./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7850c8f92b7e0b0b866687e8f3ea719169cacbc5985a977f15b280bf9bb53b5b --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:25:50,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:25:50,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:25:50,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:25:50,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:25:50,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:25:50,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:25:50,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:25:50,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:25:50,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:25:50,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:25:50,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:25:50,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:25:50,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:25:50,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:25:50,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:25:50,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:25:50,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:25:50,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:25:50,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:25:50,266 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:25:50,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:25:50,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:25:50,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:25:50,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:25:50,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:25:50,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:25:50,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:25:50,278 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:25:50,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:25:50,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:25:50,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:25:50,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:25:50,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:25:50,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:25:50,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:25:50,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:25:50,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:25:50,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:25:50,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:25:50,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:25:50,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:25:50,286 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:25:50,309 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:25:50,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:25:50,310 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:25:50,310 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:25:50,310 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:25:50,311 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:25:50,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:25:50,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:25:50,311 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:25:50,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:25:50,312 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:25:50,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:25:50,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:25:50,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:25:50,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:25:50,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:25:50,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:25:50,313 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:25:50,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:25:50,314 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:25:50,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:25:50,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:25:50,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:25:50,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:25:50,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:25:50,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:25:50,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:25:50,315 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:25:50,315 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:25:50,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:25:50,316 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:25:50,316 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:25:50,316 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:25:50,316 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7850c8f92b7e0b0b866687e8f3ea719169cacbc5985a977f15b280bf9bb53b5b [2022-07-19 21:25:50,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:25:50,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:25:50,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:25:50,522 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:25:50,535 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:25:50,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c [2022-07-19 21:25:50,575 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a8f957ce/87c5bb4450b347c0962722fb744a325e/FLAGa798ef88b [2022-07-19 21:25:50,946 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:25:50,947 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c [2022-07-19 21:25:50,960 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a8f957ce/87c5bb4450b347c0962722fb744a325e/FLAGa798ef88b [2022-07-19 21:25:51,339 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a8f957ce/87c5bb4450b347c0962722fb744a325e [2022-07-19 21:25:51,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:25:51,358 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:25:51,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:25:51,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:25:51,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:25:51,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:25:51" (1/1) ... [2022-07-19 21:25:51,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dedb1b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:51, skipping insertion in model container [2022-07-19 21:25:51,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:25:51" (1/1) ... [2022-07-19 21:25:51,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:25:51,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:25:51,497 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c[2817,2830] [2022-07-19 21:25:51,502 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:25:51,506 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:25:51,524 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c[2817,2830] [2022-07-19 21:25:51,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:25:51,535 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:25:51,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:51 WrapperNode [2022-07-19 21:25:51,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:25:51,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:25:51,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:25:51,536 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:25:51,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:51" (1/1) ... [2022-07-19 21:25:51,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:51" (1/1) ... [2022-07-19 21:25:51,571 INFO L137 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 217 [2022-07-19 21:25:51,572 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:25:51,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:25:51,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:25:51,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:25:51,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:51" (1/1) ... [2022-07-19 21:25:51,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:51" (1/1) ... [2022-07-19 21:25:51,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:51" (1/1) ... [2022-07-19 21:25:51,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:51" (1/1) ... [2022-07-19 21:25:51,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:51" (1/1) ... [2022-07-19 21:25:51,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:51" (1/1) ... [2022-07-19 21:25:51,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:51" (1/1) ... [2022-07-19 21:25:51,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:25:51,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:25:51,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:25:51,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:25:51,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:51" (1/1) ... [2022-07-19 21:25:51,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:25:51,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:25:51,660 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) [2022-07-19 21:25:51,662 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 [2022-07-19 21:25:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:25:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:25:51,698 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:25:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:25:51,699 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:25:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-19 21:25:51,699 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-19 21:25:51,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:25:51,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:25:51,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:25:51,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:25:51,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:25:51,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:25:51,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:25:51,706 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:25:51,767 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:25:51,768 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:25:51,994 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:25:52,003 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:25:52,003 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:25:52,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:25:52 BoogieIcfgContainer [2022-07-19 21:25:52,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:25:52,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:25:52,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:25:52,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:25:52,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:25:51" (1/3) ... [2022-07-19 21:25:52,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257637d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:25:52, skipping insertion in model container [2022-07-19 21:25:52,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:51" (2/3) ... [2022-07-19 21:25:52,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257637d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:25:52, skipping insertion in model container [2022-07-19 21:25:52,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:25:52" (3/3) ... [2022-07-19 21:25:52,011 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-file-item-trans.wvr.c [2022-07-19 21:25:52,014 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:25:52,020 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:25:52,020 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:25:52,020 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:25:52,106 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-19 21:25:52,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 263 places, 278 transitions, 580 flow [2022-07-19 21:25:52,244 INFO L129 PetriNetUnfolder]: 25/275 cut-off events. [2022-07-19 21:25:52,244 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:25:52,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 275 events. 25/275 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 737 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 199. Up to 2 conditions per place. [2022-07-19 21:25:52,261 INFO L82 GeneralOperation]: Start removeDead. Operand has 263 places, 278 transitions, 580 flow [2022-07-19 21:25:52,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 264 transitions, 546 flow [2022-07-19 21:25:52,283 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:25:52,288 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@47ec0e36, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@407444e3 [2022-07-19 21:25:52,288 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-19 21:25:52,341 INFO L129 PetriNetUnfolder]: 25/263 cut-off events. [2022-07-19 21:25:52,341 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:25:52,341 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:52,342 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:52,342 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:52,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:52,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1520883517, now seen corresponding path program 1 times [2022-07-19 21:25:52,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:52,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743550841] [2022-07-19 21:25:52,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:52,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:52,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:52,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:52,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743550841] [2022-07-19 21:25:52,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743550841] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:52,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:52,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:25:52,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973489859] [2022-07-19 21:25:52,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:52,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:25:52,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:52,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:25:52,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:25:52,658 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 278 [2022-07-19 21:25:52,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 264 transitions, 546 flow. Second operand has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:52,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:52,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 278 [2022-07-19 21:25:52,662 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:52,777 INFO L129 PetriNetUnfolder]: 59/695 cut-off events. [2022-07-19 21:25:52,777 INFO L130 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-07-19 21:25:52,784 INFO L84 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 695 events. 59/695 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3821 event pairs, 5 based on Foata normal form. 39/656 useless extension candidates. Maximal degree in co-relation 519. Up to 23 conditions per place. [2022-07-19 21:25:52,789 INFO L132 encePairwiseOnDemand]: 267/278 looper letters, 17 selfloop transitions, 2 changer transitions 1/264 dead transitions. [2022-07-19 21:25:52,789 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 264 transitions, 599 flow [2022-07-19 21:25:52,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:25:52,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:25:52,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 809 transitions. [2022-07-19 21:25:52,804 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9700239808153477 [2022-07-19 21:25:52,805 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 809 transitions. [2022-07-19 21:25:52,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 809 transitions. [2022-07-19 21:25:52,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:52,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 809 transitions. [2022-07-19 21:25:52,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 269.6666666666667) internal successors, (809), 3 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:52,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:52,825 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:52,827 INFO L186 Difference]: Start difference. First operand has 249 places, 264 transitions, 546 flow. Second operand 3 states and 809 transitions. [2022-07-19 21:25:52,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 264 transitions, 599 flow [2022-07-19 21:25:52,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 264 transitions, 577 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-19 21:25:52,840 INFO L242 Difference]: Finished difference. Result has 247 places, 258 transitions, 538 flow [2022-07-19 21:25:52,842 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=538, PETRI_PLACES=247, PETRI_TRANSITIONS=258} [2022-07-19 21:25:52,844 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, -2 predicate places. [2022-07-19 21:25:52,844 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 258 transitions, 538 flow [2022-07-19 21:25:52,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:52,845 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:52,845 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:52,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:25:52,846 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:52,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:52,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1354549505, now seen corresponding path program 1 times [2022-07-19 21:25:52,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:52,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631662702] [2022-07-19 21:25:52,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:52,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:52,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:52,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:52,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631662702] [2022-07-19 21:25:52,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631662702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:52,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:52,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:25:52,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67540396] [2022-07-19 21:25:52,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:52,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:25:52,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:52,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:25:52,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:25:52,978 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 278 [2022-07-19 21:25:52,979 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 258 transitions, 538 flow. Second operand has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:52,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:52,979 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 278 [2022-07-19 21:25:52,981 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:53,066 INFO L129 PetriNetUnfolder]: 49/605 cut-off events. [2022-07-19 21:25:53,067 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-07-19 21:25:53,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 671 conditions, 605 events. 49/605 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2949 event pairs, 6 based on Foata normal form. 4/550 useless extension candidates. Maximal degree in co-relation 506. Up to 20 conditions per place. [2022-07-19 21:25:53,072 INFO L132 encePairwiseOnDemand]: 272/278 looper letters, 17 selfloop transitions, 4 changer transitions 0/265 dead transitions. [2022-07-19 21:25:53,072 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 265 transitions, 603 flow [2022-07-19 21:25:53,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:25:53,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:25:53,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 795 transitions. [2022-07-19 21:25:53,075 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9532374100719424 [2022-07-19 21:25:53,075 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 795 transitions. [2022-07-19 21:25:53,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 795 transitions. [2022-07-19 21:25:53,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:53,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 795 transitions. [2022-07-19 21:25:53,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,079 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,079 INFO L186 Difference]: Start difference. First operand has 247 places, 258 transitions, 538 flow. Second operand 3 states and 795 transitions. [2022-07-19 21:25:53,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 265 transitions, 603 flow [2022-07-19 21:25:53,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 265 transitions, 601 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:25:53,087 INFO L242 Difference]: Finished difference. Result has 249 places, 260 transitions, 568 flow [2022-07-19 21:25:53,087 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=568, PETRI_PLACES=249, PETRI_TRANSITIONS=260} [2022-07-19 21:25:53,088 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 0 predicate places. [2022-07-19 21:25:53,088 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 260 transitions, 568 flow [2022-07-19 21:25:53,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,089 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:53,090 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:53,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:25:53,090 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:53,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:53,093 INFO L85 PathProgramCache]: Analyzing trace with hash 98904019, now seen corresponding path program 1 times [2022-07-19 21:25:53,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:53,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934249673] [2022-07-19 21:25:53,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:53,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:53,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:53,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:53,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934249673] [2022-07-19 21:25:53,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934249673] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:53,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:53,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:25:53,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334423328] [2022-07-19 21:25:53,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:53,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:25:53,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:53,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:25:53,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:25:53,142 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 278 [2022-07-19 21:25:53,143 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 260 transitions, 568 flow. Second operand has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,143 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:53,143 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 278 [2022-07-19 21:25:53,143 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:53,288 INFO L129 PetriNetUnfolder]: 119/1449 cut-off events. [2022-07-19 21:25:53,288 INFO L130 PetriNetUnfolder]: For 33/39 co-relation queries the response was YES. [2022-07-19 21:25:53,296 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1588 conditions, 1449 events. 119/1449 cut-off events. For 33/39 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 11862 event pairs, 13 based on Foata normal form. 0/1292 useless extension candidates. Maximal degree in co-relation 909. Up to 54 conditions per place. [2022-07-19 21:25:53,300 INFO L132 encePairwiseOnDemand]: 270/278 looper letters, 17 selfloop transitions, 5 changer transitions 0/268 dead transitions. [2022-07-19 21:25:53,301 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 268 transitions, 633 flow [2022-07-19 21:25:53,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:25:53,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:25:53,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 793 transitions. [2022-07-19 21:25:53,303 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9508393285371702 [2022-07-19 21:25:53,303 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 793 transitions. [2022-07-19 21:25:53,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 793 transitions. [2022-07-19 21:25:53,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:53,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 793 transitions. [2022-07-19 21:25:53,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,307 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,307 INFO L186 Difference]: Start difference. First operand has 249 places, 260 transitions, 568 flow. Second operand 3 states and 793 transitions. [2022-07-19 21:25:53,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 268 transitions, 633 flow [2022-07-19 21:25:53,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 268 transitions, 621 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-19 21:25:53,312 INFO L242 Difference]: Finished difference. Result has 251 places, 263 transitions, 594 flow [2022-07-19 21:25:53,312 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=594, PETRI_PLACES=251, PETRI_TRANSITIONS=263} [2022-07-19 21:25:53,313 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 2 predicate places. [2022-07-19 21:25:53,313 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 263 transitions, 594 flow [2022-07-19 21:25:53,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,313 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:53,313 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:53,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:25:53,314 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:53,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:53,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1842374523, now seen corresponding path program 2 times [2022-07-19 21:25:53,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:53,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918359315] [2022-07-19 21:25:53,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:53,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:53,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:53,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:53,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:53,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918359315] [2022-07-19 21:25:53,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918359315] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:53,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:53,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:25:53,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044230671] [2022-07-19 21:25:53,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:53,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:25:53,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:53,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:25:53,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:25:53,355 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 278 [2022-07-19 21:25:53,356 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 263 transitions, 594 flow. Second operand has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,356 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:53,356 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 278 [2022-07-19 21:25:53,356 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:53,523 INFO L129 PetriNetUnfolder]: 103/1263 cut-off events. [2022-07-19 21:25:53,524 INFO L130 PetriNetUnfolder]: For 84/90 co-relation queries the response was YES. [2022-07-19 21:25:53,530 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1432 conditions, 1263 events. 103/1263 cut-off events. For 84/90 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 9658 event pairs, 13 based on Foata normal form. 10/1151 useless extension candidates. Maximal degree in co-relation 789. Up to 39 conditions per place. [2022-07-19 21:25:53,534 INFO L132 encePairwiseOnDemand]: 272/278 looper letters, 22 selfloop transitions, 3 changer transitions 0/271 dead transitions. [2022-07-19 21:25:53,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 271 transitions, 671 flow [2022-07-19 21:25:53,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:25:53,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:25:53,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 793 transitions. [2022-07-19 21:25:53,536 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9508393285371702 [2022-07-19 21:25:53,536 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 793 transitions. [2022-07-19 21:25:53,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 793 transitions. [2022-07-19 21:25:53,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:53,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 793 transitions. [2022-07-19 21:25:53,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,540 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,540 INFO L186 Difference]: Start difference. First operand has 251 places, 263 transitions, 594 flow. Second operand 3 states and 793 transitions. [2022-07-19 21:25:53,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 271 transitions, 671 flow [2022-07-19 21:25:53,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 271 transitions, 661 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:25:53,544 INFO L242 Difference]: Finished difference. Result has 253 places, 266 transitions, 620 flow [2022-07-19 21:25:53,545 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=620, PETRI_PLACES=253, PETRI_TRANSITIONS=266} [2022-07-19 21:25:53,545 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 4 predicate places. [2022-07-19 21:25:53,546 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 266 transitions, 620 flow [2022-07-19 21:25:53,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,546 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:53,546 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:53,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:25:53,547 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:53,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:53,547 INFO L85 PathProgramCache]: Analyzing trace with hash 386728125, now seen corresponding path program 1 times [2022-07-19 21:25:53,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:53,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424955160] [2022-07-19 21:25:53,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:53,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:53,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:53,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:53,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424955160] [2022-07-19 21:25:53,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424955160] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:53,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:53,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:25:53,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116970902] [2022-07-19 21:25:53,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:53,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:25:53,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:53,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:25:53,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:25:53,618 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 278 [2022-07-19 21:25:53,620 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 266 transitions, 620 flow. Second operand has 7 states, 7 states have (on average 253.28571428571428) internal successors, (1773), 7 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:53,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 278 [2022-07-19 21:25:53,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:53,783 INFO L129 PetriNetUnfolder]: 118/1068 cut-off events. [2022-07-19 21:25:53,784 INFO L130 PetriNetUnfolder]: For 61/92 co-relation queries the response was YES. [2022-07-19 21:25:53,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1400 conditions, 1068 events. 118/1068 cut-off events. For 61/92 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 8650 event pairs, 20 based on Foata normal form. 3/984 useless extension candidates. Maximal degree in co-relation 764. Up to 103 conditions per place. [2022-07-19 21:25:53,792 INFO L132 encePairwiseOnDemand]: 269/278 looper letters, 20 selfloop transitions, 6 changer transitions 7/281 dead transitions. [2022-07-19 21:25:53,792 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 281 transitions, 724 flow [2022-07-19 21:25:53,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:25:53,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:25:53,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1791 transitions. [2022-07-19 21:25:53,795 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.920349434737924 [2022-07-19 21:25:53,795 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1791 transitions. [2022-07-19 21:25:53,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1791 transitions. [2022-07-19 21:25:53,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:53,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1791 transitions. [2022-07-19 21:25:53,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 255.85714285714286) internal successors, (1791), 7 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 278.0) internal successors, (2224), 8 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,803 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 278.0) internal successors, (2224), 8 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,803 INFO L186 Difference]: Start difference. First operand has 253 places, 266 transitions, 620 flow. Second operand 7 states and 1791 transitions. [2022-07-19 21:25:53,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 281 transitions, 724 flow [2022-07-19 21:25:53,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 281 transitions, 715 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-07-19 21:25:53,809 INFO L242 Difference]: Finished difference. Result has 263 places, 270 transitions, 655 flow [2022-07-19 21:25:53,810 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=655, PETRI_PLACES=263, PETRI_TRANSITIONS=270} [2022-07-19 21:25:53,812 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 14 predicate places. [2022-07-19 21:25:53,812 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 270 transitions, 655 flow [2022-07-19 21:25:53,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 253.28571428571428) internal successors, (1773), 7 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,814 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:53,814 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:53,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:25:53,814 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:53,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:53,816 INFO L85 PathProgramCache]: Analyzing trace with hash -932884603, now seen corresponding path program 1 times [2022-07-19 21:25:53,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:53,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36182682] [2022-07-19 21:25:53,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:53,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:53,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:53,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:53,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36182682] [2022-07-19 21:25:53,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36182682] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:53,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:53,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:25:53,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730843352] [2022-07-19 21:25:53,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:53,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:25:53,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:53,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:25:53,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:25:53,881 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 278 [2022-07-19 21:25:53,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 270 transitions, 655 flow. Second operand has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:53,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 278 [2022-07-19 21:25:53,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:54,155 INFO L129 PetriNetUnfolder]: 185/2665 cut-off events. [2022-07-19 21:25:54,155 INFO L130 PetriNetUnfolder]: For 110/157 co-relation queries the response was YES. [2022-07-19 21:25:54,169 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3284 conditions, 2665 events. 185/2665 cut-off events. For 110/157 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 27676 event pairs, 44 based on Foata normal form. 0/2410 useless extension candidates. Maximal degree in co-relation 3248. Up to 149 conditions per place. [2022-07-19 21:25:54,175 INFO L132 encePairwiseOnDemand]: 268/278 looper letters, 18 selfloop transitions, 6 changer transitions 0/278 dead transitions. [2022-07-19 21:25:54,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 278 transitions, 723 flow [2022-07-19 21:25:54,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:25:54,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:25:54,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 790 transitions. [2022-07-19 21:25:54,177 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.947242206235012 [2022-07-19 21:25:54,177 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 790 transitions. [2022-07-19 21:25:54,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 790 transitions. [2022-07-19 21:25:54,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:54,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 790 transitions. [2022-07-19 21:25:54,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,181 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,181 INFO L186 Difference]: Start difference. First operand has 263 places, 270 transitions, 655 flow. Second operand 3 states and 790 transitions. [2022-07-19 21:25:54,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 278 transitions, 723 flow [2022-07-19 21:25:54,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 278 transitions, 717 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-07-19 21:25:54,187 INFO L242 Difference]: Finished difference. Result has 262 places, 274 transitions, 697 flow [2022-07-19 21:25:54,187 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=697, PETRI_PLACES=262, PETRI_TRANSITIONS=274} [2022-07-19 21:25:54,189 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 13 predicate places. [2022-07-19 21:25:54,189 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 274 transitions, 697 flow [2022-07-19 21:25:54,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,190 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:54,190 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:54,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:25:54,190 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:54,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:54,191 INFO L85 PathProgramCache]: Analyzing trace with hash 408976517, now seen corresponding path program 2 times [2022-07-19 21:25:54,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:54,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122972677] [2022-07-19 21:25:54,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:54,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:54,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:54,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:54,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122972677] [2022-07-19 21:25:54,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122972677] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:54,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:54,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:25:54,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315137044] [2022-07-19 21:25:54,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:54,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:25:54,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:54,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:25:54,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:25:54,242 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 278 [2022-07-19 21:25:54,243 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 274 transitions, 697 flow. Second operand has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,244 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:54,244 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 278 [2022-07-19 21:25:54,244 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:54,455 INFO L129 PetriNetUnfolder]: 151/2281 cut-off events. [2022-07-19 21:25:54,455 INFO L130 PetriNetUnfolder]: For 223/268 co-relation queries the response was YES. [2022-07-19 21:25:54,463 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2844 conditions, 2281 events. 151/2281 cut-off events. For 223/268 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 21128 event pairs, 26 based on Foata normal form. 28/2132 useless extension candidates. Maximal degree in co-relation 2111. Up to 100 conditions per place. [2022-07-19 21:25:54,469 INFO L132 encePairwiseOnDemand]: 270/278 looper letters, 24 selfloop transitions, 4 changer transitions 0/282 dead transitions. [2022-07-19 21:25:54,469 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 282 transitions, 781 flow [2022-07-19 21:25:54,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:25:54,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:25:54,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 790 transitions. [2022-07-19 21:25:54,471 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.947242206235012 [2022-07-19 21:25:54,471 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 790 transitions. [2022-07-19 21:25:54,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 790 transitions. [2022-07-19 21:25:54,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:54,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 790 transitions. [2022-07-19 21:25:54,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,474 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,474 INFO L186 Difference]: Start difference. First operand has 262 places, 274 transitions, 697 flow. Second operand 3 states and 790 transitions. [2022-07-19 21:25:54,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 282 transitions, 781 flow [2022-07-19 21:25:54,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 282 transitions, 769 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:25:54,480 INFO L242 Difference]: Finished difference. Result has 264 places, 278 transitions, 733 flow [2022-07-19 21:25:54,480 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=733, PETRI_PLACES=264, PETRI_TRANSITIONS=278} [2022-07-19 21:25:54,481 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 15 predicate places. [2022-07-19 21:25:54,481 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 278 transitions, 733 flow [2022-07-19 21:25:54,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,482 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:54,482 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:54,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:25:54,482 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:54,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:54,483 INFO L85 PathProgramCache]: Analyzing trace with hash -876327181, now seen corresponding path program 1 times [2022-07-19 21:25:54,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:54,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704554232] [2022-07-19 21:25:54,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:54,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:54,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:54,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:54,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704554232] [2022-07-19 21:25:54,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704554232] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:54,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:54,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:25:54,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104184745] [2022-07-19 21:25:54,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:54,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:25:54,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:54,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:25:54,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:25:54,599 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 278 [2022-07-19 21:25:54,600 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 278 transitions, 733 flow. Second operand has 7 states, 7 states have (on average 249.85714285714286) internal successors, (1749), 7 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,601 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:54,601 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 278 [2022-07-19 21:25:54,601 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:55,082 INFO L129 PetriNetUnfolder]: 597/4157 cut-off events. [2022-07-19 21:25:55,083 INFO L130 PetriNetUnfolder]: For 536/805 co-relation queries the response was YES. [2022-07-19 21:25:55,097 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6066 conditions, 4157 events. 597/4157 cut-off events. For 536/805 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 47066 event pairs, 368 based on Foata normal form. 47/3922 useless extension candidates. Maximal degree in co-relation 4264. Up to 887 conditions per place. [2022-07-19 21:25:55,105 INFO L132 encePairwiseOnDemand]: 266/278 looper letters, 31 selfloop transitions, 15 changer transitions 7/308 dead transitions. [2022-07-19 21:25:55,105 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 308 transitions, 922 flow [2022-07-19 21:25:55,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:25:55,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:25:55,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2276 transitions. [2022-07-19 21:25:55,109 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9096722621902478 [2022-07-19 21:25:55,109 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2276 transitions. [2022-07-19 21:25:55,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2276 transitions. [2022-07-19 21:25:55,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:55,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2276 transitions. [2022-07-19 21:25:55,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 252.88888888888889) internal successors, (2276), 9 states have internal predecessors, (2276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,116 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,117 INFO L186 Difference]: Start difference. First operand has 264 places, 278 transitions, 733 flow. Second operand 9 states and 2276 transitions. [2022-07-19 21:25:55,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 308 transitions, 922 flow [2022-07-19 21:25:55,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 308 transitions, 910 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-07-19 21:25:55,122 INFO L242 Difference]: Finished difference. Result has 278 places, 290 transitions, 831 flow [2022-07-19 21:25:55,123 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=831, PETRI_PLACES=278, PETRI_TRANSITIONS=290} [2022-07-19 21:25:55,124 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 29 predicate places. [2022-07-19 21:25:55,125 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 290 transitions, 831 flow [2022-07-19 21:25:55,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 249.85714285714286) internal successors, (1749), 7 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,125 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:55,126 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:55,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:25:55,126 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:55,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:55,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1337683571, now seen corresponding path program 2 times [2022-07-19 21:25:55,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:55,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172654603] [2022-07-19 21:25:55,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:55,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:55,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:55,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:55,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172654603] [2022-07-19 21:25:55,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172654603] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:55,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:55,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:25:55,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216082298] [2022-07-19 21:25:55,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:55,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:25:55,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:55,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:25:55,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:25:55,187 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 278 [2022-07-19 21:25:55,188 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 290 transitions, 831 flow. Second operand has 7 states, 7 states have (on average 253.28571428571428) internal successors, (1773), 7 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,188 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:55,189 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 278 [2022-07-19 21:25:55,189 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:55,480 INFO L129 PetriNetUnfolder]: 267/2493 cut-off events. [2022-07-19 21:25:55,480 INFO L130 PetriNetUnfolder]: For 565/678 co-relation queries the response was YES. [2022-07-19 21:25:55,492 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4041 conditions, 2493 events. 267/2493 cut-off events. For 565/678 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 26436 event pairs, 107 based on Foata normal form. 3/2328 useless extension candidates. Maximal degree in co-relation 4002. Up to 339 conditions per place. [2022-07-19 21:25:55,496 INFO L132 encePairwiseOnDemand]: 270/278 looper letters, 17 selfloop transitions, 7 changer transitions 20/304 dead transitions. [2022-07-19 21:25:55,496 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 304 transitions, 952 flow [2022-07-19 21:25:55,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:25:55,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:25:55,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2296 transitions. [2022-07-19 21:25:55,500 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9176658673061551 [2022-07-19 21:25:55,500 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2296 transitions. [2022-07-19 21:25:55,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2296 transitions. [2022-07-19 21:25:55,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:55,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2296 transitions. [2022-07-19 21:25:55,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 255.11111111111111) internal successors, (2296), 9 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,507 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,507 INFO L186 Difference]: Start difference. First operand has 278 places, 290 transitions, 831 flow. Second operand 9 states and 2296 transitions. [2022-07-19 21:25:55,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 304 transitions, 952 flow [2022-07-19 21:25:55,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 304 transitions, 946 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-07-19 21:25:55,514 INFO L242 Difference]: Finished difference. Result has 285 places, 284 transitions, 819 flow [2022-07-19 21:25:55,514 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=819, PETRI_PLACES=285, PETRI_TRANSITIONS=284} [2022-07-19 21:25:55,515 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 36 predicate places. [2022-07-19 21:25:55,515 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 284 transitions, 819 flow [2022-07-19 21:25:55,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 253.28571428571428) internal successors, (1773), 7 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,516 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:55,516 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:55,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:25:55,516 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:55,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:55,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1671544335, now seen corresponding path program 1 times [2022-07-19 21:25:55,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:55,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724317054] [2022-07-19 21:25:55,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:55,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:55,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:55,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:55,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724317054] [2022-07-19 21:25:55,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724317054] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:55,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:55,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:25:55,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311756252] [2022-07-19 21:25:55,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:55,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:25:55,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:55,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:25:55,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:25:55,601 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 278 [2022-07-19 21:25:55,603 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 284 transitions, 819 flow. Second operand has 8 states, 8 states have (on average 249.5) internal successors, (1996), 8 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,603 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:55,603 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 278 [2022-07-19 21:25:55,603 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:55,991 INFO L129 PetriNetUnfolder]: 514/3416 cut-off events. [2022-07-19 21:25:55,992 INFO L130 PetriNetUnfolder]: For 1572/1735 co-relation queries the response was YES. [2022-07-19 21:25:56,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6154 conditions, 3416 events. 514/3416 cut-off events. For 1572/1735 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 37551 event pairs, 285 based on Foata normal form. 22/3167 useless extension candidates. Maximal degree in co-relation 6123. Up to 663 conditions per place. [2022-07-19 21:25:56,015 INFO L132 encePairwiseOnDemand]: 268/278 looper letters, 36 selfloop transitions, 7 changer transitions 18/313 dead transitions. [2022-07-19 21:25:56,015 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 313 transitions, 1063 flow [2022-07-19 21:25:56,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:25:56,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:25:56,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2522 transitions. [2022-07-19 21:25:56,020 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9071942446043165 [2022-07-19 21:25:56,020 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2522 transitions. [2022-07-19 21:25:56,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2522 transitions. [2022-07-19 21:25:56,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:56,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2522 transitions. [2022-07-19 21:25:56,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 252.2) internal successors, (2522), 10 states have internal predecessors, (2522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 278.0) internal successors, (3058), 11 states have internal predecessors, (3058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,038 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 278.0) internal successors, (3058), 11 states have internal predecessors, (3058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,039 INFO L186 Difference]: Start difference. First operand has 285 places, 284 transitions, 819 flow. Second operand 10 states and 2522 transitions. [2022-07-19 21:25:56,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 313 transitions, 1063 flow [2022-07-19 21:25:56,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 313 transitions, 1056 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-07-19 21:25:56,048 INFO L242 Difference]: Finished difference. Result has 295 places, 285 transitions, 859 flow [2022-07-19 21:25:56,049 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=859, PETRI_PLACES=295, PETRI_TRANSITIONS=285} [2022-07-19 21:25:56,049 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 46 predicate places. [2022-07-19 21:25:56,049 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 285 transitions, 859 flow [2022-07-19 21:25:56,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 249.5) internal successors, (1996), 8 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,050 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:56,051 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:56,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:25:56,051 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:56,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:56,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1283281750, now seen corresponding path program 1 times [2022-07-19 21:25:56,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:56,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442442104] [2022-07-19 21:25:56,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:56,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:56,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:56,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:56,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442442104] [2022-07-19 21:25:56,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442442104] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:56,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:56,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:25:56,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802723602] [2022-07-19 21:25:56,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:56,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:25:56,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:56,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:25:56,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:25:56,130 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 278 [2022-07-19 21:25:56,131 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 285 transitions, 859 flow. Second operand has 7 states, 7 states have (on average 253.28571428571428) internal successors, (1773), 7 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,132 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:56,132 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 278 [2022-07-19 21:25:56,132 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:56,384 INFO L129 PetriNetUnfolder]: 125/1855 cut-off events. [2022-07-19 21:25:56,384 INFO L130 PetriNetUnfolder]: For 352/449 co-relation queries the response was YES. [2022-07-19 21:25:56,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2735 conditions, 1855 events. 125/1855 cut-off events. For 352/449 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 18027 event pairs, 22 based on Foata normal form. 2/1719 useless extension candidates. Maximal degree in co-relation 2704. Up to 78 conditions per place. [2022-07-19 21:25:56,403 INFO L132 encePairwiseOnDemand]: 270/278 looper letters, 18 selfloop transitions, 2 changer transitions 17/305 dead transitions. [2022-07-19 21:25:56,403 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 305 transitions, 1002 flow [2022-07-19 21:25:56,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:25:56,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:25:56,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2297 transitions. [2022-07-19 21:25:56,407 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9180655475619505 [2022-07-19 21:25:56,407 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2297 transitions. [2022-07-19 21:25:56,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2297 transitions. [2022-07-19 21:25:56,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:56,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2297 transitions. [2022-07-19 21:25:56,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 255.22222222222223) internal successors, (2297), 9 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,414 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,415 INFO L186 Difference]: Start difference. First operand has 295 places, 285 transitions, 859 flow. Second operand 9 states and 2297 transitions. [2022-07-19 21:25:56,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 305 transitions, 1002 flow [2022-07-19 21:25:56,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 305 transitions, 979 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-07-19 21:25:56,422 INFO L242 Difference]: Finished difference. Result has 302 places, 286 transitions, 865 flow [2022-07-19 21:25:56,422 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=865, PETRI_PLACES=302, PETRI_TRANSITIONS=286} [2022-07-19 21:25:56,423 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 53 predicate places. [2022-07-19 21:25:56,423 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 286 transitions, 865 flow [2022-07-19 21:25:56,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 253.28571428571428) internal successors, (1773), 7 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,424 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:56,424 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:56,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 21:25:56,424 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:56,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:56,459 INFO L85 PathProgramCache]: Analyzing trace with hash -14993302, now seen corresponding path program 1 times [2022-07-19 21:25:56,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:56,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294528583] [2022-07-19 21:25:56,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:56,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:56,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:56,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:56,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:56,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294528583] [2022-07-19 21:25:56,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294528583] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:56,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:56,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:25:56,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529028450] [2022-07-19 21:25:56,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:56,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:25:56,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:56,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:25:56,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:25:56,486 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 278 [2022-07-19 21:25:56,486 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 286 transitions, 865 flow. Second operand has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,486 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:56,487 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 278 [2022-07-19 21:25:56,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:56,661 INFO L129 PetriNetUnfolder]: 104/2029 cut-off events. [2022-07-19 21:25:56,661 INFO L130 PetriNetUnfolder]: For 344/449 co-relation queries the response was YES. [2022-07-19 21:25:56,675 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2917 conditions, 2029 events. 104/2029 cut-off events. For 344/449 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 19656 event pairs, 19 based on Foata normal form. 3/1878 useless extension candidates. Maximal degree in co-relation 2882. Up to 90 conditions per place. [2022-07-19 21:25:56,680 INFO L132 encePairwiseOnDemand]: 272/278 looper letters, 15 selfloop transitions, 4 changer transitions 0/293 dead transitions. [2022-07-19 21:25:56,680 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 293 transitions, 922 flow [2022-07-19 21:25:56,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:25:56,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:25:56,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 795 transitions. [2022-07-19 21:25:56,682 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9532374100719424 [2022-07-19 21:25:56,682 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 795 transitions. [2022-07-19 21:25:56,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 795 transitions. [2022-07-19 21:25:56,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:56,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 795 transitions. [2022-07-19 21:25:56,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,685 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,685 INFO L186 Difference]: Start difference. First operand has 302 places, 286 transitions, 865 flow. Second operand 3 states and 795 transitions. [2022-07-19 21:25:56,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 293 transitions, 922 flow [2022-07-19 21:25:56,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 293 transitions, 909 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-07-19 21:25:56,691 INFO L242 Difference]: Finished difference. Result has 295 places, 288 transitions, 880 flow [2022-07-19 21:25:56,692 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=880, PETRI_PLACES=295, PETRI_TRANSITIONS=288} [2022-07-19 21:25:56,692 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 46 predicate places. [2022-07-19 21:25:56,692 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 288 transitions, 880 flow [2022-07-19 21:25:56,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,693 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:56,693 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:56,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 21:25:56,693 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:56,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:56,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1202030338, now seen corresponding path program 1 times [2022-07-19 21:25:56,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:56,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516610302] [2022-07-19 21:25:56,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:56,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:56,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:56,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:56,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516610302] [2022-07-19 21:25:56,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516610302] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:56,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:56,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:25:56,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123196841] [2022-07-19 21:25:56,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:56,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:25:56,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:56,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:25:56,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:25:56,720 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 278 [2022-07-19 21:25:56,720 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 288 transitions, 880 flow. Second operand has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,721 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:56,721 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 278 [2022-07-19 21:25:56,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:57,109 INFO L129 PetriNetUnfolder]: 201/3760 cut-off events. [2022-07-19 21:25:57,110 INFO L130 PetriNetUnfolder]: For 932/1118 co-relation queries the response was YES. [2022-07-19 21:25:57,139 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5429 conditions, 3760 events. 201/3760 cut-off events. For 932/1118 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 43969 event pairs, 48 based on Foata normal form. 7/3497 useless extension candidates. Maximal degree in co-relation 5262. Up to 130 conditions per place. [2022-07-19 21:25:57,148 INFO L132 encePairwiseOnDemand]: 270/278 looper letters, 17 selfloop transitions, 5 changer transitions 0/296 dead transitions. [2022-07-19 21:25:57,148 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 296 transitions, 945 flow [2022-07-19 21:25:57,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:25:57,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:25:57,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 793 transitions. [2022-07-19 21:25:57,150 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9508393285371702 [2022-07-19 21:25:57,150 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 793 transitions. [2022-07-19 21:25:57,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 793 transitions. [2022-07-19 21:25:57,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:57,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 793 transitions. [2022-07-19 21:25:57,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,153 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,153 INFO L186 Difference]: Start difference. First operand has 295 places, 288 transitions, 880 flow. Second operand 3 states and 793 transitions. [2022-07-19 21:25:57,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 296 transitions, 945 flow [2022-07-19 21:25:57,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 296 transitions, 937 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:25:57,163 INFO L242 Difference]: Finished difference. Result has 297 places, 291 transitions, 910 flow [2022-07-19 21:25:57,163 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=910, PETRI_PLACES=297, PETRI_TRANSITIONS=291} [2022-07-19 21:25:57,164 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 48 predicate places. [2022-07-19 21:25:57,164 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 291 transitions, 910 flow [2022-07-19 21:25:57,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,164 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:57,164 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:57,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 21:25:57,165 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:57,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:57,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1270908768, now seen corresponding path program 2 times [2022-07-19 21:25:57,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:57,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457210496] [2022-07-19 21:25:57,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:57,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:57,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:57,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:57,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457210496] [2022-07-19 21:25:57,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457210496] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:57,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:57,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:25:57,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769717081] [2022-07-19 21:25:57,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:57,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:25:57,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:57,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:25:57,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:25:57,193 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 278 [2022-07-19 21:25:57,193 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 291 transitions, 910 flow. Second operand has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,193 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:57,194 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 278 [2022-07-19 21:25:57,194 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:57,519 INFO L129 PetriNetUnfolder]: 154/3010 cut-off events. [2022-07-19 21:25:57,520 INFO L130 PetriNetUnfolder]: For 1022/1237 co-relation queries the response was YES. [2022-07-19 21:25:57,535 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4519 conditions, 3010 events. 154/3010 cut-off events. For 1022/1237 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 32087 event pairs, 44 based on Foata normal form. 25/2830 useless extension candidates. Maximal degree in co-relation 4342. Up to 111 conditions per place. [2022-07-19 21:25:57,540 INFO L132 encePairwiseOnDemand]: 272/278 looper letters, 22 selfloop transitions, 3 changer transitions 0/299 dead transitions. [2022-07-19 21:25:57,540 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 299 transitions, 987 flow [2022-07-19 21:25:57,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:25:57,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:25:57,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 793 transitions. [2022-07-19 21:25:57,542 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9508393285371702 [2022-07-19 21:25:57,542 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 793 transitions. [2022-07-19 21:25:57,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 793 transitions. [2022-07-19 21:25:57,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:57,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 793 transitions. [2022-07-19 21:25:57,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,545 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,545 INFO L186 Difference]: Start difference. First operand has 297 places, 291 transitions, 910 flow. Second operand 3 states and 793 transitions. [2022-07-19 21:25:57,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 299 transitions, 987 flow [2022-07-19 21:25:57,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 299 transitions, 977 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:25:57,553 INFO L242 Difference]: Finished difference. Result has 299 places, 294 transitions, 936 flow [2022-07-19 21:25:57,553 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=936, PETRI_PLACES=299, PETRI_TRANSITIONS=294} [2022-07-19 21:25:57,553 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 50 predicate places. [2022-07-19 21:25:57,554 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 294 transitions, 936 flow [2022-07-19 21:25:57,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,554 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:57,554 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:57,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 21:25:57,554 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:57,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:57,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1750302656, now seen corresponding path program 1 times [2022-07-19 21:25:57,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:57,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866605808] [2022-07-19 21:25:57,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:57,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:57,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:57,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:57,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866605808] [2022-07-19 21:25:57,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866605808] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:57,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:57,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:25:57,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259643660] [2022-07-19 21:25:57,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:57,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:25:57,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:57,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:25:57,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:25:57,578 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 278 [2022-07-19 21:25:57,579 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 294 transitions, 936 flow. Second operand has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,579 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:57,579 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 278 [2022-07-19 21:25:57,579 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:57,809 INFO L129 PetriNetUnfolder]: 126/2616 cut-off events. [2022-07-19 21:25:57,809 INFO L130 PetriNetUnfolder]: For 603/762 co-relation queries the response was YES. [2022-07-19 21:25:57,828 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3832 conditions, 2616 events. 126/2616 cut-off events. For 603/762 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 25825 event pairs, 29 based on Foata normal form. 3/2437 useless extension candidates. Maximal degree in co-relation 3681. Up to 116 conditions per place. [2022-07-19 21:25:57,832 INFO L132 encePairwiseOnDemand]: 274/278 looper letters, 19 selfloop transitions, 2 changer transitions 0/301 dead transitions. [2022-07-19 21:25:57,832 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 301 transitions, 1001 flow [2022-07-19 21:25:57,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:25:57,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:25:57,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 795 transitions. [2022-07-19 21:25:57,835 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9532374100719424 [2022-07-19 21:25:57,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 795 transitions. [2022-07-19 21:25:57,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 795 transitions. [2022-07-19 21:25:57,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:57,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 795 transitions. [2022-07-19 21:25:57,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,838 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,838 INFO L186 Difference]: Start difference. First operand has 299 places, 294 transitions, 936 flow. Second operand 3 states and 795 transitions. [2022-07-19 21:25:57,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 301 transitions, 1001 flow [2022-07-19 21:25:57,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 301 transitions, 992 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-07-19 21:25:57,845 INFO L242 Difference]: Finished difference. Result has 302 places, 296 transitions, 951 flow [2022-07-19 21:25:57,845 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=951, PETRI_PLACES=302, PETRI_TRANSITIONS=296} [2022-07-19 21:25:57,846 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 53 predicate places. [2022-07-19 21:25:57,846 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 296 transitions, 951 flow [2022-07-19 21:25:57,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,846 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:57,847 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:57,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 21:25:57,847 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:57,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:57,847 INFO L85 PathProgramCache]: Analyzing trace with hash 188483036, now seen corresponding path program 1 times [2022-07-19 21:25:57,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:57,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847644712] [2022-07-19 21:25:57,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:57,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:57,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:57,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:57,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847644712] [2022-07-19 21:25:57,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847644712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:57,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:57,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:25:57,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196690915] [2022-07-19 21:25:57,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:57,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:25:57,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:57,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:25:57,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:25:57,934 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 278 [2022-07-19 21:25:57,935 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 296 transitions, 951 flow. Second operand has 10 states, 10 states have (on average 243.4) internal successors, (2434), 10 states have internal predecessors, (2434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,935 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:57,935 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 278 [2022-07-19 21:25:57,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:58,897 INFO L129 PetriNetUnfolder]: 1357/6298 cut-off events. [2022-07-19 21:25:58,897 INFO L130 PetriNetUnfolder]: For 6032/7110 co-relation queries the response was YES. [2022-07-19 21:25:58,945 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13577 conditions, 6298 events. 1357/6298 cut-off events. For 6032/7110 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 73856 event pairs, 718 based on Foata normal form. 76/5790 useless extension candidates. Maximal degree in co-relation 12234. Up to 1531 conditions per place. [2022-07-19 21:25:58,962 INFO L132 encePairwiseOnDemand]: 263/278 looper letters, 87 selfloop transitions, 19 changer transitions 12/375 dead transitions. [2022-07-19 21:25:58,962 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 375 transitions, 1594 flow [2022-07-19 21:25:58,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:25:58,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:25:58,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4438 transitions. [2022-07-19 21:25:58,969 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8868904876099121 [2022-07-19 21:25:58,970 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4438 transitions. [2022-07-19 21:25:58,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4438 transitions. [2022-07-19 21:25:58,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:58,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4438 transitions. [2022-07-19 21:25:58,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 246.55555555555554) internal successors, (4438), 18 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:58,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 278.0) internal successors, (5282), 19 states have internal predecessors, (5282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:58,983 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 278.0) internal successors, (5282), 19 states have internal predecessors, (5282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:58,983 INFO L186 Difference]: Start difference. First operand has 302 places, 296 transitions, 951 flow. Second operand 18 states and 4438 transitions. [2022-07-19 21:25:58,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 375 transitions, 1594 flow [2022-07-19 21:25:59,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 375 transitions, 1588 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-19 21:25:59,006 INFO L242 Difference]: Finished difference. Result has 329 places, 307 transitions, 1092 flow [2022-07-19 21:25:59,007 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1092, PETRI_PLACES=329, PETRI_TRANSITIONS=307} [2022-07-19 21:25:59,008 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 80 predicate places. [2022-07-19 21:25:59,008 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 307 transitions, 1092 flow [2022-07-19 21:25:59,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 243.4) internal successors, (2434), 10 states have internal predecessors, (2434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,008 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:59,010 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:59,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 21:25:59,010 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:59,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:59,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1504883712, now seen corresponding path program 1 times [2022-07-19 21:25:59,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:59,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776683518] [2022-07-19 21:25:59,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:59,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:59,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:59,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:59,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776683518] [2022-07-19 21:25:59,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776683518] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:59,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:59,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:25:59,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225266606] [2022-07-19 21:25:59,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:59,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:25:59,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:59,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:25:59,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:25:59,051 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 278 [2022-07-19 21:25:59,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 307 transitions, 1092 flow. Second operand has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:59,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 278 [2022-07-19 21:25:59,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:59,649 INFO L129 PetriNetUnfolder]: 223/5999 cut-off events. [2022-07-19 21:25:59,650 INFO L130 PetriNetUnfolder]: For 2667/2986 co-relation queries the response was YES. [2022-07-19 21:25:59,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9679 conditions, 5999 events. 223/5999 cut-off events. For 2667/2986 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 73313 event pairs, 94 based on Foata normal form. 5/5631 useless extension candidates. Maximal degree in co-relation 9615. Up to 290 conditions per place. [2022-07-19 21:25:59,695 INFO L132 encePairwiseOnDemand]: 268/278 looper letters, 18 selfloop transitions, 6 changer transitions 5/315 dead transitions. [2022-07-19 21:25:59,696 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 315 transitions, 1160 flow [2022-07-19 21:25:59,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:25:59,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:25:59,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 790 transitions. [2022-07-19 21:25:59,697 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.947242206235012 [2022-07-19 21:25:59,697 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 790 transitions. [2022-07-19 21:25:59,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 790 transitions. [2022-07-19 21:25:59,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:59,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 790 transitions. [2022-07-19 21:25:59,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,700 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,700 INFO L186 Difference]: Start difference. First operand has 329 places, 307 transitions, 1092 flow. Second operand 3 states and 790 transitions. [2022-07-19 21:25:59,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 315 transitions, 1160 flow [2022-07-19 21:25:59,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 315 transitions, 1129 flow, removed 8 selfloop flow, removed 9 redundant places. [2022-07-19 21:25:59,729 INFO L242 Difference]: Finished difference. Result has 322 places, 306 transitions, 1084 flow [2022-07-19 21:25:59,729 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=1061, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1084, PETRI_PLACES=322, PETRI_TRANSITIONS=306} [2022-07-19 21:25:59,730 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 73 predicate places. [2022-07-19 21:25:59,730 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 306 transitions, 1084 flow [2022-07-19 21:25:59,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,730 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:59,730 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:59,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 21:25:59,731 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:25:59,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:59,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1011700246, now seen corresponding path program 1 times [2022-07-19 21:25:59,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:59,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891657597] [2022-07-19 21:25:59,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:59,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:59,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:59,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:59,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891657597] [2022-07-19 21:25:59,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891657597] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:59,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:59,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:25:59,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903123175] [2022-07-19 21:25:59,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:59,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:25:59,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:59,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:25:59,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:25:59,753 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 278 [2022-07-19 21:25:59,753 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 306 transitions, 1084 flow. Second operand has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,753 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:59,753 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 278 [2022-07-19 21:25:59,753 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:00,149 INFO L129 PetriNetUnfolder]: 187/4582 cut-off events. [2022-07-19 21:26:00,149 INFO L130 PetriNetUnfolder]: For 1979/2592 co-relation queries the response was YES. [2022-07-19 21:26:00,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7396 conditions, 4582 events. 187/4582 cut-off events. For 1979/2592 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 52334 event pairs, 60 based on Foata normal form. 48/4399 useless extension candidates. Maximal degree in co-relation 7078. Up to 270 conditions per place. [2022-07-19 21:26:00,189 INFO L132 encePairwiseOnDemand]: 270/278 looper letters, 24 selfloop transitions, 4 changer transitions 22/314 dead transitions. [2022-07-19 21:26:00,189 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 314 transitions, 1168 flow [2022-07-19 21:26:00,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:26:00,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:26:00,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 790 transitions. [2022-07-19 21:26:00,191 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.947242206235012 [2022-07-19 21:26:00,191 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 790 transitions. [2022-07-19 21:26:00,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 790 transitions. [2022-07-19 21:26:00,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:00,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 790 transitions. [2022-07-19 21:26:00,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,194 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,194 INFO L186 Difference]: Start difference. First operand has 322 places, 306 transitions, 1084 flow. Second operand 3 states and 790 transitions. [2022-07-19 21:26:00,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 314 transitions, 1168 flow [2022-07-19 21:26:00,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 314 transitions, 1152 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-07-19 21:26:00,212 INFO L242 Difference]: Finished difference. Result has 319 places, 288 transitions, 957 flow [2022-07-19 21:26:00,212 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=957, PETRI_PLACES=319, PETRI_TRANSITIONS=288} [2022-07-19 21:26:00,212 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 70 predicate places. [2022-07-19 21:26:00,213 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 288 transitions, 957 flow [2022-07-19 21:26:00,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,213 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:00,213 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:00,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 21:26:00,213 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:00,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:00,214 INFO L85 PathProgramCache]: Analyzing trace with hash -589076536, now seen corresponding path program 1 times [2022-07-19 21:26:00,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:00,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169489885] [2022-07-19 21:26:00,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:00,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:00,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:00,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:00,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169489885] [2022-07-19 21:26:00,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169489885] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:00,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:00,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:26:00,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326721445] [2022-07-19 21:26:00,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:00,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:26:00,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:00,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:26:00,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:26:00,269 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 278 [2022-07-19 21:26:00,271 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 288 transitions, 957 flow. Second operand has 9 states, 9 states have (on average 247.22222222222223) internal successors, (2225), 9 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,271 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:00,271 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 278 [2022-07-19 21:26:00,271 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:00,685 INFO L129 PetriNetUnfolder]: 355/3701 cut-off events. [2022-07-19 21:26:00,686 INFO L130 PetriNetUnfolder]: For 1824/2432 co-relation queries the response was YES. [2022-07-19 21:26:00,717 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6613 conditions, 3701 events. 355/3701 cut-off events. For 1824/2432 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 41345 event pairs, 104 based on Foata normal form. 16/3498 useless extension candidates. Maximal degree in co-relation 6576. Up to 423 conditions per place. [2022-07-19 21:26:00,723 INFO L132 encePairwiseOnDemand]: 265/278 looper letters, 39 selfloop transitions, 13 changer transitions 9/311 dead transitions. [2022-07-19 21:26:00,723 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 311 transitions, 1169 flow [2022-07-19 21:26:00,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:26:00,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:26:00,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2253 transitions. [2022-07-19 21:26:00,727 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9004796163069544 [2022-07-19 21:26:00,727 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2253 transitions. [2022-07-19 21:26:00,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2253 transitions. [2022-07-19 21:26:00,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:00,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2253 transitions. [2022-07-19 21:26:00,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 250.33333333333334) internal successors, (2253), 9 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,735 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,735 INFO L186 Difference]: Start difference. First operand has 319 places, 288 transitions, 957 flow. Second operand 9 states and 2253 transitions. [2022-07-19 21:26:00,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 311 transitions, 1169 flow [2022-07-19 21:26:00,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 311 transitions, 1127 flow, removed 17 selfloop flow, removed 6 redundant places. [2022-07-19 21:26:00,751 INFO L242 Difference]: Finished difference. Result has 315 places, 296 transitions, 1030 flow [2022-07-19 21:26:00,751 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=919, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1030, PETRI_PLACES=315, PETRI_TRANSITIONS=296} [2022-07-19 21:26:00,752 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 66 predicate places. [2022-07-19 21:26:00,752 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 296 transitions, 1030 flow [2022-07-19 21:26:00,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 247.22222222222223) internal successors, (2225), 9 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,753 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:00,753 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:00,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 21:26:00,753 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:00,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:00,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1255278944, now seen corresponding path program 1 times [2022-07-19 21:26:00,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:00,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921865171] [2022-07-19 21:26:00,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:00,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:00,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:00,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:00,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921865171] [2022-07-19 21:26:00,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921865171] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:00,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:00,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:26:00,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401473415] [2022-07-19 21:26:00,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:00,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:26:00,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:00,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:26:00,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:26:00,808 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 278 [2022-07-19 21:26:00,809 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 296 transitions, 1030 flow. Second operand has 9 states, 9 states have (on average 247.22222222222223) internal successors, (2225), 9 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,810 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:00,810 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 278 [2022-07-19 21:26:00,810 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:01,302 INFO L129 PetriNetUnfolder]: 509/3750 cut-off events. [2022-07-19 21:26:01,303 INFO L130 PetriNetUnfolder]: For 1051/1210 co-relation queries the response was YES. [2022-07-19 21:26:01,333 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6390 conditions, 3750 events. 509/3750 cut-off events. For 1051/1210 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 44107 event pairs, 359 based on Foata normal form. 3/3392 useless extension candidates. Maximal degree in co-relation 6350. Up to 1267 conditions per place. [2022-07-19 21:26:01,338 INFO L132 encePairwiseOnDemand]: 266/278 looper letters, 31 selfloop transitions, 9 changer transitions 17/326 dead transitions. [2022-07-19 21:26:01,338 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 326 transitions, 1221 flow [2022-07-19 21:26:01,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:26:01,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:26:01,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3239 transitions. [2022-07-19 21:26:01,342 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8962368566685114 [2022-07-19 21:26:01,342 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3239 transitions. [2022-07-19 21:26:01,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3239 transitions. [2022-07-19 21:26:01,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:01,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3239 transitions. [2022-07-19 21:26:01,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 249.15384615384616) internal successors, (3239), 13 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 278.0) internal successors, (3892), 14 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,351 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 278.0) internal successors, (3892), 14 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,351 INFO L186 Difference]: Start difference. First operand has 315 places, 296 transitions, 1030 flow. Second operand 13 states and 3239 transitions. [2022-07-19 21:26:01,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 326 transitions, 1221 flow [2022-07-19 21:26:01,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 326 transitions, 1188 flow, removed 14 selfloop flow, removed 3 redundant places. [2022-07-19 21:26:01,360 INFO L242 Difference]: Finished difference. Result has 333 places, 300 transitions, 1053 flow [2022-07-19 21:26:01,360 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1053, PETRI_PLACES=333, PETRI_TRANSITIONS=300} [2022-07-19 21:26:01,360 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 84 predicate places. [2022-07-19 21:26:01,360 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 300 transitions, 1053 flow [2022-07-19 21:26:01,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 247.22222222222223) internal successors, (2225), 9 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,361 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:01,361 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:01,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 21:26:01,362 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:01,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:01,362 INFO L85 PathProgramCache]: Analyzing trace with hash -87991940, now seen corresponding path program 1 times [2022-07-19 21:26:01,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:01,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326995519] [2022-07-19 21:26:01,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:01,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:01,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:01,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:01,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326995519] [2022-07-19 21:26:01,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326995519] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:01,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:01,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:01,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192061381] [2022-07-19 21:26:01,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:01,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:01,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:01,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:01,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:01,433 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 278 [2022-07-19 21:26:01,434 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 300 transitions, 1053 flow. Second operand has 10 states, 10 states have (on average 243.4) internal successors, (2434), 10 states have internal predecessors, (2434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,435 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:01,435 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 278 [2022-07-19 21:26:01,435 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:02,276 INFO L129 PetriNetUnfolder]: 1085/7210 cut-off events. [2022-07-19 21:26:02,277 INFO L130 PetriNetUnfolder]: For 8429/9160 co-relation queries the response was YES. [2022-07-19 21:26:02,336 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15315 conditions, 7210 events. 1085/7210 cut-off events. For 8429/9160 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 88983 event pairs, 758 based on Foata normal form. 154/6774 useless extension candidates. Maximal degree in co-relation 15266. Up to 1515 conditions per place. [2022-07-19 21:26:02,346 INFO L132 encePairwiseOnDemand]: 264/278 looper letters, 56 selfloop transitions, 11 changer transitions 32/368 dead transitions. [2022-07-19 21:26:02,346 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 368 transitions, 1670 flow [2022-07-19 21:26:02,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:26:02,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-19 21:26:02,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3451 transitions. [2022-07-19 21:26:02,350 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8866906474820144 [2022-07-19 21:26:02,350 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3451 transitions. [2022-07-19 21:26:02,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3451 transitions. [2022-07-19 21:26:02,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:02,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3451 transitions. [2022-07-19 21:26:02,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 246.5) internal successors, (3451), 14 states have internal predecessors, (3451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 278.0) internal successors, (4170), 15 states have internal predecessors, (4170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,358 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 278.0) internal successors, (4170), 15 states have internal predecessors, (4170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,358 INFO L186 Difference]: Start difference. First operand has 333 places, 300 transitions, 1053 flow. Second operand 14 states and 3451 transitions. [2022-07-19 21:26:02,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 368 transitions, 1670 flow [2022-07-19 21:26:02,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 368 transitions, 1659 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-07-19 21:26:02,397 INFO L242 Difference]: Finished difference. Result has 347 places, 308 transitions, 1123 flow [2022-07-19 21:26:02,398 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1123, PETRI_PLACES=347, PETRI_TRANSITIONS=308} [2022-07-19 21:26:02,398 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 98 predicate places. [2022-07-19 21:26:02,398 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 308 transitions, 1123 flow [2022-07-19 21:26:02,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 243.4) internal successors, (2434), 10 states have internal predecessors, (2434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,399 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:02,399 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:02,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 21:26:02,399 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:02,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:02,399 INFO L85 PathProgramCache]: Analyzing trace with hash 489008084, now seen corresponding path program 1 times [2022-07-19 21:26:02,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:02,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92716959] [2022-07-19 21:26:02,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:02,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:02,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:02,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:02,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92716959] [2022-07-19 21:26:02,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92716959] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:02,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:02,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-07-19 21:26:02,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136315777] [2022-07-19 21:26:02,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:02,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-19 21:26:02,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:02,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-19 21:26:02,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2022-07-19 21:26:02,880 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 278 [2022-07-19 21:26:02,883 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 308 transitions, 1123 flow. Second operand has 34 states, 34 states have (on average 180.3235294117647) internal successors, (6131), 34 states have internal predecessors, (6131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,883 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:02,883 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 278 [2022-07-19 21:26:02,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:54,543 INFO L129 PetriNetUnfolder]: 68419/144617 cut-off events. [2022-07-19 21:26:54,543 INFO L130 PetriNetUnfolder]: For 151166/152332 co-relation queries the response was YES. [2022-07-19 21:26:56,975 INFO L84 FinitePrefix]: Finished finitePrefix Result has 369093 conditions, 144617 events. 68419/144617 cut-off events. For 151166/152332 co-relation queries the response was YES. Maximal size of possible extension queue 2465. Compared 1663257 event pairs, 31066 based on Foata normal form. 661/141309 useless extension candidates. Maximal degree in co-relation 369036. Up to 53274 conditions per place. [2022-07-19 21:26:57,263 INFO L132 encePairwiseOnDemand]: 230/278 looper letters, 1426 selfloop transitions, 293 changer transitions 827/2729 dead transitions. [2022-07-19 21:26:57,264 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 713 places, 2729 transitions, 16034 flow [2022-07-19 21:26:57,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 369 states. [2022-07-19 21:26:57,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2022-07-19 21:26:57,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 68121 transitions. [2022-07-19 21:26:57,516 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6640638708545359 [2022-07-19 21:26:57,516 INFO L72 ComplementDD]: Start complementDD. Operand 369 states and 68121 transitions. [2022-07-19 21:26:57,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 369 states and 68121 transitions. [2022-07-19 21:26:57,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:57,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 369 states and 68121 transitions. [2022-07-19 21:26:57,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 370 states, 369 states have (on average 184.609756097561) internal successors, (68121), 369 states have internal predecessors, (68121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:57,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 370 states, 370 states have (on average 278.0) internal successors, (102860), 370 states have internal predecessors, (102860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:57,721 INFO L81 ComplementDD]: Finished complementDD. Result has 370 states, 370 states have (on average 278.0) internal successors, (102860), 370 states have internal predecessors, (102860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:57,722 INFO L186 Difference]: Start difference. First operand has 347 places, 308 transitions, 1123 flow. Second operand 369 states and 68121 transitions. [2022-07-19 21:26:57,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 713 places, 2729 transitions, 16034 flow [2022-07-19 21:27:01,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 709 places, 2729 transitions, 16023 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-07-19 21:27:01,156 INFO L242 Difference]: Finished difference. Result has 1066 places, 625 transitions, 4862 flow [2022-07-19 21:27:01,156 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=369, PETRI_FLOW=4862, PETRI_PLACES=1066, PETRI_TRANSITIONS=625} [2022-07-19 21:27:01,157 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 817 predicate places. [2022-07-19 21:27:01,157 INFO L495 AbstractCegarLoop]: Abstraction has has 1066 places, 625 transitions, 4862 flow [2022-07-19 21:27:01,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 180.3235294117647) internal successors, (6131), 34 states have internal predecessors, (6131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:01,158 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:01,158 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:01,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 21:27:01,159 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:01,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:01,159 INFO L85 PathProgramCache]: Analyzing trace with hash 2031754960, now seen corresponding path program 2 times [2022-07-19 21:27:01,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:01,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934100689] [2022-07-19 21:27:01,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:01,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:01,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:01,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:01,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934100689] [2022-07-19 21:27:01,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934100689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:01,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:01,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-07-19 21:27:01,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395361119] [2022-07-19 21:27:01,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:01,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-19 21:27:01,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:01,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-19 21:27:01,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2022-07-19 21:27:01,660 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 278 [2022-07-19 21:27:01,662 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1066 places, 625 transitions, 4862 flow. Second operand has 34 states, 34 states have (on average 180.3235294117647) internal successors, (6131), 34 states have internal predecessors, (6131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:01,662 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:01,662 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 278 [2022-07-19 21:27:01,662 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand