./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c361ebc03d879240d418527d643e8a7b3c7ac084ceb3e66857b21a687a1c7f90 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:00:02,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:00:02,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:00:02,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:00:02,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:00:02,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:00:02,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:00:02,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:00:02,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:00:02,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:00:02,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:00:02,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:00:02,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:00:02,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:00:02,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:00:02,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:00:02,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:00:02,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:00:02,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:00:02,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:00:02,292 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:00:02,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:00:02,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:00:02,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:00:02,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:00:02,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:00:02,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:00:02,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:00:02,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:00:02,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:00:02,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:00:02,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:00:02,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:00:02,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:00:02,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:00:02,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:00:02,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:00:02,308 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:00:02,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:00:02,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:00:02,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:00:02,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:00:02,318 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 09:00:02,349 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:00:02,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:00:02,350 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:00:02,350 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:00:02,351 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:00:02,351 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:00:02,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:00:02,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:00:02,352 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:00:02,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:00:02,353 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 09:00:02,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:00:02,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 09:00:02,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:00:02,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:00:02,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:00:02,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:00:02,361 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 09:00:02,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:00:02,362 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:00:02,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:00:02,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:00:02,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:00:02,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:00:02,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:00:02,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:00:02,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:00:02,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:00:02,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:00:02,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:00:02,364 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:00:02,364 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:00:02,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:00:02,365 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c361ebc03d879240d418527d643e8a7b3c7ac084ceb3e66857b21a687a1c7f90 [2022-07-21 09:00:02,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:00:02,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:00:02,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:00:02,693 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:00:02,694 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:00:02,696 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c [2022-07-21 09:00:02,772 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a52e53c54/75fa5c7431fc483b91911fab606e9672/FLAGf7501cba2 [2022-07-21 09:00:03,183 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:00:03,185 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-sre-symm.wvr.c [2022-07-21 09:00:03,192 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a52e53c54/75fa5c7431fc483b91911fab606e9672/FLAGf7501cba2 [2022-07-21 09:00:03,578 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a52e53c54/75fa5c7431fc483b91911fab606e9672 [2022-07-21 09:00:03,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:00:03,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:00:03,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:00:03,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:00:03,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:00:03,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:00:03" (1/1) ... [2022-07-21 09:00:03,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bbbe8c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:00:03, skipping insertion in model container [2022-07-21 09:00:03,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:00:03" (1/1) ... [2022-07-21 09:00:03,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:00:03,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:00:03,754 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-sre-symm.wvr.c[2133,2146] [2022-07-21 09:00:03,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:00:03,765 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:00:03,825 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-sre-symm.wvr.c[2133,2146] [2022-07-21 09:00:03,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:00:03,848 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:00:03,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:00:03 WrapperNode [2022-07-21 09:00:03,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:00:03,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:00:03,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:00:03,851 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:00:03,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:00:03" (1/1) ... [2022-07-21 09:00:03,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:00:03" (1/1) ... [2022-07-21 09:00:03,898 INFO L137 Inliner]: procedures = 21, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2022-07-21 09:00:03,898 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:00:03,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:00:03,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:00:03,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:00:03,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:00:03" (1/1) ... [2022-07-21 09:00:03,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:00:03" (1/1) ... [2022-07-21 09:00:03,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:00:03" (1/1) ... [2022-07-21 09:00:03,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:00:03" (1/1) ... [2022-07-21 09:00:03,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:00:03" (1/1) ... [2022-07-21 09:00:03,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:00:03" (1/1) ... [2022-07-21 09:00:03,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:00:03" (1/1) ... [2022-07-21 09:00:03,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:00:03,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:00:03,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:00:03,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:00:03,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:00:03" (1/1) ... [2022-07-21 09:00:03,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:00:03,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:00:03,969 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 09:00:03,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 09:00:04,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:00:04,012 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-21 09:00:04,012 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-21 09:00:04,012 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-21 09:00:04,012 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-21 09:00:04,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:00:04,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:00:04,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:00:04,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:00:04,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:00:04,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:00:04,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:00:04,015 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 09:00:04,106 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:00:04,108 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:00:04,241 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:00:04,248 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:00:04,248 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 09:00:04,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:00:04 BoogieIcfgContainer [2022-07-21 09:00:04,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:00:04,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:00:04,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:00:04,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:00:04,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:00:03" (1/3) ... [2022-07-21 09:00:04,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1237736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:00:04, skipping insertion in model container [2022-07-21 09:00:04,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:00:03" (2/3) ... [2022-07-21 09:00:04,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1237736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:00:04, skipping insertion in model container [2022-07-21 09:00:04,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:00:04" (3/3) ... [2022-07-21 09:00:04,257 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-sre-symm.wvr.c [2022-07-21 09:00:04,262 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 09:00:04,270 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:00:04,270 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:00:04,270 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 09:00:04,357 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-21 09:00:04,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 102 transitions, 220 flow [2022-07-21 09:00:04,438 INFO L129 PetriNetUnfolder]: 7/100 cut-off events. [2022-07-21 09:00:04,438 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 09:00:04,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 100 events. 7/100 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-07-21 09:00:04,442 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 102 transitions, 220 flow [2022-07-21 09:00:04,446 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 91 transitions, 194 flow [2022-07-21 09:00:04,454 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:00:04,460 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@47378436, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@297c0092 [2022-07-21 09:00:04,461 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-21 09:00:04,493 INFO L129 PetriNetUnfolder]: 7/90 cut-off events. [2022-07-21 09:00:04,493 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 09:00:04,493 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:04,494 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] [2022-07-21 09:00:04,495 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:04,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:04,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1122200234, now seen corresponding path program 1 times [2022-07-21 09:00:04,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:04,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480196435] [2022-07-21 09:00:04,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:04,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:04,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:04,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:04,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480196435] [2022-07-21 09:00:04,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480196435] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:04,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:04,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 09:00:04,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126121577] [2022-07-21 09:00:04,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:04,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:00:04,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:04,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:00:04,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:00:04,943 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 102 [2022-07-21 09:00:04,947 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 194 flow. Second operand has 8 states, 8 states have (on average 72.0) internal successors, (576), 8 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:04,948 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:04,948 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 102 [2022-07-21 09:00:04,949 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:05,199 INFO L129 PetriNetUnfolder]: 55/297 cut-off events. [2022-07-21 09:00:05,205 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-07-21 09:00:05,208 INFO L84 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 297 events. 55/297 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1144 event pairs, 11 based on Foata normal form. 9/290 useless extension candidates. Maximal degree in co-relation 265. Up to 44 conditions per place. [2022-07-21 09:00:05,213 INFO L132 encePairwiseOnDemand]: 86/102 looper letters, 52 selfloop transitions, 10 changer transitions 34/155 dead transitions. [2022-07-21 09:00:05,213 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 155 transitions, 541 flow [2022-07-21 09:00:05,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 09:00:05,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-21 09:00:05,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1141 transitions. [2022-07-21 09:00:05,230 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7457516339869281 [2022-07-21 09:00:05,230 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1141 transitions. [2022-07-21 09:00:05,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1141 transitions. [2022-07-21 09:00:05,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:05,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1141 transitions. [2022-07-21 09:00:05,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 76.06666666666666) internal successors, (1141), 15 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:05,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 102.0) internal successors, (1632), 16 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:05,248 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 102.0) internal successors, (1632), 16 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:05,249 INFO L186 Difference]: Start difference. First operand has 91 places, 91 transitions, 194 flow. Second operand 15 states and 1141 transitions. [2022-07-21 09:00:05,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 155 transitions, 541 flow [2022-07-21 09:00:05,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 155 transitions, 515 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-21 09:00:05,256 INFO L242 Difference]: Finished difference. Result has 111 places, 93 transitions, 253 flow [2022-07-21 09:00:05,258 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=253, PETRI_PLACES=111, PETRI_TRANSITIONS=93} [2022-07-21 09:00:05,261 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 20 predicate places. [2022-07-21 09:00:05,261 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 93 transitions, 253 flow [2022-07-21 09:00:05,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.0) internal successors, (576), 8 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:05,262 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:05,262 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] [2022-07-21 09:00:05,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 09:00:05,263 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:05,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:05,264 INFO L85 PathProgramCache]: Analyzing trace with hash -569889743, now seen corresponding path program 1 times [2022-07-21 09:00:05,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:05,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47953049] [2022-07-21 09:00:05,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:05,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:05,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:05,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:05,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47953049] [2022-07-21 09:00:05,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47953049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:05,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:05,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:00:05,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391377764] [2022-07-21 09:00:05,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:05,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:00:05,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:05,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:00:05,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:00:05,381 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-07-21 09:00:05,381 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 93 transitions, 253 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:05,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:05,382 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-07-21 09:00:05,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:05,462 INFO L129 PetriNetUnfolder]: 41/342 cut-off events. [2022-07-21 09:00:05,462 INFO L130 PetriNetUnfolder]: For 104/106 co-relation queries the response was YES. [2022-07-21 09:00:05,464 INFO L84 FinitePrefix]: Finished finitePrefix Result has 587 conditions, 342 events. 41/342 cut-off events. For 104/106 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1582 event pairs, 19 based on Foata normal form. 1/311 useless extension candidates. Maximal degree in co-relation 562. Up to 46 conditions per place. [2022-07-21 09:00:05,466 INFO L132 encePairwiseOnDemand]: 98/102 looper letters, 20 selfloop transitions, 2 changer transitions 3/102 dead transitions. [2022-07-21 09:00:05,466 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 102 transitions, 324 flow [2022-07-21 09:00:05,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:00:05,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 09:00:05,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2022-07-21 09:00:05,468 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8921568627450981 [2022-07-21 09:00:05,468 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2022-07-21 09:00:05,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2022-07-21 09:00:05,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:05,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2022-07-21 09:00:05,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:05,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:05,471 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:05,471 INFO L186 Difference]: Start difference. First operand has 111 places, 93 transitions, 253 flow. Second operand 3 states and 273 transitions. [2022-07-21 09:00:05,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 102 transitions, 324 flow [2022-07-21 09:00:05,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 102 transitions, 313 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-07-21 09:00:05,495 INFO L242 Difference]: Finished difference. Result has 99 places, 93 transitions, 252 flow [2022-07-21 09:00:05,495 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=99, PETRI_TRANSITIONS=93} [2022-07-21 09:00:05,499 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 8 predicate places. [2022-07-21 09:00:05,499 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 93 transitions, 252 flow [2022-07-21 09:00:05,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:05,500 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:05,501 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] [2022-07-21 09:00:05,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 09:00:05,502 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:05,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:05,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1322121675, now seen corresponding path program 2 times [2022-07-21 09:00:05,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:05,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047395370] [2022-07-21 09:00:05,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:05,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:05,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:05,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:05,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047395370] [2022-07-21 09:00:05,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047395370] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:05,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:05,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:00:05,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934173492] [2022-07-21 09:00:05,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:05,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:00:05,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:05,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:00:05,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:00:05,659 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-07-21 09:00:05,660 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 93 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:05,660 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:05,660 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-07-21 09:00:05,660 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:05,714 INFO L129 PetriNetUnfolder]: 26/184 cut-off events. [2022-07-21 09:00:05,714 INFO L130 PetriNetUnfolder]: For 65/66 co-relation queries the response was YES. [2022-07-21 09:00:05,716 INFO L84 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 184 events. 26/184 cut-off events. For 65/66 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 539 event pairs, 13 based on Foata normal form. 7/173 useless extension candidates. Maximal degree in co-relation 287. Up to 39 conditions per place. [2022-07-21 09:00:05,717 INFO L132 encePairwiseOnDemand]: 98/102 looper letters, 15 selfloop transitions, 2 changer transitions 9/93 dead transitions. [2022-07-21 09:00:05,717 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 93 transitions, 288 flow [2022-07-21 09:00:05,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:00:05,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 09:00:05,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2022-07-21 09:00:05,719 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8758169934640523 [2022-07-21 09:00:05,720 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2022-07-21 09:00:05,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2022-07-21 09:00:05,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:05,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2022-07-21 09:00:05,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:05,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:05,723 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:05,723 INFO L186 Difference]: Start difference. First operand has 99 places, 93 transitions, 252 flow. Second operand 3 states and 268 transitions. [2022-07-21 09:00:05,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 93 transitions, 288 flow [2022-07-21 09:00:05,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 93 transitions, 278 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-07-21 09:00:05,732 INFO L242 Difference]: Finished difference. Result has 99 places, 83 transitions, 204 flow [2022-07-21 09:00:05,732 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=99, PETRI_TRANSITIONS=83} [2022-07-21 09:00:05,734 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 8 predicate places. [2022-07-21 09:00:05,735 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 83 transitions, 204 flow [2022-07-21 09:00:05,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:05,735 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:05,736 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:05,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 09:00:05,736 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:05,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:05,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1194239646, now seen corresponding path program 1 times [2022-07-21 09:00:05,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:05,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439078392] [2022-07-21 09:00:05,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:05,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:05,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:05,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:05,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439078392] [2022-07-21 09:00:05,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439078392] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:05,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:05,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:05,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042970165] [2022-07-21 09:00:05,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:05,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:05,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:05,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:05,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:05,991 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:05,992 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 83 transitions, 204 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:05,993 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:05,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:05,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:06,392 INFO L129 PetriNetUnfolder]: 96/368 cut-off events. [2022-07-21 09:00:06,393 INFO L130 PetriNetUnfolder]: For 155/157 co-relation queries the response was YES. [2022-07-21 09:00:06,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 368 events. 96/368 cut-off events. For 155/157 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1618 event pairs, 35 based on Foata normal form. 1/360 useless extension candidates. Maximal degree in co-relation 693. Up to 112 conditions per place. [2022-07-21 09:00:06,396 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 75 selfloop transitions, 5 changer transitions 34/167 dead transitions. [2022-07-21 09:00:06,396 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 167 transitions, 697 flow [2022-07-21 09:00:06,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 09:00:06,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 09:00:06,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1627 transitions. [2022-07-21 09:00:06,401 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6646241830065359 [2022-07-21 09:00:06,401 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1627 transitions. [2022-07-21 09:00:06,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1627 transitions. [2022-07-21 09:00:06,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:06,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1627 transitions. [2022-07-21 09:00:06,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 67.79166666666667) internal successors, (1627), 24 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:06,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:06,412 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:06,413 INFO L186 Difference]: Start difference. First operand has 99 places, 83 transitions, 204 flow. Second operand 24 states and 1627 transitions. [2022-07-21 09:00:06,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 167 transitions, 697 flow [2022-07-21 09:00:06,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 167 transitions, 643 flow, removed 22 selfloop flow, removed 5 redundant places. [2022-07-21 09:00:06,418 INFO L242 Difference]: Finished difference. Result has 132 places, 87 transitions, 283 flow [2022-07-21 09:00:06,418 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=283, PETRI_PLACES=132, PETRI_TRANSITIONS=87} [2022-07-21 09:00:06,419 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 41 predicate places. [2022-07-21 09:00:06,419 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 87 transitions, 283 flow [2022-07-21 09:00:06,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:06,420 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:06,420 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] [2022-07-21 09:00:06,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 09:00:06,420 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:06,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:06,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1572308048, now seen corresponding path program 2 times [2022-07-21 09:00:06,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:06,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139380099] [2022-07-21 09:00:06,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:06,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:06,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:06,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:06,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139380099] [2022-07-21 09:00:06,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139380099] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:06,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:06,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:06,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373401769] [2022-07-21 09:00:06,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:06,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:06,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:06,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:06,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:06,597 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:06,598 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 87 transitions, 283 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:06,598 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:06,598 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:06,599 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:06,890 INFO L129 PetriNetUnfolder]: 94/370 cut-off events. [2022-07-21 09:00:06,891 INFO L130 PetriNetUnfolder]: For 885/886 co-relation queries the response was YES. [2022-07-21 09:00:06,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1186 conditions, 370 events. 94/370 cut-off events. For 885/886 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1614 event pairs, 44 based on Foata normal form. 1/358 useless extension candidates. Maximal degree in co-relation 1108. Up to 149 conditions per place. [2022-07-21 09:00:06,896 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 45 selfloop transitions, 14 changer transitions 18/130 dead transitions. [2022-07-21 09:00:06,896 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 130 transitions, 757 flow [2022-07-21 09:00:06,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 09:00:06,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 09:00:06,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1086 transitions. [2022-07-21 09:00:06,900 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6654411764705882 [2022-07-21 09:00:06,900 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1086 transitions. [2022-07-21 09:00:06,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1086 transitions. [2022-07-21 09:00:06,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:06,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1086 transitions. [2022-07-21 09:00:06,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 67.875) internal successors, (1086), 16 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:06,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:06,909 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:06,909 INFO L186 Difference]: Start difference. First operand has 132 places, 87 transitions, 283 flow. Second operand 16 states and 1086 transitions. [2022-07-21 09:00:06,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 130 transitions, 757 flow [2022-07-21 09:00:06,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 130 transitions, 682 flow, removed 37 selfloop flow, removed 11 redundant places. [2022-07-21 09:00:06,918 INFO L242 Difference]: Finished difference. Result has 130 places, 97 transitions, 405 flow [2022-07-21 09:00:06,918 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=405, PETRI_PLACES=130, PETRI_TRANSITIONS=97} [2022-07-21 09:00:06,928 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 39 predicate places. [2022-07-21 09:00:06,929 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 97 transitions, 405 flow [2022-07-21 09:00:06,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:06,930 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:06,930 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:06,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 09:00:06,930 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:06,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:06,932 INFO L85 PathProgramCache]: Analyzing trace with hash 74872556, now seen corresponding path program 3 times [2022-07-21 09:00:06,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:06,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745495102] [2022-07-21 09:00:06,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:06,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:07,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:07,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:07,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745495102] [2022-07-21 09:00:07,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745495102] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:07,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:07,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:07,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894240506] [2022-07-21 09:00:07,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:07,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:07,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:07,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:07,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:07,129 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:07,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 97 transitions, 405 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:07,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:07,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:07,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:07,469 INFO L129 PetriNetUnfolder]: 118/436 cut-off events. [2022-07-21 09:00:07,469 INFO L130 PetriNetUnfolder]: For 1405/1409 co-relation queries the response was YES. [2022-07-21 09:00:07,471 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1600 conditions, 436 events. 118/436 cut-off events. For 1405/1409 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2051 event pairs, 55 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 1521. Up to 155 conditions per place. [2022-07-21 09:00:07,474 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 60 selfloop transitions, 15 changer transitions 28/156 dead transitions. [2022-07-21 09:00:07,474 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 156 transitions, 1112 flow [2022-07-21 09:00:07,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 09:00:07,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 09:00:07,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1418 transitions. [2022-07-21 09:00:07,478 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6619981325863679 [2022-07-21 09:00:07,479 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1418 transitions. [2022-07-21 09:00:07,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1418 transitions. [2022-07-21 09:00:07,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:07,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1418 transitions. [2022-07-21 09:00:07,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 67.52380952380952) internal successors, (1418), 21 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:07,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:07,488 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:07,488 INFO L186 Difference]: Start difference. First operand has 130 places, 97 transitions, 405 flow. Second operand 21 states and 1418 transitions. [2022-07-21 09:00:07,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 156 transitions, 1112 flow [2022-07-21 09:00:07,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 156 transitions, 1001 flow, removed 41 selfloop flow, removed 7 redundant places. [2022-07-21 09:00:07,499 INFO L242 Difference]: Finished difference. Result has 152 places, 109 transitions, 552 flow [2022-07-21 09:00:07,499 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=552, PETRI_PLACES=152, PETRI_TRANSITIONS=109} [2022-07-21 09:00:07,500 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 61 predicate places. [2022-07-21 09:00:07,500 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 109 transitions, 552 flow [2022-07-21 09:00:07,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:07,501 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:07,501 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] [2022-07-21 09:00:07,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 09:00:07,502 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:07,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:07,502 INFO L85 PathProgramCache]: Analyzing trace with hash 397407754, now seen corresponding path program 4 times [2022-07-21 09:00:07,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:07,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216649235] [2022-07-21 09:00:07,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:07,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:07,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:07,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:07,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216649235] [2022-07-21 09:00:07,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216649235] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:07,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:07,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:07,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838804091] [2022-07-21 09:00:07,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:07,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:07,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:07,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:07,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:07,623 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:07,623 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 109 transitions, 552 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:07,624 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:07,624 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:07,624 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:07,927 INFO L129 PetriNetUnfolder]: 113/436 cut-off events. [2022-07-21 09:00:07,928 INFO L130 PetriNetUnfolder]: For 2600/2606 co-relation queries the response was YES. [2022-07-21 09:00:07,930 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1876 conditions, 436 events. 113/436 cut-off events. For 2600/2606 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2145 event pairs, 60 based on Foata normal form. 1/422 useless extension candidates. Maximal degree in co-relation 1786. Up to 168 conditions per place. [2022-07-21 09:00:07,933 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 56 selfloop transitions, 23 changer transitions 28/160 dead transitions. [2022-07-21 09:00:07,933 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 160 transitions, 1387 flow [2022-07-21 09:00:07,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 09:00:07,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 09:00:07,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1348 transitions. [2022-07-21 09:00:07,937 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6607843137254902 [2022-07-21 09:00:07,937 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1348 transitions. [2022-07-21 09:00:07,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1348 transitions. [2022-07-21 09:00:07,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:07,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1348 transitions. [2022-07-21 09:00:07,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 67.4) internal successors, (1348), 20 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:07,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:07,946 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:07,946 INFO L186 Difference]: Start difference. First operand has 152 places, 109 transitions, 552 flow. Second operand 20 states and 1348 transitions. [2022-07-21 09:00:07,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 160 transitions, 1387 flow [2022-07-21 09:00:07,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 160 transitions, 1227 flow, removed 80 selfloop flow, removed 9 redundant places. [2022-07-21 09:00:07,960 INFO L242 Difference]: Finished difference. Result has 164 places, 118 transitions, 696 flow [2022-07-21 09:00:07,961 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=696, PETRI_PLACES=164, PETRI_TRANSITIONS=118} [2022-07-21 09:00:07,961 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 73 predicate places. [2022-07-21 09:00:07,961 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 118 transitions, 696 flow [2022-07-21 09:00:07,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:07,962 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:07,962 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] [2022-07-21 09:00:07,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 09:00:07,963 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:07,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:07,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1790540224, now seen corresponding path program 1 times [2022-07-21 09:00:07,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:07,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992826409] [2022-07-21 09:00:07,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:07,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:08,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:08,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:08,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992826409] [2022-07-21 09:00:08,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992826409] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:08,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:08,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:00:08,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686929091] [2022-07-21 09:00:08,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:08,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:00:08,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:08,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:00:08,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:00:08,022 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-07-21 09:00:08,022 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 118 transitions, 696 flow. Second operand has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:08,022 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:08,022 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-07-21 09:00:08,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:08,121 INFO L129 PetriNetUnfolder]: 69/417 cut-off events. [2022-07-21 09:00:08,122 INFO L130 PetriNetUnfolder]: For 2279/2291 co-relation queries the response was YES. [2022-07-21 09:00:08,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1596 conditions, 417 events. 69/417 cut-off events. For 2279/2291 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2099 event pairs, 34 based on Foata normal form. 8/401 useless extension candidates. Maximal degree in co-relation 1501. Up to 52 conditions per place. [2022-07-21 09:00:08,127 INFO L132 encePairwiseOnDemand]: 94/102 looper letters, 20 selfloop transitions, 8 changer transitions 0/130 dead transitions. [2022-07-21 09:00:08,127 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 130 transitions, 786 flow [2022-07-21 09:00:08,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:00:08,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 09:00:08,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 440 transitions. [2022-07-21 09:00:08,129 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8627450980392157 [2022-07-21 09:00:08,130 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 440 transitions. [2022-07-21 09:00:08,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 440 transitions. [2022-07-21 09:00:08,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:08,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 440 transitions. [2022-07-21 09:00:08,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:08,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:08,133 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:08,133 INFO L186 Difference]: Start difference. First operand has 164 places, 118 transitions, 696 flow. Second operand 5 states and 440 transitions. [2022-07-21 09:00:08,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 130 transitions, 786 flow [2022-07-21 09:00:08,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 130 transitions, 728 flow, removed 22 selfloop flow, removed 12 redundant places. [2022-07-21 09:00:08,146 INFO L242 Difference]: Finished difference. Result has 147 places, 122 transitions, 686 flow [2022-07-21 09:00:08,146 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=686, PETRI_PLACES=147, PETRI_TRANSITIONS=122} [2022-07-21 09:00:08,147 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 56 predicate places. [2022-07-21 09:00:08,147 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 122 transitions, 686 flow [2022-07-21 09:00:08,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:08,148 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:08,148 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] [2022-07-21 09:00:08,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 09:00:08,148 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:08,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:08,149 INFO L85 PathProgramCache]: Analyzing trace with hash -2048059198, now seen corresponding path program 2 times [2022-07-21 09:00:08,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:08,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980797272] [2022-07-21 09:00:08,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:08,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:08,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:08,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:08,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980797272] [2022-07-21 09:00:08,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980797272] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:08,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:08,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:00:08,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931589873] [2022-07-21 09:00:08,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:08,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:00:08,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:08,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:00:08,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:00:08,195 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-07-21 09:00:08,195 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 122 transitions, 686 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:08,195 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:08,196 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-07-21 09:00:08,196 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:08,273 INFO L129 PetriNetUnfolder]: 61/391 cut-off events. [2022-07-21 09:00:08,274 INFO L130 PetriNetUnfolder]: For 1285/1297 co-relation queries the response was YES. [2022-07-21 09:00:08,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1314 conditions, 391 events. 61/391 cut-off events. For 1285/1297 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1915 event pairs, 31 based on Foata normal form. 7/385 useless extension candidates. Maximal degree in co-relation 1082. Up to 47 conditions per place. [2022-07-21 09:00:08,277 INFO L132 encePairwiseOnDemand]: 94/102 looper letters, 22 selfloop transitions, 7 changer transitions 0/131 dead transitions. [2022-07-21 09:00:08,278 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 131 transitions, 780 flow [2022-07-21 09:00:08,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 09:00:08,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-21 09:00:08,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 354 transitions. [2022-07-21 09:00:08,279 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8676470588235294 [2022-07-21 09:00:08,279 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 354 transitions. [2022-07-21 09:00:08,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 354 transitions. [2022-07-21 09:00:08,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:08,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 354 transitions. [2022-07-21 09:00:08,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:08,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:08,282 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:08,283 INFO L186 Difference]: Start difference. First operand has 147 places, 122 transitions, 686 flow. Second operand 4 states and 354 transitions. [2022-07-21 09:00:08,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 131 transitions, 780 flow [2022-07-21 09:00:08,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 131 transitions, 778 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 09:00:08,292 INFO L242 Difference]: Finished difference. Result has 151 places, 124 transitions, 722 flow [2022-07-21 09:00:08,293 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=722, PETRI_PLACES=151, PETRI_TRANSITIONS=124} [2022-07-21 09:00:08,293 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 60 predicate places. [2022-07-21 09:00:08,294 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 124 transitions, 722 flow [2022-07-21 09:00:08,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:08,294 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:08,294 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] [2022-07-21 09:00:08,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 09:00:08,295 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:08,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:08,295 INFO L85 PathProgramCache]: Analyzing trace with hash 973234580, now seen corresponding path program 5 times [2022-07-21 09:00:08,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:08,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738429233] [2022-07-21 09:00:08,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:08,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:08,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:08,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:08,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738429233] [2022-07-21 09:00:08,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738429233] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:08,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:08,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:08,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421418167] [2022-07-21 09:00:08,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:08,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:08,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:08,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:08,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:08,409 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:08,410 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 124 transitions, 722 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:08,410 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:08,410 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:08,410 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:08,744 INFO L129 PetriNetUnfolder]: 134/552 cut-off events. [2022-07-21 09:00:08,745 INFO L130 PetriNetUnfolder]: For 2245/2261 co-relation queries the response was YES. [2022-07-21 09:00:08,748 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2223 conditions, 552 events. 134/552 cut-off events. For 2245/2261 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3033 event pairs, 57 based on Foata normal form. 1/543 useless extension candidates. Maximal degree in co-relation 2055. Up to 193 conditions per place. [2022-07-21 09:00:08,751 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 78 selfloop transitions, 20 changer transitions 28/185 dead transitions. [2022-07-21 09:00:08,751 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 185 transitions, 1533 flow [2022-07-21 09:00:08,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 09:00:08,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 09:00:08,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1352 transitions. [2022-07-21 09:00:08,754 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6627450980392157 [2022-07-21 09:00:08,754 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1352 transitions. [2022-07-21 09:00:08,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1352 transitions. [2022-07-21 09:00:08,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:08,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1352 transitions. [2022-07-21 09:00:08,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 67.6) internal successors, (1352), 20 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:08,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:08,767 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:08,768 INFO L186 Difference]: Start difference. First operand has 151 places, 124 transitions, 722 flow. Second operand 20 states and 1352 transitions. [2022-07-21 09:00:08,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 185 transitions, 1533 flow [2022-07-21 09:00:08,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 185 transitions, 1521 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-21 09:00:08,781 INFO L242 Difference]: Finished difference. Result has 185 places, 134 transitions, 917 flow [2022-07-21 09:00:08,782 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=917, PETRI_PLACES=185, PETRI_TRANSITIONS=134} [2022-07-21 09:00:08,783 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 94 predicate places. [2022-07-21 09:00:08,783 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 134 transitions, 917 flow [2022-07-21 09:00:08,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:08,784 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:08,784 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] [2022-07-21 09:00:08,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 09:00:08,785 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:08,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:08,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1649984722, now seen corresponding path program 6 times [2022-07-21 09:00:08,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:08,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205773989] [2022-07-21 09:00:08,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:08,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:08,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:08,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:08,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205773989] [2022-07-21 09:00:08,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205773989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:08,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:08,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:08,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003562907] [2022-07-21 09:00:08,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:08,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:08,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:08,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:08,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:08,911 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:08,912 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 134 transitions, 917 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:08,912 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:08,912 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:08,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:09,284 INFO L129 PetriNetUnfolder]: 131/559 cut-off events. [2022-07-21 09:00:09,285 INFO L130 PetriNetUnfolder]: For 4526/4545 co-relation queries the response was YES. [2022-07-21 09:00:09,289 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2696 conditions, 559 events. 131/559 cut-off events. For 4526/4545 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3189 event pairs, 40 based on Foata normal form. 1/552 useless extension candidates. Maximal degree in co-relation 2569. Up to 125 conditions per place. [2022-07-21 09:00:09,293 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 115 selfloop transitions, 24 changer transitions 40/238 dead transitions. [2022-07-21 09:00:09,293 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 238 transitions, 2380 flow [2022-07-21 09:00:09,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 09:00:09,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 09:00:09,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1624 transitions. [2022-07-21 09:00:09,296 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6633986928104575 [2022-07-21 09:00:09,296 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1624 transitions. [2022-07-21 09:00:09,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1624 transitions. [2022-07-21 09:00:09,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:09,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1624 transitions. [2022-07-21 09:00:09,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 67.66666666666667) internal successors, (1624), 24 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:09,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:09,305 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:09,306 INFO L186 Difference]: Start difference. First operand has 185 places, 134 transitions, 917 flow. Second operand 24 states and 1624 transitions. [2022-07-21 09:00:09,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 238 transitions, 2380 flow [2022-07-21 09:00:09,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 238 transitions, 2170 flow, removed 105 selfloop flow, removed 9 redundant places. [2022-07-21 09:00:09,328 INFO L242 Difference]: Finished difference. Result has 208 places, 137 transitions, 1042 flow [2022-07-21 09:00:09,329 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1042, PETRI_PLACES=208, PETRI_TRANSITIONS=137} [2022-07-21 09:00:09,329 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 117 predicate places. [2022-07-21 09:00:09,330 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 137 transitions, 1042 flow [2022-07-21 09:00:09,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:09,330 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:09,330 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] [2022-07-21 09:00:09,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 09:00:09,331 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:09,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:09,331 INFO L85 PathProgramCache]: Analyzing trace with hash 624016976, now seen corresponding path program 7 times [2022-07-21 09:00:09,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:09,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572455083] [2022-07-21 09:00:09,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:09,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:09,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:09,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:09,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572455083] [2022-07-21 09:00:09,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572455083] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:09,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:09,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:09,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979336891] [2022-07-21 09:00:09,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:09,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:09,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:09,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:09,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:09,490 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:09,491 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 137 transitions, 1042 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:09,491 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:09,491 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:09,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:09,907 INFO L129 PetriNetUnfolder]: 127/562 cut-off events. [2022-07-21 09:00:09,908 INFO L130 PetriNetUnfolder]: For 4693/4705 co-relation queries the response was YES. [2022-07-21 09:00:09,912 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2751 conditions, 562 events. 127/562 cut-off events. For 4693/4705 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3230 event pairs, 74 based on Foata normal form. 3/556 useless extension candidates. Maximal degree in co-relation 2639. Up to 245 conditions per place. [2022-07-21 09:00:09,915 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 68 selfloop transitions, 26 changer transitions 34/187 dead transitions. [2022-07-21 09:00:09,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 187 transitions, 1910 flow [2022-07-21 09:00:09,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 09:00:09,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-21 09:00:09,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1478 transitions. [2022-07-21 09:00:09,918 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6586452762923352 [2022-07-21 09:00:09,918 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1478 transitions. [2022-07-21 09:00:09,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1478 transitions. [2022-07-21 09:00:09,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:09,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1478 transitions. [2022-07-21 09:00:09,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 67.18181818181819) internal successors, (1478), 22 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:09,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:09,925 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:09,925 INFO L186 Difference]: Start difference. First operand has 208 places, 137 transitions, 1042 flow. Second operand 22 states and 1478 transitions. [2022-07-21 09:00:09,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 187 transitions, 1910 flow [2022-07-21 09:00:09,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 187 transitions, 1840 flow, removed 25 selfloop flow, removed 18 redundant places. [2022-07-21 09:00:09,950 INFO L242 Difference]: Finished difference. Result has 208 places, 137 transitions, 1097 flow [2022-07-21 09:00:09,950 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1097, PETRI_PLACES=208, PETRI_TRANSITIONS=137} [2022-07-21 09:00:09,951 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 117 predicate places. [2022-07-21 09:00:09,951 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 137 transitions, 1097 flow [2022-07-21 09:00:09,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:09,952 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:09,952 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:09,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 09:00:09,952 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:09,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:09,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1308203306, now seen corresponding path program 8 times [2022-07-21 09:00:09,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:09,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203697187] [2022-07-21 09:00:09,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:09,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:10,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:10,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:10,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203697187] [2022-07-21 09:00:10,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203697187] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:10,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:10,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:10,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229918805] [2022-07-21 09:00:10,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:10,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:10,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:10,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:10,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:10,064 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:10,066 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 137 transitions, 1097 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:10,066 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:10,066 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:10,066 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:10,336 INFO L129 PetriNetUnfolder]: 114/512 cut-off events. [2022-07-21 09:00:10,336 INFO L130 PetriNetUnfolder]: For 4368/4387 co-relation queries the response was YES. [2022-07-21 09:00:10,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2539 conditions, 512 events. 114/512 cut-off events. For 4368/4387 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2793 event pairs, 74 based on Foata normal form. 7/510 useless extension candidates. Maximal degree in co-relation 2395. Up to 243 conditions per place. [2022-07-21 09:00:10,343 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 59 selfloop transitions, 14 changer transitions 31/163 dead transitions. [2022-07-21 09:00:10,343 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 163 transitions, 1631 flow [2022-07-21 09:00:10,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:10,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:10,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1209 transitions. [2022-07-21 09:00:10,346 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6584967320261438 [2022-07-21 09:00:10,346 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1209 transitions. [2022-07-21 09:00:10,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1209 transitions. [2022-07-21 09:00:10,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:10,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1209 transitions. [2022-07-21 09:00:10,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.16666666666667) internal successors, (1209), 18 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:10,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:10,353 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:10,353 INFO L186 Difference]: Start difference. First operand has 208 places, 137 transitions, 1097 flow. Second operand 18 states and 1209 transitions. [2022-07-21 09:00:10,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 163 transitions, 1631 flow [2022-07-21 09:00:10,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 163 transitions, 1506 flow, removed 45 selfloop flow, removed 17 redundant places. [2022-07-21 09:00:10,376 INFO L242 Difference]: Finished difference. Result has 201 places, 122 transitions, 848 flow [2022-07-21 09:00:10,377 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=848, PETRI_PLACES=201, PETRI_TRANSITIONS=122} [2022-07-21 09:00:10,378 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 110 predicate places. [2022-07-21 09:00:10,378 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 122 transitions, 848 flow [2022-07-21 09:00:10,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:10,379 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:10,379 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] [2022-07-21 09:00:10,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 09:00:10,380 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:10,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:10,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1813419210, now seen corresponding path program 9 times [2022-07-21 09:00:10,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:10,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756759106] [2022-07-21 09:00:10,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:10,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:10,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:10,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:10,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756759106] [2022-07-21 09:00:10,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756759106] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:10,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:10,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:10,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125298061] [2022-07-21 09:00:10,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:10,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:10,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:10,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:10,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:10,503 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:10,504 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 122 transitions, 848 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:10,504 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:10,504 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:10,504 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:10,804 INFO L129 PetriNetUnfolder]: 116/511 cut-off events. [2022-07-21 09:00:10,804 INFO L130 PetriNetUnfolder]: For 3976/3991 co-relation queries the response was YES. [2022-07-21 09:00:10,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2505 conditions, 511 events. 116/511 cut-off events. For 3976/3991 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2752 event pairs, 80 based on Foata normal form. 3/503 useless extension candidates. Maximal degree in co-relation 2444. Up to 243 conditions per place. [2022-07-21 09:00:10,811 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 56 selfloop transitions, 22 changer transitions 21/158 dead transitions. [2022-07-21 09:00:10,812 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 158 transitions, 1551 flow [2022-07-21 09:00:10,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:10,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:10,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1215 transitions. [2022-07-21 09:00:10,814 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6617647058823529 [2022-07-21 09:00:10,814 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1215 transitions. [2022-07-21 09:00:10,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1215 transitions. [2022-07-21 09:00:10,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:10,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1215 transitions. [2022-07-21 09:00:10,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.5) internal successors, (1215), 18 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:10,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:10,835 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:10,835 INFO L186 Difference]: Start difference. First operand has 201 places, 122 transitions, 848 flow. Second operand 18 states and 1215 transitions. [2022-07-21 09:00:10,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 158 transitions, 1551 flow [2022-07-21 09:00:10,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 158 transitions, 1378 flow, removed 40 selfloop flow, removed 18 redundant places. [2022-07-21 09:00:10,855 INFO L242 Difference]: Finished difference. Result has 186 places, 131 transitions, 971 flow [2022-07-21 09:00:10,855 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=971, PETRI_PLACES=186, PETRI_TRANSITIONS=131} [2022-07-21 09:00:10,856 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 95 predicate places. [2022-07-21 09:00:10,857 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 131 transitions, 971 flow [2022-07-21 09:00:10,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:10,857 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:10,857 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] [2022-07-21 09:00:10,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 09:00:10,858 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:10,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:10,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1811456982, now seen corresponding path program 10 times [2022-07-21 09:00:10,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:10,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736522423] [2022-07-21 09:00:10,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:10,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:10,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:10,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:10,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736522423] [2022-07-21 09:00:10,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736522423] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:10,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:10,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:10,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159382102] [2022-07-21 09:00:10,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:10,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:10,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:10,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:11,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:11,001 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:11,001 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 131 transitions, 971 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:11,001 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:11,001 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:11,002 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:11,330 INFO L129 PetriNetUnfolder]: 113/513 cut-off events. [2022-07-21 09:00:11,330 INFO L130 PetriNetUnfolder]: For 3249/3262 co-relation queries the response was YES. [2022-07-21 09:00:11,334 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2366 conditions, 513 events. 113/513 cut-off events. For 3249/3262 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2784 event pairs, 78 based on Foata normal form. 3/505 useless extension candidates. Maximal degree in co-relation 2309. Up to 243 conditions per place. [2022-07-21 09:00:11,337 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 57 selfloop transitions, 24 changer transitions 22/162 dead transitions. [2022-07-21 09:00:11,337 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 162 transitions, 1583 flow [2022-07-21 09:00:11,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 09:00:11,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 09:00:11,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1151 transitions. [2022-07-21 09:00:11,339 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6637831603229527 [2022-07-21 09:00:11,339 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1151 transitions. [2022-07-21 09:00:11,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1151 transitions. [2022-07-21 09:00:11,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:11,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1151 transitions. [2022-07-21 09:00:11,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.70588235294117) internal successors, (1151), 17 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:11,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:11,345 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:11,345 INFO L186 Difference]: Start difference. First operand has 186 places, 131 transitions, 971 flow. Second operand 17 states and 1151 transitions. [2022-07-21 09:00:11,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 162 transitions, 1583 flow [2022-07-21 09:00:11,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 162 transitions, 1512 flow, removed 30 selfloop flow, removed 5 redundant places. [2022-07-21 09:00:11,363 INFO L242 Difference]: Finished difference. Result has 198 places, 135 transitions, 1074 flow [2022-07-21 09:00:11,363 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1074, PETRI_PLACES=198, PETRI_TRANSITIONS=135} [2022-07-21 09:00:11,364 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 107 predicate places. [2022-07-21 09:00:11,364 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 135 transitions, 1074 flow [2022-07-21 09:00:11,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:11,364 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:11,364 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] [2022-07-21 09:00:11,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 09:00:11,365 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:11,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:11,365 INFO L85 PathProgramCache]: Analyzing trace with hash -66650394, now seen corresponding path program 11 times [2022-07-21 09:00:11,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:11,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001533089] [2022-07-21 09:00:11,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:11,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:11,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:11,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:11,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001533089] [2022-07-21 09:00:11,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001533089] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:11,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:11,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:11,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172822020] [2022-07-21 09:00:11,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:11,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:11,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:11,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:11,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:11,473 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:11,473 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 135 transitions, 1074 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:11,474 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:11,474 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:11,474 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:11,757 INFO L129 PetriNetUnfolder]: 110/508 cut-off events. [2022-07-21 09:00:11,757 INFO L130 PetriNetUnfolder]: For 3304/3317 co-relation queries the response was YES. [2022-07-21 09:00:11,761 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2347 conditions, 508 events. 110/508 cut-off events. For 3304/3317 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2758 event pairs, 78 based on Foata normal form. 3/500 useless extension candidates. Maximal degree in co-relation 2284. Up to 243 conditions per place. [2022-07-21 09:00:11,764 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 57 selfloop transitions, 14 changer transitions 30/160 dead transitions. [2022-07-21 09:00:11,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 160 transitions, 1566 flow [2022-07-21 09:00:11,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 09:00:11,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 09:00:11,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1150 transitions. [2022-07-21 09:00:11,766 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6632064590542099 [2022-07-21 09:00:11,766 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1150 transitions. [2022-07-21 09:00:11,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1150 transitions. [2022-07-21 09:00:11,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:11,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1150 transitions. [2022-07-21 09:00:11,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.6470588235294) internal successors, (1150), 17 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:11,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:11,772 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:11,772 INFO L186 Difference]: Start difference. First operand has 198 places, 135 transitions, 1074 flow. Second operand 17 states and 1150 transitions. [2022-07-21 09:00:11,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 160 transitions, 1566 flow [2022-07-21 09:00:11,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 160 transitions, 1471 flow, removed 26 selfloop flow, removed 8 redundant places. [2022-07-21 09:00:11,792 INFO L242 Difference]: Finished difference. Result has 205 places, 126 transitions, 900 flow [2022-07-21 09:00:11,793 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1001, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=900, PETRI_PLACES=205, PETRI_TRANSITIONS=126} [2022-07-21 09:00:11,793 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 114 predicate places. [2022-07-21 09:00:11,794 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 126 transitions, 900 flow [2022-07-21 09:00:11,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:11,794 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:11,794 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] [2022-07-21 09:00:11,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 09:00:11,795 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:11,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:11,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1478253392, now seen corresponding path program 12 times [2022-07-21 09:00:11,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:11,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241545580] [2022-07-21 09:00:11,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:11,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:11,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:11,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:11,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241545580] [2022-07-21 09:00:11,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241545580] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:11,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:11,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:11,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150756516] [2022-07-21 09:00:11,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:11,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:11,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:11,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:11,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:11,894 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:11,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 126 transitions, 900 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:11,895 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:11,895 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:11,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:12,166 INFO L129 PetriNetUnfolder]: 100/468 cut-off events. [2022-07-21 09:00:12,166 INFO L130 PetriNetUnfolder]: For 3049/3063 co-relation queries the response was YES. [2022-07-21 09:00:12,170 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2087 conditions, 468 events. 100/468 cut-off events. For 3049/3063 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2403 event pairs, 74 based on Foata normal form. 3/462 useless extension candidates. Maximal degree in co-relation 2023. Up to 230 conditions per place. [2022-07-21 09:00:12,172 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 47 selfloop transitions, 3 changer transitions 33/142 dead transitions. [2022-07-21 09:00:12,172 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 142 transitions, 1230 flow [2022-07-21 09:00:12,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:12,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:12,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1205 transitions. [2022-07-21 09:00:12,175 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.656318082788671 [2022-07-21 09:00:12,175 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1205 transitions. [2022-07-21 09:00:12,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1205 transitions. [2022-07-21 09:00:12,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:12,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1205 transitions. [2022-07-21 09:00:12,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 66.94444444444444) internal successors, (1205), 18 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:12,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:12,180 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:12,181 INFO L186 Difference]: Start difference. First operand has 205 places, 126 transitions, 900 flow. Second operand 18 states and 1205 transitions. [2022-07-21 09:00:12,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 142 transitions, 1230 flow [2022-07-21 09:00:12,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 142 transitions, 1112 flow, removed 25 selfloop flow, removed 22 redundant places. [2022-07-21 09:00:12,197 INFO L242 Difference]: Finished difference. Result has 189 places, 106 transitions, 575 flow [2022-07-21 09:00:12,197 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=575, PETRI_PLACES=189, PETRI_TRANSITIONS=106} [2022-07-21 09:00:12,197 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 98 predicate places. [2022-07-21 09:00:12,198 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 106 transitions, 575 flow [2022-07-21 09:00:12,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:12,198 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:12,198 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] [2022-07-21 09:00:12,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 09:00:12,199 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:12,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:12,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1540170770, now seen corresponding path program 13 times [2022-07-21 09:00:12,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:12,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234041931] [2022-07-21 09:00:12,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:12,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:12,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:12,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:12,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234041931] [2022-07-21 09:00:12,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234041931] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:12,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:12,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:12,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804926672] [2022-07-21 09:00:12,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:12,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:12,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:12,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:12,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:12,298 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:12,299 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 106 transitions, 575 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:12,299 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:12,299 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:12,299 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:12,655 INFO L129 PetriNetUnfolder]: 105/471 cut-off events. [2022-07-21 09:00:12,655 INFO L130 PetriNetUnfolder]: For 2883/2889 co-relation queries the response was YES. [2022-07-21 09:00:12,658 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2095 conditions, 471 events. 105/471 cut-off events. For 2883/2889 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2406 event pairs, 46 based on Foata normal form. 1/466 useless extension candidates. Maximal degree in co-relation 2040. Up to 162 conditions per place. [2022-07-21 09:00:12,660 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 63 selfloop transitions, 19 changer transitions 28/169 dead transitions. [2022-07-21 09:00:12,660 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 169 transitions, 1480 flow [2022-07-21 09:00:12,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 09:00:12,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-21 09:00:12,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1477 transitions. [2022-07-21 09:00:12,663 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6581996434937611 [2022-07-21 09:00:12,663 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1477 transitions. [2022-07-21 09:00:12,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1477 transitions. [2022-07-21 09:00:12,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:12,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1477 transitions. [2022-07-21 09:00:12,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 67.13636363636364) internal successors, (1477), 22 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:12,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:12,670 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:12,670 INFO L186 Difference]: Start difference. First operand has 189 places, 106 transitions, 575 flow. Second operand 22 states and 1477 transitions. [2022-07-21 09:00:12,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 169 transitions, 1480 flow [2022-07-21 09:00:12,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 169 transitions, 1295 flow, removed 40 selfloop flow, removed 21 redundant places. [2022-07-21 09:00:12,681 INFO L242 Difference]: Finished difference. Result has 175 places, 117 transitions, 709 flow [2022-07-21 09:00:12,681 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=709, PETRI_PLACES=175, PETRI_TRANSITIONS=117} [2022-07-21 09:00:12,682 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 84 predicate places. [2022-07-21 09:00:12,682 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 117 transitions, 709 flow [2022-07-21 09:00:12,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:12,683 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:12,683 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] [2022-07-21 09:00:12,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 09:00:12,683 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:12,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:12,684 INFO L85 PathProgramCache]: Analyzing trace with hash 498665044, now seen corresponding path program 14 times [2022-07-21 09:00:12,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:12,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255410277] [2022-07-21 09:00:12,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:12,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:12,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:12,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:12,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255410277] [2022-07-21 09:00:12,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255410277] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:12,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:12,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:12,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003049237] [2022-07-21 09:00:12,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:12,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:12,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:12,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:12,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:12,784 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:12,785 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 117 transitions, 709 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:12,785 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:12,785 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:12,785 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:13,108 INFO L129 PetriNetUnfolder]: 102/455 cut-off events. [2022-07-21 09:00:13,109 INFO L130 PetriNetUnfolder]: For 2221/2227 co-relation queries the response was YES. [2022-07-21 09:00:13,113 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2023 conditions, 455 events. 102/455 cut-off events. For 2221/2227 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2282 event pairs, 47 based on Foata normal form. 1/449 useless extension candidates. Maximal degree in co-relation 1970. Up to 160 conditions per place. [2022-07-21 09:00:13,116 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 54 selfloop transitions, 21 changer transitions 28/162 dead transitions. [2022-07-21 09:00:13,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 162 transitions, 1445 flow [2022-07-21 09:00:13,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 09:00:13,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 09:00:13,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1414 transitions. [2022-07-21 09:00:13,118 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6601307189542484 [2022-07-21 09:00:13,119 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1414 transitions. [2022-07-21 09:00:13,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1414 transitions. [2022-07-21 09:00:13,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:13,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1414 transitions. [2022-07-21 09:00:13,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 67.33333333333333) internal successors, (1414), 21 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:13,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:13,125 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:13,125 INFO L186 Difference]: Start difference. First operand has 175 places, 117 transitions, 709 flow. Second operand 21 states and 1414 transitions. [2022-07-21 09:00:13,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 162 transitions, 1445 flow [2022-07-21 09:00:13,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 162 transitions, 1347 flow, removed 43 selfloop flow, removed 11 redundant places. [2022-07-21 09:00:13,160 INFO L242 Difference]: Finished difference. Result has 184 places, 119 transitions, 808 flow [2022-07-21 09:00:13,160 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=808, PETRI_PLACES=184, PETRI_TRANSITIONS=119} [2022-07-21 09:00:13,160 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 93 predicate places. [2022-07-21 09:00:13,161 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 119 transitions, 808 flow [2022-07-21 09:00:13,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:13,161 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:13,161 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] [2022-07-21 09:00:13,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 09:00:13,161 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:13,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:13,162 INFO L85 PathProgramCache]: Analyzing trace with hash 2009897988, now seen corresponding path program 15 times [2022-07-21 09:00:13,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:13,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220533289] [2022-07-21 09:00:13,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:13,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:13,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:13,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:13,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220533289] [2022-07-21 09:00:13,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220533289] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:13,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:13,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:13,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332090953] [2022-07-21 09:00:13,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:13,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:13,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:13,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:13,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:13,267 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:13,268 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 119 transitions, 808 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:13,268 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:13,268 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:13,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:13,541 INFO L129 PetriNetUnfolder]: 99/458 cut-off events. [2022-07-21 09:00:13,541 INFO L130 PetriNetUnfolder]: For 2894/2900 co-relation queries the response was YES. [2022-07-21 09:00:13,545 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2126 conditions, 458 events. 99/458 cut-off events. For 2894/2900 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2293 event pairs, 44 based on Foata normal form. 1/452 useless extension candidates. Maximal degree in co-relation 2069. Up to 165 conditions per place. [2022-07-21 09:00:13,548 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 59 selfloop transitions, 22 changer transitions 25/165 dead transitions. [2022-07-21 09:00:13,548 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 165 transitions, 1527 flow [2022-07-21 09:00:13,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 09:00:13,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 09:00:13,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1088 transitions. [2022-07-21 09:00:13,550 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2022-07-21 09:00:13,550 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1088 transitions. [2022-07-21 09:00:13,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1088 transitions. [2022-07-21 09:00:13,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:13,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1088 transitions. [2022-07-21 09:00:13,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 68.0) internal successors, (1088), 16 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:13,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:13,555 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:13,555 INFO L186 Difference]: Start difference. First operand has 184 places, 119 transitions, 808 flow. Second operand 16 states and 1088 transitions. [2022-07-21 09:00:13,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 165 transitions, 1527 flow [2022-07-21 09:00:13,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 165 transitions, 1382 flow, removed 47 selfloop flow, removed 16 redundant places. [2022-07-21 09:00:13,590 INFO L242 Difference]: Finished difference. Result has 179 places, 124 transitions, 870 flow [2022-07-21 09:00:13,590 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=870, PETRI_PLACES=179, PETRI_TRANSITIONS=124} [2022-07-21 09:00:13,591 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 88 predicate places. [2022-07-21 09:00:13,591 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 124 transitions, 870 flow [2022-07-21 09:00:13,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:13,591 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:13,591 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] [2022-07-21 09:00:13,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 09:00:13,592 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:13,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:13,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1611609298, now seen corresponding path program 16 times [2022-07-21 09:00:13,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:13,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097384700] [2022-07-21 09:00:13,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:13,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:13,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:13,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:13,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097384700] [2022-07-21 09:00:13,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097384700] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:13,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:13,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:13,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014425984] [2022-07-21 09:00:13,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:13,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:13,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:13,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:13,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:13,688 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:13,689 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 124 transitions, 870 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:13,689 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:13,689 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:13,689 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:13,958 INFO L129 PetriNetUnfolder]: 90/424 cut-off events. [2022-07-21 09:00:13,959 INFO L130 PetriNetUnfolder]: For 2145/2151 co-relation queries the response was YES. [2022-07-21 09:00:13,962 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1887 conditions, 424 events. 90/424 cut-off events. For 2145/2151 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2078 event pairs, 44 based on Foata normal form. 1/418 useless extension candidates. Maximal degree in co-relation 1834. Up to 159 conditions per place. [2022-07-21 09:00:13,964 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 55 selfloop transitions, 10 changer transitions 30/154 dead transitions. [2022-07-21 09:00:13,964 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 154 transitions, 1324 flow [2022-07-21 09:00:13,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:13,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:13,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1210 transitions. [2022-07-21 09:00:13,967 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.659041394335512 [2022-07-21 09:00:13,967 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1210 transitions. [2022-07-21 09:00:13,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1210 transitions. [2022-07-21 09:00:13,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:13,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1210 transitions. [2022-07-21 09:00:13,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.22222222222223) internal successors, (1210), 18 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:13,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:13,972 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:13,972 INFO L186 Difference]: Start difference. First operand has 179 places, 124 transitions, 870 flow. Second operand 18 states and 1210 transitions. [2022-07-21 09:00:13,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 154 transitions, 1324 flow [2022-07-21 09:00:13,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 154 transitions, 1220 flow, removed 30 selfloop flow, removed 9 redundant places. [2022-07-21 09:00:13,985 INFO L242 Difference]: Finished difference. Result has 187 places, 109 transitions, 629 flow [2022-07-21 09:00:13,986 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=629, PETRI_PLACES=187, PETRI_TRANSITIONS=109} [2022-07-21 09:00:13,986 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 96 predicate places. [2022-07-21 09:00:13,986 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 109 transitions, 629 flow [2022-07-21 09:00:13,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:13,987 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:13,987 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] [2022-07-21 09:00:13,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 09:00:13,987 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:13,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:13,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1377986538, now seen corresponding path program 17 times [2022-07-21 09:00:13,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:13,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889864618] [2022-07-21 09:00:13,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:13,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:14,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:14,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:14,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889864618] [2022-07-21 09:00:14,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889864618] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:14,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:14,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:14,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170562794] [2022-07-21 09:00:14,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:14,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:14,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:14,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:14,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:14,105 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:14,105 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 109 transitions, 629 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:14,106 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:14,106 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:14,106 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:14,422 INFO L129 PetriNetUnfolder]: 95/429 cut-off events. [2022-07-21 09:00:14,422 INFO L130 PetriNetUnfolder]: For 2214/2220 co-relation queries the response was YES. [2022-07-21 09:00:14,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1925 conditions, 429 events. 95/429 cut-off events. For 2214/2220 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2078 event pairs, 45 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 1871. Up to 159 conditions per place. [2022-07-21 09:00:14,428 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 48 selfloop transitions, 20 changer transitions 23/150 dead transitions. [2022-07-21 09:00:14,428 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 150 transitions, 1283 flow [2022-07-21 09:00:14,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:14,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:14,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1218 transitions. [2022-07-21 09:00:14,430 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6633986928104575 [2022-07-21 09:00:14,431 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1218 transitions. [2022-07-21 09:00:14,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1218 transitions. [2022-07-21 09:00:14,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:14,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1218 transitions. [2022-07-21 09:00:14,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.66666666666667) internal successors, (1218), 18 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:14,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:14,436 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:14,436 INFO L186 Difference]: Start difference. First operand has 187 places, 109 transitions, 629 flow. Second operand 18 states and 1218 transitions. [2022-07-21 09:00:14,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 150 transitions, 1283 flow [2022-07-21 09:00:14,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 150 transitions, 1156 flow, removed 24 selfloop flow, removed 17 redundant places. [2022-07-21 09:00:14,470 INFO L242 Difference]: Finished difference. Result has 173 places, 118 transitions, 780 flow [2022-07-21 09:00:14,471 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=780, PETRI_PLACES=173, PETRI_TRANSITIONS=118} [2022-07-21 09:00:14,471 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 82 predicate places. [2022-07-21 09:00:14,471 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 118 transitions, 780 flow [2022-07-21 09:00:14,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:14,472 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:14,472 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:14,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 09:00:14,472 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:14,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:14,472 INFO L85 PathProgramCache]: Analyzing trace with hash -56417466, now seen corresponding path program 18 times [2022-07-21 09:00:14,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:14,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936595836] [2022-07-21 09:00:14,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:14,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:14,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:14,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:14,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936595836] [2022-07-21 09:00:14,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936595836] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:14,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:14,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:14,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851259375] [2022-07-21 09:00:14,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:14,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:14,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:14,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:14,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:14,613 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:14,613 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 118 transitions, 780 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:14,613 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:14,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:14,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:14,909 INFO L129 PetriNetUnfolder]: 91/433 cut-off events. [2022-07-21 09:00:14,910 INFO L130 PetriNetUnfolder]: For 2017/2023 co-relation queries the response was YES. [2022-07-21 09:00:14,913 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1868 conditions, 433 events. 91/433 cut-off events. For 2017/2023 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2112 event pairs, 41 based on Foata normal form. 1/428 useless extension candidates. Maximal degree in co-relation 1817. Up to 159 conditions per place. [2022-07-21 09:00:14,915 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 49 selfloop transitions, 22 changer transitions 24/154 dead transitions. [2022-07-21 09:00:14,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 154 transitions, 1365 flow [2022-07-21 09:00:14,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 09:00:14,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 09:00:14,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1154 transitions. [2022-07-21 09:00:14,917 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6655132641291811 [2022-07-21 09:00:14,917 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1154 transitions. [2022-07-21 09:00:14,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1154 transitions. [2022-07-21 09:00:14,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:14,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1154 transitions. [2022-07-21 09:00:14,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.88235294117646) internal successors, (1154), 17 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:14,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:14,922 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:14,922 INFO L186 Difference]: Start difference. First operand has 173 places, 118 transitions, 780 flow. Second operand 17 states and 1154 transitions. [2022-07-21 09:00:14,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 154 transitions, 1365 flow [2022-07-21 09:00:14,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 154 transitions, 1282 flow, removed 37 selfloop flow, removed 5 redundant places. [2022-07-21 09:00:14,935 INFO L242 Difference]: Finished difference. Result has 185 places, 122 transitions, 877 flow [2022-07-21 09:00:14,936 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=877, PETRI_PLACES=185, PETRI_TRANSITIONS=122} [2022-07-21 09:00:14,936 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 94 predicate places. [2022-07-21 09:00:14,936 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 122 transitions, 877 flow [2022-07-21 09:00:14,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:14,937 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:14,937 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] [2022-07-21 09:00:14,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 09:00:14,937 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:14,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:14,938 INFO L85 PathProgramCache]: Analyzing trace with hash 679177784, now seen corresponding path program 19 times [2022-07-21 09:00:14,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:14,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210747784] [2022-07-21 09:00:14,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:14,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:15,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:15,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:15,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210747784] [2022-07-21 09:00:15,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210747784] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:15,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:15,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:15,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674571433] [2022-07-21 09:00:15,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:15,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:15,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:15,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:15,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:15,045 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:15,046 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 122 transitions, 877 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:15,046 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:15,046 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:15,046 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:15,320 INFO L129 PetriNetUnfolder]: 85/416 cut-off events. [2022-07-21 09:00:15,320 INFO L130 PetriNetUnfolder]: For 1946/1952 co-relation queries the response was YES. [2022-07-21 09:00:15,323 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1809 conditions, 416 events. 85/416 cut-off events. For 1946/1952 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1972 event pairs, 41 based on Foata normal form. 1/411 useless extension candidates. Maximal degree in co-relation 1752. Up to 159 conditions per place. [2022-07-21 09:00:15,326 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 47 selfloop transitions, 13 changer transitions 28/147 dead transitions. [2022-07-21 09:00:15,326 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 147 transitions, 1301 flow [2022-07-21 09:00:15,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:15,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:15,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1213 transitions. [2022-07-21 09:00:15,331 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6606753812636166 [2022-07-21 09:00:15,332 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1213 transitions. [2022-07-21 09:00:15,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1213 transitions. [2022-07-21 09:00:15,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:15,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1213 transitions. [2022-07-21 09:00:15,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.38888888888889) internal successors, (1213), 18 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:15,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:15,339 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:15,339 INFO L186 Difference]: Start difference. First operand has 185 places, 122 transitions, 877 flow. Second operand 18 states and 1213 transitions. [2022-07-21 09:00:15,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 147 transitions, 1301 flow [2022-07-21 09:00:15,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 147 transitions, 1194 flow, removed 33 selfloop flow, removed 8 redundant places. [2022-07-21 09:00:15,353 INFO L242 Difference]: Finished difference. Result has 194 places, 113 transitions, 712 flow [2022-07-21 09:00:15,353 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=712, PETRI_PLACES=194, PETRI_TRANSITIONS=113} [2022-07-21 09:00:15,354 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 103 predicate places. [2022-07-21 09:00:15,354 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 113 transitions, 712 flow [2022-07-21 09:00:15,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:15,354 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:15,355 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] [2022-07-21 09:00:15,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 09:00:15,355 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:15,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:15,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1228370036, now seen corresponding path program 20 times [2022-07-21 09:00:15,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:15,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213809262] [2022-07-21 09:00:15,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:15,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:15,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:15,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:15,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213809262] [2022-07-21 09:00:15,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213809262] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:15,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:15,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:15,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516025797] [2022-07-21 09:00:15,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:15,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:15,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:15,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:15,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:15,454 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:15,455 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 113 transitions, 712 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:15,455 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:15,455 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:15,455 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:15,677 INFO L129 PetriNetUnfolder]: 77/347 cut-off events. [2022-07-21 09:00:15,677 INFO L130 PetriNetUnfolder]: For 1602/1608 co-relation queries the response was YES. [2022-07-21 09:00:15,680 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1498 conditions, 347 events. 77/347 cut-off events. For 1602/1608 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1513 event pairs, 42 based on Foata normal form. 1/341 useless extension candidates. Maximal degree in co-relation 1439. Up to 137 conditions per place. [2022-07-21 09:00:15,682 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 37 selfloop transitions, 2 changer transitions 36/129 dead transitions. [2022-07-21 09:00:15,682 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 129 transitions, 973 flow [2022-07-21 09:00:15,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 09:00:15,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 09:00:15,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1141 transitions. [2022-07-21 09:00:15,684 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6580161476355249 [2022-07-21 09:00:15,685 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1141 transitions. [2022-07-21 09:00:15,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1141 transitions. [2022-07-21 09:00:15,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:15,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1141 transitions. [2022-07-21 09:00:15,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.11764705882354) internal successors, (1141), 17 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:15,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:15,692 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:15,693 INFO L186 Difference]: Start difference. First operand has 194 places, 113 transitions, 712 flow. Second operand 17 states and 1141 transitions. [2022-07-21 09:00:15,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 129 transitions, 973 flow [2022-07-21 09:00:15,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 129 transitions, 869 flow, removed 27 selfloop flow, removed 21 redundant places. [2022-07-21 09:00:15,704 INFO L242 Difference]: Finished difference. Result has 175 places, 87 transitions, 355 flow [2022-07-21 09:00:15,704 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=355, PETRI_PLACES=175, PETRI_TRANSITIONS=87} [2022-07-21 09:00:15,704 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 84 predicate places. [2022-07-21 09:00:15,705 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 87 transitions, 355 flow [2022-07-21 09:00:15,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:15,705 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:15,706 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] [2022-07-21 09:00:15,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 09:00:15,706 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:15,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:15,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1641653018, now seen corresponding path program 1 times [2022-07-21 09:00:15,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:15,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610661264] [2022-07-21 09:00:15,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:15,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:15,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:15,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:15,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610661264] [2022-07-21 09:00:15,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610661264] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:15,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:15,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:00:15,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820777954] [2022-07-21 09:00:15,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:15,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:00:15,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:15,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:00:15,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:00:15,758 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-07-21 09:00:15,759 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 87 transitions, 355 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:15,759 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:15,759 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-07-21 09:00:15,759 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:15,800 INFO L129 PetriNetUnfolder]: 30/224 cut-off events. [2022-07-21 09:00:15,801 INFO L130 PetriNetUnfolder]: For 751/751 co-relation queries the response was YES. [2022-07-21 09:00:15,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 224 events. 30/224 cut-off events. For 751/751 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 751 event pairs, 25 based on Foata normal form. 1/218 useless extension candidates. Maximal degree in co-relation 703. Up to 25 conditions per place. [2022-07-21 09:00:15,803 INFO L132 encePairwiseOnDemand]: 98/102 looper letters, 17 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2022-07-21 09:00:15,803 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 90 transitions, 404 flow [2022-07-21 09:00:15,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 09:00:15,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-21 09:00:15,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 347 transitions. [2022-07-21 09:00:15,805 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8504901960784313 [2022-07-21 09:00:15,805 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 347 transitions. [2022-07-21 09:00:15,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 347 transitions. [2022-07-21 09:00:15,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:15,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 347 transitions. [2022-07-21 09:00:15,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:15,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:15,807 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:15,807 INFO L186 Difference]: Start difference. First operand has 175 places, 87 transitions, 355 flow. Second operand 4 states and 347 transitions. [2022-07-21 09:00:15,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 90 transitions, 404 flow [2022-07-21 09:00:15,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 90 transitions, 347 flow, removed 16 selfloop flow, removed 23 redundant places. [2022-07-21 09:00:15,813 INFO L242 Difference]: Finished difference. Result has 120 places, 87 transitions, 307 flow [2022-07-21 09:00:15,814 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=307, PETRI_PLACES=120, PETRI_TRANSITIONS=87} [2022-07-21 09:00:15,815 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 29 predicate places. [2022-07-21 09:00:15,815 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 87 transitions, 307 flow [2022-07-21 09:00:15,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:15,815 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:15,815 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] [2022-07-21 09:00:15,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 09:00:15,816 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:15,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:15,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2143138146, now seen corresponding path program 2 times [2022-07-21 09:00:15,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:15,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941126838] [2022-07-21 09:00:15,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:15,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:15,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:15,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:15,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941126838] [2022-07-21 09:00:15,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941126838] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:15,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:15,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:00:15,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682018594] [2022-07-21 09:00:15,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:15,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:00:15,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:15,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:00:15,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:00:15,861 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-07-21 09:00:15,862 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 87 transitions, 307 flow. Second operand has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:15,862 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:15,862 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-07-21 09:00:15,862 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:15,898 INFO L129 PetriNetUnfolder]: 17/172 cut-off events. [2022-07-21 09:00:15,899 INFO L130 PetriNetUnfolder]: For 310/310 co-relation queries the response was YES. [2022-07-21 09:00:15,900 INFO L84 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 172 events. 17/172 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 493 event pairs, 10 based on Foata normal form. 2/171 useless extension candidates. Maximal degree in co-relation 440. Up to 17 conditions per place. [2022-07-21 09:00:15,900 INFO L132 encePairwiseOnDemand]: 97/102 looper letters, 15 selfloop transitions, 6 changer transitions 6/92 dead transitions. [2022-07-21 09:00:15,901 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 92 transitions, 371 flow [2022-07-21 09:00:15,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:00:15,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 09:00:15,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 433 transitions. [2022-07-21 09:00:15,902 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8490196078431372 [2022-07-21 09:00:15,902 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 433 transitions. [2022-07-21 09:00:15,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 433 transitions. [2022-07-21 09:00:15,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:15,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 433 transitions. [2022-07-21 09:00:15,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:15,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:15,905 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:15,905 INFO L186 Difference]: Start difference. First operand has 120 places, 87 transitions, 307 flow. Second operand 5 states and 433 transitions. [2022-07-21 09:00:15,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 92 transitions, 371 flow [2022-07-21 09:00:15,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 92 transitions, 340 flow, removed 13 selfloop flow, removed 4 redundant places. [2022-07-21 09:00:15,908 INFO L242 Difference]: Finished difference. Result has 121 places, 83 transitions, 273 flow [2022-07-21 09:00:15,908 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=273, PETRI_PLACES=121, PETRI_TRANSITIONS=83} [2022-07-21 09:00:15,909 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 30 predicate places. [2022-07-21 09:00:15,909 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 83 transitions, 273 flow [2022-07-21 09:00:15,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:15,909 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:15,910 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] [2022-07-21 09:00:15,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-21 09:00:15,910 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:15,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:15,910 INFO L85 PathProgramCache]: Analyzing trace with hash -384437336, now seen corresponding path program 1 times [2022-07-21 09:00:15,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:15,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751342210] [2022-07-21 09:00:15,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:15,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:16,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:16,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:16,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751342210] [2022-07-21 09:00:16,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751342210] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:16,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:16,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:16,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226039176] [2022-07-21 09:00:16,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:16,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:16,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:16,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:16,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:16,018 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:16,019 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 83 transitions, 273 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:16,019 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:16,019 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:16,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:16,294 INFO L129 PetriNetUnfolder]: 49/241 cut-off events. [2022-07-21 09:00:16,294 INFO L130 PetriNetUnfolder]: For 426/427 co-relation queries the response was YES. [2022-07-21 09:00:16,295 INFO L84 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 241 events. 49/241 cut-off events. For 426/427 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 859 event pairs, 0 based on Foata normal form. 1/242 useless extension candidates. Maximal degree in co-relation 700. Up to 35 conditions per place. [2022-07-21 09:00:16,296 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 47 selfloop transitions, 5 changer transitions 41/148 dead transitions. [2022-07-21 09:00:16,296 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 148 transitions, 888 flow [2022-07-21 09:00:16,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 09:00:16,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 09:00:16,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1606 transitions. [2022-07-21 09:00:16,299 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6560457516339869 [2022-07-21 09:00:16,299 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1606 transitions. [2022-07-21 09:00:16,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1606 transitions. [2022-07-21 09:00:16,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:16,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1606 transitions. [2022-07-21 09:00:16,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 66.91666666666667) internal successors, (1606), 24 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:16,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:16,305 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:16,306 INFO L186 Difference]: Start difference. First operand has 121 places, 83 transitions, 273 flow. Second operand 24 states and 1606 transitions. [2022-07-21 09:00:16,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 148 transitions, 888 flow [2022-07-21 09:00:16,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 148 transitions, 796 flow, removed 41 selfloop flow, removed 8 redundant places. [2022-07-21 09:00:16,311 INFO L242 Difference]: Finished difference. Result has 147 places, 83 transitions, 296 flow [2022-07-21 09:00:16,311 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=296, PETRI_PLACES=147, PETRI_TRANSITIONS=83} [2022-07-21 09:00:16,315 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 56 predicate places. [2022-07-21 09:00:16,315 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 83 transitions, 296 flow [2022-07-21 09:00:16,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:16,315 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:16,316 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] [2022-07-21 09:00:16,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-21 09:00:16,318 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:16,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:16,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1395475274, now seen corresponding path program 2 times [2022-07-21 09:00:16,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:16,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021643967] [2022-07-21 09:00:16,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:16,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:16,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:16,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:16,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021643967] [2022-07-21 09:00:16,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021643967] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:16,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:16,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:16,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356919434] [2022-07-21 09:00:16,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:16,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:16,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:16,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:16,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:16,425 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:16,425 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 83 transitions, 296 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:16,425 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:16,425 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:16,425 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:16,759 INFO L129 PetriNetUnfolder]: 43/235 cut-off events. [2022-07-21 09:00:16,760 INFO L130 PetriNetUnfolder]: For 937/938 co-relation queries the response was YES. [2022-07-21 09:00:16,761 INFO L84 FinitePrefix]: Finished finitePrefix Result has 879 conditions, 235 events. 43/235 cut-off events. For 937/938 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 798 event pairs, 5 based on Foata normal form. 1/232 useless extension candidates. Maximal degree in co-relation 837. Up to 27 conditions per place. [2022-07-21 09:00:16,762 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 46 selfloop transitions, 5 changer transitions 40/146 dead transitions. [2022-07-21 09:00:16,762 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 146 transitions, 985 flow [2022-07-21 09:00:16,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 09:00:16,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 09:00:16,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1604 transitions. [2022-07-21 09:00:16,765 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6552287581699346 [2022-07-21 09:00:16,765 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1604 transitions. [2022-07-21 09:00:16,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1604 transitions. [2022-07-21 09:00:16,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:16,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1604 transitions. [2022-07-21 09:00:16,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 66.83333333333333) internal successors, (1604), 24 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:16,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:16,771 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:16,771 INFO L186 Difference]: Start difference. First operand has 147 places, 83 transitions, 296 flow. Second operand 24 states and 1604 transitions. [2022-07-21 09:00:16,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 146 transitions, 985 flow [2022-07-21 09:00:16,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 146 transitions, 816 flow, removed 47 selfloop flow, removed 20 redundant places. [2022-07-21 09:00:16,776 INFO L242 Difference]: Finished difference. Result has 151 places, 83 transitions, 308 flow [2022-07-21 09:00:16,777 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=308, PETRI_PLACES=151, PETRI_TRANSITIONS=83} [2022-07-21 09:00:16,777 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 60 predicate places. [2022-07-21 09:00:16,778 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 83 transitions, 308 flow [2022-07-21 09:00:16,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:16,778 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:16,778 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] [2022-07-21 09:00:16,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-21 09:00:16,779 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:16,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:16,779 INFO L85 PathProgramCache]: Analyzing trace with hash 751505554, now seen corresponding path program 3 times [2022-07-21 09:00:16,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:16,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921762195] [2022-07-21 09:00:16,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:16,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:16,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:16,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:16,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921762195] [2022-07-21 09:00:16,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921762195] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:16,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:16,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:16,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917615354] [2022-07-21 09:00:16,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:16,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:16,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:16,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:16,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:16,873 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:16,874 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 83 transitions, 308 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:16,874 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:16,874 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:16,874 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:17,144 INFO L129 PetriNetUnfolder]: 55/276 cut-off events. [2022-07-21 09:00:17,145 INFO L130 PetriNetUnfolder]: For 1467/1469 co-relation queries the response was YES. [2022-07-21 09:00:17,146 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1138 conditions, 276 events. 55/276 cut-off events. For 1467/1469 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1067 event pairs, 9 based on Foata normal form. 1/276 useless extension candidates. Maximal degree in co-relation 1093. Up to 57 conditions per place. [2022-07-21 09:00:17,152 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 45 selfloop transitions, 12 changer transitions 32/144 dead transitions. [2022-07-21 09:00:17,152 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 144 transitions, 1071 flow [2022-07-21 09:00:17,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 09:00:17,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-21 09:00:17,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1476 transitions. [2022-07-21 09:00:17,156 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6577540106951871 [2022-07-21 09:00:17,156 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1476 transitions. [2022-07-21 09:00:17,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1476 transitions. [2022-07-21 09:00:17,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:17,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1476 transitions. [2022-07-21 09:00:17,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 67.0909090909091) internal successors, (1476), 22 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:17,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:17,161 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:17,162 INFO L186 Difference]: Start difference. First operand has 151 places, 83 transitions, 308 flow. Second operand 22 states and 1476 transitions. [2022-07-21 09:00:17,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 144 transitions, 1071 flow [2022-07-21 09:00:17,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 144 transitions, 901 flow, removed 50 selfloop flow, removed 20 redundant places. [2022-07-21 09:00:17,167 INFO L242 Difference]: Finished difference. Result has 149 places, 93 transitions, 435 flow [2022-07-21 09:00:17,168 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=435, PETRI_PLACES=149, PETRI_TRANSITIONS=93} [2022-07-21 09:00:17,169 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 58 predicate places. [2022-07-21 09:00:17,169 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 93 transitions, 435 flow [2022-07-21 09:00:17,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:17,169 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:17,170 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] [2022-07-21 09:00:17,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-21 09:00:17,170 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:17,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:17,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1149913502, now seen corresponding path program 4 times [2022-07-21 09:00:17,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:17,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558988691] [2022-07-21 09:00:17,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:17,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:17,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:17,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:17,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558988691] [2022-07-21 09:00:17,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558988691] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:17,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:17,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:17,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727193655] [2022-07-21 09:00:17,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:17,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:17,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:17,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:17,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:17,271 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:17,272 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 93 transitions, 435 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:17,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:17,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:17,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:17,555 INFO L129 PetriNetUnfolder]: 71/322 cut-off events. [2022-07-21 09:00:17,556 INFO L130 PetriNetUnfolder]: For 2027/2035 co-relation queries the response was YES. [2022-07-21 09:00:17,558 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1458 conditions, 322 events. 71/322 cut-off events. For 2027/2035 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1371 event pairs, 19 based on Foata normal form. 1/320 useless extension candidates. Maximal degree in co-relation 1414. Up to 71 conditions per place. [2022-07-21 09:00:17,560 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 48 selfloop transitions, 17 changer transitions 32/152 dead transitions. [2022-07-21 09:00:17,560 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 152 transitions, 1261 flow [2022-07-21 09:00:17,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 09:00:17,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 09:00:17,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1415 transitions. [2022-07-21 09:00:17,563 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6605975723622782 [2022-07-21 09:00:17,563 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1415 transitions. [2022-07-21 09:00:17,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1415 transitions. [2022-07-21 09:00:17,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:17,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1415 transitions. [2022-07-21 09:00:17,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 67.38095238095238) internal successors, (1415), 21 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:17,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:17,568 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:17,568 INFO L186 Difference]: Start difference. First operand has 149 places, 93 transitions, 435 flow. Second operand 21 states and 1415 transitions. [2022-07-21 09:00:17,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 152 transitions, 1261 flow [2022-07-21 09:00:17,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 152 transitions, 1035 flow, removed 113 selfloop flow, removed 11 redundant places. [2022-07-21 09:00:17,576 INFO L242 Difference]: Finished difference. Result has 161 places, 103 transitions, 566 flow [2022-07-21 09:00:17,576 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=566, PETRI_PLACES=161, PETRI_TRANSITIONS=103} [2022-07-21 09:00:17,577 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 70 predicate places. [2022-07-21 09:00:17,577 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 103 transitions, 566 flow [2022-07-21 09:00:17,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:17,577 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:17,578 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] [2022-07-21 09:00:17,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-21 09:00:17,578 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:17,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:17,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1840832138, now seen corresponding path program 5 times [2022-07-21 09:00:17,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:17,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148412801] [2022-07-21 09:00:17,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:17,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:17,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:17,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:17,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148412801] [2022-07-21 09:00:17,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148412801] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:17,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:17,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:17,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615719393] [2022-07-21 09:00:17,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:17,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:17,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:17,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:17,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:17,692 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:17,692 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 103 transitions, 566 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:17,693 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:17,693 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:17,693 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:17,984 INFO L129 PetriNetUnfolder]: 66/321 cut-off events. [2022-07-21 09:00:17,985 INFO L130 PetriNetUnfolder]: For 2439/2452 co-relation queries the response was YES. [2022-07-21 09:00:17,987 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1555 conditions, 321 events. 66/321 cut-off events. For 2439/2452 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1431 event pairs, 17 based on Foata normal form. 4/321 useless extension candidates. Maximal degree in co-relation 1504. Up to 84 conditions per place. [2022-07-21 09:00:17,991 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 50 selfloop transitions, 20 changer transitions 36/161 dead transitions. [2022-07-21 09:00:17,991 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 161 transitions, 1468 flow [2022-07-21 09:00:17,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 09:00:17,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 09:00:17,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1345 transitions. [2022-07-21 09:00:17,994 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6593137254901961 [2022-07-21 09:00:17,994 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1345 transitions. [2022-07-21 09:00:17,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1345 transitions. [2022-07-21 09:00:17,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:17,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1345 transitions. [2022-07-21 09:00:17,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 67.25) internal successors, (1345), 20 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:17,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:18,000 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:18,000 INFO L186 Difference]: Start difference. First operand has 161 places, 103 transitions, 566 flow. Second operand 20 states and 1345 transitions. [2022-07-21 09:00:18,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 161 transitions, 1468 flow [2022-07-21 09:00:18,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 161 transitions, 1302 flow, removed 78 selfloop flow, removed 13 redundant places. [2022-07-21 09:00:18,008 INFO L242 Difference]: Finished difference. Result has 169 places, 110 transitions, 716 flow [2022-07-21 09:00:18,009 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=716, PETRI_PLACES=169, PETRI_TRANSITIONS=110} [2022-07-21 09:00:18,010 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 78 predicate places. [2022-07-21 09:00:18,010 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 110 transitions, 716 flow [2022-07-21 09:00:18,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:18,010 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:18,010 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] [2022-07-21 09:00:18,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-21 09:00:18,011 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:18,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:18,011 INFO L85 PathProgramCache]: Analyzing trace with hash 894008134, now seen corresponding path program 6 times [2022-07-21 09:00:18,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:18,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378947452] [2022-07-21 09:00:18,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:18,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:18,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:18,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:18,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378947452] [2022-07-21 09:00:18,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378947452] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:18,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:18,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:18,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119605457] [2022-07-21 09:00:18,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:18,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:18,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:18,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:18,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:18,105 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:18,105 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 110 transitions, 716 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:18,106 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:18,106 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:18,106 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:18,370 INFO L129 PetriNetUnfolder]: 64/307 cut-off events. [2022-07-21 09:00:18,370 INFO L130 PetriNetUnfolder]: For 2312/2325 co-relation queries the response was YES. [2022-07-21 09:00:18,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1499 conditions, 307 events. 64/307 cut-off events. For 2312/2325 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1291 event pairs, 18 based on Foata normal form. 1/304 useless extension candidates. Maximal degree in co-relation 1445. Up to 69 conditions per place. [2022-07-21 09:00:18,374 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 55 selfloop transitions, 22 changer transitions 32/164 dead transitions. [2022-07-21 09:00:18,374 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 164 transitions, 1527 flow [2022-07-21 09:00:18,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 09:00:18,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 09:00:18,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1349 transitions. [2022-07-21 09:00:18,376 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6612745098039216 [2022-07-21 09:00:18,377 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1349 transitions. [2022-07-21 09:00:18,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1349 transitions. [2022-07-21 09:00:18,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:18,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1349 transitions. [2022-07-21 09:00:18,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 67.45) internal successors, (1349), 20 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:18,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:18,381 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:18,382 INFO L186 Difference]: Start difference. First operand has 169 places, 110 transitions, 716 flow. Second operand 20 states and 1349 transitions. [2022-07-21 09:00:18,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 164 transitions, 1527 flow [2022-07-21 09:00:18,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 164 transitions, 1345 flow, removed 78 selfloop flow, removed 13 redundant places. [2022-07-21 09:00:18,392 INFO L242 Difference]: Finished difference. Result has 180 places, 118 transitions, 828 flow [2022-07-21 09:00:18,392 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=828, PETRI_PLACES=180, PETRI_TRANSITIONS=118} [2022-07-21 09:00:18,393 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 89 predicate places. [2022-07-21 09:00:18,393 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 118 transitions, 828 flow [2022-07-21 09:00:18,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:18,393 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:18,393 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] [2022-07-21 09:00:18,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-21 09:00:18,394 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:18,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:18,394 INFO L85 PathProgramCache]: Analyzing trace with hash -122420418, now seen corresponding path program 7 times [2022-07-21 09:00:18,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:18,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371490129] [2022-07-21 09:00:18,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:18,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:18,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:18,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:18,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371490129] [2022-07-21 09:00:18,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371490129] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:18,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:18,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:18,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452003401] [2022-07-21 09:00:18,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:18,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:18,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:18,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:18,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:18,495 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:18,495 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 118 transitions, 828 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:18,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:18,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:18,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:18,721 INFO L129 PetriNetUnfolder]: 57/309 cut-off events. [2022-07-21 09:00:18,721 INFO L130 PetriNetUnfolder]: For 2525/2539 co-relation queries the response was YES. [2022-07-21 09:00:18,723 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1519 conditions, 309 events. 57/309 cut-off events. For 2525/2539 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1362 event pairs, 13 based on Foata normal form. 3/308 useless extension candidates. Maximal degree in co-relation 1460. Up to 78 conditions per place. [2022-07-21 09:00:18,725 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 53 selfloop transitions, 26 changer transitions 27/161 dead transitions. [2022-07-21 09:00:18,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 161 transitions, 1509 flow [2022-07-21 09:00:18,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 09:00:18,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 09:00:18,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1082 transitions. [2022-07-21 09:00:18,727 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6629901960784313 [2022-07-21 09:00:18,727 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1082 transitions. [2022-07-21 09:00:18,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1082 transitions. [2022-07-21 09:00:18,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:18,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1082 transitions. [2022-07-21 09:00:18,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 67.625) internal successors, (1082), 16 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:18,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:18,731 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:18,731 INFO L186 Difference]: Start difference. First operand has 180 places, 118 transitions, 828 flow. Second operand 16 states and 1082 transitions. [2022-07-21 09:00:18,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 161 transitions, 1509 flow [2022-07-21 09:00:18,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 161 transitions, 1373 flow, removed 58 selfloop flow, removed 13 redundant places. [2022-07-21 09:00:18,743 INFO L242 Difference]: Finished difference. Result has 179 places, 123 transitions, 886 flow [2022-07-21 09:00:18,744 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=886, PETRI_PLACES=179, PETRI_TRANSITIONS=123} [2022-07-21 09:00:18,744 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 88 predicate places. [2022-07-21 09:00:18,744 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 123 transitions, 886 flow [2022-07-21 09:00:18,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:18,745 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:18,745 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] [2022-07-21 09:00:18,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-21 09:00:18,745 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:18,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:18,745 INFO L85 PathProgramCache]: Analyzing trace with hash -427302442, now seen corresponding path program 8 times [2022-07-21 09:00:18,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:18,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683142758] [2022-07-21 09:00:18,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:18,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:18,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:18,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:18,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683142758] [2022-07-21 09:00:18,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683142758] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:18,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:18,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:18,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119936075] [2022-07-21 09:00:18,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:18,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:18,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:18,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:18,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:18,845 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:18,846 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 123 transitions, 886 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:18,846 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:18,846 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:18,846 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:19,094 INFO L129 PetriNetUnfolder]: 48/274 cut-off events. [2022-07-21 09:00:19,094 INFO L130 PetriNetUnfolder]: For 1694/1713 co-relation queries the response was YES. [2022-07-21 09:00:19,097 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 274 events. 48/274 cut-off events. For 1694/1713 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1096 event pairs, 9 based on Foata normal form. 7/279 useless extension candidates. Maximal degree in co-relation 1214. Up to 66 conditions per place. [2022-07-21 09:00:19,098 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 49 selfloop transitions, 14 changer transitions 35/153 dead transitions. [2022-07-21 09:00:19,098 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 153 transitions, 1341 flow [2022-07-21 09:00:19,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:19,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:19,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1207 transitions. [2022-07-21 09:00:19,100 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6574074074074074 [2022-07-21 09:00:19,100 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1207 transitions. [2022-07-21 09:00:19,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1207 transitions. [2022-07-21 09:00:19,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:19,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1207 transitions. [2022-07-21 09:00:19,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.05555555555556) internal successors, (1207), 18 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:19,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:19,105 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:19,105 INFO L186 Difference]: Start difference. First operand has 179 places, 123 transitions, 886 flow. Second operand 18 states and 1207 transitions. [2022-07-21 09:00:19,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 153 transitions, 1341 flow [2022-07-21 09:00:19,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 153 transitions, 1210 flow, removed 33 selfloop flow, removed 10 redundant places. [2022-07-21 09:00:19,116 INFO L242 Difference]: Finished difference. Result has 186 places, 108 transitions, 644 flow [2022-07-21 09:00:19,116 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=644, PETRI_PLACES=186, PETRI_TRANSITIONS=108} [2022-07-21 09:00:19,117 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 95 predicate places. [2022-07-21 09:00:19,117 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 108 transitions, 644 flow [2022-07-21 09:00:19,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:19,117 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:19,117 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] [2022-07-21 09:00:19,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-21 09:00:19,118 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:19,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:19,118 INFO L85 PathProgramCache]: Analyzing trace with hash -290657432, now seen corresponding path program 9 times [2022-07-21 09:00:19,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:19,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588576613] [2022-07-21 09:00:19,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:19,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:19,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:19,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:19,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588576613] [2022-07-21 09:00:19,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588576613] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:19,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:19,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:19,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162098328] [2022-07-21 09:00:19,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:19,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:19,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:19,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:19,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:19,215 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:19,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 108 transitions, 644 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:19,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:19,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:19,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:19,488 INFO L129 PetriNetUnfolder]: 50/275 cut-off events. [2022-07-21 09:00:19,489 INFO L130 PetriNetUnfolder]: For 1683/1696 co-relation queries the response was YES. [2022-07-21 09:00:19,491 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1290 conditions, 275 events. 50/275 cut-off events. For 1683/1696 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1070 event pairs, 13 based on Foata normal form. 3/275 useless extension candidates. Maximal degree in co-relation 1233. Up to 66 conditions per place. [2022-07-21 09:00:19,492 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 46 selfloop transitions, 22 changer transitions 25/148 dead transitions. [2022-07-21 09:00:19,492 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 148 transitions, 1273 flow [2022-07-21 09:00:19,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:19,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:19,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1213 transitions. [2022-07-21 09:00:19,494 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6606753812636166 [2022-07-21 09:00:19,494 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1213 transitions. [2022-07-21 09:00:19,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1213 transitions. [2022-07-21 09:00:19,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:19,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1213 transitions. [2022-07-21 09:00:19,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.38888888888889) internal successors, (1213), 18 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:19,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:19,499 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:19,499 INFO L186 Difference]: Start difference. First operand has 186 places, 108 transitions, 644 flow. Second operand 18 states and 1213 transitions. [2022-07-21 09:00:19,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 148 transitions, 1273 flow [2022-07-21 09:00:19,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 148 transitions, 1101 flow, removed 30 selfloop flow, removed 18 redundant places. [2022-07-21 09:00:19,509 INFO L242 Difference]: Finished difference. Result has 171 places, 117 transitions, 751 flow [2022-07-21 09:00:19,509 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=751, PETRI_PLACES=171, PETRI_TRANSITIONS=117} [2022-07-21 09:00:19,510 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 80 predicate places. [2022-07-21 09:00:19,510 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 117 transitions, 751 flow [2022-07-21 09:00:19,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:19,510 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:19,510 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] [2022-07-21 09:00:19,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-21 09:00:19,510 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:19,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:19,511 INFO L85 PathProgramCache]: Analyzing trace with hash 957146222, now seen corresponding path program 10 times [2022-07-21 09:00:19,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:19,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103735787] [2022-07-21 09:00:19,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:19,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:19,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:19,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:19,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103735787] [2022-07-21 09:00:19,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103735787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:19,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:19,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:19,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768087711] [2022-07-21 09:00:19,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:19,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:19,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:19,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:19,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:19,618 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:19,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 117 transitions, 751 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:19,619 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:19,619 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:19,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:19,886 INFO L129 PetriNetUnfolder]: 47/278 cut-off events. [2022-07-21 09:00:19,886 INFO L130 PetriNetUnfolder]: For 1271/1277 co-relation queries the response was YES. [2022-07-21 09:00:19,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1201 conditions, 278 events. 47/278 cut-off events. For 1271/1277 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1117 event pairs, 16 based on Foata normal form. 1/275 useless extension candidates. Maximal degree in co-relation 1148. Up to 66 conditions per place. [2022-07-21 09:00:19,889 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 47 selfloop transitions, 24 changer transitions 26/152 dead transitions. [2022-07-21 09:00:19,889 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 152 transitions, 1300 flow [2022-07-21 09:00:19,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 09:00:19,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 09:00:19,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1149 transitions. [2022-07-21 09:00:19,891 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6626297577854672 [2022-07-21 09:00:19,892 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1149 transitions. [2022-07-21 09:00:19,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1149 transitions. [2022-07-21 09:00:19,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:19,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1149 transitions. [2022-07-21 09:00:19,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.58823529411765) internal successors, (1149), 17 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:19,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:19,896 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:19,896 INFO L186 Difference]: Start difference. First operand has 171 places, 117 transitions, 751 flow. Second operand 17 states and 1149 transitions. [2022-07-21 09:00:19,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 152 transitions, 1300 flow [2022-07-21 09:00:19,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 152 transitions, 1215 flow, removed 37 selfloop flow, removed 5 redundant places. [2022-07-21 09:00:19,905 INFO L242 Difference]: Finished difference. Result has 183 places, 121 transitions, 835 flow [2022-07-21 09:00:19,906 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=835, PETRI_PLACES=183, PETRI_TRANSITIONS=121} [2022-07-21 09:00:19,906 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 92 predicate places. [2022-07-21 09:00:19,907 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 121 transitions, 835 flow [2022-07-21 09:00:19,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:19,907 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:19,907 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] [2022-07-21 09:00:19,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-21 09:00:19,908 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:19,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:19,910 INFO L85 PathProgramCache]: Analyzing trace with hash -269503326, now seen corresponding path program 11 times [2022-07-21 09:00:19,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:19,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939229034] [2022-07-21 09:00:19,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:19,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:20,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:20,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:20,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939229034] [2022-07-21 09:00:20,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939229034] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:20,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:20,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:20,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106717075] [2022-07-21 09:00:20,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:20,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:20,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:20,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:20,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:20,016 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:20,016 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 121 transitions, 835 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:20,016 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:20,016 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:20,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:20,248 INFO L129 PetriNetUnfolder]: 44/270 cut-off events. [2022-07-21 09:00:20,249 INFO L130 PetriNetUnfolder]: For 1325/1337 co-relation queries the response was YES. [2022-07-21 09:00:20,250 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1179 conditions, 270 events. 44/270 cut-off events. For 1325/1337 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1067 event pairs, 12 based on Foata normal form. 3/270 useless extension candidates. Maximal degree in co-relation 1120. Up to 66 conditions per place. [2022-07-21 09:00:20,251 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 47 selfloop transitions, 14 changer transitions 34/150 dead transitions. [2022-07-21 09:00:20,251 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 150 transitions, 1283 flow [2022-07-21 09:00:20,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 09:00:20,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 09:00:20,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1148 transitions. [2022-07-21 09:00:20,253 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6620530565167243 [2022-07-21 09:00:20,253 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1148 transitions. [2022-07-21 09:00:20,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1148 transitions. [2022-07-21 09:00:20,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:20,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1148 transitions. [2022-07-21 09:00:20,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.52941176470588) internal successors, (1148), 17 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:20,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:20,257 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:20,257 INFO L186 Difference]: Start difference. First operand has 183 places, 121 transitions, 835 flow. Second operand 17 states and 1148 transitions. [2022-07-21 09:00:20,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 150 transitions, 1283 flow [2022-07-21 09:00:20,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 150 transitions, 1184 flow, removed 28 selfloop flow, removed 8 redundant places. [2022-07-21 09:00:20,267 INFO L242 Difference]: Finished difference. Result has 190 places, 112 transitions, 684 flow [2022-07-21 09:00:20,267 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=684, PETRI_PLACES=190, PETRI_TRANSITIONS=112} [2022-07-21 09:00:20,268 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 99 predicate places. [2022-07-21 09:00:20,268 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 112 transitions, 684 flow [2022-07-21 09:00:20,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:20,268 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:20,269 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] [2022-07-21 09:00:20,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-21 09:00:20,269 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:20,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:20,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1429820720, now seen corresponding path program 12 times [2022-07-21 09:00:20,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:20,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027194593] [2022-07-21 09:00:20,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:20,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:20,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:20,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:20,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027194593] [2022-07-21 09:00:20,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027194593] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:20,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:20,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:20,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226807068] [2022-07-21 09:00:20,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:20,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:20,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:20,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:20,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:20,372 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:20,373 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 112 transitions, 684 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:20,373 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:20,373 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:20,373 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:20,615 INFO L129 PetriNetUnfolder]: 34/228 cut-off events. [2022-07-21 09:00:20,616 INFO L130 PetriNetUnfolder]: For 1175/1187 co-relation queries the response was YES. [2022-07-21 09:00:20,617 INFO L84 FinitePrefix]: Finished finitePrefix Result has 949 conditions, 228 events. 34/228 cut-off events. For 1175/1187 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 782 event pairs, 9 based on Foata normal form. 3/229 useless extension candidates. Maximal degree in co-relation 889. Up to 53 conditions per place. [2022-07-21 09:00:20,618 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 37 selfloop transitions, 3 changer transitions 37/132 dead transitions. [2022-07-21 09:00:20,618 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 132 transitions, 979 flow [2022-07-21 09:00:20,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:20,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:20,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1203 transitions. [2022-07-21 09:00:20,620 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6552287581699346 [2022-07-21 09:00:20,620 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1203 transitions. [2022-07-21 09:00:20,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1203 transitions. [2022-07-21 09:00:20,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:20,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1203 transitions. [2022-07-21 09:00:20,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 66.83333333333333) internal successors, (1203), 18 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:20,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:20,625 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:20,625 INFO L186 Difference]: Start difference. First operand has 190 places, 112 transitions, 684 flow. Second operand 18 states and 1203 transitions. [2022-07-21 09:00:20,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 132 transitions, 979 flow [2022-07-21 09:00:20,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 132 transitions, 859 flow, removed 26 selfloop flow, removed 22 redundant places. [2022-07-21 09:00:20,634 INFO L242 Difference]: Finished difference. Result has 174 places, 92 transitions, 398 flow [2022-07-21 09:00:20,634 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=398, PETRI_PLACES=174, PETRI_TRANSITIONS=92} [2022-07-21 09:00:20,634 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 83 predicate places. [2022-07-21 09:00:20,634 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 92 transitions, 398 flow [2022-07-21 09:00:20,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:20,635 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:20,635 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] [2022-07-21 09:00:20,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-21 09:00:20,635 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:20,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:20,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1540704440, now seen corresponding path program 13 times [2022-07-21 09:00:20,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:20,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128925332] [2022-07-21 09:00:20,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:20,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:20,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:20,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:20,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128925332] [2022-07-21 09:00:20,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128925332] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:20,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:20,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:20,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292151764] [2022-07-21 09:00:20,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:20,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:20,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:20,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:20,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:20,731 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:20,732 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 92 transitions, 398 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:20,732 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:20,732 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:20,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:21,030 INFO L129 PetriNetUnfolder]: 39/251 cut-off events. [2022-07-21 09:00:21,030 INFO L130 PetriNetUnfolder]: For 1096/1097 co-relation queries the response was YES. [2022-07-21 09:00:21,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 966 conditions, 251 events. 39/251 cut-off events. For 1096/1097 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 889 event pairs, 5 based on Foata normal form. 1/252 useless extension candidates. Maximal degree in co-relation 915. Up to 33 conditions per place. [2022-07-21 09:00:21,033 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 43 selfloop transitions, 19 changer transitions 32/149 dead transitions. [2022-07-21 09:00:21,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 149 transitions, 1122 flow [2022-07-21 09:00:21,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 09:00:21,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-21 09:00:21,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1473 transitions. [2022-07-21 09:00:21,035 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6564171122994652 [2022-07-21 09:00:21,035 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1473 transitions. [2022-07-21 09:00:21,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1473 transitions. [2022-07-21 09:00:21,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:21,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1473 transitions. [2022-07-21 09:00:21,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 66.95454545454545) internal successors, (1473), 22 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:21,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:21,040 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:21,040 INFO L186 Difference]: Start difference. First operand has 174 places, 92 transitions, 398 flow. Second operand 22 states and 1473 transitions. [2022-07-21 09:00:21,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 149 transitions, 1122 flow [2022-07-21 09:00:21,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 149 transitions, 905 flow, removed 40 selfloop flow, removed 24 redundant places. [2022-07-21 09:00:21,046 INFO L242 Difference]: Finished difference. Result has 157 places, 103 transitions, 514 flow [2022-07-21 09:00:21,046 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=514, PETRI_PLACES=157, PETRI_TRANSITIONS=103} [2022-07-21 09:00:21,047 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 66 predicate places. [2022-07-21 09:00:21,047 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 103 transitions, 514 flow [2022-07-21 09:00:21,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:21,047 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:21,047 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] [2022-07-21 09:00:21,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-21 09:00:21,048 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:21,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:21,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1542843278, now seen corresponding path program 14 times [2022-07-21 09:00:21,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:21,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060404510] [2022-07-21 09:00:21,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:21,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:21,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:21,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:21,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060404510] [2022-07-21 09:00:21,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060404510] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:21,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:21,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:21,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911361326] [2022-07-21 09:00:21,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:21,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:21,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:21,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:21,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:21,159 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:21,160 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 103 transitions, 514 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:21,160 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:21,160 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:21,160 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:21,426 INFO L129 PetriNetUnfolder]: 36/233 cut-off events. [2022-07-21 09:00:21,426 INFO L130 PetriNetUnfolder]: For 740/741 co-relation queries the response was YES. [2022-07-21 09:00:21,428 INFO L84 FinitePrefix]: Finished finitePrefix Result has 914 conditions, 233 events. 36/233 cut-off events. For 740/741 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 779 event pairs, 6 based on Foata normal form. 1/232 useless extension candidates. Maximal degree in co-relation 868. Up to 31 conditions per place. [2022-07-21 09:00:21,429 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 39 selfloop transitions, 21 changer transitions 32/147 dead transitions. [2022-07-21 09:00:21,429 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 147 transitions, 1106 flow [2022-07-21 09:00:21,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 09:00:21,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 09:00:21,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1406 transitions. [2022-07-21 09:00:21,437 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6563958916900093 [2022-07-21 09:00:21,437 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1406 transitions. [2022-07-21 09:00:21,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1406 transitions. [2022-07-21 09:00:21,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:21,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1406 transitions. [2022-07-21 09:00:21,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 66.95238095238095) internal successors, (1406), 21 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:21,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:21,442 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:21,442 INFO L186 Difference]: Start difference. First operand has 157 places, 103 transitions, 514 flow. Second operand 21 states and 1406 transitions. [2022-07-21 09:00:21,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 147 transitions, 1106 flow [2022-07-21 09:00:21,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 147 transitions, 964 flow, removed 65 selfloop flow, removed 11 redundant places. [2022-07-21 09:00:21,449 INFO L242 Difference]: Finished difference. Result has 166 places, 105 transitions, 579 flow [2022-07-21 09:00:21,449 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=579, PETRI_PLACES=166, PETRI_TRANSITIONS=105} [2022-07-21 09:00:21,449 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 75 predicate places. [2022-07-21 09:00:21,449 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 105 transitions, 579 flow [2022-07-21 09:00:21,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:21,450 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:21,450 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] [2022-07-21 09:00:21,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-21 09:00:21,450 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:21,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:21,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1087685708, now seen corresponding path program 15 times [2022-07-21 09:00:21,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:21,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123405556] [2022-07-21 09:00:21,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:21,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:21,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:21,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:21,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123405556] [2022-07-21 09:00:21,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123405556] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:21,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:21,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:21,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539871217] [2022-07-21 09:00:21,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:21,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:21,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:21,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:21,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:21,539 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:21,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 105 transitions, 579 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:21,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:21,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:21,540 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:21,744 INFO L129 PetriNetUnfolder]: 33/230 cut-off events. [2022-07-21 09:00:21,744 INFO L130 PetriNetUnfolder]: For 970/971 co-relation queries the response was YES. [2022-07-21 09:00:21,745 INFO L84 FinitePrefix]: Finished finitePrefix Result has 949 conditions, 230 events. 33/230 cut-off events. For 970/971 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 770 event pairs, 3 based on Foata normal form. 1/230 useless extension candidates. Maximal degree in co-relation 899. Up to 36 conditions per place. [2022-07-21 09:00:21,746 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 39 selfloop transitions, 22 changer transitions 29/145 dead transitions. [2022-07-21 09:00:21,746 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 145 transitions, 1119 flow [2022-07-21 09:00:21,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 09:00:21,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 09:00:21,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1083 transitions. [2022-07-21 09:00:21,748 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6636029411764706 [2022-07-21 09:00:21,748 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1083 transitions. [2022-07-21 09:00:21,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1083 transitions. [2022-07-21 09:00:21,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:21,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1083 transitions. [2022-07-21 09:00:21,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 67.6875) internal successors, (1083), 16 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:21,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:21,753 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:21,753 INFO L186 Difference]: Start difference. First operand has 166 places, 105 transitions, 579 flow. Second operand 16 states and 1083 transitions. [2022-07-21 09:00:21,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 145 transitions, 1119 flow [2022-07-21 09:00:21,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 145 transitions, 976 flow, removed 46 selfloop flow, removed 17 redundant places. [2022-07-21 09:00:21,760 INFO L242 Difference]: Finished difference. Result has 160 places, 110 transitions, 626 flow [2022-07-21 09:00:21,760 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=626, PETRI_PLACES=160, PETRI_TRANSITIONS=110} [2022-07-21 09:00:21,761 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 69 predicate places. [2022-07-21 09:00:21,761 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 110 transitions, 626 flow [2022-07-21 09:00:21,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:21,762 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:21,762 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:21,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-21 09:00:21,762 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:21,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:21,763 INFO L85 PathProgramCache]: Analyzing trace with hash -470595522, now seen corresponding path program 16 times [2022-07-21 09:00:21,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:21,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656000952] [2022-07-21 09:00:21,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:21,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:21,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:21,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:21,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656000952] [2022-07-21 09:00:21,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656000952] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:21,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:21,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:21,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650610874] [2022-07-21 09:00:21,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:21,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:21,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:21,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:21,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:21,858 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:21,858 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 110 transitions, 626 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:21,858 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:21,859 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:21,859 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:22,046 INFO L129 PetriNetUnfolder]: 24/200 cut-off events. [2022-07-21 09:00:22,046 INFO L130 PetriNetUnfolder]: For 629/630 co-relation queries the response was YES. [2022-07-21 09:00:22,048 INFO L84 FinitePrefix]: Finished finitePrefix Result has 769 conditions, 200 events. 24/200 cut-off events. For 629/630 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 571 event pairs, 3 based on Foata normal form. 1/200 useless extension candidates. Maximal degree in co-relation 724. Up to 30 conditions per place. [2022-07-21 09:00:22,048 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 35 selfloop transitions, 10 changer transitions 34/134 dead transitions. [2022-07-21 09:00:22,048 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 134 transitions, 943 flow [2022-07-21 09:00:22,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:22,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:22,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1205 transitions. [2022-07-21 09:00:22,050 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.656318082788671 [2022-07-21 09:00:22,050 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1205 transitions. [2022-07-21 09:00:22,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1205 transitions. [2022-07-21 09:00:22,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:22,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1205 transitions. [2022-07-21 09:00:22,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 66.94444444444444) internal successors, (1205), 18 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:22,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:22,055 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:22,055 INFO L186 Difference]: Start difference. First operand has 160 places, 110 transitions, 626 flow. Second operand 18 states and 1205 transitions. [2022-07-21 09:00:22,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 134 transitions, 943 flow [2022-07-21 09:00:22,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 134 transitions, 839 flow, removed 30 selfloop flow, removed 10 redundant places. [2022-07-21 09:00:22,061 INFO L242 Difference]: Finished difference. Result has 167 places, 95 transitions, 426 flow [2022-07-21 09:00:22,061 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=426, PETRI_PLACES=167, PETRI_TRANSITIONS=95} [2022-07-21 09:00:22,068 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 76 predicate places. [2022-07-21 09:00:22,068 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 95 transitions, 426 flow [2022-07-21 09:00:22,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:22,069 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:22,069 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] [2022-07-21 09:00:22,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-21 09:00:22,069 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:22,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:22,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1047995534, now seen corresponding path program 17 times [2022-07-21 09:00:22,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:22,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349511753] [2022-07-21 09:00:22,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:22,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:22,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:22,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:22,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349511753] [2022-07-21 09:00:22,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349511753] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:22,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:22,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:22,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969793] [2022-07-21 09:00:22,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:22,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:22,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:22,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:22,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:22,161 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:22,161 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 95 transitions, 426 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:22,161 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:22,161 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:22,161 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:22,361 INFO L129 PetriNetUnfolder]: 29/213 cut-off events. [2022-07-21 09:00:22,361 INFO L130 PetriNetUnfolder]: For 695/696 co-relation queries the response was YES. [2022-07-21 09:00:22,362 INFO L84 FinitePrefix]: Finished finitePrefix Result has 801 conditions, 213 events. 29/213 cut-off events. For 695/696 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 646 event pairs, 4 based on Foata normal form. 1/212 useless extension candidates. Maximal degree in co-relation 756. Up to 30 conditions per place. [2022-07-21 09:00:22,363 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 33 selfloop transitions, 20 changer transitions 27/135 dead transitions. [2022-07-21 09:00:22,363 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 135 transitions, 946 flow [2022-07-21 09:00:22,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:22,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:22,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1210 transitions. [2022-07-21 09:00:22,364 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.659041394335512 [2022-07-21 09:00:22,364 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1210 transitions. [2022-07-21 09:00:22,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1210 transitions. [2022-07-21 09:00:22,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:22,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1210 transitions. [2022-07-21 09:00:22,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.22222222222223) internal successors, (1210), 18 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:22,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:22,367 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:22,367 INFO L186 Difference]: Start difference. First operand has 167 places, 95 transitions, 426 flow. Second operand 18 states and 1210 transitions. [2022-07-21 09:00:22,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 135 transitions, 946 flow [2022-07-21 09:00:22,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 135 transitions, 800 flow, removed 25 selfloop flow, removed 18 redundant places. [2022-07-21 09:00:22,373 INFO L242 Difference]: Finished difference. Result has 152 places, 104 transitions, 539 flow [2022-07-21 09:00:22,373 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=539, PETRI_PLACES=152, PETRI_TRANSITIONS=104} [2022-07-21 09:00:22,373 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 61 predicate places. [2022-07-21 09:00:22,373 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 104 transitions, 539 flow [2022-07-21 09:00:22,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:22,374 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:22,374 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] [2022-07-21 09:00:22,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-21 09:00:22,374 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:22,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:22,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1226403370, now seen corresponding path program 18 times [2022-07-21 09:00:22,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:22,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790657839] [2022-07-21 09:00:22,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:22,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:22,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:22,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:22,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790657839] [2022-07-21 09:00:22,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790657839] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:22,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:22,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:22,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584678033] [2022-07-21 09:00:22,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:22,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:22,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:22,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:22,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:22,469 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:22,470 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 104 transitions, 539 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:22,470 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:22,470 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:22,470 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:22,682 INFO L129 PetriNetUnfolder]: 25/211 cut-off events. [2022-07-21 09:00:22,682 INFO L130 PetriNetUnfolder]: For 493/494 co-relation queries the response was YES. [2022-07-21 09:00:22,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 211 events. 25/211 cut-off events. For 493/494 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 632 event pairs, 0 based on Foata normal form. 1/212 useless extension candidates. Maximal degree in co-relation 709. Up to 30 conditions per place. [2022-07-21 09:00:22,684 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 34 selfloop transitions, 22 changer transitions 28/139 dead transitions. [2022-07-21 09:00:22,684 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 139 transitions, 993 flow [2022-07-21 09:00:22,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 09:00:22,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 09:00:22,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1146 transitions. [2022-07-21 09:00:22,686 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6608996539792388 [2022-07-21 09:00:22,686 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1146 transitions. [2022-07-21 09:00:22,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1146 transitions. [2022-07-21 09:00:22,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:22,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1146 transitions. [2022-07-21 09:00:22,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.41176470588235) internal successors, (1146), 17 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:22,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:22,690 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:22,690 INFO L186 Difference]: Start difference. First operand has 152 places, 104 transitions, 539 flow. Second operand 17 states and 1146 transitions. [2022-07-21 09:00:22,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 139 transitions, 993 flow [2022-07-21 09:00:22,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 139 transitions, 912 flow, removed 36 selfloop flow, removed 5 redundant places. [2022-07-21 09:00:22,695 INFO L242 Difference]: Finished difference. Result has 164 places, 108 transitions, 621 flow [2022-07-21 09:00:22,696 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=621, PETRI_PLACES=164, PETRI_TRANSITIONS=108} [2022-07-21 09:00:22,696 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 73 predicate places. [2022-07-21 09:00:22,696 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 108 transitions, 621 flow [2022-07-21 09:00:22,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:22,696 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:22,697 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] [2022-07-21 09:00:22,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-21 09:00:22,697 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:22,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:22,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1919700962, now seen corresponding path program 19 times [2022-07-21 09:00:22,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:22,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048281601] [2022-07-21 09:00:22,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:22,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:22,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:22,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:22,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048281601] [2022-07-21 09:00:22,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048281601] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:22,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:22,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:22,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992042341] [2022-07-21 09:00:22,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:22,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:22,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:22,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:22,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:22,782 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:22,782 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 108 transitions, 621 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:22,782 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:22,782 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:22,782 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:22,982 INFO L129 PetriNetUnfolder]: 19/194 cut-off events. [2022-07-21 09:00:22,982 INFO L130 PetriNetUnfolder]: For 449/450 co-relation queries the response was YES. [2022-07-21 09:00:22,983 INFO L84 FinitePrefix]: Finished finitePrefix Result has 706 conditions, 194 events. 19/194 cut-off events. For 449/450 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 526 event pairs, 0 based on Foata normal form. 1/195 useless extension candidates. Maximal degree in co-relation 659. Up to 30 conditions per place. [2022-07-21 09:00:22,984 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 33 selfloop transitions, 12 changer transitions 33/133 dead transitions. [2022-07-21 09:00:22,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 133 transitions, 962 flow [2022-07-21 09:00:22,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 09:00:22,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 09:00:22,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1141 transitions. [2022-07-21 09:00:22,986 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6580161476355249 [2022-07-21 09:00:22,986 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1141 transitions. [2022-07-21 09:00:22,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1141 transitions. [2022-07-21 09:00:22,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:22,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1141 transitions. [2022-07-21 09:00:22,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.11764705882354) internal successors, (1141), 17 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:22,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:22,989 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:22,990 INFO L186 Difference]: Start difference. First operand has 164 places, 108 transitions, 621 flow. Second operand 17 states and 1141 transitions. [2022-07-21 09:00:22,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 133 transitions, 962 flow [2022-07-21 09:00:22,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 133 transitions, 861 flow, removed 30 selfloop flow, removed 9 redundant places. [2022-07-21 09:00:22,995 INFO L242 Difference]: Finished difference. Result has 170 places, 99 transitions, 476 flow [2022-07-21 09:00:22,996 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=476, PETRI_PLACES=170, PETRI_TRANSITIONS=99} [2022-07-21 09:00:22,996 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 79 predicate places. [2022-07-21 09:00:22,996 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 99 transitions, 476 flow [2022-07-21 09:00:22,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:22,997 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:22,997 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:22,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-21 09:00:22,998 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:00:22,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:22,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1018887062, now seen corresponding path program 20 times [2022-07-21 09:00:22,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:22,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400300117] [2022-07-21 09:00:22,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:22,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:23,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:00:23,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:23,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400300117] [2022-07-21 09:00:23,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400300117] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:23,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:23,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:00:23,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247368732] [2022-07-21 09:00:23,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:23,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:00:23,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:23,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:00:23,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:00:23,091 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-21 09:00:23,091 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 99 transitions, 476 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:23,091 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:23,092 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-21 09:00:23,092 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:23,250 INFO L129 PetriNetUnfolder]: 11/124 cut-off events. [2022-07-21 09:00:23,250 INFO L130 PetriNetUnfolder]: For 244/245 co-relation queries the response was YES. [2022-07-21 09:00:23,251 INFO L84 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 124 events. 11/124 cut-off events. For 244/245 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 204 event pairs, 0 based on Foata normal form. 1/125 useless extension candidates. Maximal degree in co-relation 387. Up to 12 conditions per place. [2022-07-21 09:00:23,252 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 0 selfloop transitions, 0 changer transitions 94/94 dead transitions. [2022-07-21 09:00:23,252 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 94 transitions, 588 flow [2022-07-21 09:00:23,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:00:23,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 09:00:23,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1178 transitions. [2022-07-21 09:00:23,253 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6416122004357299 [2022-07-21 09:00:23,253 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1178 transitions. [2022-07-21 09:00:23,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1178 transitions. [2022-07-21 09:00:23,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:23,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1178 transitions. [2022-07-21 09:00:23,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 65.44444444444444) internal successors, (1178), 18 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:23,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:23,257 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:23,257 INFO L186 Difference]: Start difference. First operand has 170 places, 99 transitions, 476 flow. Second operand 18 states and 1178 transitions. [2022-07-21 09:00:23,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 94 transitions, 588 flow [2022-07-21 09:00:23,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 94 transitions, 478 flow, removed 24 selfloop flow, removed 23 redundant places. [2022-07-21 09:00:23,260 INFO L242 Difference]: Finished difference. Result has 139 places, 0 transitions, 0 flow [2022-07-21 09:00:23,261 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=0, PETRI_PLACES=139, PETRI_TRANSITIONS=0} [2022-07-21 09:00:23,261 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 48 predicate places. [2022-07-21 09:00:23,261 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 0 transitions, 0 flow [2022-07-21 09:00:23,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:23,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-07-21 09:00:23,268 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-07-21 09:00:23,268 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-07-21 09:00:23,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-21 09:00:23,269 INFO L356 BasicCegarLoop]: Path program histogram: [20, 20, 2, 2, 2, 1] [2022-07-21 09:00:23,272 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-21 09:00:23,272 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 09:00:23,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 09:00:23 BasicIcfg [2022-07-21 09:00:23,276 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 09:00:23,276 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 09:00:23,277 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 09:00:23,277 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 09:00:23,277 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:00:04" (3/4) ... [2022-07-21 09:00:23,279 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 09:00:23,284 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-07-21 09:00:23,284 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-07-21 09:00:23,289 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-07-21 09:00:23,289 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-21 09:00:23,289 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 09:00:23,289 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 09:00:23,321 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 09:00:23,321 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 09:00:23,322 INFO L158 Benchmark]: Toolchain (without parser) took 19735.86ms. Allocated memory was 52.4MB in the beginning and 255.9MB in the end (delta: 203.4MB). Free memory was 29.0MB in the beginning and 175.3MB in the end (delta: -146.3MB). Peak memory consumption was 56.9MB. Max. memory is 16.1GB. [2022-07-21 09:00:23,323 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 52.4MB. Free memory was 33.9MB in the beginning and 33.8MB in the end (delta: 45.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 09:00:23,323 INFO L158 Benchmark]: CACSL2BoogieTranslator took 261.64ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 28.8MB in the beginning and 45.5MB in the end (delta: -16.7MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2022-07-21 09:00:23,323 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.94ms. Allocated memory is still 62.9MB. Free memory was 45.5MB in the beginning and 44.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 09:00:23,323 INFO L158 Benchmark]: Boogie Preprocessor took 39.18ms. Allocated memory is still 62.9MB. Free memory was 43.9MB in the beginning and 42.9MB in the end (delta: 980.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 09:00:23,323 INFO L158 Benchmark]: RCFGBuilder took 311.36ms. Allocated memory is still 62.9MB. Free memory was 42.7MB in the beginning and 44.1MB in the end (delta: -1.4MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2022-07-21 09:00:23,324 INFO L158 Benchmark]: TraceAbstraction took 19024.08ms. Allocated memory was 62.9MB in the beginning and 255.9MB in the end (delta: 192.9MB). Free memory was 43.6MB in the beginning and 178.5MB in the end (delta: -134.8MB). Peak memory consumption was 57.9MB. Max. memory is 16.1GB. [2022-07-21 09:00:23,324 INFO L158 Benchmark]: Witness Printer took 44.73ms. Allocated memory is still 255.9MB. Free memory was 178.5MB in the beginning and 175.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-21 09:00:23,327 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 52.4MB. Free memory was 33.9MB in the beginning and 33.8MB in the end (delta: 45.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 261.64ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 28.8MB in the beginning and 45.5MB in the end (delta: -16.7MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.94ms. Allocated memory is still 62.9MB. Free memory was 45.5MB in the beginning and 44.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.18ms. Allocated memory is still 62.9MB. Free memory was 43.9MB in the beginning and 42.9MB in the end (delta: 980.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 311.36ms. Allocated memory is still 62.9MB. Free memory was 42.7MB in the beginning and 44.1MB in the end (delta: -1.4MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * TraceAbstraction took 19024.08ms. Allocated memory was 62.9MB in the beginning and 255.9MB in the end (delta: 192.9MB). Free memory was 43.6MB in the beginning and 178.5MB in the end (delta: -134.8MB). Peak memory consumption was 57.9MB. Max. memory is 16.1GB. * Witness Printer took 44.73ms. Allocated memory is still 255.9MB. Free memory was 178.5MB in the beginning and 175.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 69]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 122 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.9s, OverallIterations: 47, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 13.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1876 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1876 mSDsluCounter, 8928 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8809 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7458 IncrementalHoareTripleChecker+Invalid, 7489 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 1724 mSDtfsCounter, 7458 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1007 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 863 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3533 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1097occurred in iteration=12, InterpolantAutomatonStates: 803, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 3611 NumberOfCodeBlocks, 3611 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 3564 ConstructedInterpolants, 0 QuantifiedInterpolants, 14871 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 47 InterpolantComputations, 47 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-21 09:00:23,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE