./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/queue_longer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/pthread/queue_longer.i -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 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:57:07,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:57:07,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:57:07,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:57:07,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:57:07,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:57:07,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:57:07,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:57:07,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:57:07,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:57:07,446 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:57:07,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:57:07,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:57:07,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:57:07,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:57:07,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:57:07,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:57:07,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:57:07,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:57:07,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:57:07,461 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:57:07,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:57:07,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:57:07,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:57:07,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:57:07,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:57:07,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:57:07,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:57:07,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:57:07,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:57:07,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:57:07,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:57:07,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:57:07,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:57:07,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:57:07,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:57:07,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:57:07,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:57:07,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:57:07,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:57:07,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:57:07,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:57:07,479 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:57:07,494 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:57:07,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:57:07,495 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:57:07,495 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:57:07,495 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:57:07,496 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:57:07,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:57:07,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:57:07,496 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:57:07,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:57:07,497 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:57:07,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:57:07,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:57:07,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:57:07,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:57:07,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:57:07,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:57:07,498 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:57:07,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:57:07,498 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:57:07,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:57:07,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:57:07,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:57:07,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:57:07,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:57:07,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:57:07,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:57:07,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:57:07,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:57:07,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:57:07,500 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:57:07,500 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:57:07,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:57:07,500 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 [2022-07-12 09:57:07,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:57:07,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:57:07,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:57:07,694 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:57:07,694 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:57:07,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue_longer.i [2022-07-12 09:57:07,742 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee69be56f/bbe504b5f4564971b2f13fc51e9bd5ee/FLAGba49e21d8 [2022-07-12 09:57:08,194 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:57:08,194 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_longer.i [2022-07-12 09:57:08,221 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee69be56f/bbe504b5f4564971b2f13fc51e9bd5ee/FLAGba49e21d8 [2022-07-12 09:57:08,232 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee69be56f/bbe504b5f4564971b2f13fc51e9bd5ee [2022-07-12 09:57:08,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:57:08,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:57:08,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:57:08,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:57:08,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:57:08,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:57:08" (1/1) ... [2022-07-12 09:57:08,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d89fc1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:57:08, skipping insertion in model container [2022-07-12 09:57:08,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:57:08" (1/1) ... [2022-07-12 09:57:08,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:57:08,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:57:08,554 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/pthread/queue_longer.i[43296,43309] [2022-07-12 09:57:08,559 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/pthread/queue_longer.i[43503,43516] [2022-07-12 09:57:08,563 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/pthread/queue_longer.i[43783,43796] [2022-07-12 09:57:08,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:57:08,576 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:57:08,612 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/pthread/queue_longer.i[43296,43309] [2022-07-12 09:57:08,615 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/pthread/queue_longer.i[43503,43516] [2022-07-12 09:57:08,617 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/pthread/queue_longer.i[43783,43796] [2022-07-12 09:57:08,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:57:08,661 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:57:08,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:57:08 WrapperNode [2022-07-12 09:57:08,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:57:08,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:57:08,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:57:08,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:57:08,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:57:08" (1/1) ... [2022-07-12 09:57:08,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:57:08" (1/1) ... [2022-07-12 09:57:08,716 INFO L137 Inliner]: procedures = 274, calls = 62, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 243 [2022-07-12 09:57:08,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:57:08,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:57:08,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:57:08,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:57:08,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:57:08" (1/1) ... [2022-07-12 09:57:08,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:57:08" (1/1) ... [2022-07-12 09:57:08,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:57:08" (1/1) ... [2022-07-12 09:57:08,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:57:08" (1/1) ... [2022-07-12 09:57:08,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:57:08" (1/1) ... [2022-07-12 09:57:08,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:57:08" (1/1) ... [2022-07-12 09:57:08,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:57:08" (1/1) ... [2022-07-12 09:57:08,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:57:08,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:57:08,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:57:08,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:57:08,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:57:08" (1/1) ... [2022-07-12 09:57:08,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:57:08,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:57:08,787 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) [2022-07-12 09:57:08,788 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 [2022-07-12 09:57:08,810 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-07-12 09:57:08,811 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-07-12 09:57:08,811 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-07-12 09:57:08,811 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-07-12 09:57:08,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 09:57:08,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 09:57:08,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 09:57:08,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 09:57:08,811 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-12 09:57:08,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:57:08,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:57:08,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:57:08,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:57:08,813 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 09:57:08,931 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:57:08,932 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:57:09,166 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:57:09,173 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:57:09,175 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 09:57:09,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:57:09 BoogieIcfgContainer [2022-07-12 09:57:09,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:57:09,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:57:09,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:57:09,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:57:09,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:57:08" (1/3) ... [2022-07-12 09:57:09,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf0f95d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:57:09, skipping insertion in model container [2022-07-12 09:57:09,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:57:08" (2/3) ... [2022-07-12 09:57:09,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf0f95d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:57:09, skipping insertion in model container [2022-07-12 09:57:09,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:57:09" (3/3) ... [2022-07-12 09:57:09,186 INFO L111 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2022-07-12 09:57:09,189 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 09:57:09,195 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:57:09,196 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-07-12 09:57:09,196 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 09:57:09,298 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-12 09:57:09,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 266 places, 274 transitions, 564 flow [2022-07-12 09:57:09,387 INFO L129 PetriNetUnfolder]: 15/272 cut-off events. [2022-07-12 09:57:09,388 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 09:57:09,395 INFO L84 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 272 events. 15/272 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 363 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 198. Up to 2 conditions per place. [2022-07-12 09:57:09,395 INFO L82 GeneralOperation]: Start removeDead. Operand has 266 places, 274 transitions, 564 flow [2022-07-12 09:57:09,399 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 262 transitions, 533 flow [2022-07-12 09:57:09,405 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:57:09,409 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@5ddd2fa7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@8935b0b [2022-07-12 09:57:09,409 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-12 09:57:09,415 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2022-07-12 09:57:09,416 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 09:57:09,416 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 09:57:09,416 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] [2022-07-12 09:57:09,417 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 09:57:09,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:57:09,420 INFO L85 PathProgramCache]: Analyzing trace with hash -266547570, now seen corresponding path program 1 times [2022-07-12 09:57:09,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:57:09,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595422571] [2022-07-12 09:57:09,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:57:09,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:57:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:57:09,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:57:09,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:57:09,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595422571] [2022-07-12 09:57:09,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595422571] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:57:09,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:57:09,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:57:09,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976296554] [2022-07-12 09:57:09,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:57:09,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 09:57:09,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:57:09,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 09:57:09,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 09:57:09,635 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 274 [2022-07-12 09:57:09,638 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 262 transitions, 533 flow. Second operand has 2 states, 2 states have (on average 261.5) internal successors, (523), 2 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:09,638 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 09:57:09,638 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 274 [2022-07-12 09:57:09,639 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 09:57:09,715 INFO L129 PetriNetUnfolder]: 10/251 cut-off events. [2022-07-12 09:57:09,715 INFO L130 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-07-12 09:57:09,719 INFO L84 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 251 events. 10/251 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 285 event pairs, 0 based on Foata normal form. 7/246 useless extension candidates. Maximal degree in co-relation 191. Up to 4 conditions per place. [2022-07-12 09:57:09,721 INFO L132 encePairwiseOnDemand]: 269/274 looper letters, 3 selfloop transitions, 0 changer transitions 0/251 dead transitions. [2022-07-12 09:57:09,721 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 251 transitions, 517 flow [2022-07-12 09:57:09,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 09:57:09,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-12 09:57:09,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 530 transitions. [2022-07-12 09:57:09,737 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9671532846715328 [2022-07-12 09:57:09,737 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 530 transitions. [2022-07-12 09:57:09,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 530 transitions. [2022-07-12 09:57:09,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 09:57:09,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 530 transitions. [2022-07-12 09:57:09,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 265.0) internal successors, (530), 2 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:09,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:09,755 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:09,756 INFO L186 Difference]: Start difference. First operand has 254 places, 262 transitions, 533 flow. Second operand 2 states and 530 transitions. [2022-07-12 09:57:09,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 251 transitions, 517 flow [2022-07-12 09:57:09,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 251 transitions, 512 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-12 09:57:09,765 INFO L242 Difference]: Finished difference. Result has 246 places, 251 transitions, 506 flow [2022-07-12 09:57:09,767 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=506, PETRI_PLACES=246, PETRI_TRANSITIONS=251} [2022-07-12 09:57:09,773 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, -8 predicate places. [2022-07-12 09:57:09,773 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 251 transitions, 506 flow [2022-07-12 09:57:09,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 261.5) internal successors, (523), 2 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:09,774 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 09:57:09,774 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] [2022-07-12 09:57:09,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:57:09,775 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 09:57:09,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:57:09,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1627698218, now seen corresponding path program 1 times [2022-07-12 09:57:09,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:57:09,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622053466] [2022-07-12 09:57:09,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:57:09,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:57:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:57:10,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:57:10,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:57:10,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622053466] [2022-07-12 09:57:10,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622053466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:57:10,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:57:10,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 09:57:10,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179105359] [2022-07-12 09:57:10,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:57:10,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 09:57:10,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:57:10,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 09:57:10,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-12 09:57:10,023 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 274 [2022-07-12 09:57:10,025 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 251 transitions, 506 flow. Second operand has 12 states, 12 states have (on average 199.75) internal successors, (2397), 12 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:10,025 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 09:57:10,025 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 274 [2022-07-12 09:57:10,025 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 09:57:10,758 INFO L129 PetriNetUnfolder]: 1003/4117 cut-off events. [2022-07-12 09:57:10,758 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-07-12 09:57:10,767 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5628 conditions, 4117 events. 1003/4117 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 33911 event pairs, 789 based on Foata normal form. 0/3832 useless extension candidates. Maximal degree in co-relation 5625. Up to 1435 conditions per place. [2022-07-12 09:57:10,781 INFO L132 encePairwiseOnDemand]: 261/274 looper letters, 52 selfloop transitions, 12 changer transitions 0/247 dead transitions. [2022-07-12 09:57:10,781 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 247 transitions, 626 flow [2022-07-12 09:57:10,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 09:57:10,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 09:57:10,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2626 transitions. [2022-07-12 09:57:10,790 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7372262773722628 [2022-07-12 09:57:10,790 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2626 transitions. [2022-07-12 09:57:10,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2626 transitions. [2022-07-12 09:57:10,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 09:57:10,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2626 transitions. [2022-07-12 09:57:10,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 202.0) internal successors, (2626), 13 states have internal predecessors, (2626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:10,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 274.0) internal successors, (3836), 14 states have internal predecessors, (3836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:10,804 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 274.0) internal successors, (3836), 14 states have internal predecessors, (3836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:10,804 INFO L186 Difference]: Start difference. First operand has 246 places, 251 transitions, 506 flow. Second operand 13 states and 2626 transitions. [2022-07-12 09:57:10,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 247 transitions, 626 flow [2022-07-12 09:57:10,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 247 transitions, 626 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 09:57:10,813 INFO L242 Difference]: Finished difference. Result has 255 places, 247 transitions, 522 flow [2022-07-12 09:57:10,813 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=522, PETRI_PLACES=255, PETRI_TRANSITIONS=247} [2022-07-12 09:57:10,814 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 1 predicate places. [2022-07-12 09:57:10,814 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 247 transitions, 522 flow [2022-07-12 09:57:10,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 199.75) internal successors, (2397), 12 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:10,816 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 09:57:10,816 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] [2022-07-12 09:57:10,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:57:10,816 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 09:57:10,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:57:10,819 INFO L85 PathProgramCache]: Analyzing trace with hash -2013468752, now seen corresponding path program 1 times [2022-07-12 09:57:10,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:57:10,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328545719] [2022-07-12 09:57:10,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:57:10,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:57:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:57:10,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:57:10,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:57:10,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328545719] [2022-07-12 09:57:10,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328545719] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:57:10,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:57:10,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 09:57:10,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010229660] [2022-07-12 09:57:10,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:57:10,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:57:10,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:57:10,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:57:10,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 09:57:10,931 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 274 [2022-07-12 09:57:10,932 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 247 transitions, 522 flow. Second operand has 4 states, 4 states have (on average 251.75) internal successors, (1007), 4 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:10,932 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 09:57:10,932 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 274 [2022-07-12 09:57:10,933 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 09:57:10,997 INFO L129 PetriNetUnfolder]: 26/432 cut-off events. [2022-07-12 09:57:10,997 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-12 09:57:10,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 432 events. 26/432 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1084 event pairs, 2 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 495. Up to 13 conditions per place. [2022-07-12 09:57:11,000 INFO L132 encePairwiseOnDemand]: 268/274 looper letters, 9 selfloop transitions, 5 changer transitions 0/247 dead transitions. [2022-07-12 09:57:11,001 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 247 transitions, 554 flow [2022-07-12 09:57:11,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 09:57:11,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 09:57:11,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1015 transitions. [2022-07-12 09:57:11,004 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.926094890510949 [2022-07-12 09:57:11,004 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1015 transitions. [2022-07-12 09:57:11,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1015 transitions. [2022-07-12 09:57:11,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 09:57:11,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1015 transitions. [2022-07-12 09:57:11,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 253.75) internal successors, (1015), 4 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:11,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 274.0) internal successors, (1370), 5 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:11,009 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 274.0) internal successors, (1370), 5 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:11,009 INFO L186 Difference]: Start difference. First operand has 255 places, 247 transitions, 522 flow. Second operand 4 states and 1015 transitions. [2022-07-12 09:57:11,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 247 transitions, 554 flow [2022-07-12 09:57:11,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 247 transitions, 531 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-07-12 09:57:11,012 INFO L242 Difference]: Finished difference. Result has 246 places, 245 transitions, 505 flow [2022-07-12 09:57:11,013 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=505, PETRI_PLACES=246, PETRI_TRANSITIONS=245} [2022-07-12 09:57:11,014 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, -8 predicate places. [2022-07-12 09:57:11,015 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 245 transitions, 505 flow [2022-07-12 09:57:11,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 251.75) internal successors, (1007), 4 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:11,015 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 09:57:11,016 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] [2022-07-12 09:57:11,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 09:57:11,016 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 09:57:11,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:57:11,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1617079602, now seen corresponding path program 1 times [2022-07-12 09:57:11,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:57:11,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158847762] [2022-07-12 09:57:11,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:57:11,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:57:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:57:11,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:57:11,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:57:11,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158847762] [2022-07-12 09:57:11,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158847762] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:57:11,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:57:11,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:57:11,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376985072] [2022-07-12 09:57:11,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:57:11,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:57:11,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:57:11,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:57:11,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:57:11,126 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 274 [2022-07-12 09:57:11,127 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 245 transitions, 505 flow. Second operand has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:11,127 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 09:57:11,127 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 274 [2022-07-12 09:57:11,127 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 09:57:11,180 INFO L129 PetriNetUnfolder]: 33/527 cut-off events. [2022-07-12 09:57:11,181 INFO L130 PetriNetUnfolder]: For 7/8 co-relation queries the response was YES. [2022-07-12 09:57:11,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 527 events. 33/527 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1268 event pairs, 2 based on Foata normal form. 0/493 useless extension candidates. Maximal degree in co-relation 582. Up to 23 conditions per place. [2022-07-12 09:57:11,183 INFO L132 encePairwiseOnDemand]: 270/274 looper letters, 10 selfloop transitions, 3 changer transitions 0/249 dead transitions. [2022-07-12 09:57:11,183 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 249 transitions, 542 flow [2022-07-12 09:57:11,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:57:11,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 09:57:11,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 779 transitions. [2022-07-12 09:57:11,185 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9476885644768857 [2022-07-12 09:57:11,185 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 779 transitions. [2022-07-12 09:57:11,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 779 transitions. [2022-07-12 09:57:11,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 09:57:11,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 779 transitions. [2022-07-12 09:57:11,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:11,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:11,191 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:11,191 INFO L186 Difference]: Start difference. First operand has 246 places, 245 transitions, 505 flow. Second operand 3 states and 779 transitions. [2022-07-12 09:57:11,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 249 transitions, 542 flow [2022-07-12 09:57:11,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 249 transitions, 532 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-12 09:57:11,195 INFO L242 Difference]: Finished difference. Result has 246 places, 246 transitions, 510 flow [2022-07-12 09:57:11,198 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=510, PETRI_PLACES=246, PETRI_TRANSITIONS=246} [2022-07-12 09:57:11,199 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, -8 predicate places. [2022-07-12 09:57:11,199 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 246 transitions, 510 flow [2022-07-12 09:57:11,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:11,200 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 09:57:11,200 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] [2022-07-12 09:57:11,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 09:57:11,200 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 09:57:11,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:57:11,200 INFO L85 PathProgramCache]: Analyzing trace with hash 771775214, now seen corresponding path program 1 times [2022-07-12 09:57:11,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:57:11,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648818694] [2022-07-12 09:57:11,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:57:11,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:57:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:57:11,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:57:11,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:57:11,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648818694] [2022-07-12 09:57:11,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648818694] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:57:11,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:57:11,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 09:57:11,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037977579] [2022-07-12 09:57:11,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:57:11,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:57:11,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:57:11,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:57:11,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 09:57:11,264 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 274 [2022-07-12 09:57:11,265 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 246 transitions, 510 flow. Second operand has 4 states, 4 states have (on average 253.75) internal successors, (1015), 4 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:11,265 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 09:57:11,265 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 274 [2022-07-12 09:57:11,266 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 09:57:11,353 INFO L129 PetriNetUnfolder]: 51/836 cut-off events. [2022-07-12 09:57:11,354 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-07-12 09:57:11,356 INFO L84 FinitePrefix]: Finished finitePrefix Result has 945 conditions, 836 events. 51/836 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3004 event pairs, 7 based on Foata normal form. 0/788 useless extension candidates. Maximal degree in co-relation 940. Up to 27 conditions per place. [2022-07-12 09:57:11,358 INFO L132 encePairwiseOnDemand]: 269/274 looper letters, 15 selfloop transitions, 5 changer transitions 0/254 dead transitions. [2022-07-12 09:57:11,358 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 254 transitions, 573 flow [2022-07-12 09:57:11,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:57:11,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 09:57:11,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1281 transitions. [2022-07-12 09:57:11,361 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.935036496350365 [2022-07-12 09:57:11,361 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1281 transitions. [2022-07-12 09:57:11,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1281 transitions. [2022-07-12 09:57:11,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 09:57:11,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1281 transitions. [2022-07-12 09:57:11,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 256.2) internal successors, (1281), 5 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:11,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 274.0) internal successors, (1644), 6 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:11,368 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 274.0) internal successors, (1644), 6 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:11,368 INFO L186 Difference]: Start difference. First operand has 246 places, 246 transitions, 510 flow. Second operand 5 states and 1281 transitions. [2022-07-12 09:57:11,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 254 transitions, 573 flow [2022-07-12 09:57:11,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 254 transitions, 570 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 09:57:11,372 INFO L242 Difference]: Finished difference. Result has 252 places, 249 transitions, 537 flow [2022-07-12 09:57:11,372 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=537, PETRI_PLACES=252, PETRI_TRANSITIONS=249} [2022-07-12 09:57:11,374 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, -2 predicate places. [2022-07-12 09:57:11,374 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 249 transitions, 537 flow [2022-07-12 09:57:11,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 253.75) internal successors, (1015), 4 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:11,374 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 09:57:11,375 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] [2022-07-12 09:57:11,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 09:57:11,375 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 09:57:11,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:57:11,376 INFO L85 PathProgramCache]: Analyzing trace with hash -703749757, now seen corresponding path program 1 times [2022-07-12 09:57:11,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:57:11,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084700643] [2022-07-12 09:57:11,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:57:11,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:57:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:57:11,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:57:11,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:57:11,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084700643] [2022-07-12 09:57:11,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084700643] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:57:11,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:57:11,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-12 09:57:11,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506254045] [2022-07-12 09:57:11,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:57:11,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-12 09:57:11,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:57:11,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-12 09:57:11,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:57:11,810 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 274 [2022-07-12 09:57:11,812 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 249 transitions, 537 flow. Second operand has 17 states, 17 states have (on average 187.41176470588235) internal successors, (3186), 17 states have internal predecessors, (3186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:11,812 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 09:57:11,813 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 274 [2022-07-12 09:57:11,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 09:57:12,984 INFO L129 PetriNetUnfolder]: 1599/6669 cut-off events. [2022-07-12 09:57:12,984 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-07-12 09:57:12,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9623 conditions, 6669 events. 1599/6669 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 58360 event pairs, 1290 based on Foata normal form. 0/6318 useless extension candidates. Maximal degree in co-relation 9616. Up to 2556 conditions per place. [2022-07-12 09:57:13,014 INFO L132 encePairwiseOnDemand]: 258/274 looper letters, 79 selfloop transitions, 20 changer transitions 0/271 dead transitions. [2022-07-12 09:57:13,015 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 271 transitions, 781 flow [2022-07-12 09:57:13,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:57:13,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-12 09:57:13,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2876 transitions. [2022-07-12 09:57:13,020 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6997566909975669 [2022-07-12 09:57:13,020 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2876 transitions. [2022-07-12 09:57:13,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2876 transitions. [2022-07-12 09:57:13,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 09:57:13,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2876 transitions. [2022-07-12 09:57:13,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 191.73333333333332) internal successors, (2876), 15 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:13,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 274.0) internal successors, (4384), 16 states have internal predecessors, (4384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:13,031 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 274.0) internal successors, (4384), 16 states have internal predecessors, (4384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:13,031 INFO L186 Difference]: Start difference. First operand has 252 places, 249 transitions, 537 flow. Second operand 15 states and 2876 transitions. [2022-07-12 09:57:13,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 271 transitions, 781 flow [2022-07-12 09:57:13,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 271 transitions, 781 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 09:57:13,035 INFO L242 Difference]: Finished difference. Result has 272 places, 262 transitions, 644 flow [2022-07-12 09:57:13,036 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=644, PETRI_PLACES=272, PETRI_TRANSITIONS=262} [2022-07-12 09:57:13,036 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 18 predicate places. [2022-07-12 09:57:13,036 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 262 transitions, 644 flow [2022-07-12 09:57:13,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 187.41176470588235) internal successors, (3186), 17 states have internal predecessors, (3186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:13,037 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 09:57:13,038 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] [2022-07-12 09:57:13,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 09:57:13,038 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 09:57:13,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:57:13,038 INFO L85 PathProgramCache]: Analyzing trace with hash -940168002, now seen corresponding path program 1 times [2022-07-12 09:57:13,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:57:13,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448580459] [2022-07-12 09:57:13,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:57:13,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:57:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:57:13,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:57:13,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:57:13,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448580459] [2022-07-12 09:57:13,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448580459] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:57:13,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:57:13,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-12 09:57:13,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868267886] [2022-07-12 09:57:13,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:57:13,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-12 09:57:13,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:57:13,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-12 09:57:13,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-07-12 09:57:13,889 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 274 [2022-07-12 09:57:13,891 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 262 transitions, 644 flow. Second operand has 27 states, 27 states have (on average 173.92592592592592) internal successors, (4696), 27 states have internal predecessors, (4696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:13,891 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 09:57:13,891 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 274 [2022-07-12 09:57:13,892 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 09:57:16,565 INFO L129 PetriNetUnfolder]: 1457/6029 cut-off events. [2022-07-12 09:57:16,566 INFO L130 PetriNetUnfolder]: For 117/120 co-relation queries the response was YES. [2022-07-12 09:57:16,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8866 conditions, 6029 events. 1457/6029 cut-off events. For 117/120 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 51340 event pairs, 1160 based on Foata normal form. 2/5754 useless extension candidates. Maximal degree in co-relation 8852. Up to 2311 conditions per place. [2022-07-12 09:57:16,593 INFO L132 encePairwiseOnDemand]: 243/274 looper letters, 88 selfloop transitions, 45 changer transitions 0/297 dead transitions. [2022-07-12 09:57:16,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 297 transitions, 1004 flow [2022-07-12 09:57:16,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-12 09:57:16,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-12 09:57:16,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4778 transitions. [2022-07-12 09:57:16,602 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6458502297918356 [2022-07-12 09:57:16,602 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4778 transitions. [2022-07-12 09:57:16,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4778 transitions. [2022-07-12 09:57:16,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 09:57:16,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4778 transitions. [2022-07-12 09:57:16,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 176.96296296296296) internal successors, (4778), 27 states have internal predecessors, (4778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:16,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 274.0) internal successors, (7672), 28 states have internal predecessors, (7672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:16,620 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 274.0) internal successors, (7672), 28 states have internal predecessors, (7672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:16,620 INFO L186 Difference]: Start difference. First operand has 272 places, 262 transitions, 644 flow. Second operand 27 states and 4778 transitions. [2022-07-12 09:57:16,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 297 transitions, 1004 flow [2022-07-12 09:57:16,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 297 transitions, 991 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-07-12 09:57:16,626 INFO L242 Difference]: Finished difference. Result has 303 places, 284 transitions, 870 flow [2022-07-12 09:57:16,626 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=870, PETRI_PLACES=303, PETRI_TRANSITIONS=284} [2022-07-12 09:57:16,627 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 49 predicate places. [2022-07-12 09:57:16,627 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 284 transitions, 870 flow [2022-07-12 09:57:16,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 173.92592592592592) internal successors, (4696), 27 states have internal predecessors, (4696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:16,628 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 09:57:16,628 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] [2022-07-12 09:57:16,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 09:57:16,629 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 09:57:16,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:57:16,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1623156073, now seen corresponding path program 1 times [2022-07-12 09:57:16,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:57:16,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502625694] [2022-07-12 09:57:16,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:57:16,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:57:16,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:57:17,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:57:17,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:57:17,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502625694] [2022-07-12 09:57:17,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502625694] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:57:17,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:57:17,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 09:57:17,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230640477] [2022-07-12 09:57:17,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:57:17,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 09:57:17,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:57:17,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 09:57:17,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-07-12 09:57:17,147 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 274 [2022-07-12 09:57:17,149 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 284 transitions, 870 flow. Second operand has 18 states, 18 states have (on average 176.83333333333334) internal successors, (3183), 18 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:17,149 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 09:57:17,149 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 274 [2022-07-12 09:57:17,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 09:57:18,596 INFO L129 PetriNetUnfolder]: 1619/6777 cut-off events. [2022-07-12 09:57:18,596 INFO L130 PetriNetUnfolder]: For 451/455 co-relation queries the response was YES. [2022-07-12 09:57:18,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10294 conditions, 6777 events. 1619/6777 cut-off events. For 451/455 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 59251 event pairs, 734 based on Foata normal form. 3/6433 useless extension candidates. Maximal degree in co-relation 10268. Up to 2470 conditions per place. [2022-07-12 09:57:18,634 INFO L132 encePairwiseOnDemand]: 253/274 looper letters, 117 selfloop transitions, 34 changer transitions 0/320 dead transitions. [2022-07-12 09:57:18,635 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 320 transitions, 1284 flow [2022-07-12 09:57:18,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 09:57:18,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 09:57:18,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2913 transitions. [2022-07-12 09:57:18,640 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6644616788321168 [2022-07-12 09:57:18,640 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2913 transitions. [2022-07-12 09:57:18,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2913 transitions. [2022-07-12 09:57:18,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 09:57:18,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2913 transitions. [2022-07-12 09:57:18,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 182.0625) internal successors, (2913), 16 states have internal predecessors, (2913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:18,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 274.0) internal successors, (4658), 17 states have internal predecessors, (4658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:18,650 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 274.0) internal successors, (4658), 17 states have internal predecessors, (4658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:18,650 INFO L186 Difference]: Start difference. First operand has 303 places, 284 transitions, 870 flow. Second operand 16 states and 2913 transitions. [2022-07-12 09:57:18,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 320 transitions, 1284 flow [2022-07-12 09:57:18,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 320 transitions, 1241 flow, removed 8 selfloop flow, removed 12 redundant places. [2022-07-12 09:57:18,658 INFO L242 Difference]: Finished difference. Result has 311 places, 294 transitions, 994 flow [2022-07-12 09:57:18,659 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=994, PETRI_PLACES=311, PETRI_TRANSITIONS=294} [2022-07-12 09:57:18,659 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 57 predicate places. [2022-07-12 09:57:18,659 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 294 transitions, 994 flow [2022-07-12 09:57:18,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 176.83333333333334) internal successors, (3183), 18 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:18,660 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 09:57:18,660 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] [2022-07-12 09:57:18,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 09:57:18,661 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 09:57:18,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:57:18,661 INFO L85 PathProgramCache]: Analyzing trace with hash -156557425, now seen corresponding path program 2 times [2022-07-12 09:57:18,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:57:18,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687854621] [2022-07-12 09:57:18,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:57:18,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:57:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:57:19,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:57:19,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:57:19,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687854621] [2022-07-12 09:57:19,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687854621] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:57:19,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:57:19,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 09:57:19,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642519329] [2022-07-12 09:57:19,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:57:19,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 09:57:19,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:57:19,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 09:57:19,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-07-12 09:57:19,140 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 274 [2022-07-12 09:57:19,142 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 294 transitions, 994 flow. Second operand has 18 states, 18 states have (on average 176.83333333333334) internal successors, (3183), 18 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:19,142 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 09:57:19,142 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 274 [2022-07-12 09:57:19,142 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 09:57:20,987 INFO L129 PetriNetUnfolder]: 1640/6855 cut-off events. [2022-07-12 09:57:20,988 INFO L130 PetriNetUnfolder]: For 708/712 co-relation queries the response was YES. [2022-07-12 09:57:21,025 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10633 conditions, 6855 events. 1640/6855 cut-off events. For 708/712 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 59968 event pairs, 735 based on Foata normal form. 3/6511 useless extension candidates. Maximal degree in co-relation 10602. Up to 2475 conditions per place. [2022-07-12 09:57:21,042 INFO L132 encePairwiseOnDemand]: 254/274 looper letters, 118 selfloop transitions, 38 changer transitions 0/325 dead transitions. [2022-07-12 09:57:21,043 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 325 transitions, 1427 flow [2022-07-12 09:57:21,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:57:21,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-12 09:57:21,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2737 transitions. [2022-07-12 09:57:21,048 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6659367396593674 [2022-07-12 09:57:21,048 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2737 transitions. [2022-07-12 09:57:21,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2737 transitions. [2022-07-12 09:57:21,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 09:57:21,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2737 transitions. [2022-07-12 09:57:21,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 182.46666666666667) internal successors, (2737), 15 states have internal predecessors, (2737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:21,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 274.0) internal successors, (4384), 16 states have internal predecessors, (4384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:21,059 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 274.0) internal successors, (4384), 16 states have internal predecessors, (4384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:21,059 INFO L186 Difference]: Start difference. First operand has 311 places, 294 transitions, 994 flow. Second operand 15 states and 2737 transitions. [2022-07-12 09:57:21,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 325 transitions, 1427 flow [2022-07-12 09:57:21,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 325 transitions, 1395 flow, removed 6 selfloop flow, removed 10 redundant places. [2022-07-12 09:57:21,068 INFO L242 Difference]: Finished difference. Result has 319 places, 300 transitions, 1140 flow [2022-07-12 09:57:21,069 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=968, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1140, PETRI_PLACES=319, PETRI_TRANSITIONS=300} [2022-07-12 09:57:21,069 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 65 predicate places. [2022-07-12 09:57:21,070 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 300 transitions, 1140 flow [2022-07-12 09:57:21,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 176.83333333333334) internal successors, (3183), 18 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:21,071 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 09:57:21,071 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] [2022-07-12 09:57:21,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 09:57:21,071 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 09:57:21,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:57:21,072 INFO L85 PathProgramCache]: Analyzing trace with hash 655539223, now seen corresponding path program 3 times [2022-07-12 09:57:21,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:57:21,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562663989] [2022-07-12 09:57:21,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:57:21,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:57:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:57:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:57:21,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:57:21,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562663989] [2022-07-12 09:57:21,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562663989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:57:21,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:57:21,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 09:57:21,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619602845] [2022-07-12 09:57:21,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:57:21,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 09:57:21,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:57:21,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 09:57:21,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-07-12 09:57:21,521 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 274 [2022-07-12 09:57:21,522 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 300 transitions, 1140 flow. Second operand has 18 states, 18 states have (on average 176.83333333333334) internal successors, (3183), 18 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:21,522 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 09:57:21,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 274 [2022-07-12 09:57:21,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 09:57:22,898 INFO L129 PetriNetUnfolder]: 1625/6840 cut-off events. [2022-07-12 09:57:22,898 INFO L130 PetriNetUnfolder]: For 1143/1147 co-relation queries the response was YES. [2022-07-12 09:57:22,944 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10698 conditions, 6840 events. 1625/6840 cut-off events. For 1143/1147 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 60100 event pairs, 741 based on Foata normal form. 6/6497 useless extension candidates. Maximal degree in co-relation 10664. Up to 2414 conditions per place. [2022-07-12 09:57:22,963 INFO L132 encePairwiseOnDemand]: 257/274 looper letters, 101 selfloop transitions, 36 changer transitions 0/306 dead transitions. [2022-07-12 09:57:22,963 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 306 transitions, 1422 flow [2022-07-12 09:57:22,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:57:22,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-12 09:57:22,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2535 transitions. [2022-07-12 09:57:22,966 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6608446298227321 [2022-07-12 09:57:22,966 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2535 transitions. [2022-07-12 09:57:22,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2535 transitions. [2022-07-12 09:57:22,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 09:57:22,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2535 transitions. [2022-07-12 09:57:22,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 181.07142857142858) internal successors, (2535), 14 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:22,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 274.0) internal successors, (4110), 15 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:22,973 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 274.0) internal successors, (4110), 15 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:22,974 INFO L186 Difference]: Start difference. First operand has 319 places, 300 transitions, 1140 flow. Second operand 14 states and 2535 transitions. [2022-07-12 09:57:22,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 306 transitions, 1422 flow [2022-07-12 09:57:22,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 306 transitions, 1386 flow, removed 4 selfloop flow, removed 11 redundant places. [2022-07-12 09:57:22,982 INFO L242 Difference]: Finished difference. Result has 319 places, 296 transitions, 1154 flow [2022-07-12 09:57:22,983 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1082, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1154, PETRI_PLACES=319, PETRI_TRANSITIONS=296} [2022-07-12 09:57:22,983 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 65 predicate places. [2022-07-12 09:57:22,983 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 296 transitions, 1154 flow [2022-07-12 09:57:22,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 176.83333333333334) internal successors, (3183), 18 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:22,984 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 09:57:22,984 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] [2022-07-12 09:57:22,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 09:57:22,985 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 09:57:22,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:57:22,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1000254974, now seen corresponding path program 1 times [2022-07-12 09:57:22,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:57:22,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151495957] [2022-07-12 09:57:22,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:57:22,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:57:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:57:24,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:57:24,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:57:24,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151495957] [2022-07-12 09:57:24,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151495957] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:57:24,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:57:24,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-07-12 09:57:24,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347227305] [2022-07-12 09:57:24,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:57:24,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-12 09:57:24,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:57:24,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-12 09:57:24,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2022-07-12 09:57:24,082 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 274 [2022-07-12 09:57:24,084 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 296 transitions, 1154 flow. Second operand has 29 states, 29 states have (on average 163.13793103448276) internal successors, (4731), 29 states have internal predecessors, (4731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:24,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 09:57:24,084 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 274 [2022-07-12 09:57:24,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 09:57:26,644 INFO L129 PetriNetUnfolder]: 847/3524 cut-off events. [2022-07-12 09:57:26,644 INFO L130 PetriNetUnfolder]: For 1183/1186 co-relation queries the response was YES. [2022-07-12 09:57:26,660 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5962 conditions, 3524 events. 847/3524 cut-off events. For 1183/1186 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 24833 event pairs, 336 based on Foata normal form. 3/3355 useless extension candidates. Maximal degree in co-relation 5929. Up to 1081 conditions per place. [2022-07-12 09:57:26,668 INFO L132 encePairwiseOnDemand]: 245/274 looper letters, 121 selfloop transitions, 52 changer transitions 0/320 dead transitions. [2022-07-12 09:57:26,668 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 320 transitions, 1567 flow [2022-07-12 09:57:26,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-12 09:57:26,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-12 09:57:26,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4489 transitions. [2022-07-12 09:57:26,672 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6067856177345229 [2022-07-12 09:57:26,672 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4489 transitions. [2022-07-12 09:57:26,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4489 transitions. [2022-07-12 09:57:26,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 09:57:26,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4489 transitions. [2022-07-12 09:57:26,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 166.25925925925927) internal successors, (4489), 27 states have internal predecessors, (4489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:26,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 274.0) internal successors, (7672), 28 states have internal predecessors, (7672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:26,684 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 274.0) internal successors, (7672), 28 states have internal predecessors, (7672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:26,684 INFO L186 Difference]: Start difference. First operand has 319 places, 296 transitions, 1154 flow. Second operand 27 states and 4489 transitions. [2022-07-12 09:57:26,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 320 transitions, 1567 flow [2022-07-12 09:57:26,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 320 transitions, 1475 flow, removed 1 selfloop flow, removed 21 redundant places. [2022-07-12 09:57:26,692 INFO L242 Difference]: Finished difference. Result has 318 places, 287 transitions, 1154 flow [2022-07-12 09:57:26,692 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1154, PETRI_PLACES=318, PETRI_TRANSITIONS=287} [2022-07-12 09:57:26,693 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 64 predicate places. [2022-07-12 09:57:26,693 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 287 transitions, 1154 flow [2022-07-12 09:57:26,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 163.13793103448276) internal successors, (4731), 29 states have internal predecessors, (4731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:26,694 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 09:57:26,694 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] [2022-07-12 09:57:26,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 09:57:26,694 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 09:57:26,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:57:26,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1509204245, now seen corresponding path program 1 times [2022-07-12 09:57:26,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:57:26,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167611384] [2022-07-12 09:57:26,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:57:26,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:57:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:57:26,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:57:26,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:57:26,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167611384] [2022-07-12 09:57:26,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167611384] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:57:26,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:57:26,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:57:26,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600588018] [2022-07-12 09:57:26,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:57:26,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:57:26,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:57:26,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:57:26,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:57:26,735 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 274 [2022-07-12 09:57:26,736 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 287 transitions, 1154 flow. Second operand has 3 states, 3 states have (on average 252.33333333333334) internal successors, (757), 3 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:26,736 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 09:57:26,736 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 274 [2022-07-12 09:57:26,736 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 09:57:26,821 INFO L129 PetriNetUnfolder]: 62/911 cut-off events. [2022-07-12 09:57:26,821 INFO L130 PetriNetUnfolder]: For 544/545 co-relation queries the response was YES. [2022-07-12 09:57:26,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1485 conditions, 911 events. 62/911 cut-off events. For 544/545 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3746 event pairs, 7 based on Foata normal form. 18/884 useless extension candidates. Maximal degree in co-relation 1455. Up to 39 conditions per place. [2022-07-12 09:57:26,827 INFO L132 encePairwiseOnDemand]: 268/274 looper letters, 12 selfloop transitions, 6 changer transitions 0/289 dead transitions. [2022-07-12 09:57:26,827 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 289 transitions, 1197 flow [2022-07-12 09:57:26,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:57:26,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 09:57:26,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 765 transitions. [2022-07-12 09:57:26,828 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9306569343065694 [2022-07-12 09:57:26,828 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 765 transitions. [2022-07-12 09:57:26,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 765 transitions. [2022-07-12 09:57:26,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 09:57:26,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 765 transitions. [2022-07-12 09:57:26,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:26,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:26,831 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:26,831 INFO L186 Difference]: Start difference. First operand has 318 places, 287 transitions, 1154 flow. Second operand 3 states and 765 transitions. [2022-07-12 09:57:26,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 289 transitions, 1197 flow [2022-07-12 09:57:26,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 289 transitions, 1103 flow, removed 2 selfloop flow, removed 23 redundant places. [2022-07-12 09:57:26,838 INFO L242 Difference]: Finished difference. Result has 297 places, 287 transitions, 1072 flow [2022-07-12 09:57:26,839 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1072, PETRI_PLACES=297, PETRI_TRANSITIONS=287} [2022-07-12 09:57:26,840 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 43 predicate places. [2022-07-12 09:57:26,840 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 287 transitions, 1072 flow [2022-07-12 09:57:26,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.33333333333334) internal successors, (757), 3 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:26,840 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 09:57:26,840 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] [2022-07-12 09:57:26,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 09:57:26,841 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 09:57:26,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:57:26,841 INFO L85 PathProgramCache]: Analyzing trace with hash -849021323, now seen corresponding path program 1 times [2022-07-12 09:57:26,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:57:26,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674908643] [2022-07-12 09:57:26,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:57:26,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:57:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:57:27,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:57:27,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:57:27,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674908643] [2022-07-12 09:57:27,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674908643] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:57:27,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:57:27,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-07-12 09:57:27,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087733745] [2022-07-12 09:57:27,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:57:27,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-12 09:57:27,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:57:27,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-12 09:57:27,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2022-07-12 09:57:27,563 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 274 [2022-07-12 09:57:27,565 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 287 transitions, 1072 flow. Second operand has 29 states, 29 states have (on average 167.75862068965517) internal successors, (4865), 29 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:27,565 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 09:57:27,565 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 274 [2022-07-12 09:57:27,565 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 09:57:29,253 INFO L129 PetriNetUnfolder]: 393/1832 cut-off events. [2022-07-12 09:57:29,253 INFO L130 PetriNetUnfolder]: For 1081/1085 co-relation queries the response was YES. [2022-07-12 09:57:29,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3796 conditions, 1832 events. 393/1832 cut-off events. For 1081/1085 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 10155 event pairs, 43 based on Foata normal form. 0/1767 useless extension candidates. Maximal degree in co-relation 3766. Up to 359 conditions per place. [2022-07-12 09:57:29,263 INFO L132 encePairwiseOnDemand]: 243/274 looper letters, 141 selfloop transitions, 56 changer transitions 0/342 dead transitions. [2022-07-12 09:57:29,263 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 342 transitions, 1639 flow [2022-07-12 09:57:29,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 09:57:29,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-12 09:57:29,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4780 transitions. [2022-07-12 09:57:29,267 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6230448383733055 [2022-07-12 09:57:29,267 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4780 transitions. [2022-07-12 09:57:29,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4780 transitions. [2022-07-12 09:57:29,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 09:57:29,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4780 transitions. [2022-07-12 09:57:29,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 170.71428571428572) internal successors, (4780), 28 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:29,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 274.0) internal successors, (7946), 29 states have internal predecessors, (7946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:29,278 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 274.0) internal successors, (7946), 29 states have internal predecessors, (7946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:29,278 INFO L186 Difference]: Start difference. First operand has 297 places, 287 transitions, 1072 flow. Second operand 28 states and 4780 transitions. [2022-07-12 09:57:29,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 342 transitions, 1639 flow [2022-07-12 09:57:29,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 342 transitions, 1633 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 09:57:29,287 INFO L242 Difference]: Finished difference. Result has 328 places, 294 transitions, 1223 flow [2022-07-12 09:57:29,287 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1223, PETRI_PLACES=328, PETRI_TRANSITIONS=294} [2022-07-12 09:57:29,288 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 74 predicate places. [2022-07-12 09:57:29,288 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 294 transitions, 1223 flow [2022-07-12 09:57:29,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 167.75862068965517) internal successors, (4865), 29 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:29,289 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 09:57:29,289 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] [2022-07-12 09:57:29,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 09:57:29,289 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 09:57:29,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:57:29,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1556864042, now seen corresponding path program 1 times [2022-07-12 09:57:29,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:57:29,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633335734] [2022-07-12 09:57:29,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:57:29,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:57:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:57:31,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:57:31,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:57:31,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633335734] [2022-07-12 09:57:31,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633335734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:57:31,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:57:31,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-07-12 09:57:31,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844955208] [2022-07-12 09:57:31,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:57:31,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-12 09:57:31,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:57:31,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-12 09:57:31,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=925, Unknown=0, NotChecked=0, Total=1056 [2022-07-12 09:57:31,029 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 274 [2022-07-12 09:57:31,031 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 294 transitions, 1223 flow. Second operand has 33 states, 33 states have (on average 155.75757575757575) internal successors, (5140), 33 states have internal predecessors, (5140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:31,031 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 09:57:31,032 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 274 [2022-07-12 09:57:31,032 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 09:57:34,661 INFO L129 PetriNetUnfolder]: 539/2379 cut-off events. [2022-07-12 09:57:34,661 INFO L130 PetriNetUnfolder]: For 1658/1662 co-relation queries the response was YES. [2022-07-12 09:57:34,672 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5116 conditions, 2379 events. 539/2379 cut-off events. For 1658/1662 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 14419 event pairs, 59 based on Foata normal form. 0/2306 useless extension candidates. Maximal degree in co-relation 5080. Up to 378 conditions per place. [2022-07-12 09:57:34,677 INFO L132 encePairwiseOnDemand]: 234/274 looper letters, 184 selfloop transitions, 66 changer transitions 0/386 dead transitions. [2022-07-12 09:57:34,677 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 386 transitions, 2006 flow [2022-07-12 09:57:34,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 09:57:34,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-12 09:57:34,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5564 transitions. [2022-07-12 09:57:34,684 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5801876955161627 [2022-07-12 09:57:34,684 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5564 transitions. [2022-07-12 09:57:34,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5564 transitions. [2022-07-12 09:57:34,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 09:57:34,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5564 transitions. [2022-07-12 09:57:34,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 158.97142857142856) internal successors, (5564), 35 states have internal predecessors, (5564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:34,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 274.0) internal successors, (9864), 36 states have internal predecessors, (9864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:34,702 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 274.0) internal successors, (9864), 36 states have internal predecessors, (9864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:34,702 INFO L186 Difference]: Start difference. First operand has 328 places, 294 transitions, 1223 flow. Second operand 35 states and 5564 transitions. [2022-07-12 09:57:34,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 386 transitions, 2006 flow [2022-07-12 09:57:34,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 386 transitions, 1910 flow, removed 0 selfloop flow, removed 21 redundant places. [2022-07-12 09:57:34,714 INFO L242 Difference]: Finished difference. Result has 351 places, 309 transitions, 1373 flow [2022-07-12 09:57:34,715 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1127, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1373, PETRI_PLACES=351, PETRI_TRANSITIONS=309} [2022-07-12 09:57:34,715 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 97 predicate places. [2022-07-12 09:57:34,715 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 309 transitions, 1373 flow [2022-07-12 09:57:34,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 155.75757575757575) internal successors, (5140), 33 states have internal predecessors, (5140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:34,716 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 09:57:34,716 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] [2022-07-12 09:57:34,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 09:57:34,717 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 09:57:34,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:57:34,717 INFO L85 PathProgramCache]: Analyzing trace with hash -797621177, now seen corresponding path program 1 times [2022-07-12 09:57:34,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:57:34,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979292306] [2022-07-12 09:57:34,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:57:34,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:57:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:57:38,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:57:38,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:57:38,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979292306] [2022-07-12 09:57:38,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979292306] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:57:38,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:57:38,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-07-12 09:57:38,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564412097] [2022-07-12 09:57:38,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:57:38,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-07-12 09:57:38,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:57:38,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-07-12 09:57:38,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=2087, Unknown=0, NotChecked=0, Total=2256 [2022-07-12 09:57:38,242 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 274 [2022-07-12 09:57:38,244 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 309 transitions, 1373 flow. Second operand has 48 states, 48 states have (on average 133.3125) internal successors, (6399), 48 states have internal predecessors, (6399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:38,245 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 09:57:38,245 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 274 [2022-07-12 09:57:38,245 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 09:57:55,056 INFO L129 PetriNetUnfolder]: 5960/14638 cut-off events. [2022-07-12 09:57:55,057 INFO L130 PetriNetUnfolder]: For 7350/7351 co-relation queries the response was YES. [2022-07-12 09:57:55,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32000 conditions, 14638 events. 5960/14638 cut-off events. For 7350/7351 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 115671 event pairs, 1067 based on Foata normal form. 0/13670 useless extension candidates. Maximal degree in co-relation 31954. Up to 4688 conditions per place. [2022-07-12 09:57:55,128 INFO L132 encePairwiseOnDemand]: 215/274 looper letters, 566 selfloop transitions, 192 changer transitions 65/943 dead transitions. [2022-07-12 09:57:55,128 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 943 transitions, 4854 flow [2022-07-12 09:57:55,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-07-12 09:57:55,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2022-07-12 09:57:55,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 11917 transitions. [2022-07-12 09:57:55,137 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5116788321167883 [2022-07-12 09:57:55,137 INFO L72 ComplementDD]: Start complementDD. Operand 85 states and 11917 transitions. [2022-07-12 09:57:55,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 85 states and 11917 transitions. [2022-07-12 09:57:55,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 09:57:55,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 85 states and 11917 transitions. [2022-07-12 09:57:55,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 86 states, 85 states have (on average 140.2) internal successors, (11917), 85 states have internal predecessors, (11917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:55,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 86 states, 86 states have (on average 274.0) internal successors, (23564), 86 states have internal predecessors, (23564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:55,168 INFO L81 ComplementDD]: Finished complementDD. Result has 86 states, 86 states have (on average 274.0) internal successors, (23564), 86 states have internal predecessors, (23564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:55,169 INFO L186 Difference]: Start difference. First operand has 351 places, 309 transitions, 1373 flow. Second operand 85 states and 11917 transitions. [2022-07-12 09:57:55,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 943 transitions, 4854 flow [2022-07-12 09:57:55,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 943 transitions, 4705 flow, removed 15 selfloop flow, removed 22 redundant places. [2022-07-12 09:57:55,215 INFO L242 Difference]: Finished difference. Result has 473 places, 456 transitions, 2733 flow [2022-07-12 09:57:55,215 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=85, PETRI_FLOW=2733, PETRI_PLACES=473, PETRI_TRANSITIONS=456} [2022-07-12 09:57:55,216 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 219 predicate places. [2022-07-12 09:57:55,216 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 456 transitions, 2733 flow [2022-07-12 09:57:55,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 133.3125) internal successors, (6399), 48 states have internal predecessors, (6399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:55,217 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 09:57:55,217 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] [2022-07-12 09:57:55,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 09:57:55,218 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 09:57:55,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:57:55,218 INFO L85 PathProgramCache]: Analyzing trace with hash 188543869, now seen corresponding path program 2 times [2022-07-12 09:57:55,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:57:55,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654224318] [2022-07-12 09:57:55,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:57:55,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:57:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:57:57,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:57:57,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:57:57,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654224318] [2022-07-12 09:57:57,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654224318] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:57:57,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:57:57,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-07-12 09:57:57,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695500089] [2022-07-12 09:57:57,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:57:57,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-07-12 09:57:57,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:57:57,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-07-12 09:57:57,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2074, Unknown=0, NotChecked=0, Total=2256 [2022-07-12 09:57:57,603 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 274 [2022-07-12 09:57:57,605 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 456 transitions, 2733 flow. Second operand has 48 states, 48 states have (on average 130.3125) internal successors, (6255), 48 states have internal predecessors, (6255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:57:57,605 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 09:57:57,605 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 274 [2022-07-12 09:57:57,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 09:58:11,365 INFO L129 PetriNetUnfolder]: 7618/18071 cut-off events. [2022-07-12 09:58:11,365 INFO L130 PetriNetUnfolder]: For 172988/173072 co-relation queries the response was YES. [2022-07-12 09:58:11,516 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65753 conditions, 18071 events. 7618/18071 cut-off events. For 172988/173072 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 146302 event pairs, 2761 based on Foata normal form. 188/17897 useless extension candidates. Maximal degree in co-relation 65647. Up to 10335 conditions per place. [2022-07-12 09:58:11,557 INFO L132 encePairwiseOnDemand]: 218/274 looper letters, 556 selfloop transitions, 129 changer transitions 38/846 dead transitions. [2022-07-12 09:58:11,557 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 846 transitions, 6874 flow [2022-07-12 09:58:11,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-07-12 09:58:11,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2022-07-12 09:58:11,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 9241 transitions. [2022-07-12 09:58:11,564 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.49597466723915845 [2022-07-12 09:58:11,564 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 9241 transitions. [2022-07-12 09:58:11,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 9241 transitions. [2022-07-12 09:58:11,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 09:58:11,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 9241 transitions. [2022-07-12 09:58:11,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 135.89705882352942) internal successors, (9241), 68 states have internal predecessors, (9241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:58:11,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 274.0) internal successors, (18906), 69 states have internal predecessors, (18906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:58:11,687 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 274.0) internal successors, (18906), 69 states have internal predecessors, (18906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:58:11,688 INFO L186 Difference]: Start difference. First operand has 473 places, 456 transitions, 2733 flow. Second operand 68 states and 9241 transitions. [2022-07-12 09:58:11,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 846 transitions, 6874 flow [2022-07-12 09:58:11,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 846 transitions, 6785 flow, removed 21 selfloop flow, removed 14 redundant places. [2022-07-12 09:58:11,950 INFO L242 Difference]: Finished difference. Result has 562 places, 566 transitions, 4706 flow [2022-07-12 09:58:11,951 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=2654, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=4706, PETRI_PLACES=562, PETRI_TRANSITIONS=566} [2022-07-12 09:58:11,951 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 308 predicate places. [2022-07-12 09:58:11,951 INFO L495 AbstractCegarLoop]: Abstraction has has 562 places, 566 transitions, 4706 flow [2022-07-12 09:58:11,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 130.3125) internal successors, (6255), 48 states have internal predecessors, (6255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:58:11,952 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 09:58:11,952 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] [2022-07-12 09:58:11,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 09:58:11,953 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 09:58:11,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:58:11,953 INFO L85 PathProgramCache]: Analyzing trace with hash 2136658691, now seen corresponding path program 3 times [2022-07-12 09:58:11,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:58:11,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034036000] [2022-07-12 09:58:11,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:58:11,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:58:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat