./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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 ../sv-benchmarks/c/weaver/chl-file-item-trans.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 7850c8f92b7e0b0b866687e8f3ea719169cacbc5985a977f15b280bf9bb53b5b --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:58:34,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:58:34,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:58:34,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:58:34,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:58:34,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:58:34,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:58:34,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:58:34,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:58:34,412 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:58:34,413 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:58:34,414 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:58:34,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:58:34,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:58:34,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:58:34,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:58:34,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:58:34,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:58:34,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:58:34,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:58:34,426 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:58:34,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:58:34,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:58:34,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:58:34,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:58:34,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:58:34,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:58:34,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:58:34,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:58:34,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:58:34,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:58:34,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:58:34,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:58:34,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:58:34,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:58:34,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:58:34,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:58:34,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:58:34,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:58:34,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:58:34,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:58:34,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:58:34,437 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:58:34,461 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:58:34,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:58:34,462 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:58:34,462 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:58:34,463 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:58:34,463 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:58:34,464 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:58:34,464 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:58:34,464 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:58:34,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:58:34,465 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:58:34,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:58:34,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:58:34,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:58:34,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:58:34,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:58:34,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:58:34,466 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:58:34,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:58:34,466 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:58:34,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:58:34,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:58:34,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:58:34,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:58:34,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:58:34,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:58:34,467 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:58:34,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:58:34,467 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:58:34,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:58:34,468 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:58:34,468 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:58:34,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:58:34,468 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7850c8f92b7e0b0b866687e8f3ea719169cacbc5985a977f15b280bf9bb53b5b [2022-07-21 08:58:34,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:58:34,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:58:34,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:58:34,708 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:58:34,708 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:58:34,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c [2022-07-21 08:58:34,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/669cee9ba/6ef9bc002e624c6bbdf746f5b185e9e6/FLAG9cc37d75a [2022-07-21 08:58:35,111 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:58:35,112 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c [2022-07-21 08:58:35,116 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/669cee9ba/6ef9bc002e624c6bbdf746f5b185e9e6/FLAG9cc37d75a [2022-07-21 08:58:35,130 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/669cee9ba/6ef9bc002e624c6bbdf746f5b185e9e6 [2022-07-21 08:58:35,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:58:35,137 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:58:35,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:58:35,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:58:35,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:58:35,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:58:35" (1/1) ... [2022-07-21 08:58:35,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47f1af35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:35, skipping insertion in model container [2022-07-21 08:58:35,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:58:35" (1/1) ... [2022-07-21 08:58:35,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:58:35,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:58:35,322 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c[2817,2830] [2022-07-21 08:58:35,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:58:35,373 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:58:35,399 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c[2817,2830] [2022-07-21 08:58:35,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:58:35,416 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:58:35,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:35 WrapperNode [2022-07-21 08:58:35,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:58:35,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:58:35,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:58:35,419 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:58:35,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:35" (1/1) ... [2022-07-21 08:58:35,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:35" (1/1) ... [2022-07-21 08:58:35,467 INFO L137 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 217 [2022-07-21 08:58:35,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:58:35,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:58:35,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:58:35,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:58:35,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:35" (1/1) ... [2022-07-21 08:58:35,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:35" (1/1) ... [2022-07-21 08:58:35,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:35" (1/1) ... [2022-07-21 08:58:35,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:35" (1/1) ... [2022-07-21 08:58:35,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:35" (1/1) ... [2022-07-21 08:58:35,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:35" (1/1) ... [2022-07-21 08:58:35,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:35" (1/1) ... [2022-07-21 08:58:35,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:58:35,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:58:35,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:58:35,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:58:35,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:35" (1/1) ... [2022-07-21 08:58:35,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:58:35,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:58:35,548 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) [2022-07-21 08:58:35,568 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 [2022-07-21 08:58:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:58:35,582 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-21 08:58:35,582 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-21 08:58:35,582 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-21 08:58:35,582 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-21 08:58:35,582 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-21 08:58:35,582 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-21 08:58:35,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:58:35,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:58:35,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:58:35,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:58:35,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:58:35,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:58:35,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:58:35,584 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:58:35,644 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:58:35,645 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:58:35,932 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:58:35,940 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:58:35,940 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 08:58:35,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:58:35 BoogieIcfgContainer [2022-07-21 08:58:35,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:58:35,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:58:35,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:58:35,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:58:35,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:58:35" (1/3) ... [2022-07-21 08:58:35,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dfcd747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:58:35, skipping insertion in model container [2022-07-21 08:58:35,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:35" (2/3) ... [2022-07-21 08:58:35,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dfcd747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:58:35, skipping insertion in model container [2022-07-21 08:58:35,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:58:35" (3/3) ... [2022-07-21 08:58:35,947 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-file-item-trans.wvr.c [2022-07-21 08:58:35,950 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:58:35,956 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:58:35,956 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 08:58:35,956 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:58:36,046 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-21 08:58:36,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 263 places, 278 transitions, 580 flow [2022-07-21 08:58:36,194 INFO L129 PetriNetUnfolder]: 25/275 cut-off events. [2022-07-21 08:58:36,194 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-21 08:58:36,207 INFO L84 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 275 events. 25/275 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 737 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 199. Up to 2 conditions per place. [2022-07-21 08:58:36,208 INFO L82 GeneralOperation]: Start removeDead. Operand has 263 places, 278 transitions, 580 flow [2022-07-21 08:58:36,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 264 transitions, 546 flow [2022-07-21 08:58:36,231 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:58:36,236 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7f53f219, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7c952c3a [2022-07-21 08:58:36,236 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-21 08:58:36,284 INFO L129 PetriNetUnfolder]: 25/263 cut-off events. [2022-07-21 08:58:36,285 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-21 08:58:36,285 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:36,286 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:36,286 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)] === [2022-07-21 08:58:36,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:36,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1520883517, now seen corresponding path program 1 times [2022-07-21 08:58:36,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:36,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112085964] [2022-07-21 08:58:36,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:36,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:36,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:36,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:36,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112085964] [2022-07-21 08:58:36,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112085964] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:36,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:36,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:58:36,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694570196] [2022-07-21 08:58:36,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:36,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:58:36,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:36,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:58:36,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:58:36,585 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 278 [2022-07-21 08:58:36,589 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 264 transitions, 546 flow. Second operand has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:36,589 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:36,589 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 278 [2022-07-21 08:58:36,590 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:36,699 INFO L129 PetriNetUnfolder]: 59/695 cut-off events. [2022-07-21 08:58:36,700 INFO L130 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-07-21 08:58:36,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 695 events. 59/695 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3821 event pairs, 5 based on Foata normal form. 39/656 useless extension candidates. Maximal degree in co-relation 519. Up to 23 conditions per place. [2022-07-21 08:58:36,709 INFO L132 encePairwiseOnDemand]: 267/278 looper letters, 17 selfloop transitions, 2 changer transitions 1/264 dead transitions. [2022-07-21 08:58:36,709 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 264 transitions, 599 flow [2022-07-21 08:58:36,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:58:36,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:58:36,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 809 transitions. [2022-07-21 08:58:36,725 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9700239808153477 [2022-07-21 08:58:36,726 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 809 transitions. [2022-07-21 08:58:36,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 809 transitions. [2022-07-21 08:58:36,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:36,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 809 transitions. [2022-07-21 08:58:36,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 269.6666666666667) internal successors, (809), 3 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:36,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:36,743 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:36,744 INFO L186 Difference]: Start difference. First operand has 249 places, 264 transitions, 546 flow. Second operand 3 states and 809 transitions. [2022-07-21 08:58:36,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 264 transitions, 599 flow [2022-07-21 08:58:36,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 264 transitions, 577 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-21 08:58:36,756 INFO L242 Difference]: Finished difference. Result has 247 places, 258 transitions, 538 flow [2022-07-21 08:58:36,758 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=538, PETRI_PLACES=247, PETRI_TRANSITIONS=258} [2022-07-21 08:58:36,761 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, -2 predicate places. [2022-07-21 08:58:36,761 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 258 transitions, 538 flow [2022-07-21 08:58:36,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:36,762 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:36,762 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:36,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:58:36,762 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)] === [2022-07-21 08:58:36,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:36,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1354549505, now seen corresponding path program 1 times [2022-07-21 08:58:36,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:36,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814080084] [2022-07-21 08:58:36,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:36,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:36,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:36,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:36,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814080084] [2022-07-21 08:58:36,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814080084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:36,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:36,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:58:36,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228674801] [2022-07-21 08:58:36,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:36,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:58:36,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:36,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:58:36,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:58:36,890 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 278 [2022-07-21 08:58:36,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 258 transitions, 538 flow. Second operand has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:36,891 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:36,891 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 278 [2022-07-21 08:58:36,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:36,977 INFO L129 PetriNetUnfolder]: 49/605 cut-off events. [2022-07-21 08:58:36,977 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-07-21 08:58:36,979 INFO L84 FinitePrefix]: Finished finitePrefix Result has 671 conditions, 605 events. 49/605 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2949 event pairs, 6 based on Foata normal form. 4/550 useless extension candidates. Maximal degree in co-relation 506. Up to 20 conditions per place. [2022-07-21 08:58:36,981 INFO L132 encePairwiseOnDemand]: 272/278 looper letters, 17 selfloop transitions, 4 changer transitions 0/265 dead transitions. [2022-07-21 08:58:36,981 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 265 transitions, 603 flow [2022-07-21 08:58:36,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:58:36,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:58:36,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 795 transitions. [2022-07-21 08:58:36,984 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9532374100719424 [2022-07-21 08:58:36,984 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 795 transitions. [2022-07-21 08:58:36,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 795 transitions. [2022-07-21 08:58:36,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:36,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 795 transitions. [2022-07-21 08:58:36,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:36,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:36,988 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:36,988 INFO L186 Difference]: Start difference. First operand has 247 places, 258 transitions, 538 flow. Second operand 3 states and 795 transitions. [2022-07-21 08:58:36,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 265 transitions, 603 flow [2022-07-21 08:58:36,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 265 transitions, 601 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:58:36,995 INFO L242 Difference]: Finished difference. Result has 249 places, 260 transitions, 568 flow [2022-07-21 08:58:36,995 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=568, PETRI_PLACES=249, PETRI_TRANSITIONS=260} [2022-07-21 08:58:36,996 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 0 predicate places. [2022-07-21 08:58:36,996 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 260 transitions, 568 flow [2022-07-21 08:58:36,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:36,997 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:36,997 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:36,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:58:36,997 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)] === [2022-07-21 08:58:36,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:36,998 INFO L85 PathProgramCache]: Analyzing trace with hash 98904019, now seen corresponding path program 1 times [2022-07-21 08:58:36,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:36,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790172625] [2022-07-21 08:58:36,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:36,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:37,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:37,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:37,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790172625] [2022-07-21 08:58:37,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790172625] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:37,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:37,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:58:37,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600729785] [2022-07-21 08:58:37,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:37,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:58:37,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:37,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:58:37,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:58:37,086 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 278 [2022-07-21 08:58:37,086 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 260 transitions, 568 flow. Second operand has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:37,086 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:37,087 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 278 [2022-07-21 08:58:37,087 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:37,222 INFO L129 PetriNetUnfolder]: 119/1449 cut-off events. [2022-07-21 08:58:37,222 INFO L130 PetriNetUnfolder]: For 33/39 co-relation queries the response was YES. [2022-07-21 08:58:37,230 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1588 conditions, 1449 events. 119/1449 cut-off events. For 33/39 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 11862 event pairs, 13 based on Foata normal form. 0/1292 useless extension candidates. Maximal degree in co-relation 909. Up to 54 conditions per place. [2022-07-21 08:58:37,235 INFO L132 encePairwiseOnDemand]: 270/278 looper letters, 17 selfloop transitions, 5 changer transitions 0/268 dead transitions. [2022-07-21 08:58:37,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 268 transitions, 633 flow [2022-07-21 08:58:37,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:58:37,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:58:37,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 793 transitions. [2022-07-21 08:58:37,238 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9508393285371702 [2022-07-21 08:58:37,238 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 793 transitions. [2022-07-21 08:58:37,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 793 transitions. [2022-07-21 08:58:37,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:37,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 793 transitions. [2022-07-21 08:58:37,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:37,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:37,242 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:37,242 INFO L186 Difference]: Start difference. First operand has 249 places, 260 transitions, 568 flow. Second operand 3 states and 793 transitions. [2022-07-21 08:58:37,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 268 transitions, 633 flow [2022-07-21 08:58:37,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 268 transitions, 621 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-21 08:58:37,247 INFO L242 Difference]: Finished difference. Result has 251 places, 263 transitions, 594 flow [2022-07-21 08:58:37,247 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=594, PETRI_PLACES=251, PETRI_TRANSITIONS=263} [2022-07-21 08:58:37,249 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 2 predicate places. [2022-07-21 08:58:37,249 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 263 transitions, 594 flow [2022-07-21 08:58:37,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:37,250 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:37,250 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:37,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:58:37,250 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)] === [2022-07-21 08:58:37,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:37,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1842374523, now seen corresponding path program 2 times [2022-07-21 08:58:37,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:37,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816543858] [2022-07-21 08:58:37,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:37,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:37,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:37,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:37,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816543858] [2022-07-21 08:58:37,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816543858] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:37,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:37,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:58:37,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360063405] [2022-07-21 08:58:37,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:37,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:58:37,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:37,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:58:37,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:58:37,336 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 278 [2022-07-21 08:58:37,337 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 263 transitions, 594 flow. Second operand has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:37,337 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:37,337 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 278 [2022-07-21 08:58:37,337 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:37,475 INFO L129 PetriNetUnfolder]: 103/1263 cut-off events. [2022-07-21 08:58:37,476 INFO L130 PetriNetUnfolder]: For 84/90 co-relation queries the response was YES. [2022-07-21 08:58:37,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1432 conditions, 1263 events. 103/1263 cut-off events. For 84/90 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 9658 event pairs, 13 based on Foata normal form. 10/1151 useless extension candidates. Maximal degree in co-relation 789. Up to 39 conditions per place. [2022-07-21 08:58:37,485 INFO L132 encePairwiseOnDemand]: 272/278 looper letters, 22 selfloop transitions, 3 changer transitions 0/271 dead transitions. [2022-07-21 08:58:37,485 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 271 transitions, 671 flow [2022-07-21 08:58:37,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:58:37,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:58:37,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 793 transitions. [2022-07-21 08:58:37,487 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9508393285371702 [2022-07-21 08:58:37,487 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 793 transitions. [2022-07-21 08:58:37,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 793 transitions. [2022-07-21 08:58:37,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:37,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 793 transitions. [2022-07-21 08:58:37,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:37,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:37,493 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:37,494 INFO L186 Difference]: Start difference. First operand has 251 places, 263 transitions, 594 flow. Second operand 3 states and 793 transitions. [2022-07-21 08:58:37,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 271 transitions, 671 flow [2022-07-21 08:58:37,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 271 transitions, 661 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:58:37,499 INFO L242 Difference]: Finished difference. Result has 253 places, 266 transitions, 620 flow [2022-07-21 08:58:37,499 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=620, PETRI_PLACES=253, PETRI_TRANSITIONS=266} [2022-07-21 08:58:37,500 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 4 predicate places. [2022-07-21 08:58:37,501 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 266 transitions, 620 flow [2022-07-21 08:58:37,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:37,502 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:37,502 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:37,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:58:37,503 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)] === [2022-07-21 08:58:37,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:37,503 INFO L85 PathProgramCache]: Analyzing trace with hash 386728125, now seen corresponding path program 1 times [2022-07-21 08:58:37,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:37,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649535230] [2022-07-21 08:58:37,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:37,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:37,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:37,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:37,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649535230] [2022-07-21 08:58:37,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649535230] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:37,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:37,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:58:37,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175126287] [2022-07-21 08:58:37,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:37,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:58:37,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:37,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:58:37,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:58:37,611 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 278 [2022-07-21 08:58:37,613 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 266 transitions, 620 flow. Second operand has 7 states, 7 states have (on average 253.28571428571428) internal successors, (1773), 7 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:37,613 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:37,613 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 278 [2022-07-21 08:58:37,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:37,800 INFO L129 PetriNetUnfolder]: 118/1068 cut-off events. [2022-07-21 08:58:37,800 INFO L130 PetriNetUnfolder]: For 61/92 co-relation queries the response was YES. [2022-07-21 08:58:37,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1400 conditions, 1068 events. 118/1068 cut-off events. For 61/92 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 8650 event pairs, 20 based on Foata normal form. 3/984 useless extension candidates. Maximal degree in co-relation 764. Up to 103 conditions per place. [2022-07-21 08:58:37,811 INFO L132 encePairwiseOnDemand]: 269/278 looper letters, 20 selfloop transitions, 6 changer transitions 7/281 dead transitions. [2022-07-21 08:58:37,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 281 transitions, 724 flow [2022-07-21 08:58:37,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:58:37,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 08:58:37,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1791 transitions. [2022-07-21 08:58:37,814 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.920349434737924 [2022-07-21 08:58:37,814 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1791 transitions. [2022-07-21 08:58:37,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1791 transitions. [2022-07-21 08:58:37,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:37,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1791 transitions. [2022-07-21 08:58:37,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 255.85714285714286) internal successors, (1791), 7 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:37,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 278.0) internal successors, (2224), 8 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:37,842 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 278.0) internal successors, (2224), 8 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:37,842 INFO L186 Difference]: Start difference. First operand has 253 places, 266 transitions, 620 flow. Second operand 7 states and 1791 transitions. [2022-07-21 08:58:37,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 281 transitions, 724 flow [2022-07-21 08:58:37,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 281 transitions, 715 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-07-21 08:58:37,846 INFO L242 Difference]: Finished difference. Result has 263 places, 270 transitions, 655 flow [2022-07-21 08:58:37,846 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=655, PETRI_PLACES=263, PETRI_TRANSITIONS=270} [2022-07-21 08:58:37,847 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 14 predicate places. [2022-07-21 08:58:37,847 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 270 transitions, 655 flow [2022-07-21 08:58:37,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 253.28571428571428) internal successors, (1773), 7 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:37,848 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:37,848 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:37,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:58:37,848 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)] === [2022-07-21 08:58:37,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:37,849 INFO L85 PathProgramCache]: Analyzing trace with hash -932884603, now seen corresponding path program 1 times [2022-07-21 08:58:37,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:37,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234287972] [2022-07-21 08:58:37,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:37,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:37,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:37,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:37,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234287972] [2022-07-21 08:58:37,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234287972] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:37,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:37,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:58:37,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447638077] [2022-07-21 08:58:37,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:37,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:58:37,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:37,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:58:37,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:58:37,886 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 278 [2022-07-21 08:58:37,886 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 270 transitions, 655 flow. Second operand has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:37,886 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:37,886 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 278 [2022-07-21 08:58:37,886 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:38,145 INFO L129 PetriNetUnfolder]: 185/2665 cut-off events. [2022-07-21 08:58:38,146 INFO L130 PetriNetUnfolder]: For 110/157 co-relation queries the response was YES. [2022-07-21 08:58:38,156 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3284 conditions, 2665 events. 185/2665 cut-off events. For 110/157 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 27676 event pairs, 44 based on Foata normal form. 0/2410 useless extension candidates. Maximal degree in co-relation 3248. Up to 149 conditions per place. [2022-07-21 08:58:38,162 INFO L132 encePairwiseOnDemand]: 268/278 looper letters, 18 selfloop transitions, 6 changer transitions 0/278 dead transitions. [2022-07-21 08:58:38,162 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 278 transitions, 723 flow [2022-07-21 08:58:38,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:58:38,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:58:38,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 790 transitions. [2022-07-21 08:58:38,164 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.947242206235012 [2022-07-21 08:58:38,164 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 790 transitions. [2022-07-21 08:58:38,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 790 transitions. [2022-07-21 08:58:38,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:38,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 790 transitions. [2022-07-21 08:58:38,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:38,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:38,167 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:38,167 INFO L186 Difference]: Start difference. First operand has 263 places, 270 transitions, 655 flow. Second operand 3 states and 790 transitions. [2022-07-21 08:58:38,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 278 transitions, 723 flow [2022-07-21 08:58:38,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 278 transitions, 717 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-07-21 08:58:38,174 INFO L242 Difference]: Finished difference. Result has 262 places, 274 transitions, 697 flow [2022-07-21 08:58:38,175 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=697, PETRI_PLACES=262, PETRI_TRANSITIONS=274} [2022-07-21 08:58:38,177 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 13 predicate places. [2022-07-21 08:58:38,177 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 274 transitions, 697 flow [2022-07-21 08:58:38,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:38,178 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:38,178 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:38,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:58:38,178 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)] === [2022-07-21 08:58:38,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:38,179 INFO L85 PathProgramCache]: Analyzing trace with hash 408976517, now seen corresponding path program 2 times [2022-07-21 08:58:38,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:38,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060148642] [2022-07-21 08:58:38,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:38,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:38,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:38,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:38,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060148642] [2022-07-21 08:58:38,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060148642] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:38,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:38,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:58:38,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071433420] [2022-07-21 08:58:38,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:38,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:58:38,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:38,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:58:38,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:58:38,216 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 278 [2022-07-21 08:58:38,217 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 274 transitions, 697 flow. Second operand has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:38,217 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:38,217 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 278 [2022-07-21 08:58:38,217 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:38,450 INFO L129 PetriNetUnfolder]: 151/2281 cut-off events. [2022-07-21 08:58:38,450 INFO L130 PetriNetUnfolder]: For 223/268 co-relation queries the response was YES. [2022-07-21 08:58:38,461 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2844 conditions, 2281 events. 151/2281 cut-off events. For 223/268 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 21128 event pairs, 26 based on Foata normal form. 28/2132 useless extension candidates. Maximal degree in co-relation 2111. Up to 100 conditions per place. [2022-07-21 08:58:38,468 INFO L132 encePairwiseOnDemand]: 270/278 looper letters, 24 selfloop transitions, 4 changer transitions 0/282 dead transitions. [2022-07-21 08:58:38,468 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 282 transitions, 781 flow [2022-07-21 08:58:38,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:58:38,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:58:38,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 790 transitions. [2022-07-21 08:58:38,470 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.947242206235012 [2022-07-21 08:58:38,470 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 790 transitions. [2022-07-21 08:58:38,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 790 transitions. [2022-07-21 08:58:38,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:38,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 790 transitions. [2022-07-21 08:58:38,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:38,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:38,473 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:38,473 INFO L186 Difference]: Start difference. First operand has 262 places, 274 transitions, 697 flow. Second operand 3 states and 790 transitions. [2022-07-21 08:58:38,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 282 transitions, 781 flow [2022-07-21 08:58:38,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 282 transitions, 769 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:58:38,479 INFO L242 Difference]: Finished difference. Result has 264 places, 278 transitions, 733 flow [2022-07-21 08:58:38,479 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=733, PETRI_PLACES=264, PETRI_TRANSITIONS=278} [2022-07-21 08:58:38,480 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 15 predicate places. [2022-07-21 08:58:38,480 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 278 transitions, 733 flow [2022-07-21 08:58:38,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:38,481 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:38,481 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:38,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:58:38,481 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)] === [2022-07-21 08:58:38,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:38,481 INFO L85 PathProgramCache]: Analyzing trace with hash -876327181, now seen corresponding path program 1 times [2022-07-21 08:58:38,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:38,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853857774] [2022-07-21 08:58:38,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:38,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:38,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:38,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:38,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853857774] [2022-07-21 08:58:38,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853857774] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:38,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:38,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:58:38,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494079969] [2022-07-21 08:58:38,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:38,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:58:38,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:38,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:58:38,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:58:38,578 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 278 [2022-07-21 08:58:38,580 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 278 transitions, 733 flow. Second operand has 7 states, 7 states have (on average 249.85714285714286) internal successors, (1749), 7 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:38,580 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:38,580 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 278 [2022-07-21 08:58:38,580 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:39,017 INFO L129 PetriNetUnfolder]: 597/4157 cut-off events. [2022-07-21 08:58:39,017 INFO L130 PetriNetUnfolder]: For 536/805 co-relation queries the response was YES. [2022-07-21 08:58:39,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6066 conditions, 4157 events. 597/4157 cut-off events. For 536/805 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 47066 event pairs, 368 based on Foata normal form. 47/3922 useless extension candidates. Maximal degree in co-relation 4264. Up to 887 conditions per place. [2022-07-21 08:58:39,040 INFO L132 encePairwiseOnDemand]: 266/278 looper letters, 31 selfloop transitions, 15 changer transitions 7/308 dead transitions. [2022-07-21 08:58:39,040 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 308 transitions, 922 flow [2022-07-21 08:58:39,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:58:39,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:58:39,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2276 transitions. [2022-07-21 08:58:39,043 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9096722621902478 [2022-07-21 08:58:39,043 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2276 transitions. [2022-07-21 08:58:39,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2276 transitions. [2022-07-21 08:58:39,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:39,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2276 transitions. [2022-07-21 08:58:39,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 252.88888888888889) internal successors, (2276), 9 states have internal predecessors, (2276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:39,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:39,050 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:39,050 INFO L186 Difference]: Start difference. First operand has 264 places, 278 transitions, 733 flow. Second operand 9 states and 2276 transitions. [2022-07-21 08:58:39,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 308 transitions, 922 flow [2022-07-21 08:58:39,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 308 transitions, 910 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-07-21 08:58:39,055 INFO L242 Difference]: Finished difference. Result has 278 places, 290 transitions, 831 flow [2022-07-21 08:58:39,056 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=831, PETRI_PLACES=278, PETRI_TRANSITIONS=290} [2022-07-21 08:58:39,056 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 29 predicate places. [2022-07-21 08:58:39,056 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 290 transitions, 831 flow [2022-07-21 08:58:39,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 249.85714285714286) internal successors, (1749), 7 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:39,057 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:39,057 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:39,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:58:39,057 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)] === [2022-07-21 08:58:39,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:39,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1337683571, now seen corresponding path program 2 times [2022-07-21 08:58:39,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:39,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368574993] [2022-07-21 08:58:39,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:39,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:39,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:39,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:39,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368574993] [2022-07-21 08:58:39,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368574993] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:39,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:39,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:58:39,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154807511] [2022-07-21 08:58:39,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:39,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:58:39,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:39,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:58:39,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:58:39,148 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 278 [2022-07-21 08:58:39,152 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 290 transitions, 831 flow. Second operand has 7 states, 7 states have (on average 253.28571428571428) internal successors, (1773), 7 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:39,152 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:39,152 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 278 [2022-07-21 08:58:39,152 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:39,455 INFO L129 PetriNetUnfolder]: 267/2493 cut-off events. [2022-07-21 08:58:39,456 INFO L130 PetriNetUnfolder]: For 565/678 co-relation queries the response was YES. [2022-07-21 08:58:39,468 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4041 conditions, 2493 events. 267/2493 cut-off events. For 565/678 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 26436 event pairs, 107 based on Foata normal form. 3/2328 useless extension candidates. Maximal degree in co-relation 4002. Up to 339 conditions per place. [2022-07-21 08:58:39,472 INFO L132 encePairwiseOnDemand]: 270/278 looper letters, 17 selfloop transitions, 7 changer transitions 20/304 dead transitions. [2022-07-21 08:58:39,473 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 304 transitions, 952 flow [2022-07-21 08:58:39,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:58:39,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:58:39,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2296 transitions. [2022-07-21 08:58:39,477 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9176658673061551 [2022-07-21 08:58:39,477 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2296 transitions. [2022-07-21 08:58:39,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2296 transitions. [2022-07-21 08:58:39,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:39,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2296 transitions. [2022-07-21 08:58:39,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 255.11111111111111) internal successors, (2296), 9 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:39,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:39,486 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:39,486 INFO L186 Difference]: Start difference. First operand has 278 places, 290 transitions, 831 flow. Second operand 9 states and 2296 transitions. [2022-07-21 08:58:39,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 304 transitions, 952 flow [2022-07-21 08:58:39,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 304 transitions, 946 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-07-21 08:58:39,494 INFO L242 Difference]: Finished difference. Result has 285 places, 284 transitions, 819 flow [2022-07-21 08:58:39,494 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=819, PETRI_PLACES=285, PETRI_TRANSITIONS=284} [2022-07-21 08:58:39,495 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 36 predicate places. [2022-07-21 08:58:39,495 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 284 transitions, 819 flow [2022-07-21 08:58:39,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 253.28571428571428) internal successors, (1773), 7 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:39,496 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:39,496 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:39,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:58:39,496 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)] === [2022-07-21 08:58:39,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:39,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1671544335, now seen corresponding path program 1 times [2022-07-21 08:58:39,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:39,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670411153] [2022-07-21 08:58:39,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:39,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:39,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:39,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:39,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670411153] [2022-07-21 08:58:39,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670411153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:39,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:39,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:58:39,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53766128] [2022-07-21 08:58:39,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:39,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:58:39,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:39,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:58:39,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:58:39,632 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 278 [2022-07-21 08:58:39,634 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 284 transitions, 819 flow. Second operand has 8 states, 8 states have (on average 249.5) internal successors, (1996), 8 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:39,635 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:39,635 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 278 [2022-07-21 08:58:39,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:40,028 INFO L129 PetriNetUnfolder]: 514/3416 cut-off events. [2022-07-21 08:58:40,029 INFO L130 PetriNetUnfolder]: For 1572/1735 co-relation queries the response was YES. [2022-07-21 08:58:40,046 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6154 conditions, 3416 events. 514/3416 cut-off events. For 1572/1735 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 37551 event pairs, 285 based on Foata normal form. 22/3167 useless extension candidates. Maximal degree in co-relation 6123. Up to 663 conditions per place. [2022-07-21 08:58:40,053 INFO L132 encePairwiseOnDemand]: 268/278 looper letters, 36 selfloop transitions, 7 changer transitions 18/313 dead transitions. [2022-07-21 08:58:40,053 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 313 transitions, 1063 flow [2022-07-21 08:58:40,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:58:40,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:58:40,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2522 transitions. [2022-07-21 08:58:40,056 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9071942446043165 [2022-07-21 08:58:40,056 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2522 transitions. [2022-07-21 08:58:40,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2522 transitions. [2022-07-21 08:58:40,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:40,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2522 transitions. [2022-07-21 08:58:40,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 252.2) internal successors, (2522), 10 states have internal predecessors, (2522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:40,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 278.0) internal successors, (3058), 11 states have internal predecessors, (3058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:40,073 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 278.0) internal successors, (3058), 11 states have internal predecessors, (3058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:40,073 INFO L186 Difference]: Start difference. First operand has 285 places, 284 transitions, 819 flow. Second operand 10 states and 2522 transitions. [2022-07-21 08:58:40,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 313 transitions, 1063 flow [2022-07-21 08:58:40,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 313 transitions, 1056 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-07-21 08:58:40,082 INFO L242 Difference]: Finished difference. Result has 295 places, 285 transitions, 859 flow [2022-07-21 08:58:40,083 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=859, PETRI_PLACES=295, PETRI_TRANSITIONS=285} [2022-07-21 08:58:40,083 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 46 predicate places. [2022-07-21 08:58:40,083 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 285 transitions, 859 flow [2022-07-21 08:58:40,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 249.5) internal successors, (1996), 8 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:40,084 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:40,084 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:40,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 08:58:40,084 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)] === [2022-07-21 08:58:40,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:40,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1283281750, now seen corresponding path program 1 times [2022-07-21 08:58:40,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:40,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909095469] [2022-07-21 08:58:40,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:40,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:40,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:40,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:40,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909095469] [2022-07-21 08:58:40,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909095469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:40,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:40,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:58:40,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199300767] [2022-07-21 08:58:40,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:40,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:58:40,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:40,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:58:40,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:58:40,154 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 278 [2022-07-21 08:58:40,155 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 285 transitions, 859 flow. Second operand has 7 states, 7 states have (on average 253.28571428571428) internal successors, (1773), 7 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:40,155 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:40,155 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 278 [2022-07-21 08:58:40,155 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:40,392 INFO L129 PetriNetUnfolder]: 125/1855 cut-off events. [2022-07-21 08:58:40,392 INFO L130 PetriNetUnfolder]: For 352/449 co-relation queries the response was YES. [2022-07-21 08:58:40,407 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2735 conditions, 1855 events. 125/1855 cut-off events. For 352/449 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 18027 event pairs, 22 based on Foata normal form. 2/1719 useless extension candidates. Maximal degree in co-relation 2704. Up to 78 conditions per place. [2022-07-21 08:58:40,411 INFO L132 encePairwiseOnDemand]: 270/278 looper letters, 18 selfloop transitions, 2 changer transitions 17/305 dead transitions. [2022-07-21 08:58:40,411 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 305 transitions, 1002 flow [2022-07-21 08:58:40,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:58:40,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:58:40,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2297 transitions. [2022-07-21 08:58:40,415 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9180655475619505 [2022-07-21 08:58:40,415 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2297 transitions. [2022-07-21 08:58:40,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2297 transitions. [2022-07-21 08:58:40,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:40,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2297 transitions. [2022-07-21 08:58:40,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 255.22222222222223) internal successors, (2297), 9 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:40,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:40,421 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:40,421 INFO L186 Difference]: Start difference. First operand has 295 places, 285 transitions, 859 flow. Second operand 9 states and 2297 transitions. [2022-07-21 08:58:40,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 305 transitions, 1002 flow [2022-07-21 08:58:40,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 305 transitions, 979 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-07-21 08:58:40,428 INFO L242 Difference]: Finished difference. Result has 302 places, 286 transitions, 865 flow [2022-07-21 08:58:40,428 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=865, PETRI_PLACES=302, PETRI_TRANSITIONS=286} [2022-07-21 08:58:40,429 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 53 predicate places. [2022-07-21 08:58:40,429 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 286 transitions, 865 flow [2022-07-21 08:58:40,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 253.28571428571428) internal successors, (1773), 7 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:40,429 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:40,429 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:40,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 08:58:40,430 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)] === [2022-07-21 08:58:40,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:40,431 INFO L85 PathProgramCache]: Analyzing trace with hash -14993302, now seen corresponding path program 1 times [2022-07-21 08:58:40,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:40,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671352789] [2022-07-21 08:58:40,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:40,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:40,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:40,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:40,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671352789] [2022-07-21 08:58:40,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671352789] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:40,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:40,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:58:40,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116078687] [2022-07-21 08:58:40,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:40,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:58:40,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:40,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:58:40,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:58:40,461 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 278 [2022-07-21 08:58:40,461 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 286 transitions, 865 flow. Second operand has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:40,461 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:40,461 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 278 [2022-07-21 08:58:40,461 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:40,639 INFO L129 PetriNetUnfolder]: 104/2029 cut-off events. [2022-07-21 08:58:40,639 INFO L130 PetriNetUnfolder]: For 344/449 co-relation queries the response was YES. [2022-07-21 08:58:40,653 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2917 conditions, 2029 events. 104/2029 cut-off events. For 344/449 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 19656 event pairs, 19 based on Foata normal form. 3/1878 useless extension candidates. Maximal degree in co-relation 2882. Up to 90 conditions per place. [2022-07-21 08:58:40,657 INFO L132 encePairwiseOnDemand]: 272/278 looper letters, 15 selfloop transitions, 4 changer transitions 0/293 dead transitions. [2022-07-21 08:58:40,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 293 transitions, 922 flow [2022-07-21 08:58:40,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:58:40,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:58:40,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 795 transitions. [2022-07-21 08:58:40,659 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9532374100719424 [2022-07-21 08:58:40,659 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 795 transitions. [2022-07-21 08:58:40,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 795 transitions. [2022-07-21 08:58:40,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:40,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 795 transitions. [2022-07-21 08:58:40,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:40,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:40,661 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:40,661 INFO L186 Difference]: Start difference. First operand has 302 places, 286 transitions, 865 flow. Second operand 3 states and 795 transitions. [2022-07-21 08:58:40,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 293 transitions, 922 flow [2022-07-21 08:58:40,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 293 transitions, 909 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-07-21 08:58:40,668 INFO L242 Difference]: Finished difference. Result has 295 places, 288 transitions, 880 flow [2022-07-21 08:58:40,668 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=880, PETRI_PLACES=295, PETRI_TRANSITIONS=288} [2022-07-21 08:58:40,669 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 46 predicate places. [2022-07-21 08:58:40,669 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 288 transitions, 880 flow [2022-07-21 08:58:40,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:40,669 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:40,669 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:40,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:58:40,669 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)] === [2022-07-21 08:58:40,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:40,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1202030338, now seen corresponding path program 1 times [2022-07-21 08:58:40,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:40,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428793023] [2022-07-21 08:58:40,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:40,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:40,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:40,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:40,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428793023] [2022-07-21 08:58:40,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428793023] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:40,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:40,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:58:40,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987925510] [2022-07-21 08:58:40,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:40,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:58:40,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:40,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:58:40,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:58:40,696 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 278 [2022-07-21 08:58:40,696 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 288 transitions, 880 flow. Second operand has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:40,696 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:40,696 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 278 [2022-07-21 08:58:40,696 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:41,070 INFO L129 PetriNetUnfolder]: 201/3760 cut-off events. [2022-07-21 08:58:41,070 INFO L130 PetriNetUnfolder]: For 932/1118 co-relation queries the response was YES. [2022-07-21 08:58:41,089 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5429 conditions, 3760 events. 201/3760 cut-off events. For 932/1118 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 43969 event pairs, 48 based on Foata normal form. 7/3497 useless extension candidates. Maximal degree in co-relation 5262. Up to 130 conditions per place. [2022-07-21 08:58:41,098 INFO L132 encePairwiseOnDemand]: 270/278 looper letters, 17 selfloop transitions, 5 changer transitions 0/296 dead transitions. [2022-07-21 08:58:41,098 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 296 transitions, 945 flow [2022-07-21 08:58:41,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:58:41,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:58:41,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 793 transitions. [2022-07-21 08:58:41,100 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9508393285371702 [2022-07-21 08:58:41,100 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 793 transitions. [2022-07-21 08:58:41,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 793 transitions. [2022-07-21 08:58:41,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:41,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 793 transitions. [2022-07-21 08:58:41,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:41,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:41,103 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:41,103 INFO L186 Difference]: Start difference. First operand has 295 places, 288 transitions, 880 flow. Second operand 3 states and 793 transitions. [2022-07-21 08:58:41,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 296 transitions, 945 flow [2022-07-21 08:58:41,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 296 transitions, 937 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:58:41,112 INFO L242 Difference]: Finished difference. Result has 297 places, 291 transitions, 910 flow [2022-07-21 08:58:41,112 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=910, PETRI_PLACES=297, PETRI_TRANSITIONS=291} [2022-07-21 08:58:41,113 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 48 predicate places. [2022-07-21 08:58:41,113 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 291 transitions, 910 flow [2022-07-21 08:58:41,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:41,113 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:41,114 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:41,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:58:41,114 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)] === [2022-07-21 08:58:41,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:41,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1270908768, now seen corresponding path program 2 times [2022-07-21 08:58:41,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:41,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733984770] [2022-07-21 08:58:41,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:41,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:41,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:41,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:41,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733984770] [2022-07-21 08:58:41,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733984770] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:41,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:41,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:58:41,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430452281] [2022-07-21 08:58:41,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:41,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:58:41,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:41,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:58:41,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:58:41,137 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 278 [2022-07-21 08:58:41,137 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 291 transitions, 910 flow. Second operand has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:41,137 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:41,137 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 278 [2022-07-21 08:58:41,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:41,398 INFO L129 PetriNetUnfolder]: 154/3010 cut-off events. [2022-07-21 08:58:41,398 INFO L130 PetriNetUnfolder]: For 1022/1237 co-relation queries the response was YES. [2022-07-21 08:58:41,424 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4519 conditions, 3010 events. 154/3010 cut-off events. For 1022/1237 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 32087 event pairs, 44 based on Foata normal form. 25/2830 useless extension candidates. Maximal degree in co-relation 4342. Up to 111 conditions per place. [2022-07-21 08:58:41,430 INFO L132 encePairwiseOnDemand]: 272/278 looper letters, 22 selfloop transitions, 3 changer transitions 0/299 dead transitions. [2022-07-21 08:58:41,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 299 transitions, 987 flow [2022-07-21 08:58:41,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:58:41,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:58:41,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 793 transitions. [2022-07-21 08:58:41,432 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9508393285371702 [2022-07-21 08:58:41,432 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 793 transitions. [2022-07-21 08:58:41,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 793 transitions. [2022-07-21 08:58:41,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:41,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 793 transitions. [2022-07-21 08:58:41,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:41,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:41,435 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:41,435 INFO L186 Difference]: Start difference. First operand has 297 places, 291 transitions, 910 flow. Second operand 3 states and 793 transitions. [2022-07-21 08:58:41,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 299 transitions, 987 flow [2022-07-21 08:58:41,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 299 transitions, 977 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:58:41,445 INFO L242 Difference]: Finished difference. Result has 299 places, 294 transitions, 936 flow [2022-07-21 08:58:41,445 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=936, PETRI_PLACES=299, PETRI_TRANSITIONS=294} [2022-07-21 08:58:41,446 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 50 predicate places. [2022-07-21 08:58:41,446 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 294 transitions, 936 flow [2022-07-21 08:58:41,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:41,446 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:41,446 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:41,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 08:58:41,447 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)] === [2022-07-21 08:58:41,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:41,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1750302656, now seen corresponding path program 1 times [2022-07-21 08:58:41,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:41,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009288897] [2022-07-21 08:58:41,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:41,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:41,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:41,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:41,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:41,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009288897] [2022-07-21 08:58:41,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009288897] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:41,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:41,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:58:41,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836783900] [2022-07-21 08:58:41,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:41,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:58:41,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:41,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:58:41,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:58:41,468 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 278 [2022-07-21 08:58:41,468 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 294 transitions, 936 flow. Second operand has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:41,469 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:41,469 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 278 [2022-07-21 08:58:41,469 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:41,731 INFO L129 PetriNetUnfolder]: 126/2616 cut-off events. [2022-07-21 08:58:41,731 INFO L130 PetriNetUnfolder]: For 603/762 co-relation queries the response was YES. [2022-07-21 08:58:41,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3832 conditions, 2616 events. 126/2616 cut-off events. For 603/762 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 25825 event pairs, 29 based on Foata normal form. 3/2437 useless extension candidates. Maximal degree in co-relation 3681. Up to 116 conditions per place. [2022-07-21 08:58:41,755 INFO L132 encePairwiseOnDemand]: 274/278 looper letters, 19 selfloop transitions, 2 changer transitions 0/301 dead transitions. [2022-07-21 08:58:41,755 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 301 transitions, 1001 flow [2022-07-21 08:58:41,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:58:41,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:58:41,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 795 transitions. [2022-07-21 08:58:41,757 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9532374100719424 [2022-07-21 08:58:41,757 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 795 transitions. [2022-07-21 08:58:41,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 795 transitions. [2022-07-21 08:58:41,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:41,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 795 transitions. [2022-07-21 08:58:41,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:41,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:41,760 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:41,760 INFO L186 Difference]: Start difference. First operand has 299 places, 294 transitions, 936 flow. Second operand 3 states and 795 transitions. [2022-07-21 08:58:41,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 301 transitions, 1001 flow [2022-07-21 08:58:41,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 301 transitions, 992 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-07-21 08:58:41,768 INFO L242 Difference]: Finished difference. Result has 302 places, 296 transitions, 951 flow [2022-07-21 08:58:41,768 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=951, PETRI_PLACES=302, PETRI_TRANSITIONS=296} [2022-07-21 08:58:41,769 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 53 predicate places. [2022-07-21 08:58:41,769 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 296 transitions, 951 flow [2022-07-21 08:58:41,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:41,769 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:41,769 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:41,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 08:58:41,770 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)] === [2022-07-21 08:58:41,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:41,770 INFO L85 PathProgramCache]: Analyzing trace with hash 188483036, now seen corresponding path program 1 times [2022-07-21 08:58:41,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:41,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9823612] [2022-07-21 08:58:41,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:41,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:41,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:41,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:41,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9823612] [2022-07-21 08:58:41,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9823612] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:41,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:41,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:58:41,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900509145] [2022-07-21 08:58:41,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:41,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:58:41,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:41,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:58:41,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:58:41,849 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 278 [2022-07-21 08:58:41,851 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 296 transitions, 951 flow. Second operand has 10 states, 10 states have (on average 243.4) internal successors, (2434), 10 states have internal predecessors, (2434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:41,851 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:41,851 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 278 [2022-07-21 08:58:41,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:42,750 INFO L129 PetriNetUnfolder]: 1357/6298 cut-off events. [2022-07-21 08:58:42,750 INFO L130 PetriNetUnfolder]: For 6032/7110 co-relation queries the response was YES. [2022-07-21 08:58:42,792 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13577 conditions, 6298 events. 1357/6298 cut-off events. For 6032/7110 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 73856 event pairs, 718 based on Foata normal form. 76/5790 useless extension candidates. Maximal degree in co-relation 12234. Up to 1531 conditions per place. [2022-07-21 08:58:42,806 INFO L132 encePairwiseOnDemand]: 263/278 looper letters, 87 selfloop transitions, 19 changer transitions 12/375 dead transitions. [2022-07-21 08:58:42,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 375 transitions, 1594 flow [2022-07-21 08:58:42,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 08:58:42,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 08:58:42,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4438 transitions. [2022-07-21 08:58:42,812 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8868904876099121 [2022-07-21 08:58:42,812 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4438 transitions. [2022-07-21 08:58:42,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4438 transitions. [2022-07-21 08:58:42,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:42,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4438 transitions. [2022-07-21 08:58:42,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 246.55555555555554) internal successors, (4438), 18 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:42,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 278.0) internal successors, (5282), 19 states have internal predecessors, (5282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:42,824 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 278.0) internal successors, (5282), 19 states have internal predecessors, (5282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:42,824 INFO L186 Difference]: Start difference. First operand has 302 places, 296 transitions, 951 flow. Second operand 18 states and 4438 transitions. [2022-07-21 08:58:42,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 375 transitions, 1594 flow [2022-07-21 08:58:42,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 375 transitions, 1588 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-21 08:58:42,846 INFO L242 Difference]: Finished difference. Result has 329 places, 307 transitions, 1092 flow [2022-07-21 08:58:42,847 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1092, PETRI_PLACES=329, PETRI_TRANSITIONS=307} [2022-07-21 08:58:42,847 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 80 predicate places. [2022-07-21 08:58:42,847 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 307 transitions, 1092 flow [2022-07-21 08:58:42,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 243.4) internal successors, (2434), 10 states have internal predecessors, (2434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:42,848 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:42,848 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:42,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 08:58:42,848 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)] === [2022-07-21 08:58:42,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:42,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1504883712, now seen corresponding path program 1 times [2022-07-21 08:58:42,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:42,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396778681] [2022-07-21 08:58:42,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:42,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:42,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:42,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:42,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396778681] [2022-07-21 08:58:42,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396778681] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:42,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:42,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:58:42,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967664803] [2022-07-21 08:58:42,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:42,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:58:42,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:42,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:58:42,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:58:42,871 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 278 [2022-07-21 08:58:42,872 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 307 transitions, 1092 flow. Second operand has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:42,872 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:42,872 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 278 [2022-07-21 08:58:42,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:43,428 INFO L129 PetriNetUnfolder]: 223/5999 cut-off events. [2022-07-21 08:58:43,429 INFO L130 PetriNetUnfolder]: For 2667/2986 co-relation queries the response was YES. [2022-07-21 08:58:43,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9679 conditions, 5999 events. 223/5999 cut-off events. For 2667/2986 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 73313 event pairs, 94 based on Foata normal form. 5/5631 useless extension candidates. Maximal degree in co-relation 9615. Up to 290 conditions per place. [2022-07-21 08:58:43,481 INFO L132 encePairwiseOnDemand]: 268/278 looper letters, 18 selfloop transitions, 6 changer transitions 5/315 dead transitions. [2022-07-21 08:58:43,481 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 315 transitions, 1160 flow [2022-07-21 08:58:43,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:58:43,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:58:43,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 790 transitions. [2022-07-21 08:58:43,483 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.947242206235012 [2022-07-21 08:58:43,483 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 790 transitions. [2022-07-21 08:58:43,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 790 transitions. [2022-07-21 08:58:43,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:43,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 790 transitions. [2022-07-21 08:58:43,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:43,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:43,486 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:43,486 INFO L186 Difference]: Start difference. First operand has 329 places, 307 transitions, 1092 flow. Second operand 3 states and 790 transitions. [2022-07-21 08:58:43,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 315 transitions, 1160 flow [2022-07-21 08:58:43,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 315 transitions, 1129 flow, removed 8 selfloop flow, removed 9 redundant places. [2022-07-21 08:58:43,518 INFO L242 Difference]: Finished difference. Result has 322 places, 306 transitions, 1084 flow [2022-07-21 08:58:43,518 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=1061, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1084, PETRI_PLACES=322, PETRI_TRANSITIONS=306} [2022-07-21 08:58:43,518 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 73 predicate places. [2022-07-21 08:58:43,518 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 306 transitions, 1084 flow [2022-07-21 08:58:43,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:43,519 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:43,519 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:43,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 08:58:43,519 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)] === [2022-07-21 08:58:43,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:43,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1011700246, now seen corresponding path program 1 times [2022-07-21 08:58:43,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:43,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946952229] [2022-07-21 08:58:43,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:43,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:43,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:43,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:43,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946952229] [2022-07-21 08:58:43,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946952229] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:43,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:43,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:58:43,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758891915] [2022-07-21 08:58:43,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:43,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:58:43,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:43,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:58:43,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:58:43,541 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 278 [2022-07-21 08:58:43,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 306 transitions, 1084 flow. Second operand has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:43,542 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:43,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 278 [2022-07-21 08:58:43,542 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:43,974 INFO L129 PetriNetUnfolder]: 187/4582 cut-off events. [2022-07-21 08:58:43,974 INFO L130 PetriNetUnfolder]: For 1979/2592 co-relation queries the response was YES. [2022-07-21 08:58:43,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7396 conditions, 4582 events. 187/4582 cut-off events. For 1979/2592 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 52334 event pairs, 60 based on Foata normal form. 48/4399 useless extension candidates. Maximal degree in co-relation 7078. Up to 270 conditions per place. [2022-07-21 08:58:43,998 INFO L132 encePairwiseOnDemand]: 270/278 looper letters, 24 selfloop transitions, 4 changer transitions 22/314 dead transitions. [2022-07-21 08:58:43,998 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 314 transitions, 1168 flow [2022-07-21 08:58:43,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:58:43,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:58:43,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 790 transitions. [2022-07-21 08:58:43,999 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.947242206235012 [2022-07-21 08:58:44,000 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 790 transitions. [2022-07-21 08:58:44,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 790 transitions. [2022-07-21 08:58:44,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:44,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 790 transitions. [2022-07-21 08:58:44,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,002 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,003 INFO L186 Difference]: Start difference. First operand has 322 places, 306 transitions, 1084 flow. Second operand 3 states and 790 transitions. [2022-07-21 08:58:44,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 314 transitions, 1168 flow [2022-07-21 08:58:44,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 314 transitions, 1152 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-07-21 08:58:44,019 INFO L242 Difference]: Finished difference. Result has 319 places, 288 transitions, 957 flow [2022-07-21 08:58:44,019 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=957, PETRI_PLACES=319, PETRI_TRANSITIONS=288} [2022-07-21 08:58:44,020 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 70 predicate places. [2022-07-21 08:58:44,020 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 288 transitions, 957 flow [2022-07-21 08:58:44,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,020 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:44,021 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:44,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 08:58:44,021 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)] === [2022-07-21 08:58:44,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:44,021 INFO L85 PathProgramCache]: Analyzing trace with hash -589076536, now seen corresponding path program 1 times [2022-07-21 08:58:44,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:44,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50240240] [2022-07-21 08:58:44,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:44,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:44,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:44,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:44,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50240240] [2022-07-21 08:58:44,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50240240] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:44,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:44,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:58:44,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475829950] [2022-07-21 08:58:44,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:44,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:58:44,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:44,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:58:44,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:58:44,077 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 278 [2022-07-21 08:58:44,079 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 288 transitions, 957 flow. Second operand has 9 states, 9 states have (on average 247.22222222222223) internal successors, (2225), 9 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,079 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:44,079 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 278 [2022-07-21 08:58:44,079 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:44,502 INFO L129 PetriNetUnfolder]: 355/3701 cut-off events. [2022-07-21 08:58:44,502 INFO L130 PetriNetUnfolder]: For 1824/2432 co-relation queries the response was YES. [2022-07-21 08:58:44,530 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6613 conditions, 3701 events. 355/3701 cut-off events. For 1824/2432 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 41345 event pairs, 104 based on Foata normal form. 16/3498 useless extension candidates. Maximal degree in co-relation 6576. Up to 423 conditions per place. [2022-07-21 08:58:44,537 INFO L132 encePairwiseOnDemand]: 265/278 looper letters, 39 selfloop transitions, 13 changer transitions 9/311 dead transitions. [2022-07-21 08:58:44,537 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 311 transitions, 1169 flow [2022-07-21 08:58:44,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:58:44,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:58:44,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2253 transitions. [2022-07-21 08:58:44,541 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9004796163069544 [2022-07-21 08:58:44,541 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2253 transitions. [2022-07-21 08:58:44,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2253 transitions. [2022-07-21 08:58:44,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:44,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2253 transitions. [2022-07-21 08:58:44,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 250.33333333333334) internal successors, (2253), 9 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,547 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,547 INFO L186 Difference]: Start difference. First operand has 319 places, 288 transitions, 957 flow. Second operand 9 states and 2253 transitions. [2022-07-21 08:58:44,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 311 transitions, 1169 flow [2022-07-21 08:58:44,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 311 transitions, 1127 flow, removed 17 selfloop flow, removed 6 redundant places. [2022-07-21 08:58:44,564 INFO L242 Difference]: Finished difference. Result has 315 places, 296 transitions, 1030 flow [2022-07-21 08:58:44,565 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=919, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1030, PETRI_PLACES=315, PETRI_TRANSITIONS=296} [2022-07-21 08:58:44,565 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 66 predicate places. [2022-07-21 08:58:44,565 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 296 transitions, 1030 flow [2022-07-21 08:58:44,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 247.22222222222223) internal successors, (2225), 9 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,566 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:44,566 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:44,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 08:58:44,566 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)] === [2022-07-21 08:58:44,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:44,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1255278944, now seen corresponding path program 1 times [2022-07-21 08:58:44,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:44,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826406431] [2022-07-21 08:58:44,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:44,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:44,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:44,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:44,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826406431] [2022-07-21 08:58:44,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826406431] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:44,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:44,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:58:44,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463857655] [2022-07-21 08:58:44,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:44,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:58:44,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:44,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:58:44,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:58:44,621 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 278 [2022-07-21 08:58:44,622 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 296 transitions, 1030 flow. Second operand has 9 states, 9 states have (on average 247.22222222222223) internal successors, (2225), 9 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:44,622 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:44,622 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 278 [2022-07-21 08:58:44,623 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:45,140 INFO L129 PetriNetUnfolder]: 509/3750 cut-off events. [2022-07-21 08:58:45,140 INFO L130 PetriNetUnfolder]: For 1051/1210 co-relation queries the response was YES. [2022-07-21 08:58:45,158 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6390 conditions, 3750 events. 509/3750 cut-off events. For 1051/1210 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 44107 event pairs, 359 based on Foata normal form. 3/3392 useless extension candidates. Maximal degree in co-relation 6350. Up to 1267 conditions per place. [2022-07-21 08:58:45,161 INFO L132 encePairwiseOnDemand]: 266/278 looper letters, 31 selfloop transitions, 9 changer transitions 17/326 dead transitions. [2022-07-21 08:58:45,161 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 326 transitions, 1221 flow [2022-07-21 08:58:45,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:58:45,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:58:45,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3239 transitions. [2022-07-21 08:58:45,173 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8962368566685114 [2022-07-21 08:58:45,173 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3239 transitions. [2022-07-21 08:58:45,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3239 transitions. [2022-07-21 08:58:45,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:45,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3239 transitions. [2022-07-21 08:58:45,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 249.15384615384616) internal successors, (3239), 13 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:45,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 278.0) internal successors, (3892), 14 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:45,182 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 278.0) internal successors, (3892), 14 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:45,182 INFO L186 Difference]: Start difference. First operand has 315 places, 296 transitions, 1030 flow. Second operand 13 states and 3239 transitions. [2022-07-21 08:58:45,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 326 transitions, 1221 flow [2022-07-21 08:58:45,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 326 transitions, 1188 flow, removed 14 selfloop flow, removed 3 redundant places. [2022-07-21 08:58:45,192 INFO L242 Difference]: Finished difference. Result has 333 places, 300 transitions, 1053 flow [2022-07-21 08:58:45,193 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1053, PETRI_PLACES=333, PETRI_TRANSITIONS=300} [2022-07-21 08:58:45,193 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 84 predicate places. [2022-07-21 08:58:45,193 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 300 transitions, 1053 flow [2022-07-21 08:58:45,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 247.22222222222223) internal successors, (2225), 9 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:45,194 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:45,194 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:45,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 08:58:45,195 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)] === [2022-07-21 08:58:45,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:45,195 INFO L85 PathProgramCache]: Analyzing trace with hash -87991940, now seen corresponding path program 1 times [2022-07-21 08:58:45,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:45,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264442891] [2022-07-21 08:58:45,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:45,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:45,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:45,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:45,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264442891] [2022-07-21 08:58:45,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264442891] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:45,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:45,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:58:45,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564125526] [2022-07-21 08:58:45,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:45,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:58:45,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:45,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:58:45,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:58:45,278 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 278 [2022-07-21 08:58:45,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 300 transitions, 1053 flow. Second operand has 10 states, 10 states have (on average 243.4) internal successors, (2434), 10 states have internal predecessors, (2434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:45,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:45,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 278 [2022-07-21 08:58:45,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:46,095 INFO L129 PetriNetUnfolder]: 1085/7210 cut-off events. [2022-07-21 08:58:46,096 INFO L130 PetriNetUnfolder]: For 8429/9160 co-relation queries the response was YES. [2022-07-21 08:58:46,152 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15315 conditions, 7210 events. 1085/7210 cut-off events. For 8429/9160 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 88983 event pairs, 758 based on Foata normal form. 154/6774 useless extension candidates. Maximal degree in co-relation 15266. Up to 1515 conditions per place. [2022-07-21 08:58:46,162 INFO L132 encePairwiseOnDemand]: 264/278 looper letters, 56 selfloop transitions, 11 changer transitions 32/368 dead transitions. [2022-07-21 08:58:46,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 368 transitions, 1670 flow [2022-07-21 08:58:46,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:58:46,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-21 08:58:46,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3451 transitions. [2022-07-21 08:58:46,262 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8866906474820144 [2022-07-21 08:58:46,262 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3451 transitions. [2022-07-21 08:58:46,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3451 transitions. [2022-07-21 08:58:46,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:46,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3451 transitions. [2022-07-21 08:58:46,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 246.5) internal successors, (3451), 14 states have internal predecessors, (3451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 278.0) internal successors, (4170), 15 states have internal predecessors, (4170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,270 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 278.0) internal successors, (4170), 15 states have internal predecessors, (4170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,271 INFO L186 Difference]: Start difference. First operand has 333 places, 300 transitions, 1053 flow. Second operand 14 states and 3451 transitions. [2022-07-21 08:58:46,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 368 transitions, 1670 flow [2022-07-21 08:58:46,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 368 transitions, 1659 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-07-21 08:58:46,311 INFO L242 Difference]: Finished difference. Result has 347 places, 308 transitions, 1123 flow [2022-07-21 08:58:46,311 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1123, PETRI_PLACES=347, PETRI_TRANSITIONS=308} [2022-07-21 08:58:46,312 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 98 predicate places. [2022-07-21 08:58:46,312 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 308 transitions, 1123 flow [2022-07-21 08:58:46,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 243.4) internal successors, (2434), 10 states have internal predecessors, (2434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,312 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:46,313 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:46,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 08:58:46,313 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)] === [2022-07-21 08:58:46,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:46,313 INFO L85 PathProgramCache]: Analyzing trace with hash 489008084, now seen corresponding path program 1 times [2022-07-21 08:58:46,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:46,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079039494] [2022-07-21 08:58:46,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:46,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:46,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:46,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:46,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079039494] [2022-07-21 08:58:46,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079039494] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:46,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:46,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-07-21 08:58:46,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902889693] [2022-07-21 08:58:46,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:46,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-21 08:58:46,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:46,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-21 08:58:46,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2022-07-21 08:58:46,854 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 278 [2022-07-21 08:58:46,857 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 308 transitions, 1123 flow. Second operand has 34 states, 34 states have (on average 180.3235294117647) internal successors, (6131), 34 states have internal predecessors, (6131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:58:46,857 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:46,858 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 278 [2022-07-21 08:58:46,858 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:35,951 INFO L129 PetriNetUnfolder]: 68419/144617 cut-off events. [2022-07-21 08:59:35,952 INFO L130 PetriNetUnfolder]: For 151166/152332 co-relation queries the response was YES. [2022-07-21 08:59:38,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 369093 conditions, 144617 events. 68419/144617 cut-off events. For 151166/152332 co-relation queries the response was YES. Maximal size of possible extension queue 2465. Compared 1663257 event pairs, 31066 based on Foata normal form. 661/141309 useless extension candidates. Maximal degree in co-relation 369036. Up to 53274 conditions per place. [2022-07-21 08:59:38,835 INFO L132 encePairwiseOnDemand]: 230/278 looper letters, 1426 selfloop transitions, 293 changer transitions 827/2729 dead transitions. [2022-07-21 08:59:38,835 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 713 places, 2729 transitions, 16034 flow [2022-07-21 08:59:38,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 369 states. [2022-07-21 08:59:38,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2022-07-21 08:59:38,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 68121 transitions. [2022-07-21 08:59:38,886 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6640638708545359 [2022-07-21 08:59:38,886 INFO L72 ComplementDD]: Start complementDD. Operand 369 states and 68121 transitions. [2022-07-21 08:59:38,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 369 states and 68121 transitions. [2022-07-21 08:59:38,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:38,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 369 states and 68121 transitions. [2022-07-21 08:59:38,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 370 states, 369 states have (on average 184.609756097561) internal successors, (68121), 369 states have internal predecessors, (68121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:39,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 370 states, 370 states have (on average 278.0) internal successors, (102860), 370 states have internal predecessors, (102860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:39,247 INFO L81 ComplementDD]: Finished complementDD. Result has 370 states, 370 states have (on average 278.0) internal successors, (102860), 370 states have internal predecessors, (102860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:39,247 INFO L186 Difference]: Start difference. First operand has 347 places, 308 transitions, 1123 flow. Second operand 369 states and 68121 transitions. [2022-07-21 08:59:39,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 713 places, 2729 transitions, 16034 flow [2022-07-21 08:59:42,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 709 places, 2729 transitions, 16023 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-07-21 08:59:42,541 INFO L242 Difference]: Finished difference. Result has 1066 places, 625 transitions, 4862 flow [2022-07-21 08:59:42,542 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=369, PETRI_FLOW=4862, PETRI_PLACES=1066, PETRI_TRANSITIONS=625} [2022-07-21 08:59:42,542 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 817 predicate places. [2022-07-21 08:59:42,542 INFO L495 AbstractCegarLoop]: Abstraction has has 1066 places, 625 transitions, 4862 flow [2022-07-21 08:59:42,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 180.3235294117647) internal successors, (6131), 34 states have internal predecessors, (6131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:42,544 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:42,544 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:59:42,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 08:59:42,544 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)] === [2022-07-21 08:59:42,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:42,545 INFO L85 PathProgramCache]: Analyzing trace with hash 2031754960, now seen corresponding path program 2 times [2022-07-21 08:59:42,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:42,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438703478] [2022-07-21 08:59:42,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:42,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:43,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:43,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:43,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438703478] [2022-07-21 08:59:43,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438703478] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:43,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:43,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-07-21 08:59:43,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806259708] [2022-07-21 08:59:43,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:43,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-21 08:59:43,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:43,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-21 08:59:43,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2022-07-21 08:59:43,018 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 278 [2022-07-21 08:59:43,021 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1066 places, 625 transitions, 4862 flow. Second operand has 34 states, 34 states have (on average 180.3235294117647) internal successors, (6131), 34 states have internal predecessors, (6131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:43,021 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:43,021 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 278 [2022-07-21 08:59:43,021 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand