [2023-09-01 12:48:41,282 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1241 transitions. [2023-09-01 12:48:41,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1241 transitions. [2023-09-01 12:48:41,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:41,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1241 transitions. [2023-09-01 12:48:41,283 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) [2023-09-01 12:48:41,284 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) [2023-09-01 12:48:41,284 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) [2023-09-01 12:48:41,284 INFO L175 Difference]: Start difference. First operand has 218 places, 175 transitions, 2416 flow. Second operand 10 states and 1241 transitions. [2023-09-01 12:48:41,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 203 transitions, 2979 flow [2023-09-01 12:48:41,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 203 transitions, 2840 flow, removed 9 selfloop flow, removed 12 redundant places. [2023-09-01 12:48:41,363 INFO L231 Difference]: Finished difference. Result has 216 places, 164 transitions, 2130 flow [2023-09-01 12:48:41,363 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} [2023-09-01 12:48:41,363 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 157 predicate places. [2023-09-01 12:48:41,363 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 164 transitions, 2130 flow [2023-09-01 12:48:41,363 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) [2023-09-01 12:48:41,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:41,364 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] [2023-09-01 12:48:41,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-09-01 12:48:41,364 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)] === [2023-09-01 12:48:41,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:41,364 INFO L85 PathProgramCache]: Analyzing trace with hash -176209265, now seen corresponding path program 74 times [2023-09-01 12:48:41,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:41,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019932562] [2023-09-01 12:48:41,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:41,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:41,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:41,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:41,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019932562] [2023-09-01 12:48:41,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019932562] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:41,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:41,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:48:41,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508087352] [2023-09-01 12:48:41,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:41,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:48:41,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:41,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:48:41,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:48:41,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-09-01 12:48:41,779 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) [2023-09-01 12:48:41,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:41,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-09-01 12:48:41,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:42,321 INFO L130 PetriNetUnfolder]: 1461/3377 cut-off events. [2023-09-01 12:48:42,321 INFO L131 PetriNetUnfolder]: For 29247/29451 co-relation queries the response was YES. [2023-09-01 12:48:42,343 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. [2023-09-01 12:48:42,349 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 128 selfloop transitions, 27 changer transitions 20/193 dead transitions. [2023-09-01 12:48:42,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 193 transitions, 2798 flow [2023-09-01 12:48:42,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:48:42,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:48:42,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1141 transitions. [2023-09-01 12:48:42,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4971677559912854 [2023-09-01 12:48:42,351 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1141 transitions. [2023-09-01 12:48:42,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1141 transitions. [2023-09-01 12:48:42,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:42,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1141 transitions. [2023-09-01 12:48:42,352 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) [2023-09-01 12:48:42,352 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) [2023-09-01 12:48:42,353 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) [2023-09-01 12:48:42,353 INFO L175 Difference]: Start difference. First operand has 216 places, 164 transitions, 2130 flow. Second operand 9 states and 1141 transitions. [2023-09-01 12:48:42,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 193 transitions, 2798 flow [2023-09-01 12:48:42,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 193 transitions, 2710 flow, removed 22 selfloop flow, removed 13 redundant places. [2023-09-01 12:48:42,429 INFO L231 Difference]: Finished difference. Result has 206 places, 163 transitions, 2154 flow [2023-09-01 12:48:42,429 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} [2023-09-01 12:48:42,429 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 147 predicate places. [2023-09-01 12:48:42,429 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 163 transitions, 2154 flow [2023-09-01 12:48:42,430 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) [2023-09-01 12:48:42,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:42,430 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] [2023-09-01 12:48:42,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-09-01 12:48:42,430 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)] === [2023-09-01 12:48:42,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:42,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1303163771, now seen corresponding path program 75 times [2023-09-01 12:48:42,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:42,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67025127] [2023-09-01 12:48:42,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:42,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:42,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:42,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:42,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67025127] [2023-09-01 12:48:42,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67025127] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:42,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:42,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 12:48:42,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594761087] [2023-09-01 12:48:42,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:42,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:48:42,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:42,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:48:42,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:48:42,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 255 [2023-09-01 12:48:42,761 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) [2023-09-01 12:48:42,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:42,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 255 [2023-09-01 12:48:42,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:43,254 INFO L130 PetriNetUnfolder]: 1396/3239 cut-off events. [2023-09-01 12:48:43,254 INFO L131 PetriNetUnfolder]: For 28699/28801 co-relation queries the response was YES. [2023-09-01 12:48:43,273 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. [2023-09-01 12:48:43,279 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 122 selfloop transitions, 24 changer transitions 15/187 dead transitions. [2023-09-01 12:48:43,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 187 transitions, 2711 flow [2023-09-01 12:48:43,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:48:43,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:48:43,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1022 transitions. [2023-09-01 12:48:43,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5009803921568627 [2023-09-01 12:48:43,280 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1022 transitions. [2023-09-01 12:48:43,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1022 transitions. [2023-09-01 12:48:43,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:43,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1022 transitions. [2023-09-01 12:48:43,281 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) [2023-09-01 12:48:43,282 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) [2023-09-01 12:48:43,282 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) [2023-09-01 12:48:43,282 INFO L175 Difference]: Start difference. First operand has 206 places, 163 transitions, 2154 flow. Second operand 8 states and 1022 transitions. [2023-09-01 12:48:43,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 187 transitions, 2711 flow [2023-09-01 12:48:43,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 187 transitions, 2561 flow, removed 44 selfloop flow, removed 9 redundant places. [2023-09-01 12:48:43,356 INFO L231 Difference]: Finished difference. Result has 204 places, 162 transitions, 2069 flow [2023-09-01 12:48:43,357 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} [2023-09-01 12:48:43,357 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 145 predicate places. [2023-09-01 12:48:43,357 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 162 transitions, 2069 flow [2023-09-01 12:48:43,357 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) [2023-09-01 12:48:43,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:43,357 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] [2023-09-01 12:48:43,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2023-09-01 12:48:43,357 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)] === [2023-09-01 12:48:43,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:43,358 INFO L85 PathProgramCache]: Analyzing trace with hash 591528845, now seen corresponding path program 76 times [2023-09-01 12:48:43,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:43,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77343110] [2023-09-01 12:48:43,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:43,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:43,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:43,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:43,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77343110] [2023-09-01 12:48:43,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77343110] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:43,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:43,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 12:48:43,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547932949] [2023-09-01 12:48:43,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:43,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:48:43,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:43,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:48:43,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:48:43,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-09-01 12:48:43,650 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) [2023-09-01 12:48:43,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:43,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-09-01 12:48:43,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:44,138 INFO L130 PetriNetUnfolder]: 1561/3591 cut-off events. [2023-09-01 12:48:44,138 INFO L131 PetriNetUnfolder]: For 31445/31593 co-relation queries the response was YES. [2023-09-01 12:48:44,160 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. [2023-09-01 12:48:44,166 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 126 selfloop transitions, 29 changer transitions 24/201 dead transitions. [2023-09-01 12:48:44,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 201 transitions, 2840 flow [2023-09-01 12:48:44,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:48:44,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:48:44,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1020 transitions. [2023-09-01 12:48:44,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-09-01 12:48:44,167 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1020 transitions. [2023-09-01 12:48:44,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1020 transitions. [2023-09-01 12:48:44,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:44,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1020 transitions. [2023-09-01 12:48:44,168 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) [2023-09-01 12:48:44,169 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) [2023-09-01 12:48:44,169 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) [2023-09-01 12:48:44,169 INFO L175 Difference]: Start difference. First operand has 204 places, 162 transitions, 2069 flow. Second operand 8 states and 1020 transitions. [2023-09-01 12:48:44,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 201 transitions, 2840 flow [2023-09-01 12:48:44,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 201 transitions, 2757 flow, removed 9 selfloop flow, removed 9 redundant places. [2023-09-01 12:48:44,240 INFO L231 Difference]: Finished difference. Result has 203 places, 158 transitions, 2039 flow [2023-09-01 12:48:44,240 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} [2023-09-01 12:48:44,241 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 144 predicate places. [2023-09-01 12:48:44,241 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 158 transitions, 2039 flow [2023-09-01 12:48:44,241 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) [2023-09-01 12:48:44,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:44,241 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] [2023-09-01 12:48:44,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2023-09-01 12:48:44,241 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)] === [2023-09-01 12:48:44,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:44,241 INFO L85 PathProgramCache]: Analyzing trace with hash -439902165, now seen corresponding path program 77 times [2023-09-01 12:48:44,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:44,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112370482] [2023-09-01 12:48:44,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:44,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:44,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:44,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:44,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112370482] [2023-09-01 12:48:44,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112370482] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:44,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:44,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:48:44,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494004139] [2023-09-01 12:48:44,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:44,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:48:44,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:44,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:48:44,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:48:44,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-09-01 12:48:44,741 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) [2023-09-01 12:48:44,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:44,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-09-01 12:48:44,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:45,227 INFO L130 PetriNetUnfolder]: 1369/3158 cut-off events. [2023-09-01 12:48:45,227 INFO L131 PetriNetUnfolder]: For 29887/30029 co-relation queries the response was YES. [2023-09-01 12:48:45,245 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. [2023-09-01 12:48:45,250 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 114 selfloop transitions, 23 changer transitions 28/190 dead transitions. [2023-09-01 12:48:45,250 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 190 transitions, 2702 flow [2023-09-01 12:48:45,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:48:45,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:48:45,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1023 transitions. [2023-09-01 12:48:45,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014705882352941 [2023-09-01 12:48:45,251 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1023 transitions. [2023-09-01 12:48:45,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1023 transitions. [2023-09-01 12:48:45,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:45,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1023 transitions. [2023-09-01 12:48:45,253 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) [2023-09-01 12:48:45,253 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) [2023-09-01 12:48:45,254 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) [2023-09-01 12:48:45,254 INFO L175 Difference]: Start difference. First operand has 203 places, 158 transitions, 2039 flow. Second operand 8 states and 1023 transitions. [2023-09-01 12:48:45,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 190 transitions, 2702 flow [2023-09-01 12:48:45,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 190 transitions, 2534 flow, removed 30 selfloop flow, removed 10 redundant places. [2023-09-01 12:48:45,316 INFO L231 Difference]: Finished difference. Result has 202 places, 147 transitions, 1795 flow [2023-09-01 12:48:45,317 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} [2023-09-01 12:48:45,317 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 143 predicate places. [2023-09-01 12:48:45,317 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 147 transitions, 1795 flow [2023-09-01 12:48:45,317 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) [2023-09-01 12:48:45,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:45,317 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] [2023-09-01 12:48:45,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2023-09-01 12:48:45,317 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)] === [2023-09-01 12:48:45,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:45,318 INFO L85 PathProgramCache]: Analyzing trace with hash -745775997, now seen corresponding path program 78 times [2023-09-01 12:48:45,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:45,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595866152] [2023-09-01 12:48:45,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:45,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:45,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:45,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:45,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595866152] [2023-09-01 12:48:45,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595866152] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:45,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:45,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 12:48:45,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630392763] [2023-09-01 12:48:45,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:45,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:48:45,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:45,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:48:45,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:48:45,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-09-01 12:48:45,799 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) [2023-09-01 12:48:45,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:45,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-09-01 12:48:45,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:46,245 INFO L130 PetriNetUnfolder]: 1281/3006 cut-off events. [2023-09-01 12:48:46,246 INFO L131 PetriNetUnfolder]: For 26561/26683 co-relation queries the response was YES. [2023-09-01 12:48:46,263 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. [2023-09-01 12:48:46,268 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 110 selfloop transitions, 19 changer transitions 17/170 dead transitions. [2023-09-01 12:48:46,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 170 transitions, 2264 flow [2023-09-01 12:48:46,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:48:46,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:48:46,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1017 transitions. [2023-09-01 12:48:46,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4985294117647059 [2023-09-01 12:48:46,269 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1017 transitions. [2023-09-01 12:48:46,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1017 transitions. [2023-09-01 12:48:46,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:46,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1017 transitions. [2023-09-01 12:48:46,270 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) [2023-09-01 12:48:46,271 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) [2023-09-01 12:48:46,271 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) [2023-09-01 12:48:46,271 INFO L175 Difference]: Start difference. First operand has 202 places, 147 transitions, 1795 flow. Second operand 8 states and 1017 transitions. [2023-09-01 12:48:46,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 170 transitions, 2264 flow [2023-09-01 12:48:46,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 170 transitions, 2158 flow, removed 27 selfloop flow, removed 14 redundant places. [2023-09-01 12:48:46,331 INFO L231 Difference]: Finished difference. Result has 195 places, 145 transitions, 1724 flow [2023-09-01 12:48:46,331 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} [2023-09-01 12:48:46,331 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 136 predicate places. [2023-09-01 12:48:46,331 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 145 transitions, 1724 flow [2023-09-01 12:48:46,331 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) [2023-09-01 12:48:46,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:46,331 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] [2023-09-01 12:48:46,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2023-09-01 12:48:46,332 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)] === [2023-09-01 12:48:46,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:46,332 INFO L85 PathProgramCache]: Analyzing trace with hash -845010047, now seen corresponding path program 79 times [2023-09-01 12:48:46,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:46,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320204727] [2023-09-01 12:48:46,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:46,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:46,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:46,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:46,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320204727] [2023-09-01 12:48:46,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320204727] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:46,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:46,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 12:48:46,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018050414] [2023-09-01 12:48:46,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:46,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 12:48:46,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:46,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 12:48:46,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-09-01 12:48:46,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-09-01 12:48:46,656 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) [2023-09-01 12:48:46,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:46,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-09-01 12:48:46,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:47,063 INFO L130 PetriNetUnfolder]: 1273/2876 cut-off events. [2023-09-01 12:48:47,063 INFO L131 PetriNetUnfolder]: For 22776/22924 co-relation queries the response was YES. [2023-09-01 12:48:47,082 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. [2023-09-01 12:48:47,087 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 112 selfloop transitions, 24 changer transitions 17/177 dead transitions. [2023-09-01 12:48:47,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 177 transitions, 2295 flow [2023-09-01 12:48:47,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:48:47,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:48:47,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1024 transitions. [2023-09-01 12:48:47,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019607843137255 [2023-09-01 12:48:47,088 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1024 transitions. [2023-09-01 12:48:47,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1024 transitions. [2023-09-01 12:48:47,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:47,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1024 transitions. [2023-09-01 12:48:47,089 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) [2023-09-01 12:48:47,090 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) [2023-09-01 12:48:47,090 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) [2023-09-01 12:48:47,090 INFO L175 Difference]: Start difference. First operand has 195 places, 145 transitions, 1724 flow. Second operand 8 states and 1024 transitions. [2023-09-01 12:48:47,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 177 transitions, 2295 flow [2023-09-01 12:48:47,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 177 transitions, 2243 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-09-01 12:48:47,140 INFO L231 Difference]: Finished difference. Result has 196 places, 145 transitions, 1795 flow [2023-09-01 12:48:47,140 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} [2023-09-01 12:48:47,141 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 137 predicate places. [2023-09-01 12:48:47,141 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 145 transitions, 1795 flow [2023-09-01 12:48:47,141 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) [2023-09-01 12:48:47,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:47,141 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] [2023-09-01 12:48:47,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2023-09-01 12:48:47,142 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)] === [2023-09-01 12:48:47,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:47,142 INFO L85 PathProgramCache]: Analyzing trace with hash 583139423, now seen corresponding path program 80 times [2023-09-01 12:48:47,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:47,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058356611] [2023-09-01 12:48:47,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:47,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:47,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:47,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:47,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058356611] [2023-09-01 12:48:47,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058356611] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:47,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:47,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:48:47,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134878643] [2023-09-01 12:48:47,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:47,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:48:47,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:47,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:48:47,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:48:47,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-09-01 12:48:47,537 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) [2023-09-01 12:48:47,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:47,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-09-01 12:48:47,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:47,951 INFO L130 PetriNetUnfolder]: 1213/2831 cut-off events. [2023-09-01 12:48:47,951 INFO L131 PetriNetUnfolder]: For 22867/22963 co-relation queries the response was YES. [2023-09-01 12:48:47,966 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. [2023-09-01 12:48:47,971 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 110 selfloop transitions, 18 changer transitions 14/160 dead transitions. [2023-09-01 12:48:47,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 160 transitions, 2155 flow [2023-09-01 12:48:47,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:48:47,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:48:47,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1013 transitions. [2023-09-01 12:48:47,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965686274509804 [2023-09-01 12:48:47,972 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1013 transitions. [2023-09-01 12:48:47,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1013 transitions. [2023-09-01 12:48:47,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:47,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1013 transitions. [2023-09-01 12:48:47,973 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) [2023-09-01 12:48:47,974 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) [2023-09-01 12:48:47,974 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) [2023-09-01 12:48:47,974 INFO L175 Difference]: Start difference. First operand has 196 places, 145 transitions, 1795 flow. Second operand 8 states and 1013 transitions. [2023-09-01 12:48:47,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 160 transitions, 2155 flow [2023-09-01 12:48:48,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 160 transitions, 2068 flow, removed 29 selfloop flow, removed 6 redundant places. [2023-09-01 12:48:48,023 INFO L231 Difference]: Finished difference. Result has 194 places, 139 transitions, 1674 flow [2023-09-01 12:48:48,024 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} [2023-09-01 12:48:48,024 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 135 predicate places. [2023-09-01 12:48:48,024 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 139 transitions, 1674 flow [2023-09-01 12:48:48,024 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) [2023-09-01 12:48:48,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:48,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:48:48,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2023-09-01 12:48:48,024 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)] === [2023-09-01 12:48:48,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:48,025 INFO L85 PathProgramCache]: Analyzing trace with hash -557162527, now seen corresponding path program 81 times [2023-09-01 12:48:48,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:48,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578396905] [2023-09-01 12:48:48,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:48,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:48,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:48,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:48,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578396905] [2023-09-01 12:48:48,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578396905] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:48,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:48,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 12:48:48,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731264632] [2023-09-01 12:48:48,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:48,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 12:48:48,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:48,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 12:48:48,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-09-01 12:48:48,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 255 [2023-09-01 12:48:48,498 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) [2023-09-01 12:48:48,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:48,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 255 [2023-09-01 12:48:48,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:48,886 INFO L130 PetriNetUnfolder]: 1176/2657 cut-off events. [2023-09-01 12:48:48,886 INFO L131 PetriNetUnfolder]: For 21450/21562 co-relation queries the response was YES. [2023-09-01 12:48:48,900 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. [2023-09-01 12:48:48,904 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 106 selfloop transitions, 23 changer transitions 18/171 dead transitions. [2023-09-01 12:48:48,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 171 transitions, 2195 flow [2023-09-01 12:48:48,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:48:48,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:48:48,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1143 transitions. [2023-09-01 12:48:48,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980392156862745 [2023-09-01 12:48:48,906 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1143 transitions. [2023-09-01 12:48:48,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1143 transitions. [2023-09-01 12:48:48,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:48,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1143 transitions. [2023-09-01 12:48:48,907 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) [2023-09-01 12:48:48,908 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) [2023-09-01 12:48:48,908 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) [2023-09-01 12:48:48,908 INFO L175 Difference]: Start difference. First operand has 194 places, 139 transitions, 1674 flow. Second operand 9 states and 1143 transitions. [2023-09-01 12:48:48,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 171 transitions, 2195 flow [2023-09-01 12:48:48,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 171 transitions, 2138 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-09-01 12:48:48,951 INFO L231 Difference]: Finished difference. Result has 194 places, 137 transitions, 1658 flow [2023-09-01 12:48:48,952 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} [2023-09-01 12:48:48,952 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 135 predicate places. [2023-09-01 12:48:48,952 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 137 transitions, 1658 flow [2023-09-01 12:48:48,952 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) [2023-09-01 12:48:48,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:48,952 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] [2023-09-01 12:48:48,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2023-09-01 12:48:48,953 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)] === [2023-09-01 12:48:48,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:48,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1935231223, now seen corresponding path program 82 times [2023-09-01 12:48:48,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:48,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222757258] [2023-09-01 12:48:48,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:48,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:49,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:49,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:49,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222757258] [2023-09-01 12:48:49,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222757258] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:49,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:49,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:48:49,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156430568] [2023-09-01 12:48:49,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:49,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:48:49,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:49,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:48:49,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:48:49,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-09-01 12:48:49,262 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) [2023-09-01 12:48:49,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:49,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-09-01 12:48:49,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:49,694 INFO L130 PetriNetUnfolder]: 1173/2741 cut-off events. [2023-09-01 12:48:49,694 INFO L131 PetriNetUnfolder]: For 21706/21786 co-relation queries the response was YES. [2023-09-01 12:48:49,709 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. [2023-09-01 12:48:49,715 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 106 selfloop transitions, 22 changer transitions 17/168 dead transitions. [2023-09-01 12:48:49,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 168 transitions, 2191 flow [2023-09-01 12:48:49,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:48:49,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:48:49,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1017 transitions. [2023-09-01 12:48:49,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4985294117647059 [2023-09-01 12:48:49,716 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1017 transitions. [2023-09-01 12:48:49,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1017 transitions. [2023-09-01 12:48:49,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:49,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1017 transitions. [2023-09-01 12:48:49,718 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) [2023-09-01 12:48:49,718 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) [2023-09-01 12:48:49,719 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) [2023-09-01 12:48:49,719 INFO L175 Difference]: Start difference. First operand has 194 places, 137 transitions, 1658 flow. Second operand 8 states and 1017 transitions. [2023-09-01 12:48:49,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 168 transitions, 2191 flow [2023-09-01 12:48:49,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 168 transitions, 2123 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-09-01 12:48:49,768 INFO L231 Difference]: Finished difference. Result has 193 places, 136 transitions, 1651 flow [2023-09-01 12:48:49,768 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} [2023-09-01 12:48:49,768 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 134 predicate places. [2023-09-01 12:48:49,768 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 136 transitions, 1651 flow [2023-09-01 12:48:49,769 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) [2023-09-01 12:48:49,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:49,769 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] [2023-09-01 12:48:49,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2023-09-01 12:48:49,769 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)] === [2023-09-01 12:48:49,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:49,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1293912979, now seen corresponding path program 83 times [2023-09-01 12:48:49,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:49,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810434197] [2023-09-01 12:48:49,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:49,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:49,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:49,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:49,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810434197] [2023-09-01 12:48:49,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810434197] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:49,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:49,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 12:48:49,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485577129] [2023-09-01 12:48:49,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:49,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 12:48:49,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:49,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 12:48:49,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 12:48:50,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-09-01 12:48:50,008 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) [2023-09-01 12:48:50,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:50,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-09-01 12:48:50,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:50,332 INFO L130 PetriNetUnfolder]: 1084/2552 cut-off events. [2023-09-01 12:48:50,332 INFO L131 PetriNetUnfolder]: For 19882/19958 co-relation queries the response was YES. [2023-09-01 12:48:50,345 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. [2023-09-01 12:48:50,350 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 100 selfloop transitions, 9 changer transitions 24/155 dead transitions. [2023-09-01 12:48:50,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 155 transitions, 2045 flow [2023-09-01 12:48:50,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 12:48:50,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 12:48:50,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 770 transitions. [2023-09-01 12:48:50,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032679738562091 [2023-09-01 12:48:50,351 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 770 transitions. [2023-09-01 12:48:50,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 770 transitions. [2023-09-01 12:48:50,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:50,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 770 transitions. [2023-09-01 12:48:50,351 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) [2023-09-01 12:48:50,352 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) [2023-09-01 12:48:50,352 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) [2023-09-01 12:48:50,352 INFO L175 Difference]: Start difference. First operand has 193 places, 136 transitions, 1651 flow. Second operand 6 states and 770 transitions. [2023-09-01 12:48:50,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 155 transitions, 2045 flow [2023-09-01 12:48:50,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 155 transitions, 1981 flow, removed 17 selfloop flow, removed 5 redundant places. [2023-09-01 12:48:50,398 INFO L231 Difference]: Finished difference. Result has 194 places, 118 transitions, 1340 flow [2023-09-01 12:48:50,398 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} [2023-09-01 12:48:50,398 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 135 predicate places. [2023-09-01 12:48:50,398 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 118 transitions, 1340 flow [2023-09-01 12:48:50,398 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) [2023-09-01 12:48:50,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:50,398 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] [2023-09-01 12:48:50,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2023-09-01 12:48:50,399 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)] === [2023-09-01 12:48:50,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:50,399 INFO L85 PathProgramCache]: Analyzing trace with hash 496234135, now seen corresponding path program 84 times [2023-09-01 12:48:50,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:50,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401516326] [2023-09-01 12:48:50,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:50,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:50,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:50,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:50,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401516326] [2023-09-01 12:48:50,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401516326] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:50,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:50,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:48:50,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851358465] [2023-09-01 12:48:50,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:50,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:48:50,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:50,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:48:50,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:48:50,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-09-01 12:48:50,731 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) [2023-09-01 12:48:50,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:50,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-09-01 12:48:50,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:48:51,054 INFO L130 PetriNetUnfolder]: 931/2237 cut-off events. [2023-09-01 12:48:51,054 INFO L131 PetriNetUnfolder]: For 16688/16746 co-relation queries the response was YES. [2023-09-01 12:48:51,066 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. [2023-09-01 12:48:51,070 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 86 selfloop transitions, 8 changer transitions 22/132 dead transitions. [2023-09-01 12:48:51,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 132 transitions, 1614 flow [2023-09-01 12:48:51,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:48:51,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:48:51,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1113 transitions. [2023-09-01 12:48:51,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849673202614379 [2023-09-01 12:48:51,072 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1113 transitions. [2023-09-01 12:48:51,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1113 transitions. [2023-09-01 12:48:51,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:48:51,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1113 transitions. [2023-09-01 12:48:51,073 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) [2023-09-01 12:48:51,074 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) [2023-09-01 12:48:51,074 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) [2023-09-01 12:48:51,074 INFO L175 Difference]: Start difference. First operand has 194 places, 118 transitions, 1340 flow. Second operand 9 states and 1113 transitions. [2023-09-01 12:48:51,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 132 transitions, 1614 flow [2023-09-01 12:48:51,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 132 transitions, 1446 flow, removed 27 selfloop flow, removed 20 redundant places. [2023-09-01 12:48:51,109 INFO L231 Difference]: Finished difference. Result has 184 places, 105 transitions, 1034 flow [2023-09-01 12:48:51,110 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} [2023-09-01 12:48:51,110 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 125 predicate places. [2023-09-01 12:48:51,110 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 105 transitions, 1034 flow [2023-09-01 12:48:51,110 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) [2023-09-01 12:48:51,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:48:51,110 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] [2023-09-01 12:48:51,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2023-09-01 12:48:51,111 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)] === [2023-09-01 12:48:51,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:48:51,111 INFO L85 PathProgramCache]: Analyzing trace with hash 5158091, now seen corresponding path program 85 times [2023-09-01 12:48:51,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:48:51,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680459431] [2023-09-01 12:48:51,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:48:51,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:48:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:48:51,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:48:51,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:48:51,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680459431] [2023-09-01 12:48:51,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680459431] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:48:51,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:48:51,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:48:51,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51294073] [2023-09-01 12:48:51,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:48:51,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:48:51,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:48:51,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:48:51,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:48:51,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-09-01 12:48:51,460 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) [2023-09-01 12:48:51,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:48:51,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-09-01 12:48:51,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand