./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-match-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-match-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 016929a4a7ae1865ccc9d17762b9a3f4b350d2f1f075a0491feba933e4e45fac --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:04:19,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:04:19,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:04:19,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:04:19,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:04:19,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:04:19,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:04:19,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:04:19,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:04:19,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:04:19,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:04:19,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:04:19,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:04:19,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:04:19,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:04:19,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:04:19,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:04:19,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:04:19,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:04:19,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:04:19,362 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:04:19,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:04:19,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:04:19,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:04:19,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:04:19,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:04:19,372 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:04:19,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:04:19,375 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:04:19,375 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:04:19,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:04:19,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:04:19,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:04:19,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:04:19,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:04:19,380 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:04:19,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:04:19,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:04:19,381 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:04:19,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:04:19,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:04:19,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:04:19,385 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:04:19,420 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:04:19,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:04:19,421 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:04:19,422 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:04:19,422 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:04:19,422 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:04:19,424 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:04:19,424 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:04:19,424 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:04:19,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:04:19,425 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:04:19,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:04:19,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:04:19,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:04:19,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:04:19,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:04:19,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:04:19,427 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:04:19,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:04:19,427 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:04:19,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:04:19,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:04:19,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:04:19,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:04:19,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:04:19,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:04:19,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:04:19,429 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:04:19,430 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:04:19,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:04:19,430 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:04:19,430 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:04:19,431 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:04:19,431 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 016929a4a7ae1865ccc9d17762b9a3f4b350d2f1f075a0491feba933e4e45fac [2022-07-13 22:04:19,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:04:19,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:04:19,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:04:19,697 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:04:19,698 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:04:19,699 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-match-symm.wvr.c [2022-07-13 22:04:19,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f6f1e901/4d6f6a9a93fe4f96b21c4293d1af6117/FLAG0cce762f3 [2022-07-13 22:04:20,153 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:04:20,155 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-match-symm.wvr.c [2022-07-13 22:04:20,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f6f1e901/4d6f6a9a93fe4f96b21c4293d1af6117/FLAG0cce762f3 [2022-07-13 22:04:20,552 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f6f1e901/4d6f6a9a93fe4f96b21c4293d1af6117 [2022-07-13 22:04:20,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:04:20,555 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:04:20,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:04:20,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:04:20,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:04:20,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:04:20" (1/1) ... [2022-07-13 22:04:20,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60be410c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:20, skipping insertion in model container [2022-07-13 22:04:20,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:04:20" (1/1) ... [2022-07-13 22:04:20,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:04:20,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:04:20,742 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-match-symm.wvr.c[2584,2597] [2022-07-13 22:04:20,746 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:04:20,752 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:04:20,769 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-match-symm.wvr.c[2584,2597] [2022-07-13 22:04:20,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:04:20,782 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:04:20,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:20 WrapperNode [2022-07-13 22:04:20,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:04:20,784 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:04:20,784 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:04:20,784 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:04:20,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:20" (1/1) ... [2022-07-13 22:04:20,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:20" (1/1) ... [2022-07-13 22:04:20,815 INFO L137 Inliner]: procedures = 22, calls = 27, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 180 [2022-07-13 22:04:20,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:04:20,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:04:20,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:04:20,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:04:20,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:20" (1/1) ... [2022-07-13 22:04:20,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:20" (1/1) ... [2022-07-13 22:04:20,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:20" (1/1) ... [2022-07-13 22:04:20,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:20" (1/1) ... [2022-07-13 22:04:20,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:20" (1/1) ... [2022-07-13 22:04:20,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:20" (1/1) ... [2022-07-13 22:04:20,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:20" (1/1) ... [2022-07-13 22:04:20,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:04:20,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:04:20,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:04:20,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:04:20,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:20" (1/1) ... [2022-07-13 22:04:20,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:04:20,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:04:20,869 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) [2022-07-13 22:04:20,871 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 [2022-07-13 22:04:20,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:04:20,912 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:04:20,912 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:04:20,912 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:04:20,913 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:04:20,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:04:20,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:04:20,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:04:20,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:04:20,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:04:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:04:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:04:20,927 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:04:21,022 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:04:21,024 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:04:21,321 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:04:21,331 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:04:21,332 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 22:04:21,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:04:21 BoogieIcfgContainer [2022-07-13 22:04:21,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:04:21,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:04:21,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:04:21,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:04:21,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:04:20" (1/3) ... [2022-07-13 22:04:21,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a84bbcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:04:21, skipping insertion in model container [2022-07-13 22:04:21,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:20" (2/3) ... [2022-07-13 22:04:21,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a84bbcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:04:21, skipping insertion in model container [2022-07-13 22:04:21,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:04:21" (3/3) ... [2022-07-13 22:04:21,341 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-match-symm.wvr.c [2022-07-13 22:04:21,345 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:04:21,353 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:04:21,353 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:04:21,353 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:04:21,438 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-13 22:04:21,481 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 240 places, 252 transitions, 520 flow [2022-07-13 22:04:21,602 INFO L129 PetriNetUnfolder]: 19/250 cut-off events. [2022-07-13 22:04:21,606 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 22:04:21,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 250 events. 19/250 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 275 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 169. Up to 2 conditions per place. [2022-07-13 22:04:21,614 INFO L82 GeneralOperation]: Start removeDead. Operand has 240 places, 252 transitions, 520 flow [2022-07-13 22:04:21,623 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 229 places, 241 transitions, 494 flow [2022-07-13 22:04:21,641 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:04:21,647 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@1ceae37b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@50faf76f [2022-07-13 22:04:21,648 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-13 22:04:21,704 INFO L129 PetriNetUnfolder]: 19/240 cut-off events. [2022-07-13 22:04:21,704 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 22:04:21,704 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:21,705 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] [2022-07-13 22:04:21,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:21,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:21,711 INFO L85 PathProgramCache]: Analyzing trace with hash -511755063, now seen corresponding path program 1 times [2022-07-13 22:04:21,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:21,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868670224] [2022-07-13 22:04:21,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:21,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:22,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:22,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:22,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868670224] [2022-07-13 22:04:22,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868670224] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:22,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:22,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:22,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338050934] [2022-07-13 22:04:22,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:22,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:22,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:22,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:22,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:22,354 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 252 [2022-07-13 22:04:22,359 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 241 transitions, 494 flow. Second operand has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,359 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:22,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 252 [2022-07-13 22:04:22,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:22,526 INFO L129 PetriNetUnfolder]: 48/614 cut-off events. [2022-07-13 22:04:22,527 INFO L130 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2022-07-13 22:04:22,531 INFO L84 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 614 events. 48/614 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2804 event pairs, 15 based on Foata normal form. 44/596 useless extension candidates. Maximal degree in co-relation 531. Up to 49 conditions per place. [2022-07-13 22:04:22,534 INFO L132 encePairwiseOnDemand]: 235/252 looper letters, 21 selfloop transitions, 2 changer transitions 3/237 dead transitions. [2022-07-13 22:04:22,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 237 transitions, 541 flow [2022-07-13 22:04:22,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:22,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:22,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 721 transitions. [2022-07-13 22:04:22,553 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9537037037037037 [2022-07-13 22:04:22,554 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 721 transitions. [2022-07-13 22:04:22,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 721 transitions. [2022-07-13 22:04:22,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:22,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 721 transitions. [2022-07-13 22:04:22,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,571 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,573 INFO L186 Difference]: Start difference. First operand has 229 places, 241 transitions, 494 flow. Second operand 3 states and 721 transitions. [2022-07-13 22:04:22,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 237 transitions, 541 flow [2022-07-13 22:04:22,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 237 transitions, 527 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-13 22:04:22,583 INFO L242 Difference]: Finished difference. Result has 229 places, 229 transitions, 482 flow [2022-07-13 22:04:22,585 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=482, PETRI_PLACES=229, PETRI_TRANSITIONS=229} [2022-07-13 22:04:22,588 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 0 predicate places. [2022-07-13 22:04:22,589 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 229 transitions, 482 flow [2022-07-13 22:04:22,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,590 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:22,590 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] [2022-07-13 22:04:22,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:04:22,591 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:22,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:22,593 INFO L85 PathProgramCache]: Analyzing trace with hash 803898885, now seen corresponding path program 2 times [2022-07-13 22:04:22,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:22,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135795817] [2022-07-13 22:04:22,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:22,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:22,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:22,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:22,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135795817] [2022-07-13 22:04:22,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135795817] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:22,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:22,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:22,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880527586] [2022-07-13 22:04:22,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:22,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:22,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:22,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:22,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:22,742 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 252 [2022-07-13 22:04:22,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 229 transitions, 482 flow. Second operand has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,745 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:22,745 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 252 [2022-07-13 22:04:22,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:22,877 INFO L129 PetriNetUnfolder]: 45/636 cut-off events. [2022-07-13 22:04:22,882 INFO L130 PetriNetUnfolder]: For 57/74 co-relation queries the response was YES. [2022-07-13 22:04:22,885 INFO L84 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 636 events. 45/636 cut-off events. For 57/74 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2802 event pairs, 14 based on Foata normal form. 6/602 useless extension candidates. Maximal degree in co-relation 579. Up to 51 conditions per place. [2022-07-13 22:04:22,887 INFO L132 encePairwiseOnDemand]: 246/252 looper letters, 23 selfloop transitions, 2 changer transitions 0/236 dead transitions. [2022-07-13 22:04:22,887 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 236 transitions, 557 flow [2022-07-13 22:04:22,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:22,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:22,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 699 transitions. [2022-07-13 22:04:22,890 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9246031746031746 [2022-07-13 22:04:22,890 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 699 transitions. [2022-07-13 22:04:22,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 699 transitions. [2022-07-13 22:04:22,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:22,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 699 transitions. [2022-07-13 22:04:22,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,895 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,895 INFO L186 Difference]: Start difference. First operand has 229 places, 229 transitions, 482 flow. Second operand 3 states and 699 transitions. [2022-07-13 22:04:22,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 236 transitions, 557 flow [2022-07-13 22:04:22,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 236 transitions, 555 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:04:22,906 INFO L242 Difference]: Finished difference. Result has 229 places, 231 transitions, 508 flow [2022-07-13 22:04:22,906 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=229, PETRI_TRANSITIONS=231} [2022-07-13 22:04:22,908 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 0 predicate places. [2022-07-13 22:04:22,908 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 231 transitions, 508 flow [2022-07-13 22:04:22,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,909 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:22,909 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] [2022-07-13 22:04:22,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:04:22,910 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:22,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:22,911 INFO L85 PathProgramCache]: Analyzing trace with hash -823811011, now seen corresponding path program 1 times [2022-07-13 22:04:22,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:22,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474819360] [2022-07-13 22:04:22,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:22,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:23,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:23,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:23,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474819360] [2022-07-13 22:04:23,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474819360] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:23,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:23,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:04:23,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230973627] [2022-07-13 22:04:23,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:23,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:04:23,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:23,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:04:23,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:04:23,176 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-13 22:04:23,178 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 231 transitions, 508 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:23,178 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:23,178 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-13 22:04:23,178 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:23,577 INFO L129 PetriNetUnfolder]: 137/955 cut-off events. [2022-07-13 22:04:23,577 INFO L130 PetriNetUnfolder]: For 47/55 co-relation queries the response was YES. [2022-07-13 22:04:23,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1381 conditions, 955 events. 137/955 cut-off events. For 47/55 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5273 event pairs, 73 based on Foata normal form. 1/886 useless extension candidates. Maximal degree in co-relation 996. Up to 229 conditions per place. [2022-07-13 22:04:23,584 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 61 selfloop transitions, 5 changer transitions 29/297 dead transitions. [2022-07-13 22:04:23,584 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 297 transitions, 841 flow [2022-07-13 22:04:23,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:04:23,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:04:23,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3840 transitions. [2022-07-13 22:04:23,593 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8465608465608465 [2022-07-13 22:04:23,593 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3840 transitions. [2022-07-13 22:04:23,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3840 transitions. [2022-07-13 22:04:23,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:23,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3840 transitions. [2022-07-13 22:04:23,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 213.33333333333334) internal successors, (3840), 18 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:23,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 252.0) internal successors, (4788), 19 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:23,614 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 252.0) internal successors, (4788), 19 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:23,614 INFO L186 Difference]: Start difference. First operand has 229 places, 231 transitions, 508 flow. Second operand 18 states and 3840 transitions. [2022-07-13 22:04:23,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 297 transitions, 841 flow [2022-07-13 22:04:23,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 297 transitions, 839 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:04:23,621 INFO L242 Difference]: Finished difference. Result has 261 places, 235 transitions, 577 flow [2022-07-13 22:04:23,621 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=577, PETRI_PLACES=261, PETRI_TRANSITIONS=235} [2022-07-13 22:04:23,623 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 32 predicate places. [2022-07-13 22:04:23,623 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 235 transitions, 577 flow [2022-07-13 22:04:23,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:23,625 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:23,625 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] [2022-07-13 22:04:23,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 22:04:23,626 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:23,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:23,626 INFO L85 PathProgramCache]: Analyzing trace with hash 106633647, now seen corresponding path program 2 times [2022-07-13 22:04:23,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:23,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987171708] [2022-07-13 22:04:23,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:23,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:23,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:23,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:23,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987171708] [2022-07-13 22:04:23,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987171708] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:23,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:23,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:04:23,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300721206] [2022-07-13 22:04:23,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:23,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:04:23,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:23,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:04:23,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:04:23,811 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-13 22:04:23,812 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 235 transitions, 577 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:23,812 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:23,813 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-13 22:04:23,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:24,186 INFO L129 PetriNetUnfolder]: 141/1094 cut-off events. [2022-07-13 22:04:24,186 INFO L130 PetriNetUnfolder]: For 696/729 co-relation queries the response was YES. [2022-07-13 22:04:24,191 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2111 conditions, 1094 events. 141/1094 cut-off events. For 696/729 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6470 event pairs, 78 based on Foata normal form. 1/1021 useless extension candidates. Maximal degree in co-relation 2015. Up to 248 conditions per place. [2022-07-13 22:04:24,196 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 76 selfloop transitions, 3 changer transitions 25/306 dead transitions. [2022-07-13 22:04:24,196 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 306 transitions, 1135 flow [2022-07-13 22:04:24,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:04:24,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:04:24,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3625 transitions. [2022-07-13 22:04:24,204 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.846171802054155 [2022-07-13 22:04:24,204 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3625 transitions. [2022-07-13 22:04:24,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3625 transitions. [2022-07-13 22:04:24,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:24,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3625 transitions. [2022-07-13 22:04:24,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 213.23529411764707) internal successors, (3625), 17 states have internal predecessors, (3625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 252.0) internal successors, (4536), 18 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,223 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 252.0) internal successors, (4536), 18 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,225 INFO L186 Difference]: Start difference. First operand has 261 places, 235 transitions, 577 flow. Second operand 17 states and 3625 transitions. [2022-07-13 22:04:24,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 306 transitions, 1135 flow [2022-07-13 22:04:24,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 306 transitions, 1081 flow, removed 25 selfloop flow, removed 8 redundant places. [2022-07-13 22:04:24,239 INFO L242 Difference]: Finished difference. Result has 273 places, 237 transitions, 625 flow [2022-07-13 22:04:24,240 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=625, PETRI_PLACES=273, PETRI_TRANSITIONS=237} [2022-07-13 22:04:24,241 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 44 predicate places. [2022-07-13 22:04:24,242 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 237 transitions, 625 flow [2022-07-13 22:04:24,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,244 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:24,244 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] [2022-07-13 22:04:24,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 22:04:24,244 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:24,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:24,245 INFO L85 PathProgramCache]: Analyzing trace with hash -468348399, now seen corresponding path program 3 times [2022-07-13 22:04:24,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:24,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932590631] [2022-07-13 22:04:24,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:24,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:24,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:24,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:24,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932590631] [2022-07-13 22:04:24,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932590631] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:24,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:24,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:04:24,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172042296] [2022-07-13 22:04:24,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:24,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:04:24,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:24,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:04:24,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:04:24,448 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-13 22:04:24,449 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 237 transitions, 625 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,450 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:24,450 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-13 22:04:24,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:24,878 INFO L129 PetriNetUnfolder]: 145/1099 cut-off events. [2022-07-13 22:04:24,879 INFO L130 PetriNetUnfolder]: For 1611/1642 co-relation queries the response was YES. [2022-07-13 22:04:24,884 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2418 conditions, 1099 events. 145/1099 cut-off events. For 1611/1642 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 6513 event pairs, 84 based on Foata normal form. 1/1023 useless extension candidates. Maximal degree in co-relation 2314. Up to 287 conditions per place. [2022-07-13 22:04:24,888 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 46 selfloop transitions, 12 changer transitions 20/280 dead transitions. [2022-07-13 22:04:24,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 280 transitions, 1115 flow [2022-07-13 22:04:24,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:04:24,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:04:24,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3401 transitions. [2022-07-13 22:04:24,896 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8435019841269841 [2022-07-13 22:04:24,896 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3401 transitions. [2022-07-13 22:04:24,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3401 transitions. [2022-07-13 22:04:24,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:24,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3401 transitions. [2022-07-13 22:04:24,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 212.5625) internal successors, (3401), 16 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,913 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,913 INFO L186 Difference]: Start difference. First operand has 273 places, 237 transitions, 625 flow. Second operand 16 states and 3401 transitions. [2022-07-13 22:04:24,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 280 transitions, 1115 flow [2022-07-13 22:04:24,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 280 transitions, 1074 flow, removed 19 selfloop flow, removed 9 redundant places. [2022-07-13 22:04:24,927 INFO L242 Difference]: Finished difference. Result has 275 places, 247 transitions, 764 flow [2022-07-13 22:04:24,928 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=764, PETRI_PLACES=275, PETRI_TRANSITIONS=247} [2022-07-13 22:04:24,929 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 46 predicate places. [2022-07-13 22:04:24,929 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 247 transitions, 764 flow [2022-07-13 22:04:24,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,930 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:24,930 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] [2022-07-13 22:04:24,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 22:04:24,931 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:24,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:24,931 INFO L85 PathProgramCache]: Analyzing trace with hash -678703279, now seen corresponding path program 4 times [2022-07-13 22:04:24,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:24,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036858742] [2022-07-13 22:04:24,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:24,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:24,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:25,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:25,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:25,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036858742] [2022-07-13 22:04:25,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036858742] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:25,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:25,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:04:25,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895156349] [2022-07-13 22:04:25,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:25,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:04:25,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:25,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:04:25,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:04:25,074 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-13 22:04:25,076 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 247 transitions, 764 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,076 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:25,076 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-13 22:04:25,076 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:25,421 INFO L129 PetriNetUnfolder]: 151/1128 cut-off events. [2022-07-13 22:04:25,421 INFO L130 PetriNetUnfolder]: For 2074/2133 co-relation queries the response was YES. [2022-07-13 22:04:25,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2647 conditions, 1128 events. 151/1128 cut-off events. For 2074/2133 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6788 event pairs, 89 based on Foata normal form. 1/1056 useless extension candidates. Maximal degree in co-relation 2543. Up to 311 conditions per place. [2022-07-13 22:04:25,430 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 49 selfloop transitions, 19 changer transitions 20/290 dead transitions. [2022-07-13 22:04:25,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 290 transitions, 1311 flow [2022-07-13 22:04:25,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 22:04:25,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-13 22:04:25,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2983 transitions. [2022-07-13 22:04:25,436 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8455215419501134 [2022-07-13 22:04:25,437 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2983 transitions. [2022-07-13 22:04:25,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2983 transitions. [2022-07-13 22:04:25,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:25,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2983 transitions. [2022-07-13 22:04:25,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 213.07142857142858) internal successors, (2983), 14 states have internal predecessors, (2983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,450 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,450 INFO L186 Difference]: Start difference. First operand has 275 places, 247 transitions, 764 flow. Second operand 14 states and 2983 transitions. [2022-07-13 22:04:25,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 290 transitions, 1311 flow [2022-07-13 22:04:25,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 290 transitions, 1275 flow, removed 18 selfloop flow, removed 3 redundant places. [2022-07-13 22:04:25,469 INFO L242 Difference]: Finished difference. Result has 288 places, 257 transitions, 932 flow [2022-07-13 22:04:25,469 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=932, PETRI_PLACES=288, PETRI_TRANSITIONS=257} [2022-07-13 22:04:25,470 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 59 predicate places. [2022-07-13 22:04:25,470 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 257 transitions, 932 flow [2022-07-13 22:04:25,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,472 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:25,472 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] [2022-07-13 22:04:25,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 22:04:25,472 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:25,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:25,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1634795281, now seen corresponding path program 5 times [2022-07-13 22:04:25,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:25,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443127647] [2022-07-13 22:04:25,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:25,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:25,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:25,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:25,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443127647] [2022-07-13 22:04:25,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443127647] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:25,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:25,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:04:25,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951910905] [2022-07-13 22:04:25,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:25,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:04:25,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:25,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:04:25,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:04:25,610 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-13 22:04:25,612 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 257 transitions, 932 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,612 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:25,613 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-13 22:04:25,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:25,951 INFO L129 PetriNetUnfolder]: 148/1127 cut-off events. [2022-07-13 22:04:25,952 INFO L130 PetriNetUnfolder]: For 2892/2949 co-relation queries the response was YES. [2022-07-13 22:04:25,958 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2870 conditions, 1127 events. 148/1127 cut-off events. For 2892/2949 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6844 event pairs, 82 based on Foata normal form. 2/1053 useless extension candidates. Maximal degree in co-relation 2757. Up to 298 conditions per place. [2022-07-13 22:04:25,962 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 56 selfloop transitions, 16 changer transitions 24/298 dead transitions. [2022-07-13 22:04:25,962 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 298 transitions, 1570 flow [2022-07-13 22:04:25,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 22:04:25,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-13 22:04:25,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3192 transitions. [2022-07-13 22:04:25,969 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2022-07-13 22:04:25,969 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3192 transitions. [2022-07-13 22:04:25,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3192 transitions. [2022-07-13 22:04:25,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:25,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3192 transitions. [2022-07-13 22:04:25,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 212.8) internal successors, (3192), 15 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,982 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,982 INFO L186 Difference]: Start difference. First operand has 288 places, 257 transitions, 932 flow. Second operand 15 states and 3192 transitions. [2022-07-13 22:04:25,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 298 transitions, 1570 flow [2022-07-13 22:04:26,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 298 transitions, 1475 flow, removed 38 selfloop flow, removed 6 redundant places. [2022-07-13 22:04:26,005 INFO L242 Difference]: Finished difference. Result has 301 places, 262 transitions, 1016 flow [2022-07-13 22:04:26,005 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1016, PETRI_PLACES=301, PETRI_TRANSITIONS=262} [2022-07-13 22:04:26,006 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 72 predicate places. [2022-07-13 22:04:26,006 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 262 transitions, 1016 flow [2022-07-13 22:04:26,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:26,007 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:26,007 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] [2022-07-13 22:04:26,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 22:04:26,008 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:26,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:26,008 INFO L85 PathProgramCache]: Analyzing trace with hash -67705479, now seen corresponding path program 6 times [2022-07-13 22:04:26,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:26,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61167450] [2022-07-13 22:04:26,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:26,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:26,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:26,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:26,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61167450] [2022-07-13 22:04:26,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61167450] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:26,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:26,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:04:26,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530518976] [2022-07-13 22:04:26,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:26,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:04:26,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:26,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:04:26,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:04:26,147 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-13 22:04:26,149 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 262 transitions, 1016 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:26,149 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:26,149 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-13 22:04:26,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:26,458 INFO L129 PetriNetUnfolder]: 142/1116 cut-off events. [2022-07-13 22:04:26,459 INFO L130 PetriNetUnfolder]: For 3368/3439 co-relation queries the response was YES. [2022-07-13 22:04:26,466 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2860 conditions, 1116 events. 142/1116 cut-off events. For 3368/3439 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6771 event pairs, 84 based on Foata normal form. 7/1046 useless extension candidates. Maximal degree in co-relation 2741. Up to 292 conditions per place. [2022-07-13 22:04:26,470 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 51 selfloop transitions, 11 changer transitions 24/288 dead transitions. [2022-07-13 22:04:26,471 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 288 transitions, 1438 flow [2022-07-13 22:04:26,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 22:04:26,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-13 22:04:26,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2769 transitions. [2022-07-13 22:04:26,477 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8452380952380952 [2022-07-13 22:04:26,477 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2769 transitions. [2022-07-13 22:04:26,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2769 transitions. [2022-07-13 22:04:26,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:26,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2769 transitions. [2022-07-13 22:04:26,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 213.0) internal successors, (2769), 13 states have internal predecessors, (2769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:26,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 252.0) internal successors, (3528), 14 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:26,488 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 252.0) internal successors, (3528), 14 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:26,488 INFO L186 Difference]: Start difference. First operand has 301 places, 262 transitions, 1016 flow. Second operand 13 states and 2769 transitions. [2022-07-13 22:04:26,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 288 transitions, 1438 flow [2022-07-13 22:04:26,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 288 transitions, 1339 flow, removed 44 selfloop flow, removed 9 redundant places. [2022-07-13 22:04:26,510 INFO L242 Difference]: Finished difference. Result has 300 places, 254 transitions, 886 flow [2022-07-13 22:04:26,511 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=886, PETRI_PLACES=300, PETRI_TRANSITIONS=254} [2022-07-13 22:04:26,511 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 71 predicate places. [2022-07-13 22:04:26,512 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 254 transitions, 886 flow [2022-07-13 22:04:26,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:26,512 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:26,513 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] [2022-07-13 22:04:26,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 22:04:26,513 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:26,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:26,514 INFO L85 PathProgramCache]: Analyzing trace with hash 32274999, now seen corresponding path program 7 times [2022-07-13 22:04:26,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:26,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964971008] [2022-07-13 22:04:26,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:26,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:26,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:26,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:26,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964971008] [2022-07-13 22:04:26,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964971008] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:26,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:26,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:04:26,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149472192] [2022-07-13 22:04:26,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:26,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:04:26,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:26,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:04:26,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:04:26,629 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-13 22:04:26,630 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 254 transitions, 886 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:26,630 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:26,630 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-13 22:04:26,631 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:26,974 INFO L129 PetriNetUnfolder]: 140/1101 cut-off events. [2022-07-13 22:04:26,975 INFO L130 PetriNetUnfolder]: For 2817/2873 co-relation queries the response was YES. [2022-07-13 22:04:26,980 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2744 conditions, 1101 events. 140/1101 cut-off events. For 2817/2873 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6616 event pairs, 81 based on Foata normal form. 3/1029 useless extension candidates. Maximal degree in co-relation 2628. Up to 286 conditions per place. [2022-07-13 22:04:26,984 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 48 selfloop transitions, 14 changer transitions 23/287 dead transitions. [2022-07-13 22:04:26,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 287 transitions, 1399 flow [2022-07-13 22:04:26,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 22:04:26,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-13 22:04:26,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3191 transitions. [2022-07-13 22:04:26,989 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8441798941798941 [2022-07-13 22:04:26,989 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3191 transitions. [2022-07-13 22:04:26,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3191 transitions. [2022-07-13 22:04:26,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:26,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3191 transitions. [2022-07-13 22:04:26,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 212.73333333333332) internal successors, (3191), 15 states have internal predecessors, (3191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,001 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,001 INFO L186 Difference]: Start difference. First operand has 300 places, 254 transitions, 886 flow. Second operand 15 states and 3191 transitions. [2022-07-13 22:04:27,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 287 transitions, 1399 flow [2022-07-13 22:04:27,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 287 transitions, 1311 flow, removed 27 selfloop flow, removed 11 redundant places. [2022-07-13 22:04:27,018 INFO L242 Difference]: Finished difference. Result has 300 places, 258 transitions, 967 flow [2022-07-13 22:04:27,019 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=967, PETRI_PLACES=300, PETRI_TRANSITIONS=258} [2022-07-13 22:04:27,019 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 71 predicate places. [2022-07-13 22:04:27,019 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 258 transitions, 967 flow [2022-07-13 22:04:27,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,020 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:27,020 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] [2022-07-13 22:04:27,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 22:04:27,021 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:27,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:27,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1584975147, now seen corresponding path program 8 times [2022-07-13 22:04:27,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:27,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692083223] [2022-07-13 22:04:27,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:27,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:27,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:27,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:27,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692083223] [2022-07-13 22:04:27,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692083223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:27,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:27,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:04:27,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349441425] [2022-07-13 22:04:27,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:27,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:04:27,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:27,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:04:27,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:04:27,153 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-13 22:04:27,155 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 258 transitions, 967 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,155 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:27,155 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-13 22:04:27,155 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:27,483 INFO L129 PetriNetUnfolder]: 133/1068 cut-off events. [2022-07-13 22:04:27,483 INFO L130 PetriNetUnfolder]: For 2580/2637 co-relation queries the response was YES. [2022-07-13 22:04:27,490 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2618 conditions, 1068 events. 133/1068 cut-off events. For 2580/2637 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6270 event pairs, 81 based on Foata normal form. 3/996 useless extension candidates. Maximal degree in co-relation 2500. Up to 283 conditions per place. [2022-07-13 22:04:27,494 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 45 selfloop transitions, 4 changer transitions 26/277 dead transitions. [2022-07-13 22:04:27,494 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 277 transitions, 1266 flow [2022-07-13 22:04:27,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 22:04:27,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-13 22:04:27,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2975 transitions. [2022-07-13 22:04:27,499 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8432539682539683 [2022-07-13 22:04:27,499 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2975 transitions. [2022-07-13 22:04:27,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2975 transitions. [2022-07-13 22:04:27,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:27,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2975 transitions. [2022-07-13 22:04:27,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 212.5) internal successors, (2975), 14 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,517 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,517 INFO L186 Difference]: Start difference. First operand has 300 places, 258 transitions, 967 flow. Second operand 14 states and 2975 transitions. [2022-07-13 22:04:27,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 277 transitions, 1266 flow [2022-07-13 22:04:27,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 277 transitions, 1191 flow, removed 28 selfloop flow, removed 8 redundant places. [2022-07-13 22:04:27,536 INFO L242 Difference]: Finished difference. Result has 303 places, 247 transitions, 782 flow [2022-07-13 22:04:27,537 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=782, PETRI_PLACES=303, PETRI_TRANSITIONS=247} [2022-07-13 22:04:27,538 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 74 predicate places. [2022-07-13 22:04:27,538 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 247 transitions, 782 flow [2022-07-13 22:04:27,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,539 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:27,539 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] [2022-07-13 22:04:27,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 22:04:27,540 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:27,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:27,540 INFO L85 PathProgramCache]: Analyzing trace with hash 4897569, now seen corresponding path program 9 times [2022-07-13 22:04:27,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:27,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180289173] [2022-07-13 22:04:27,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:27,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:27,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:27,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:27,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180289173] [2022-07-13 22:04:27,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180289173] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:27,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:27,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:04:27,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671581419] [2022-07-13 22:04:27,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:27,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:04:27,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:27,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:04:27,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:04:27,684 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-13 22:04:27,686 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 247 transitions, 782 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,686 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:27,686 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-13 22:04:27,686 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:28,048 INFO L129 PetriNetUnfolder]: 132/1083 cut-off events. [2022-07-13 22:04:28,049 INFO L130 PetriNetUnfolder]: For 2334/2373 co-relation queries the response was YES. [2022-07-13 22:04:28,054 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2536 conditions, 1083 events. 132/1083 cut-off events. For 2334/2373 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 6474 event pairs, 84 based on Foata normal form. 2/1012 useless extension candidates. Maximal degree in co-relation 2494. Up to 293 conditions per place. [2022-07-13 22:04:28,058 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 44 selfloop transitions, 10 changer transitions 26/282 dead transitions. [2022-07-13 22:04:28,058 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 282 transitions, 1250 flow [2022-07-13 22:04:28,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:04:28,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:04:28,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3401 transitions. [2022-07-13 22:04:28,064 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8435019841269841 [2022-07-13 22:04:28,064 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3401 transitions. [2022-07-13 22:04:28,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3401 transitions. [2022-07-13 22:04:28,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:28,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3401 transitions. [2022-07-13 22:04:28,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 212.5625) internal successors, (3401), 16 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:28,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:28,075 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:28,075 INFO L186 Difference]: Start difference. First operand has 303 places, 247 transitions, 782 flow. Second operand 16 states and 3401 transitions. [2022-07-13 22:04:28,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 282 transitions, 1250 flow [2022-07-13 22:04:28,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 282 transitions, 1136 flow, removed 26 selfloop flow, removed 17 redundant places. [2022-07-13 22:04:28,092 INFO L242 Difference]: Finished difference. Result has 293 places, 248 transitions, 803 flow [2022-07-13 22:04:28,092 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=803, PETRI_PLACES=293, PETRI_TRANSITIONS=248} [2022-07-13 22:04:28,093 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 64 predicate places. [2022-07-13 22:04:28,093 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 248 transitions, 803 flow [2022-07-13 22:04:28,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:28,094 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:28,094 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] [2022-07-13 22:04:28,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 22:04:28,095 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:28,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:28,095 INFO L85 PathProgramCache]: Analyzing trace with hash 601347723, now seen corresponding path program 10 times [2022-07-13 22:04:28,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:28,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948080312] [2022-07-13 22:04:28,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:28,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:28,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:28,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:28,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948080312] [2022-07-13 22:04:28,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948080312] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:28,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:28,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:04:28,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471969830] [2022-07-13 22:04:28,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:28,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:04:28,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:28,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:04:28,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:04:28,214 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-13 22:04:28,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 248 transitions, 803 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:28,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:28,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-13 22:04:28,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:28,497 INFO L129 PetriNetUnfolder]: 127/994 cut-off events. [2022-07-13 22:04:28,497 INFO L130 PetriNetUnfolder]: For 1863/1899 co-relation queries the response was YES. [2022-07-13 22:04:28,504 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2278 conditions, 994 events. 127/994 cut-off events. For 1863/1899 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5557 event pairs, 84 based on Foata normal form. 2/923 useless extension candidates. Maximal degree in co-relation 2237. Up to 276 conditions per place. [2022-07-13 22:04:28,507 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 39 selfloop transitions, 2 changer transitions 28/269 dead transitions. [2022-07-13 22:04:28,507 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 269 transitions, 1061 flow [2022-07-13 22:04:28,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 22:04:28,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-13 22:04:28,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2976 transitions. [2022-07-13 22:04:28,513 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8435374149659864 [2022-07-13 22:04:28,514 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2976 transitions. [2022-07-13 22:04:28,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2976 transitions. [2022-07-13 22:04:28,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:28,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2976 transitions. [2022-07-13 22:04:28,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 212.57142857142858) internal successors, (2976), 14 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:28,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:28,523 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:28,523 INFO L186 Difference]: Start difference. First operand has 293 places, 248 transitions, 803 flow. Second operand 14 states and 2976 transitions. [2022-07-13 22:04:28,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 269 transitions, 1061 flow [2022-07-13 22:04:28,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 269 transitions, 997 flow, removed 24 selfloop flow, removed 12 redundant places. [2022-07-13 22:04:28,538 INFO L242 Difference]: Finished difference. Result has 289 places, 235 transitions, 640 flow [2022-07-13 22:04:28,539 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=640, PETRI_PLACES=289, PETRI_TRANSITIONS=235} [2022-07-13 22:04:28,541 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 60 predicate places. [2022-07-13 22:04:28,541 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 235 transitions, 640 flow [2022-07-13 22:04:28,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:28,542 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:28,542 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] [2022-07-13 22:04:28,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 22:04:28,543 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:28,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:28,543 INFO L85 PathProgramCache]: Analyzing trace with hash 2015398089, now seen corresponding path program 1 times [2022-07-13 22:04:28,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:28,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907234058] [2022-07-13 22:04:28,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:28,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:28,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:28,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907234058] [2022-07-13 22:04:28,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907234058] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:28,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:28,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:04:28,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012448028] [2022-07-13 22:04:28,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:28,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:04:28,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:28,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:04:28,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:04:28,680 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-13 22:04:28,682 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 235 transitions, 640 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:28,682 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:28,682 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-13 22:04:28,682 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:28,958 INFO L129 PetriNetUnfolder]: 158/1047 cut-off events. [2022-07-13 22:04:28,958 INFO L130 PetriNetUnfolder]: For 1870/1889 co-relation queries the response was YES. [2022-07-13 22:04:28,964 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2375 conditions, 1047 events. 158/1047 cut-off events. For 1870/1889 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5878 event pairs, 101 based on Foata normal form. 2/969 useless extension candidates. Maximal degree in co-relation 2339. Up to 307 conditions per place. [2022-07-13 22:04:28,968 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 43 selfloop transitions, 12 changer transitions 15/271 dead transitions. [2022-07-13 22:04:28,968 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 271 transitions, 1013 flow [2022-07-13 22:04:28,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 22:04:28,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-13 22:04:28,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2978 transitions. [2022-07-13 22:04:28,972 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8441043083900227 [2022-07-13 22:04:28,973 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2978 transitions. [2022-07-13 22:04:28,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2978 transitions. [2022-07-13 22:04:28,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:28,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2978 transitions. [2022-07-13 22:04:28,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 212.71428571428572) internal successors, (2978), 14 states have internal predecessors, (2978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:28,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:28,982 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:28,982 INFO L186 Difference]: Start difference. First operand has 289 places, 235 transitions, 640 flow. Second operand 14 states and 2978 transitions. [2022-07-13 22:04:28,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 271 transitions, 1013 flow [2022-07-13 22:04:28,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 271 transitions, 967 flow, removed 17 selfloop flow, removed 18 redundant places. [2022-07-13 22:04:28,994 INFO L242 Difference]: Finished difference. Result has 274 places, 247 transitions, 769 flow [2022-07-13 22:04:28,995 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=769, PETRI_PLACES=274, PETRI_TRANSITIONS=247} [2022-07-13 22:04:28,995 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 45 predicate places. [2022-07-13 22:04:28,995 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 247 transitions, 769 flow [2022-07-13 22:04:28,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:28,996 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:28,996 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] [2022-07-13 22:04:28,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 22:04:28,997 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:28,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:28,997 INFO L85 PathProgramCache]: Analyzing trace with hash -319056827, now seen corresponding path program 2 times [2022-07-13 22:04:28,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:28,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193490145] [2022-07-13 22:04:28,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:28,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:29,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:29,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:29,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193490145] [2022-07-13 22:04:29,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193490145] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:29,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:29,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:04:29,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655486200] [2022-07-13 22:04:29,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:29,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:04:29,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:29,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:04:29,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:04:29,114 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-13 22:04:29,116 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 247 transitions, 769 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:29,116 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:29,116 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-13 22:04:29,116 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:29,419 INFO L129 PetriNetUnfolder]: 163/1080 cut-off events. [2022-07-13 22:04:29,419 INFO L130 PetriNetUnfolder]: For 2183/2210 co-relation queries the response was YES. [2022-07-13 22:04:29,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2686 conditions, 1080 events. 163/1080 cut-off events. For 2183/2210 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6490 event pairs, 101 based on Foata normal form. 4/1007 useless extension candidates. Maximal degree in co-relation 2656. Up to 284 conditions per place. [2022-07-13 22:04:29,428 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 74 selfloop transitions, 7 changer transitions 24/306 dead transitions. [2022-07-13 22:04:29,428 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 306 transitions, 1347 flow [2022-07-13 22:04:29,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:04:29,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:04:29,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3625 transitions. [2022-07-13 22:04:29,433 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.846171802054155 [2022-07-13 22:04:29,433 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3625 transitions. [2022-07-13 22:04:29,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3625 transitions. [2022-07-13 22:04:29,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:29,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3625 transitions. [2022-07-13 22:04:29,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 213.23529411764707) internal successors, (3625), 17 states have internal predecessors, (3625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:29,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 252.0) internal successors, (4536), 18 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:29,444 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 252.0) internal successors, (4536), 18 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:29,445 INFO L186 Difference]: Start difference. First operand has 274 places, 247 transitions, 769 flow. Second operand 17 states and 3625 transitions. [2022-07-13 22:04:29,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 306 transitions, 1347 flow [2022-07-13 22:04:29,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 306 transitions, 1179 flow, removed 84 selfloop flow, removed 4 redundant places. [2022-07-13 22:04:29,461 INFO L242 Difference]: Finished difference. Result has 293 places, 248 transitions, 746 flow [2022-07-13 22:04:29,462 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=746, PETRI_PLACES=293, PETRI_TRANSITIONS=248} [2022-07-13 22:04:29,462 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 64 predicate places. [2022-07-13 22:04:29,463 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 248 transitions, 746 flow [2022-07-13 22:04:29,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:29,463 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:29,464 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] [2022-07-13 22:04:29,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 22:04:29,464 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:29,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:29,464 INFO L85 PathProgramCache]: Analyzing trace with hash 132623727, now seen corresponding path program 3 times [2022-07-13 22:04:29,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:29,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250817015] [2022-07-13 22:04:29,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:29,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:29,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:29,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:29,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250817015] [2022-07-13 22:04:29,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250817015] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:29,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:29,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:04:29,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925111973] [2022-07-13 22:04:29,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:29,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:04:29,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:29,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:04:29,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:04:29,570 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-13 22:04:29,571 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 248 transitions, 746 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:29,572 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:29,572 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-13 22:04:29,572 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:29,907 INFO L129 PetriNetUnfolder]: 171/1196 cut-off events. [2022-07-13 22:04:29,907 INFO L130 PetriNetUnfolder]: For 2890/2924 co-relation queries the response was YES. [2022-07-13 22:04:29,914 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3053 conditions, 1196 events. 171/1196 cut-off events. For 2890/2924 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7323 event pairs, 105 based on Foata normal form. 3/1118 useless extension candidates. Maximal degree in co-relation 3012. Up to 279 conditions per place. [2022-07-13 22:04:29,920 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 87 selfloop transitions, 12 changer transitions 24/324 dead transitions. [2022-07-13 22:04:29,920 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 324 transitions, 1518 flow [2022-07-13 22:04:29,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:04:29,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:04:29,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3835 transitions. [2022-07-13 22:04:29,925 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8454585537918872 [2022-07-13 22:04:29,925 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3835 transitions. [2022-07-13 22:04:29,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3835 transitions. [2022-07-13 22:04:29,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:29,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3835 transitions. [2022-07-13 22:04:29,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 213.05555555555554) internal successors, (3835), 18 states have internal predecessors, (3835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:29,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 252.0) internal successors, (4788), 19 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:29,937 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 252.0) internal successors, (4788), 19 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:29,938 INFO L186 Difference]: Start difference. First operand has 293 places, 248 transitions, 746 flow. Second operand 18 states and 3835 transitions. [2022-07-13 22:04:29,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 324 transitions, 1518 flow [2022-07-13 22:04:29,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 324 transitions, 1444 flow, removed 34 selfloop flow, removed 12 redundant places. [2022-07-13 22:04:29,954 INFO L242 Difference]: Finished difference. Result has 302 places, 253 transitions, 855 flow [2022-07-13 22:04:29,955 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=855, PETRI_PLACES=302, PETRI_TRANSITIONS=253} [2022-07-13 22:04:29,956 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 73 predicate places. [2022-07-13 22:04:29,956 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 253 transitions, 855 flow [2022-07-13 22:04:29,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:29,957 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:29,957 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] [2022-07-13 22:04:29,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 22:04:29,958 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:29,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:29,958 INFO L85 PathProgramCache]: Analyzing trace with hash -714033523, now seen corresponding path program 4 times [2022-07-13 22:04:29,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:29,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281998146] [2022-07-13 22:04:29,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:29,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:30,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:30,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:30,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281998146] [2022-07-13 22:04:30,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281998146] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:30,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:30,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:04:30,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002954197] [2022-07-13 22:04:30,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:30,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:04:30,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:30,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:04:30,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:04:30,076 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-13 22:04:30,078 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 253 transitions, 855 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:30,078 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:30,078 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-13 22:04:30,078 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:30,441 INFO L129 PetriNetUnfolder]: 169/1217 cut-off events. [2022-07-13 22:04:30,442 INFO L130 PetriNetUnfolder]: For 3704/3743 co-relation queries the response was YES. [2022-07-13 22:04:30,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3359 conditions, 1217 events. 169/1217 cut-off events. For 3704/3743 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7653 event pairs, 124 based on Foata normal form. 4/1133 useless extension candidates. Maximal degree in co-relation 3313. Up to 363 conditions per place. [2022-07-13 22:04:30,457 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 54 selfloop transitions, 10 changer transitions 20/285 dead transitions. [2022-07-13 22:04:30,457 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 285 transitions, 1305 flow [2022-07-13 22:04:30,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:04:30,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:04:30,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3398 transitions. [2022-07-13 22:04:30,462 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8427579365079365 [2022-07-13 22:04:30,462 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3398 transitions. [2022-07-13 22:04:30,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3398 transitions. [2022-07-13 22:04:30,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:30,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3398 transitions. [2022-07-13 22:04:30,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 212.375) internal successors, (3398), 16 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:30,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:30,477 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:30,477 INFO L186 Difference]: Start difference. First operand has 302 places, 253 transitions, 855 flow. Second operand 16 states and 3398 transitions. [2022-07-13 22:04:30,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 285 transitions, 1305 flow [2022-07-13 22:04:30,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 285 transitions, 1243 flow, removed 30 selfloop flow, removed 9 redundant places. [2022-07-13 22:04:30,498 INFO L242 Difference]: Finished difference. Result has 308 places, 255 transitions, 898 flow [2022-07-13 22:04:30,500 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=898, PETRI_PLACES=308, PETRI_TRANSITIONS=255} [2022-07-13 22:04:30,500 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 79 predicate places. [2022-07-13 22:04:30,502 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 255 transitions, 898 flow [2022-07-13 22:04:30,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:30,502 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:30,503 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] [2022-07-13 22:04:30,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 22:04:30,504 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:30,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:30,505 INFO L85 PathProgramCache]: Analyzing trace with hash 885409187, now seen corresponding path program 5 times [2022-07-13 22:04:30,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:30,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76387309] [2022-07-13 22:04:30,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:30,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:30,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:30,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:30,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:30,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76387309] [2022-07-13 22:04:30,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76387309] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:30,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:30,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:04:30,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037730338] [2022-07-13 22:04:30,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:30,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:04:30,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:30,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:04:30,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:04:30,618 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-13 22:04:30,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 255 transitions, 898 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:30,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:30,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-13 22:04:30,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:30,938 INFO L129 PetriNetUnfolder]: 167/1207 cut-off events. [2022-07-13 22:04:30,939 INFO L130 PetriNetUnfolder]: For 3332/3379 co-relation queries the response was YES. [2022-07-13 22:04:30,947 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3318 conditions, 1207 events. 167/1207 cut-off events. For 3332/3379 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7505 event pairs, 110 based on Foata normal form. 3/1128 useless extension candidates. Maximal degree in co-relation 3269. Up to 329 conditions per place. [2022-07-13 22:04:30,951 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 59 selfloop transitions, 12 changer transitions 20/292 dead transitions. [2022-07-13 22:04:30,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 292 transitions, 1461 flow [2022-07-13 22:04:30,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 22:04:30,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-13 22:04:30,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3192 transitions. [2022-07-13 22:04:30,956 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2022-07-13 22:04:30,956 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3192 transitions. [2022-07-13 22:04:30,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3192 transitions. [2022-07-13 22:04:30,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:30,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3192 transitions. [2022-07-13 22:04:30,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 212.8) internal successors, (3192), 15 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:30,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:30,966 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:30,966 INFO L186 Difference]: Start difference. First operand has 308 places, 255 transitions, 898 flow. Second operand 15 states and 3192 transitions. [2022-07-13 22:04:30,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 292 transitions, 1461 flow [2022-07-13 22:04:30,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 292 transitions, 1377 flow, removed 32 selfloop flow, removed 10 redundant places. [2022-07-13 22:04:30,984 INFO L242 Difference]: Finished difference. Result has 314 places, 261 transitions, 1005 flow [2022-07-13 22:04:30,985 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1005, PETRI_PLACES=314, PETRI_TRANSITIONS=261} [2022-07-13 22:04:30,985 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 85 predicate places. [2022-07-13 22:04:30,985 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 261 transitions, 1005 flow [2022-07-13 22:04:30,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:30,986 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:30,986 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] [2022-07-13 22:04:30,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 22:04:30,987 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:30,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:30,987 INFO L85 PathProgramCache]: Analyzing trace with hash -387112815, now seen corresponding path program 6 times [2022-07-13 22:04:30,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:30,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192492867] [2022-07-13 22:04:30,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:30,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:31,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:31,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:31,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192492867] [2022-07-13 22:04:31,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192492867] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:31,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:31,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:04:31,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195303914] [2022-07-13 22:04:31,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:31,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:04:31,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:31,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:04:31,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:04:31,105 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-13 22:04:31,106 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 261 transitions, 1005 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:31,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:31,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-13 22:04:31,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:31,400 INFO L129 PetriNetUnfolder]: 156/1172 cut-off events. [2022-07-13 22:04:31,400 INFO L130 PetriNetUnfolder]: For 3440/3481 co-relation queries the response was YES. [2022-07-13 22:04:31,409 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3267 conditions, 1172 events. 156/1172 cut-off events. For 3440/3481 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7186 event pairs, 122 based on Foata normal form. 4/1088 useless extension candidates. Maximal degree in co-relation 3214. Up to 363 conditions per place. [2022-07-13 22:04:31,418 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 51 selfloop transitions, 4 changer transitions 24/280 dead transitions. [2022-07-13 22:04:31,419 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 280 transitions, 1354 flow [2022-07-13 22:04:31,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 22:04:31,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-13 22:04:31,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2974 transitions. [2022-07-13 22:04:31,428 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8429705215419501 [2022-07-13 22:04:31,428 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2974 transitions. [2022-07-13 22:04:31,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2974 transitions. [2022-07-13 22:04:31,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:31,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2974 transitions. [2022-07-13 22:04:31,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 212.42857142857142) internal successors, (2974), 14 states have internal predecessors, (2974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:31,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:31,445 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:31,445 INFO L186 Difference]: Start difference. First operand has 314 places, 261 transitions, 1005 flow. Second operand 14 states and 2974 transitions. [2022-07-13 22:04:31,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 280 transitions, 1354 flow [2022-07-13 22:04:31,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 280 transitions, 1283 flow, removed 31 selfloop flow, removed 9 redundant places. [2022-07-13 22:04:31,469 INFO L242 Difference]: Finished difference. Result has 314 places, 249 transitions, 824 flow [2022-07-13 22:04:31,469 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=824, PETRI_PLACES=314, PETRI_TRANSITIONS=249} [2022-07-13 22:04:31,470 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 85 predicate places. [2022-07-13 22:04:31,470 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 249 transitions, 824 flow [2022-07-13 22:04:31,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:31,470 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:31,471 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] [2022-07-13 22:04:31,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 22:04:31,471 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:31,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:31,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1758871115, now seen corresponding path program 7 times [2022-07-13 22:04:31,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:31,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373375763] [2022-07-13 22:04:31,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:31,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:31,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:31,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:31,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373375763] [2022-07-13 22:04:31,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373375763] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:31,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:31,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:04:31,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203537173] [2022-07-13 22:04:31,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:31,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:04:31,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:31,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:04:31,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:04:31,583 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-13 22:04:31,584 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 249 transitions, 824 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:31,584 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:31,585 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-13 22:04:31,585 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:31,929 INFO L129 PetriNetUnfolder]: 160/1161 cut-off events. [2022-07-13 22:04:31,929 INFO L130 PetriNetUnfolder]: For 3152/3193 co-relation queries the response was YES. [2022-07-13 22:04:31,936 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3154 conditions, 1161 events. 160/1161 cut-off events. For 3152/3193 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 7027 event pairs, 113 based on Foata normal form. 3/1084 useless extension candidates. Maximal degree in co-relation 3104. Up to 327 conditions per place. [2022-07-13 22:04:31,939 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 51 selfloop transitions, 16 changer transitions 18/286 dead transitions. [2022-07-13 22:04:31,939 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 286 transitions, 1351 flow [2022-07-13 22:04:31,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:04:31,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:04:31,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3397 transitions. [2022-07-13 22:04:31,944 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8425099206349206 [2022-07-13 22:04:31,944 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3397 transitions. [2022-07-13 22:04:31,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3397 transitions. [2022-07-13 22:04:31,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:31,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3397 transitions. [2022-07-13 22:04:31,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 212.3125) internal successors, (3397), 16 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:31,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:31,955 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:31,955 INFO L186 Difference]: Start difference. First operand has 314 places, 249 transitions, 824 flow. Second operand 16 states and 3397 transitions. [2022-07-13 22:04:31,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 286 transitions, 1351 flow [2022-07-13 22:04:31,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 286 transitions, 1254 flow, removed 27 selfloop flow, removed 13 redundant places. [2022-07-13 22:04:31,974 INFO L242 Difference]: Finished difference. Result has 307 places, 258 transitions, 960 flow [2022-07-13 22:04:31,974 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=960, PETRI_PLACES=307, PETRI_TRANSITIONS=258} [2022-07-13 22:04:31,975 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 78 predicate places. [2022-07-13 22:04:31,975 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 258 transitions, 960 flow [2022-07-13 22:04:31,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:31,975 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:31,975 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] [2022-07-13 22:04:31,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 22:04:31,976 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:31,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:31,976 INFO L85 PathProgramCache]: Analyzing trace with hash 827468711, now seen corresponding path program 8 times [2022-07-13 22:04:31,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:31,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660081684] [2022-07-13 22:04:31,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:31,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:32,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:32,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:32,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660081684] [2022-07-13 22:04:32,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660081684] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:32,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:32,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:04:32,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073188914] [2022-07-13 22:04:32,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:32,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:04:32,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:32,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:04:32,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:04:32,080 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-13 22:04:32,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 258 transitions, 960 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:32,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:32,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-13 22:04:32,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:32,418 INFO L129 PetriNetUnfolder]: 156/1152 cut-off events. [2022-07-13 22:04:32,419 INFO L130 PetriNetUnfolder]: For 2624/2665 co-relation queries the response was YES. [2022-07-13 22:04:32,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3046 conditions, 1152 events. 156/1152 cut-off events. For 2624/2665 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6988 event pairs, 112 based on Foata normal form. 3/1072 useless extension candidates. Maximal degree in co-relation 2998. Up to 325 conditions per place. [2022-07-13 22:04:32,430 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 48 selfloop transitions, 17 changer transitions 18/284 dead transitions. [2022-07-13 22:04:32,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 284 transitions, 1391 flow [2022-07-13 22:04:32,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 22:04:32,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-13 22:04:32,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3189 transitions. [2022-07-13 22:04:32,435 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8436507936507937 [2022-07-13 22:04:32,435 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3189 transitions. [2022-07-13 22:04:32,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3189 transitions. [2022-07-13 22:04:32,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:32,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3189 transitions. [2022-07-13 22:04:32,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 212.6) internal successors, (3189), 15 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:32,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:32,491 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:32,491 INFO L186 Difference]: Start difference. First operand has 307 places, 258 transitions, 960 flow. Second operand 15 states and 3189 transitions. [2022-07-13 22:04:32,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 284 transitions, 1391 flow [2022-07-13 22:04:32,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 284 transitions, 1343 flow, removed 20 selfloop flow, removed 5 redundant places. [2022-07-13 22:04:32,507 INFO L242 Difference]: Finished difference. Result has 317 places, 261 transitions, 1044 flow [2022-07-13 22:04:32,507 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1044, PETRI_PLACES=317, PETRI_TRANSITIONS=261} [2022-07-13 22:04:32,507 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 88 predicate places. [2022-07-13 22:04:32,508 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 261 transitions, 1044 flow [2022-07-13 22:04:32,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:32,508 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:32,508 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] [2022-07-13 22:04:32,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 22:04:32,509 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:32,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:32,509 INFO L85 PathProgramCache]: Analyzing trace with hash -985639963, now seen corresponding path program 9 times [2022-07-13 22:04:32,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:32,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745436284] [2022-07-13 22:04:32,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:32,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:32,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:32,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:32,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745436284] [2022-07-13 22:04:32,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745436284] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:32,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:32,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:04:32,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492198151] [2022-07-13 22:04:32,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:32,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:04:32,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:32,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:04:32,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:04:32,611 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-13 22:04:32,613 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 261 transitions, 1044 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:32,613 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:32,613 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-13 22:04:32,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:32,920 INFO L129 PetriNetUnfolder]: 153/1143 cut-off events. [2022-07-13 22:04:32,921 INFO L130 PetriNetUnfolder]: For 2797/2838 co-relation queries the response was YES. [2022-07-13 22:04:32,927 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3049 conditions, 1143 events. 153/1143 cut-off events. For 2797/2838 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6900 event pairs, 111 based on Foata normal form. 3/1065 useless extension candidates. Maximal degree in co-relation 2996. Up to 324 conditions per place. [2022-07-13 22:04:32,930 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 52 selfloop transitions, 8 changer transitions 23/284 dead transitions. [2022-07-13 22:04:32,930 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 284 transitions, 1375 flow [2022-07-13 22:04:32,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 22:04:32,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-13 22:04:32,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2768 transitions. [2022-07-13 22:04:32,934 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8449328449328449 [2022-07-13 22:04:32,934 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2768 transitions. [2022-07-13 22:04:32,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2768 transitions. [2022-07-13 22:04:32,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:32,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2768 transitions. [2022-07-13 22:04:32,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 212.92307692307693) internal successors, (2768), 13 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:32,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 252.0) internal successors, (3528), 14 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:32,941 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 252.0) internal successors, (3528), 14 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:32,941 INFO L186 Difference]: Start difference. First operand has 317 places, 261 transitions, 1044 flow. Second operand 13 states and 2768 transitions. [2022-07-13 22:04:32,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 284 transitions, 1375 flow [2022-07-13 22:04:32,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 284 transitions, 1303 flow, removed 23 selfloop flow, removed 7 redundant places. [2022-07-13 22:04:32,962 INFO L242 Difference]: Finished difference. Result has 320 places, 253 transitions, 892 flow [2022-07-13 22:04:32,962 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=892, PETRI_PLACES=320, PETRI_TRANSITIONS=253} [2022-07-13 22:04:32,963 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 91 predicate places. [2022-07-13 22:04:32,963 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 253 transitions, 892 flow [2022-07-13 22:04:32,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:32,964 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:32,964 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] [2022-07-13 22:04:32,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 22:04:32,964 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:32,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:32,965 INFO L85 PathProgramCache]: Analyzing trace with hash 951573327, now seen corresponding path program 10 times [2022-07-13 22:04:32,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:32,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130621123] [2022-07-13 22:04:32,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:32,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:33,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:33,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:33,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130621123] [2022-07-13 22:04:33,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130621123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:33,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:33,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:04:33,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603637621] [2022-07-13 22:04:33,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:33,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:04:33,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:33,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:04:33,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:04:33,070 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-13 22:04:33,072 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 253 transitions, 892 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:33,072 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:33,072 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-13 22:04:33,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:33,388 INFO L129 PetriNetUnfolder]: 145/1075 cut-off events. [2022-07-13 22:04:33,388 INFO L130 PetriNetUnfolder]: For 2514/2555 co-relation queries the response was YES. [2022-07-13 22:04:33,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2801 conditions, 1075 events. 145/1075 cut-off events. For 2514/2555 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6225 event pairs, 109 based on Foata normal form. 3/997 useless extension candidates. Maximal degree in co-relation 2748. Up to 305 conditions per place. [2022-07-13 22:04:33,397 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 43 selfloop transitions, 2 changer transitions 26/270 dead transitions. [2022-07-13 22:04:33,397 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 270 transitions, 1155 flow [2022-07-13 22:04:33,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 22:04:33,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-13 22:04:33,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2974 transitions. [2022-07-13 22:04:33,401 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8429705215419501 [2022-07-13 22:04:33,401 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2974 transitions. [2022-07-13 22:04:33,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2974 transitions. [2022-07-13 22:04:33,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:33,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2974 transitions. [2022-07-13 22:04:33,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 212.42857142857142) internal successors, (2974), 14 states have internal predecessors, (2974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:33,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:33,409 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:33,409 INFO L186 Difference]: Start difference. First operand has 320 places, 253 transitions, 892 flow. Second operand 14 states and 2974 transitions. [2022-07-13 22:04:33,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 270 transitions, 1155 flow [2022-07-13 22:04:33,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 270 transitions, 1087 flow, removed 16 selfloop flow, removed 14 redundant places. [2022-07-13 22:04:33,428 INFO L242 Difference]: Finished difference. Result has 311 places, 240 transitions, 714 flow [2022-07-13 22:04:33,428 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=714, PETRI_PLACES=311, PETRI_TRANSITIONS=240} [2022-07-13 22:04:33,429 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 82 predicate places. [2022-07-13 22:04:33,429 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 240 transitions, 714 flow [2022-07-13 22:04:33,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:33,430 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:33,430 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] [2022-07-13 22:04:33,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 22:04:33,430 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:33,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:33,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1243438433, now seen corresponding path program 1 times [2022-07-13 22:04:33,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:33,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650603194] [2022-07-13 22:04:33,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:33,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:33,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:33,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:33,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650603194] [2022-07-13 22:04:33,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650603194] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:33,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:33,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:33,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095761541] [2022-07-13 22:04:33,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:33,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:33,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:33,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:33,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:33,474 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 252 [2022-07-13 22:04:33,475 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 240 transitions, 714 flow. Second operand has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:33,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:33,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 252 [2022-07-13 22:04:33,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:33,583 INFO L129 PetriNetUnfolder]: 42/597 cut-off events. [2022-07-13 22:04:33,583 INFO L130 PetriNetUnfolder]: For 837/861 co-relation queries the response was YES. [2022-07-13 22:04:33,588 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1226 conditions, 597 events. 42/597 cut-off events. For 837/861 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2501 event pairs, 22 based on Foata normal form. 3/568 useless extension candidates. Maximal degree in co-relation 1177. Up to 41 conditions per place. [2022-07-13 22:04:33,589 INFO L132 encePairwiseOnDemand]: 247/252 looper letters, 16 selfloop transitions, 2 changer transitions 12/246 dead transitions. [2022-07-13 22:04:33,589 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 246 transitions, 783 flow [2022-07-13 22:04:33,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:33,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:33,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 696 transitions. [2022-07-13 22:04:33,591 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9206349206349206 [2022-07-13 22:04:33,591 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 696 transitions. [2022-07-13 22:04:33,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 696 transitions. [2022-07-13 22:04:33,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:33,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 696 transitions. [2022-07-13 22:04:33,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:33,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:33,593 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:33,593 INFO L186 Difference]: Start difference. First operand has 311 places, 240 transitions, 714 flow. Second operand 3 states and 696 transitions. [2022-07-13 22:04:33,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 246 transitions, 783 flow [2022-07-13 22:04:33,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 246 transitions, 707 flow, removed 31 selfloop flow, removed 22 redundant places. [2022-07-13 22:04:33,602 INFO L242 Difference]: Finished difference. Result has 273 places, 232 transitions, 602 flow [2022-07-13 22:04:33,602 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=602, PETRI_PLACES=273, PETRI_TRANSITIONS=232} [2022-07-13 22:04:33,603 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 44 predicate places. [2022-07-13 22:04:33,603 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 232 transitions, 602 flow [2022-07-13 22:04:33,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:33,603 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:33,603 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] [2022-07-13 22:04:33,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 22:04:33,605 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:33,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:33,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1851538177, now seen corresponding path program 1 times [2022-07-13 22:04:33,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:33,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676647275] [2022-07-13 22:04:33,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:33,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:33,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:33,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:33,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676647275] [2022-07-13 22:04:33,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676647275] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:33,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:33,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:33,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579182816] [2022-07-13 22:04:33,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:33,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:33,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:33,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:33,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:33,649 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 252 [2022-07-13 22:04:33,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 232 transitions, 602 flow. Second operand has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:33,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:33,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 252 [2022-07-13 22:04:33,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:33,700 INFO L129 PetriNetUnfolder]: 25/348 cut-off events. [2022-07-13 22:04:33,700 INFO L130 PetriNetUnfolder]: For 194/195 co-relation queries the response was YES. [2022-07-13 22:04:33,703 INFO L84 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 348 events. 25/348 cut-off events. For 194/195 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 838 event pairs, 7 based on Foata normal form. 4/329 useless extension candidates. Maximal degree in co-relation 558. Up to 22 conditions per place. [2022-07-13 22:04:33,703 INFO L132 encePairwiseOnDemand]: 248/252 looper letters, 16 selfloop transitions, 2 changer transitions 11/236 dead transitions. [2022-07-13 22:04:33,703 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 236 transitions, 659 flow [2022-07-13 22:04:33,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:33,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:33,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 693 transitions. [2022-07-13 22:04:33,705 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2022-07-13 22:04:33,705 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 693 transitions. [2022-07-13 22:04:33,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 693 transitions. [2022-07-13 22:04:33,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:33,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 693 transitions. [2022-07-13 22:04:33,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:33,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:33,707 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:33,707 INFO L186 Difference]: Start difference. First operand has 273 places, 232 transitions, 602 flow. Second operand 3 states and 693 transitions. [2022-07-13 22:04:33,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 236 transitions, 659 flow [2022-07-13 22:04:33,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 236 transitions, 609 flow, removed 24 selfloop flow, removed 11 redundant places. [2022-07-13 22:04:33,713 INFO L242 Difference]: Finished difference. Result has 253 places, 223 transitions, 508 flow [2022-07-13 22:04:33,713 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=253, PETRI_TRANSITIONS=223} [2022-07-13 22:04:33,714 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 24 predicate places. [2022-07-13 22:04:33,714 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 223 transitions, 508 flow [2022-07-13 22:04:33,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:33,714 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:33,714 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] [2022-07-13 22:04:33,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 22:04:33,714 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:33,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:33,715 INFO L85 PathProgramCache]: Analyzing trace with hash -643342495, now seen corresponding path program 1 times [2022-07-13 22:04:33,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:33,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45639549] [2022-07-13 22:04:33,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:33,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:34,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:34,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:34,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45639549] [2022-07-13 22:04:34,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45639549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:34,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:34,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-13 22:04:34,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757474539] [2022-07-13 22:04:34,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:34,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-13 22:04:34,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:34,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-13 22:04:34,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-07-13 22:04:34,092 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-07-13 22:04:34,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 223 transitions, 508 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:34,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:34,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-07-13 22:04:34,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:37,654 INFO L129 PetriNetUnfolder]: 958/4403 cut-off events. [2022-07-13 22:04:37,654 INFO L130 PetriNetUnfolder]: For 603/609 co-relation queries the response was YES. [2022-07-13 22:04:37,668 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7289 conditions, 4403 events. 958/4403 cut-off events. For 603/609 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 35203 event pairs, 88 based on Foata normal form. 0/4115 useless extension candidates. Maximal degree in co-relation 7268. Up to 291 conditions per place. [2022-07-13 22:04:37,679 INFO L132 encePairwiseOnDemand]: 216/252 looper letters, 569 selfloop transitions, 68 changer transitions 0/792 dead transitions. [2022-07-13 22:04:37,679 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 792 transitions, 2960 flow [2022-07-13 22:04:37,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-07-13 22:04:37,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-07-13 22:04:37,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 9755 transitions. [2022-07-13 22:04:37,688 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7303833483078767 [2022-07-13 22:04:37,688 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 9755 transitions. [2022-07-13 22:04:37,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 9755 transitions. [2022-07-13 22:04:37,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:37,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 9755 transitions. [2022-07-13 22:04:37,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 184.0566037735849) internal successors, (9755), 53 states have internal predecessors, (9755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:37,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 252.0) internal successors, (13608), 54 states have internal predecessors, (13608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:37,710 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 252.0) internal successors, (13608), 54 states have internal predecessors, (13608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:37,711 INFO L186 Difference]: Start difference. First operand has 253 places, 223 transitions, 508 flow. Second operand 53 states and 9755 transitions. [2022-07-13 22:04:37,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 792 transitions, 2960 flow [2022-07-13 22:04:37,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 792 transitions, 2938 flow, removed 11 selfloop flow, removed 7 redundant places. [2022-07-13 22:04:37,734 INFO L242 Difference]: Finished difference. Result has 303 places, 274 transitions, 796 flow [2022-07-13 22:04:37,734 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=796, PETRI_PLACES=303, PETRI_TRANSITIONS=274} [2022-07-13 22:04:37,735 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 74 predicate places. [2022-07-13 22:04:37,735 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 274 transitions, 796 flow [2022-07-13 22:04:37,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:37,736 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:37,736 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] [2022-07-13 22:04:37,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 22:04:37,736 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:37,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:37,737 INFO L85 PathProgramCache]: Analyzing trace with hash 214875707, now seen corresponding path program 2 times [2022-07-13 22:04:37,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:37,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012085824] [2022-07-13 22:04:37,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:37,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:38,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:38,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:38,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012085824] [2022-07-13 22:04:38,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012085824] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:38,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:38,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-13 22:04:38,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123000647] [2022-07-13 22:04:38,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:38,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-13 22:04:38,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:38,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-13 22:04:38,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-07-13 22:04:38,138 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-07-13 22:04:38,141 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 274 transitions, 796 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:38,141 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:38,141 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-07-13 22:04:38,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:41,586 INFO L129 PetriNetUnfolder]: 1507/7402 cut-off events. [2022-07-13 22:04:41,586 INFO L130 PetriNetUnfolder]: For 1886/1907 co-relation queries the response was YES. [2022-07-13 22:04:41,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13539 conditions, 7402 events. 1507/7402 cut-off events. For 1886/1907 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 68144 event pairs, 597 based on Foata normal form. 1/7080 useless extension candidates. Maximal degree in co-relation 13507. Up to 1160 conditions per place. [2022-07-13 22:04:41,632 INFO L132 encePairwiseOnDemand]: 214/252 looper letters, 463 selfloop transitions, 87 changer transitions 0/705 dead transitions. [2022-07-13 22:04:41,632 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 705 transitions, 3338 flow [2022-07-13 22:04:41,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-13 22:04:41,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-07-13 22:04:41,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 8041 transitions. [2022-07-13 22:04:41,639 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7251984126984127 [2022-07-13 22:04:41,639 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 8041 transitions. [2022-07-13 22:04:41,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 8041 transitions. [2022-07-13 22:04:41,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:41,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 8041 transitions. [2022-07-13 22:04:41,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 182.75) internal successors, (8041), 44 states have internal predecessors, (8041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:41,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 252.0) internal successors, (11340), 45 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:41,661 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 252.0) internal successors, (11340), 45 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:41,662 INFO L186 Difference]: Start difference. First operand has 303 places, 274 transitions, 796 flow. Second operand 44 states and 8041 transitions. [2022-07-13 22:04:41,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 705 transitions, 3338 flow [2022-07-13 22:04:41,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 705 transitions, 3142 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-07-13 22:04:41,679 INFO L242 Difference]: Finished difference. Result has 376 places, 357 transitions, 1468 flow [2022-07-13 22:04:41,680 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1468, PETRI_PLACES=376, PETRI_TRANSITIONS=357} [2022-07-13 22:04:41,681 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 147 predicate places. [2022-07-13 22:04:41,681 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 357 transitions, 1468 flow [2022-07-13 22:04:41,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:41,682 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:41,682 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] [2022-07-13 22:04:41,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 22:04:41,682 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:41,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:41,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1848306263, now seen corresponding path program 3 times [2022-07-13 22:04:41,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:41,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893011455] [2022-07-13 22:04:41,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:41,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:42,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:42,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:42,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893011455] [2022-07-13 22:04:42,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893011455] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:42,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:42,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-13 22:04:42,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325945609] [2022-07-13 22:04:42,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:42,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-13 22:04:42,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:42,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-13 22:04:42,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-07-13 22:04:42,077 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-07-13 22:04:42,079 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 357 transitions, 1468 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:42,079 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:42,079 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-07-13 22:04:42,079 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:48,456 INFO L129 PetriNetUnfolder]: 2948/15266 cut-off events. [2022-07-13 22:04:48,456 INFO L130 PetriNetUnfolder]: For 12842/12914 co-relation queries the response was YES. [2022-07-13 22:04:48,531 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31539 conditions, 15266 events. 2948/15266 cut-off events. For 12842/12914 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 172941 event pairs, 993 based on Foata normal form. 9/14713 useless extension candidates. Maximal degree in co-relation 31467. Up to 1763 conditions per place. [2022-07-13 22:04:48,570 INFO L132 encePairwiseOnDemand]: 216/252 looper letters, 758 selfloop transitions, 143 changer transitions 0/1056 dead transitions. [2022-07-13 22:04:48,571 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 1056 transitions, 6357 flow [2022-07-13 22:04:48,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-07-13 22:04:48,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2022-07-13 22:04:48,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 11772 transitions. [2022-07-13 22:04:48,580 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7299107142857143 [2022-07-13 22:04:48,580 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 11772 transitions. [2022-07-13 22:04:48,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 11772 transitions. [2022-07-13 22:04:48,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:48,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 11772 transitions. [2022-07-13 22:04:48,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 183.9375) internal successors, (11772), 64 states have internal predecessors, (11772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:48,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 252.0) internal successors, (16380), 65 states have internal predecessors, (16380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:48,605 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 252.0) internal successors, (16380), 65 states have internal predecessors, (16380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:48,606 INFO L186 Difference]: Start difference. First operand has 376 places, 357 transitions, 1468 flow. Second operand 64 states and 11772 transitions. [2022-07-13 22:04:48,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 1056 transitions, 6357 flow [2022-07-13 22:04:48,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 1056 transitions, 6313 flow, removed 22 selfloop flow, removed 0 redundant places. [2022-07-13 22:04:48,784 INFO L242 Difference]: Finished difference. Result has 491 places, 481 transitions, 2723 flow [2022-07-13 22:04:48,784 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=2723, PETRI_PLACES=491, PETRI_TRANSITIONS=481} [2022-07-13 22:04:48,785 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 262 predicate places. [2022-07-13 22:04:48,785 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 481 transitions, 2723 flow [2022-07-13 22:04:48,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:48,786 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:48,786 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] [2022-07-13 22:04:48,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 22:04:48,786 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:48,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:48,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1038615649, now seen corresponding path program 4 times [2022-07-13 22:04:48,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:48,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042051997] [2022-07-13 22:04:48,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:48,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:49,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:49,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:49,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042051997] [2022-07-13 22:04:49,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042051997] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:49,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:49,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-13 22:04:49,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965395000] [2022-07-13 22:04:49,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:49,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-13 22:04:49,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:49,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-13 22:04:49,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-07-13 22:04:49,158 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-07-13 22:04:49,160 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 481 transitions, 2723 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:49,160 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:49,161 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-07-13 22:04:49,161 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:57,808 INFO L129 PetriNetUnfolder]: 3745/19931 cut-off events. [2022-07-13 22:04:57,808 INFO L130 PetriNetUnfolder]: For 34125/34257 co-relation queries the response was YES. [2022-07-13 22:04:57,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46270 conditions, 19931 events. 3745/19931 cut-off events. For 34125/34257 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 241983 event pairs, 774 based on Foata normal form. 29/19251 useless extension candidates. Maximal degree in co-relation 46145. Up to 2766 conditions per place. [2022-07-13 22:04:58,050 INFO L132 encePairwiseOnDemand]: 216/252 looper letters, 869 selfloop transitions, 244 changer transitions 0/1268 dead transitions. [2022-07-13 22:04:58,051 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 1268 transitions, 10110 flow [2022-07-13 22:04:58,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-07-13 22:04:58,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2022-07-13 22:04:58,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 14398 transitions. [2022-07-13 22:04:58,064 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.723226843480008 [2022-07-13 22:04:58,064 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 14398 transitions. [2022-07-13 22:04:58,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 14398 transitions. [2022-07-13 22:04:58,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:58,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 14398 transitions. [2022-07-13 22:04:58,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 182.25316455696202) internal successors, (14398), 79 states have internal predecessors, (14398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:58,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 252.0) internal successors, (20160), 80 states have internal predecessors, (20160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:58,100 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 252.0) internal successors, (20160), 80 states have internal predecessors, (20160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:58,101 INFO L186 Difference]: Start difference. First operand has 491 places, 481 transitions, 2723 flow. Second operand 79 states and 14398 transitions. [2022-07-13 22:04:58,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 1268 transitions, 10110 flow [2022-07-13 22:04:58,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 1268 transitions, 9594 flow, removed 258 selfloop flow, removed 0 redundant places. [2022-07-13 22:04:58,365 INFO L242 Difference]: Finished difference. Result has 632 places, 602 transitions, 4198 flow [2022-07-13 22:04:58,366 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=2409, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=4198, PETRI_PLACES=632, PETRI_TRANSITIONS=602} [2022-07-13 22:04:58,366 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 403 predicate places. [2022-07-13 22:04:58,367 INFO L495 AbstractCegarLoop]: Abstraction has has 632 places, 602 transitions, 4198 flow [2022-07-13 22:04:58,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:58,367 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:58,368 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] [2022-07-13 22:04:58,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 22:04:58,368 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:04:58,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:58,368 INFO L85 PathProgramCache]: Analyzing trace with hash 249018489, now seen corresponding path program 5 times [2022-07-13 22:04:58,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:58,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748728523] [2022-07-13 22:04:58,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:58,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:58,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:58,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:58,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748728523] [2022-07-13 22:04:58,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748728523] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:58,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:58,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-13 22:04:58,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850748069] [2022-07-13 22:04:58,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:58,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-13 22:04:58,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:58,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-13 22:04:58,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-07-13 22:04:58,769 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-07-13 22:04:58,772 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 632 places, 602 transitions, 4198 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:58,772 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:58,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-07-13 22:04:58,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:08,228 INFO L129 PetriNetUnfolder]: 3898/22825 cut-off events. [2022-07-13 22:05:08,229 INFO L130 PetriNetUnfolder]: For 56782/56953 co-relation queries the response was YES. [2022-07-13 22:05:08,699 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55280 conditions, 22825 events. 3898/22825 cut-off events. For 56782/56953 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 284993 event pairs, 725 based on Foata normal form. 29/22155 useless extension candidates. Maximal degree in co-relation 55091. Up to 2581 conditions per place. [2022-07-13 22:05:08,775 INFO L132 encePairwiseOnDemand]: 216/252 looper letters, 914 selfloop transitions, 288 changer transitions 0/1357 dead transitions. [2022-07-13 22:05:08,775 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 684 places, 1357 transitions, 12752 flow [2022-07-13 22:05:08,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-07-13 22:05:08,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-07-13 22:05:08,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 9761 transitions. [2022-07-13 22:05:08,785 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7308325846061695 [2022-07-13 22:05:08,785 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 9761 transitions. [2022-07-13 22:05:08,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 9761 transitions. [2022-07-13 22:05:08,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:08,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 9761 transitions. [2022-07-13 22:05:08,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 184.16981132075472) internal successors, (9761), 53 states have internal predecessors, (9761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:08,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 252.0) internal successors, (13608), 54 states have internal predecessors, (13608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:08,812 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 252.0) internal successors, (13608), 54 states have internal predecessors, (13608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:08,813 INFO L186 Difference]: Start difference. First operand has 632 places, 602 transitions, 4198 flow. Second operand 53 states and 9761 transitions. [2022-07-13 22:05:08,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 684 places, 1357 transitions, 12752 flow [2022-07-13 22:05:09,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 673 places, 1357 transitions, 11282 flow, removed 283 selfloop flow, removed 11 redundant places. [2022-07-13 22:05:09,330 INFO L242 Difference]: Finished difference. Result has 693 places, 625 transitions, 4451 flow [2022-07-13 22:05:09,331 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=3487, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=4451, PETRI_PLACES=693, PETRI_TRANSITIONS=625} [2022-07-13 22:05:09,332 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 464 predicate places. [2022-07-13 22:05:09,332 INFO L495 AbstractCegarLoop]: Abstraction has has 693 places, 625 transitions, 4451 flow [2022-07-13 22:05:09,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:09,336 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:09,336 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] [2022-07-13 22:05:09,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-13 22:05:09,336 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:09,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:09,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1852996547, now seen corresponding path program 6 times [2022-07-13 22:05:09,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:09,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251999475] [2022-07-13 22:05:09,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:09,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:09,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:09,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:09,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251999475] [2022-07-13 22:05:09,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251999475] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:09,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:09,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-13 22:05:09,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198289619] [2022-07-13 22:05:09,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:09,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-13 22:05:09,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:09,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-13 22:05:09,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-07-13 22:05:09,752 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-07-13 22:05:09,755 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 693 places, 625 transitions, 4451 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:09,755 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:09,755 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-07-13 22:05:09,755 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:20,363 INFO L129 PetriNetUnfolder]: 4330/24467 cut-off events. [2022-07-13 22:05:20,363 INFO L130 PetriNetUnfolder]: For 76056/76226 co-relation queries the response was YES. [2022-07-13 22:05:20,795 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62513 conditions, 24467 events. 4330/24467 cut-off events. For 76056/76226 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 308246 event pairs, 2555 based on Foata normal form. 25/23615 useless extension candidates. Maximal degree in co-relation 62304. Up to 4853 conditions per place. [2022-07-13 22:05:20,883 INFO L132 encePairwiseOnDemand]: 214/252 looper letters, 788 selfloop transitions, 133 changer transitions 0/1076 dead transitions. [2022-07-13 22:05:20,883 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 735 places, 1076 transitions, 10622 flow [2022-07-13 22:05:20,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-13 22:05:20,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-07-13 22:05:20,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 7843 transitions. [2022-07-13 22:05:20,890 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7237910668143226 [2022-07-13 22:05:20,891 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 7843 transitions. [2022-07-13 22:05:20,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 7843 transitions. [2022-07-13 22:05:20,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:20,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 7843 transitions. [2022-07-13 22:05:20,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 182.3953488372093) internal successors, (7843), 43 states have internal predecessors, (7843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:20,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 252.0) internal successors, (11088), 44 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:20,907 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 252.0) internal successors, (11088), 44 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:20,907 INFO L186 Difference]: Start difference. First operand has 693 places, 625 transitions, 4451 flow. Second operand 43 states and 7843 transitions. [2022-07-13 22:05:20,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 735 places, 1076 transitions, 10622 flow [2022-07-13 22:05:21,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 703 places, 1076 transitions, 9683 flow, removed 85 selfloop flow, removed 32 redundant places. [2022-07-13 22:05:21,461 INFO L242 Difference]: Finished difference. Result has 739 places, 707 transitions, 5075 flow [2022-07-13 22:05:21,462 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=3819, PETRI_DIFFERENCE_MINUEND_PLACES=661, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=5075, PETRI_PLACES=739, PETRI_TRANSITIONS=707} [2022-07-13 22:05:21,463 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 510 predicate places. [2022-07-13 22:05:21,463 INFO L495 AbstractCegarLoop]: Abstraction has has 739 places, 707 transitions, 5075 flow [2022-07-13 22:05:21,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:21,464 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:21,464 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] [2022-07-13 22:05:21,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 22:05:21,464 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:21,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:21,464 INFO L85 PathProgramCache]: Analyzing trace with hash -623103677, now seen corresponding path program 7 times [2022-07-13 22:05:21,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:21,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61128484] [2022-07-13 22:05:21,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:21,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:21,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:21,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:21,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61128484] [2022-07-13 22:05:21,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61128484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:21,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:21,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-13 22:05:21,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892256816] [2022-07-13 22:05:21,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:21,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-13 22:05:21,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:21,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-13 22:05:21,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-07-13 22:05:21,809 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-07-13 22:05:21,811 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 739 places, 707 transitions, 5075 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:21,811 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:21,812 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-07-13 22:05:21,812 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand