./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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-nzb-file-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 b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:41:56,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:41:56,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:41:56,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:41:56,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:41:56,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:41:56,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:41:56,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:41:56,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:41:56,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:41:56,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:41:56,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:41:56,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:41:56,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:41:56,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:41:56,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:41:56,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:41:56,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:41:56,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:41:56,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:41:56,226 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:41:56,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:41:56,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:41:56,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:41:56,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:41:56,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:41:56,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:41:56,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:41:56,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:41:56,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:41:56,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:41:56,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:41:56,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:41:56,233 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:41:56,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:41:56,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:41:56,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:41:56,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:41:56,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:41:56,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:41:56,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:41:56,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:41:56,238 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:41:56,261 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:41:56,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:41:56,262 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:41:56,262 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:41:56,262 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:41:56,263 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:41:56,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:41:56,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:41:56,263 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:41:56,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:41:56,264 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:41:56,264 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:41:56,264 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:41:56,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:41:56,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:41:56,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:41:56,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:41:56,265 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:41:56,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:41:56,265 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:41:56,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:41:56,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:41:56,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:41:56,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:41:56,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:41:56,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:41:56,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:41:56,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:41:56,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:41:56,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:41:56,267 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:41:56,268 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:41:56,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:41:56,268 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d [2022-07-22 21:41:56,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:41:56,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:41:56,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:41:56,453 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:41:56,453 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:41:56,454 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2022-07-22 21:41:56,494 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31591dc2d/7a57a9a01d564849aa95c8b709d750c3/FLAGc77ff8f5a [2022-07-22 21:41:56,856 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:41:56,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2022-07-22 21:41:56,862 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31591dc2d/7a57a9a01d564849aa95c8b709d750c3/FLAGc77ff8f5a [2022-07-22 21:41:56,872 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31591dc2d/7a57a9a01d564849aa95c8b709d750c3 [2022-07-22 21:41:56,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:41:56,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:41:56,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:41:56,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:41:56,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:41:56,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:41:56" (1/1) ... [2022-07-22 21:41:56,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24e9b9a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:56, skipping insertion in model container [2022-07-22 21:41:56,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:41:56" (1/1) ... [2022-07-22 21:41:56,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:41:56,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:41:57,092 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-nzb-file-symm.wvr.c[4929,4942] [2022-07-22 21:41:57,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:41:57,117 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:41:57,147 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-nzb-file-symm.wvr.c[4929,4942] [2022-07-22 21:41:57,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:41:57,170 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:41:57,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:57 WrapperNode [2022-07-22 21:41:57,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:41:57,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:41:57,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:41:57,172 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:41:57,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:57" (1/1) ... [2022-07-22 21:41:57,188 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:57" (1/1) ... [2022-07-22 21:41:57,243 INFO L137 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 21, calls inlined = 29, statements flattened = 452 [2022-07-22 21:41:57,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:41:57,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:41:57,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:41:57,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:41:57,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:57" (1/1) ... [2022-07-22 21:41:57,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:57" (1/1) ... [2022-07-22 21:41:57,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:57" (1/1) ... [2022-07-22 21:41:57,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:57" (1/1) ... [2022-07-22 21:41:57,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:57" (1/1) ... [2022-07-22 21:41:57,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:57" (1/1) ... [2022-07-22 21:41:57,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:57" (1/1) ... [2022-07-22 21:41:57,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:41:57,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:41:57,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:41:57,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:41:57,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:57" (1/1) ... [2022-07-22 21:41:57,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:41:57,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:41:57,342 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) [2022-07-22 21:41:57,361 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 [2022-07-22 21:41:57,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:41:57,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:41:57,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:41:57,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:41:57,399 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-22 21:41:57,399 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-22 21:41:57,399 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-22 21:41:57,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-22 21:41:57,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:41:57,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 21:41:57,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:41:57,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:41:57,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:41:57,402 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:41:57,502 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:41:57,503 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:41:57,951 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:41:57,961 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:41:57,966 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-22 21:41:57,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:41:57 BoogieIcfgContainer [2022-07-22 21:41:57,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:41:57,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:41:57,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:41:57,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:41:57,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:41:56" (1/3) ... [2022-07-22 21:41:57,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c86edb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:41:57, skipping insertion in model container [2022-07-22 21:41:57,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:57" (2/3) ... [2022-07-22 21:41:57,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c86edb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:41:57, skipping insertion in model container [2022-07-22 21:41:57,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:41:57" (3/3) ... [2022-07-22 21:41:57,975 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2022-07-22 21:41:57,978 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:41:57,984 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:41:57,985 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:41:57,985 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:41:58,168 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-22 21:41:58,214 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 538 places, 596 transitions, 1208 flow [2022-07-22 21:41:58,404 INFO L129 PetriNetUnfolder]: 65/594 cut-off events. [2022-07-22 21:41:58,405 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-22 21:41:58,416 INFO L84 FinitePrefix]: Finished finitePrefix Result has 603 conditions, 594 events. 65/594 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1763 event pairs, 0 based on Foata normal form. 0/528 useless extension candidates. Maximal degree in co-relation 413. Up to 2 conditions per place. [2022-07-22 21:41:58,416 INFO L82 GeneralOperation]: Start removeDead. Operand has 538 places, 596 transitions, 1208 flow [2022-07-22 21:41:58,428 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 527 places, 585 transitions, 1182 flow [2022-07-22 21:41:58,439 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:41:58,446 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@11c0d412, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3e93f3d8 [2022-07-22 21:41:58,446 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-22 21:41:58,533 INFO L129 PetriNetUnfolder]: 57/538 cut-off events. [2022-07-22 21:41:58,533 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-22 21:41:58,534 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:58,535 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:58,535 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:41:58,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:58,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1910334662, now seen corresponding path program 1 times [2022-07-22 21:41:58,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:58,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797247406] [2022-07-22 21:41:58,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:58,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:58,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:58,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:58,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:58,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797247406] [2022-07-22 21:41:58,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797247406] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:58,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:58,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:41:58,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720163457] [2022-07-22 21:41:58,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:58,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 21:41:58,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:58,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 21:41:58,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 21:41:58,814 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 566 out of 596 [2022-07-22 21:41:58,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 585 transitions, 1182 flow. Second operand has 2 states, 2 states have (on average 569.0) internal successors, (1138), 2 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:58,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:58,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 566 of 596 [2022-07-22 21:41:58,821 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:58,955 INFO L129 PetriNetUnfolder]: 40/560 cut-off events. [2022-07-22 21:41:58,955 INFO L130 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2022-07-22 21:41:58,961 INFO L84 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 560 events. 40/560 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1685 event pairs, 0 based on Foata normal form. 30/529 useless extension candidates. Maximal degree in co-relation 396. Up to 5 conditions per place. [2022-07-22 21:41:58,964 INFO L132 encePairwiseOnDemand]: 571/596 looper letters, 4 selfloop transitions, 0 changer transitions 5/560 dead transitions. [2022-07-22 21:41:58,964 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 560 transitions, 1140 flow [2022-07-22 21:41:58,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 21:41:58,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-22 21:41:58,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1161 transitions. [2022-07-22 21:41:58,979 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9739932885906041 [2022-07-22 21:41:58,980 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1161 transitions. [2022-07-22 21:41:58,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1161 transitions. [2022-07-22 21:41:58,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:58,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1161 transitions. [2022-07-22 21:41:58,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 580.5) internal successors, (1161), 2 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:58,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 596.0) internal successors, (1788), 3 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:58,999 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 596.0) internal successors, (1788), 3 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:59,001 INFO L186 Difference]: Start difference. First operand has 527 places, 585 transitions, 1182 flow. Second operand 2 states and 1161 transitions. [2022-07-22 21:41:59,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 560 transitions, 1140 flow [2022-07-22 21:41:59,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 560 transitions, 1132 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-22 21:41:59,019 INFO L242 Difference]: Finished difference. Result has 524 places, 555 transitions, 1114 flow [2022-07-22 21:41:59,021 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=1114, PETRI_PLACES=524, PETRI_TRANSITIONS=555} [2022-07-22 21:41:59,024 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, -3 predicate places. [2022-07-22 21:41:59,024 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 555 transitions, 1114 flow [2022-07-22 21:41:59,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 569.0) internal successors, (1138), 2 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:59,026 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:59,026 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:59,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:41:59,026 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:41:59,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:59,027 INFO L85 PathProgramCache]: Analyzing trace with hash 473457702, now seen corresponding path program 1 times [2022-07-22 21:41:59,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:59,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369648275] [2022-07-22 21:41:59,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:59,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:59,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:59,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:59,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369648275] [2022-07-22 21:41:59,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369648275] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:59,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:59,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:41:59,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077141941] [2022-07-22 21:41:59,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:59,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:41:59,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:59,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:41:59,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:41:59,195 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 552 out of 596 [2022-07-22 21:41:59,196 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 555 transitions, 1114 flow. Second operand has 3 states, 3 states have (on average 555.3333333333334) internal successors, (1666), 3 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:59,196 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:59,196 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 552 of 596 [2022-07-22 21:41:59,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:59,600 INFO L129 PetriNetUnfolder]: 177/1911 cut-off events. [2022-07-22 21:41:59,600 INFO L130 PetriNetUnfolder]: For 19/21 co-relation queries the response was YES. [2022-07-22 21:41:59,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2050 conditions, 1911 events. 177/1911 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 14011 event pairs, 36 based on Foata normal form. 1/1696 useless extension candidates. Maximal degree in co-relation 2047. Up to 87 conditions per place. [2022-07-22 21:41:59,617 INFO L132 encePairwiseOnDemand]: 590/596 looper letters, 27 selfloop transitions, 4 changer transitions 0/568 dead transitions. [2022-07-22 21:41:59,617 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 568 transitions, 1205 flow [2022-07-22 21:41:59,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:41:59,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:41:59,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1689 transitions. [2022-07-22 21:41:59,620 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9446308724832215 [2022-07-22 21:41:59,620 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1689 transitions. [2022-07-22 21:41:59,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1689 transitions. [2022-07-22 21:41:59,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:59,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1689 transitions. [2022-07-22 21:41:59,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 563.0) internal successors, (1689), 3 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:59,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:59,654 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:59,655 INFO L186 Difference]: Start difference. First operand has 524 places, 555 transitions, 1114 flow. Second operand 3 states and 1689 transitions. [2022-07-22 21:41:59,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 568 transitions, 1205 flow [2022-07-22 21:41:59,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 568 transitions, 1205 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:41:59,662 INFO L242 Difference]: Finished difference. Result has 523 places, 557 transitions, 1142 flow [2022-07-22 21:41:59,662 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1142, PETRI_PLACES=523, PETRI_TRANSITIONS=557} [2022-07-22 21:41:59,663 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, -4 predicate places. [2022-07-22 21:41:59,663 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 557 transitions, 1142 flow [2022-07-22 21:41:59,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 555.3333333333334) internal successors, (1666), 3 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:59,664 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:59,665 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:59,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:41:59,665 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:41:59,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:59,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1952500914, now seen corresponding path program 2 times [2022-07-22 21:41:59,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:59,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253492587] [2022-07-22 21:41:59,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:59,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:59,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:59,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:59,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253492587] [2022-07-22 21:41:59,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253492587] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:59,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:59,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:41:59,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575607870] [2022-07-22 21:41:59,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:59,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:41:59,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:59,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:41:59,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:41:59,745 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 552 out of 596 [2022-07-22 21:41:59,747 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 557 transitions, 1142 flow. Second operand has 3 states, 3 states have (on average 555.3333333333334) internal successors, (1666), 3 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:59,747 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:59,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 552 of 596 [2022-07-22 21:41:59,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:59,968 INFO L129 PetriNetUnfolder]: 168/1861 cut-off events. [2022-07-22 21:41:59,968 INFO L130 PetriNetUnfolder]: For 77/82 co-relation queries the response was YES. [2022-07-22 21:41:59,978 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2058 conditions, 1861 events. 168/1861 cut-off events. For 77/82 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 13792 event pairs, 39 based on Foata normal form. 4/1689 useless extension candidates. Maximal degree in co-relation 2053. Up to 100 conditions per place. [2022-07-22 21:41:59,983 INFO L132 encePairwiseOnDemand]: 590/596 looper letters, 29 selfloop transitions, 4 changer transitions 0/570 dead transitions. [2022-07-22 21:41:59,983 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 570 transitions, 1241 flow [2022-07-22 21:41:59,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:41:59,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:41:59,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1689 transitions. [2022-07-22 21:41:59,986 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9446308724832215 [2022-07-22 21:41:59,987 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1689 transitions. [2022-07-22 21:41:59,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1689 transitions. [2022-07-22 21:41:59,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:59,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1689 transitions. [2022-07-22 21:41:59,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 563.0) internal successors, (1689), 3 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:59,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:59,994 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:59,994 INFO L186 Difference]: Start difference. First operand has 523 places, 557 transitions, 1142 flow. Second operand 3 states and 1689 transitions. [2022-07-22 21:41:59,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 570 transitions, 1241 flow [2022-07-22 21:41:59,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 570 transitions, 1233 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:00,002 INFO L242 Difference]: Finished difference. Result has 525 places, 559 transitions, 1166 flow [2022-07-22 21:42:00,003 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1166, PETRI_PLACES=525, PETRI_TRANSITIONS=559} [2022-07-22 21:42:00,004 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, -2 predicate places. [2022-07-22 21:42:00,004 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 559 transitions, 1166 flow [2022-07-22 21:42:00,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 555.3333333333334) internal successors, (1666), 3 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:00,005 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:00,005 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:00,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:42:00,006 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:00,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:00,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1641735220, now seen corresponding path program 1 times [2022-07-22 21:42:00,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:00,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095591704] [2022-07-22 21:42:00,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:00,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:00,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:00,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:00,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095591704] [2022-07-22 21:42:00,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095591704] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:00,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:00,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:42:00,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025689726] [2022-07-22 21:42:00,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:00,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:42:00,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:00,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:42:00,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:42:00,079 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 544 out of 596 [2022-07-22 21:42:00,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 559 transitions, 1166 flow. Second operand has 5 states, 5 states have (on average 547.6) internal successors, (2738), 5 states have internal predecessors, (2738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:00,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:00,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 544 of 596 [2022-07-22 21:42:00,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:00,218 INFO L129 PetriNetUnfolder]: 50/678 cut-off events. [2022-07-22 21:42:00,219 INFO L130 PetriNetUnfolder]: For 23/39 co-relation queries the response was YES. [2022-07-22 21:42:00,227 INFO L84 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 678 events. 50/678 cut-off events. For 23/39 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2583 event pairs, 0 based on Foata normal form. 0/615 useless extension candidates. Maximal degree in co-relation 744. Up to 31 conditions per place. [2022-07-22 21:42:00,231 INFO L132 encePairwiseOnDemand]: 586/596 looper letters, 26 selfloop transitions, 8 changer transitions 0/567 dead transitions. [2022-07-22 21:42:00,231 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 567 transitions, 1250 flow [2022-07-22 21:42:00,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:42:00,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:42:00,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2756 transitions. [2022-07-22 21:42:00,235 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9248322147651007 [2022-07-22 21:42:00,236 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2756 transitions. [2022-07-22 21:42:00,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2756 transitions. [2022-07-22 21:42:00,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:00,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2756 transitions. [2022-07-22 21:42:00,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 551.2) internal successors, (2756), 5 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:00,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 596.0) internal successors, (3576), 6 states have internal predecessors, (3576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:00,247 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 596.0) internal successors, (3576), 6 states have internal predecessors, (3576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:00,247 INFO L186 Difference]: Start difference. First operand has 525 places, 559 transitions, 1166 flow. Second operand 5 states and 2756 transitions. [2022-07-22 21:42:00,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 567 transitions, 1250 flow [2022-07-22 21:42:00,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 567 transitions, 1242 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:00,256 INFO L242 Difference]: Finished difference. Result has 528 places, 561 transitions, 1190 flow [2022-07-22 21:42:00,256 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1190, PETRI_PLACES=528, PETRI_TRANSITIONS=561} [2022-07-22 21:42:00,257 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 1 predicate places. [2022-07-22 21:42:00,257 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 561 transitions, 1190 flow [2022-07-22 21:42:00,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 547.6) internal successors, (2738), 5 states have internal predecessors, (2738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:00,259 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:00,259 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:00,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:42:00,260 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:00,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:00,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1612412822, now seen corresponding path program 1 times [2022-07-22 21:42:00,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:00,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845827461] [2022-07-22 21:42:00,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:00,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:00,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:42:00,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:00,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845827461] [2022-07-22 21:42:00,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845827461] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:42:00,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740765651] [2022-07-22 21:42:00,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:00,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:42:00,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:42:00,349 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:42:00,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 21:42:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:00,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 21:42:00,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:42:00,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:42:00,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:42:00,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:42:00,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740765651] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:42:00,618 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:42:00,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-07-22 21:42:00,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687973175] [2022-07-22 21:42:00,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:42:00,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 21:42:00,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:00,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 21:42:00,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-07-22 21:42:00,625 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 542 out of 596 [2022-07-22 21:42:00,632 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 561 transitions, 1190 flow. Second operand has 15 states, 15 states have (on average 545.1333333333333) internal successors, (8177), 15 states have internal predecessors, (8177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:00,632 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:00,632 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 542 of 596 [2022-07-22 21:42:00,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:00,874 INFO L129 PetriNetUnfolder]: 50/694 cut-off events. [2022-07-22 21:42:00,874 INFO L130 PetriNetUnfolder]: For 23/39 co-relation queries the response was YES. [2022-07-22 21:42:00,881 INFO L84 FinitePrefix]: Finished finitePrefix Result has 795 conditions, 694 events. 50/694 cut-off events. For 23/39 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2546 event pairs, 0 based on Foata normal form. 4/637 useless extension candidates. Maximal degree in co-relation 788. Up to 25 conditions per place. [2022-07-22 21:42:00,885 INFO L132 encePairwiseOnDemand]: 580/596 looper letters, 28 selfloop transitions, 22 changer transitions 0/581 dead transitions. [2022-07-22 21:42:00,885 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 581 transitions, 1334 flow [2022-07-22 21:42:00,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 21:42:00,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-22 21:42:00,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 6016 transitions. [2022-07-22 21:42:00,893 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9176327028676022 [2022-07-22 21:42:00,893 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 6016 transitions. [2022-07-22 21:42:00,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 6016 transitions. [2022-07-22 21:42:00,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:00,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 6016 transitions. [2022-07-22 21:42:00,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 546.9090909090909) internal successors, (6016), 11 states have internal predecessors, (6016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:00,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 596.0) internal successors, (7152), 12 states have internal predecessors, (7152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:00,924 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 596.0) internal successors, (7152), 12 states have internal predecessors, (7152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:00,924 INFO L186 Difference]: Start difference. First operand has 528 places, 561 transitions, 1190 flow. Second operand 11 states and 6016 transitions. [2022-07-22 21:42:00,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 581 transitions, 1334 flow [2022-07-22 21:42:00,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 581 transitions, 1322 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-22 21:42:00,935 INFO L242 Difference]: Finished difference. Result has 538 places, 573 transitions, 1289 flow [2022-07-22 21:42:00,936 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1178, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1289, PETRI_PLACES=538, PETRI_TRANSITIONS=573} [2022-07-22 21:42:00,938 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 11 predicate places. [2022-07-22 21:42:00,938 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 573 transitions, 1289 flow [2022-07-22 21:42:00,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 545.1333333333333) internal successors, (8177), 15 states have internal predecessors, (8177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:00,940 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:00,940 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:00,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 21:42:01,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:42:01,173 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:01,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:01,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1847083086, now seen corresponding path program 2 times [2022-07-22 21:42:01,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:01,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491177457] [2022-07-22 21:42:01,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:01,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:01,264 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 21:42:01,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:01,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491177457] [2022-07-22 21:42:01,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491177457] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:42:01,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248889373] [2022-07-22 21:42:01,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 21:42:01,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:42:01,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:42:01,266 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:42:01,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 21:42:01,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-22 21:42:01,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:42:01,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 21:42:01,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:42:01,411 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-22 21:42:01,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 21:42:01,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248889373] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:01,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 21:42:01,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-07-22 21:42:01,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148775561] [2022-07-22 21:42:01,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:01,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:42:01,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:01,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:42:01,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-07-22 21:42:01,416 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 545 out of 596 [2022-07-22 21:42:01,418 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 573 transitions, 1289 flow. Second operand has 5 states, 5 states have (on average 547.4) internal successors, (2737), 5 states have internal predecessors, (2737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:01,418 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:01,418 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 545 of 596 [2022-07-22 21:42:01,418 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:01,704 INFO L129 PetriNetUnfolder]: 171/2080 cut-off events. [2022-07-22 21:42:01,705 INFO L130 PetriNetUnfolder]: For 35/65 co-relation queries the response was YES. [2022-07-22 21:42:01,718 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2301 conditions, 2080 events. 171/2080 cut-off events. For 35/65 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 13291 event pairs, 15 based on Foata normal form. 10/1873 useless extension candidates. Maximal degree in co-relation 2291. Up to 76 conditions per place. [2022-07-22 21:42:01,724 INFO L132 encePairwiseOnDemand]: 589/596 looper letters, 33 selfloop transitions, 5 changer transitions 0/586 dead transitions. [2022-07-22 21:42:01,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 586 transitions, 1398 flow [2022-07-22 21:42:01,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:42:01,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:42:01,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3855 transitions. [2022-07-22 21:42:01,730 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9240172579098753 [2022-07-22 21:42:01,730 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3855 transitions. [2022-07-22 21:42:01,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3855 transitions. [2022-07-22 21:42:01,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:01,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3855 transitions. [2022-07-22 21:42:01,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 550.7142857142857) internal successors, (3855), 7 states have internal predecessors, (3855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:01,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:01,742 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:01,742 INFO L186 Difference]: Start difference. First operand has 538 places, 573 transitions, 1289 flow. Second operand 7 states and 3855 transitions. [2022-07-22 21:42:01,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 586 transitions, 1398 flow [2022-07-22 21:42:01,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 586 transitions, 1381 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-07-22 21:42:01,753 INFO L242 Difference]: Finished difference. Result has 546 places, 577 transitions, 1311 flow [2022-07-22 21:42:01,754 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1311, PETRI_PLACES=546, PETRI_TRANSITIONS=577} [2022-07-22 21:42:01,754 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 19 predicate places. [2022-07-22 21:42:01,754 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 577 transitions, 1311 flow [2022-07-22 21:42:01,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 547.4) internal successors, (2737), 5 states have internal predecessors, (2737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:01,755 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:01,755 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:01,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 21:42:01,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-22 21:42:01,970 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:01,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:01,971 INFO L85 PathProgramCache]: Analyzing trace with hash -2106174958, now seen corresponding path program 1 times [2022-07-22 21:42:01,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:01,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620343449] [2022-07-22 21:42:01,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:01,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:02,056 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 21:42:02,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:02,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620343449] [2022-07-22 21:42:02,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620343449] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:42:02,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516594938] [2022-07-22 21:42:02,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:02,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:42:02,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:42:02,058 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:42:02,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 21:42:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:02,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 21:42:02,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:42:02,299 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 21:42:02,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:42:02,373 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 21:42:02,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516594938] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:42:02,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:42:02,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-07-22 21:42:02,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676469809] [2022-07-22 21:42:02,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:42:02,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 21:42:02,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:02,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 21:42:02,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-07-22 21:42:02,383 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 542 out of 596 [2022-07-22 21:42:02,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 577 transitions, 1311 flow. Second operand has 22 states, 22 states have (on average 545.0454545454545) internal successors, (11991), 22 states have internal predecessors, (11991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:02,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:02,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 542 of 596 [2022-07-22 21:42:02,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:02,737 INFO L129 PetriNetUnfolder]: 51/742 cut-off events. [2022-07-22 21:42:02,737 INFO L130 PetriNetUnfolder]: For 51/67 co-relation queries the response was YES. [2022-07-22 21:42:02,745 INFO L84 FinitePrefix]: Finished finitePrefix Result has 948 conditions, 742 events. 51/742 cut-off events. For 51/67 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2747 event pairs, 0 based on Foata normal form. 4/689 useless extension candidates. Maximal degree in co-relation 933. Up to 25 conditions per place. [2022-07-22 21:42:02,748 INFO L132 encePairwiseOnDemand]: 580/596 looper letters, 36 selfloop transitions, 34 changer transitions 0/605 dead transitions. [2022-07-22 21:42:02,748 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 605 transitions, 1563 flow [2022-07-22 21:42:02,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 21:42:02,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-22 21:42:02,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 9288 transitions. [2022-07-22 21:42:02,761 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9166995657323332 [2022-07-22 21:42:02,761 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 9288 transitions. [2022-07-22 21:42:02,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 9288 transitions. [2022-07-22 21:42:02,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:02,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 9288 transitions. [2022-07-22 21:42:02,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 546.3529411764706) internal successors, (9288), 17 states have internal predecessors, (9288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:02,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 596.0) internal successors, (10728), 18 states have internal predecessors, (10728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:02,836 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 596.0) internal successors, (10728), 18 states have internal predecessors, (10728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:02,836 INFO L186 Difference]: Start difference. First operand has 546 places, 577 transitions, 1311 flow. Second operand 17 states and 9288 transitions. [2022-07-22 21:42:02,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 605 transitions, 1563 flow [2022-07-22 21:42:02,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 605 transitions, 1562 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:42:02,845 INFO L242 Difference]: Finished difference. Result has 564 places, 591 transitions, 1485 flow [2022-07-22 21:42:02,846 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1485, PETRI_PLACES=564, PETRI_TRANSITIONS=591} [2022-07-22 21:42:02,846 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 37 predicate places. [2022-07-22 21:42:02,847 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 591 transitions, 1485 flow [2022-07-22 21:42:02,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 545.0454545454545) internal successors, (11991), 22 states have internal predecessors, (11991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:02,849 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:02,850 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:02,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 21:42:03,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:42:03,068 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:03,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:03,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1039231050, now seen corresponding path program 2 times [2022-07-22 21:42:03,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:03,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146722337] [2022-07-22 21:42:03,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:03,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:03,152 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-22 21:42:03,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:03,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146722337] [2022-07-22 21:42:03,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146722337] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:03,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:03,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:42:03,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525674224] [2022-07-22 21:42:03,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:03,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:42:03,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:03,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:42:03,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:42:03,157 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 545 out of 596 [2022-07-22 21:42:03,159 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 591 transitions, 1485 flow. Second operand has 5 states, 5 states have (on average 547.4) internal successors, (2737), 5 states have internal predecessors, (2737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:03,159 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:03,159 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 545 of 596 [2022-07-22 21:42:03,160 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:03,373 INFO L129 PetriNetUnfolder]: 157/1286 cut-off events. [2022-07-22 21:42:03,374 INFO L130 PetriNetUnfolder]: For 118/128 co-relation queries the response was YES. [2022-07-22 21:42:03,383 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1648 conditions, 1286 events. 157/1286 cut-off events. For 118/128 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6766 event pairs, 43 based on Foata normal form. 0/1143 useless extension candidates. Maximal degree in co-relation 1630. Up to 146 conditions per place. [2022-07-22 21:42:03,387 INFO L132 encePairwiseOnDemand]: 589/596 looper letters, 32 selfloop transitions, 5 changer transitions 0/603 dead transitions. [2022-07-22 21:42:03,387 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 603 transitions, 1589 flow [2022-07-22 21:42:03,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:42:03,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:42:03,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3854 transitions. [2022-07-22 21:42:03,392 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.923777564717162 [2022-07-22 21:42:03,392 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3854 transitions. [2022-07-22 21:42:03,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3854 transitions. [2022-07-22 21:42:03,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:03,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3854 transitions. [2022-07-22 21:42:03,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 550.5714285714286) internal successors, (3854), 7 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:03,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:03,403 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:03,404 INFO L186 Difference]: Start difference. First operand has 564 places, 591 transitions, 1485 flow. Second operand 7 states and 3854 transitions. [2022-07-22 21:42:03,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 603 transitions, 1589 flow [2022-07-22 21:42:03,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 603 transitions, 1544 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-07-22 21:42:03,413 INFO L242 Difference]: Finished difference. Result has 567 places, 595 transitions, 1479 flow [2022-07-22 21:42:03,414 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1440, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=586, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1479, PETRI_PLACES=567, PETRI_TRANSITIONS=595} [2022-07-22 21:42:03,414 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 40 predicate places. [2022-07-22 21:42:03,414 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 595 transitions, 1479 flow [2022-07-22 21:42:03,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 547.4) internal successors, (2737), 5 states have internal predecessors, (2737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:03,415 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:03,415 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:03,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:42:03,416 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:03,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:03,416 INFO L85 PathProgramCache]: Analyzing trace with hash 514282158, now seen corresponding path program 1 times [2022-07-22 21:42:03,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:03,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324910495] [2022-07-22 21:42:03,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:03,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:03,550 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-22 21:42:03,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:03,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324910495] [2022-07-22 21:42:03,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324910495] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:03,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:03,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:42:03,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095865618] [2022-07-22 21:42:03,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:03,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:42:03,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:03,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:42:03,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:42:03,557 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 531 out of 596 [2022-07-22 21:42:03,560 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 595 transitions, 1479 flow. Second operand has 7 states, 7 states have (on average 535.4285714285714) internal successors, (3748), 7 states have internal predecessors, (3748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:03,560 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:03,560 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 531 of 596 [2022-07-22 21:42:03,560 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:03,751 INFO L129 PetriNetUnfolder]: 54/846 cut-off events. [2022-07-22 21:42:03,751 INFO L130 PetriNetUnfolder]: For 71/87 co-relation queries the response was YES. [2022-07-22 21:42:03,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1197 conditions, 846 events. 54/846 cut-off events. For 71/87 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3619 event pairs, 0 based on Foata normal form. 4/801 useless extension candidates. Maximal degree in co-relation 1174. Up to 83 conditions per place. [2022-07-22 21:42:03,763 INFO L132 encePairwiseOnDemand]: 588/596 looper letters, 38 selfloop transitions, 4 changer transitions 4/607 dead transitions. [2022-07-22 21:42:03,763 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 607 transitions, 1595 flow [2022-07-22 21:42:03,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:42:03,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:42:03,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3764 transitions. [2022-07-22 21:42:03,769 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9022051773729626 [2022-07-22 21:42:03,769 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3764 transitions. [2022-07-22 21:42:03,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3764 transitions. [2022-07-22 21:42:03,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:03,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3764 transitions. [2022-07-22 21:42:03,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 537.7142857142857) internal successors, (3764), 7 states have internal predecessors, (3764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:03,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:03,780 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:03,780 INFO L186 Difference]: Start difference. First operand has 567 places, 595 transitions, 1479 flow. Second operand 7 states and 3764 transitions. [2022-07-22 21:42:03,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 607 transitions, 1595 flow [2022-07-22 21:42:03,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 607 transitions, 1594 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:42:03,789 INFO L242 Difference]: Finished difference. Result has 577 places, 598 transitions, 1512 flow [2022-07-22 21:42:03,790 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1478, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1512, PETRI_PLACES=577, PETRI_TRANSITIONS=598} [2022-07-22 21:42:03,791 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 50 predicate places. [2022-07-22 21:42:03,791 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 598 transitions, 1512 flow [2022-07-22 21:42:03,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 535.4285714285714) internal successors, (3748), 7 states have internal predecessors, (3748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:03,792 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:03,792 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:03,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 21:42:03,792 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:03,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:03,793 INFO L85 PathProgramCache]: Analyzing trace with hash 860118038, now seen corresponding path program 1 times [2022-07-22 21:42:03,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:03,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186592107] [2022-07-22 21:42:03,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:03,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:03,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:03,895 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-22 21:42:03,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:03,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186592107] [2022-07-22 21:42:03,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186592107] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:03,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:03,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:42:03,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728831531] [2022-07-22 21:42:03,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:03,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:42:03,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:03,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:42:03,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:42:03,899 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 531 out of 596 [2022-07-22 21:42:03,901 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 598 transitions, 1512 flow. Second operand has 7 states, 7 states have (on average 535.4285714285714) internal successors, (3748), 7 states have internal predecessors, (3748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:03,901 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:03,901 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 531 of 596 [2022-07-22 21:42:03,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:04,115 INFO L129 PetriNetUnfolder]: 56/894 cut-off events. [2022-07-22 21:42:04,116 INFO L130 PetriNetUnfolder]: For 127/143 co-relation queries the response was YES. [2022-07-22 21:42:04,122 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1387 conditions, 894 events. 56/894 cut-off events. For 127/143 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4018 event pairs, 0 based on Foata normal form. 4/849 useless extension candidates. Maximal degree in co-relation 1359. Up to 125 conditions per place. [2022-07-22 21:42:04,125 INFO L132 encePairwiseOnDemand]: 589/596 looper letters, 42 selfloop transitions, 2 changer transitions 5/611 dead transitions. [2022-07-22 21:42:04,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 611 transitions, 1650 flow [2022-07-22 21:42:04,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:42:04,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:42:04,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3765 transitions. [2022-07-22 21:42:04,130 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9024448705656759 [2022-07-22 21:42:04,130 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3765 transitions. [2022-07-22 21:42:04,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3765 transitions. [2022-07-22 21:42:04,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:04,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3765 transitions. [2022-07-22 21:42:04,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 537.8571428571429) internal successors, (3765), 7 states have internal predecessors, (3765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:04,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:04,139 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:04,139 INFO L186 Difference]: Start difference. First operand has 577 places, 598 transitions, 1512 flow. Second operand 7 states and 3765 transitions. [2022-07-22 21:42:04,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 611 transitions, 1650 flow [2022-07-22 21:42:04,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 611 transitions, 1632 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-07-22 21:42:04,149 INFO L242 Difference]: Finished difference. Result has 581 places, 599 transitions, 1526 flow [2022-07-22 21:42:04,149 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1526, PETRI_PLACES=581, PETRI_TRANSITIONS=599} [2022-07-22 21:42:04,150 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 54 predicate places. [2022-07-22 21:42:04,150 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 599 transitions, 1526 flow [2022-07-22 21:42:04,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 535.4285714285714) internal successors, (3748), 7 states have internal predecessors, (3748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:04,150 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:04,151 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:04,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 21:42:04,151 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:04,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:04,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1515986788, now seen corresponding path program 1 times [2022-07-22 21:42:04,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:04,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250972484] [2022-07-22 21:42:04,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:04,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:04,194 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-22 21:42:04,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:04,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250972484] [2022-07-22 21:42:04,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250972484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:04,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:04,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:42:04,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118024296] [2022-07-22 21:42:04,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:04,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:42:04,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:04,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:42:04,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:42:04,197 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 548 out of 596 [2022-07-22 21:42:04,198 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 599 transitions, 1526 flow. Second operand has 4 states, 4 states have (on average 550.75) internal successors, (2203), 4 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:04,198 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:04,198 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 548 of 596 [2022-07-22 21:42:04,198 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:04,416 INFO L129 PetriNetUnfolder]: 143/1364 cut-off events. [2022-07-22 21:42:04,416 INFO L130 PetriNetUnfolder]: For 155/166 co-relation queries the response was YES. [2022-07-22 21:42:04,467 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1898 conditions, 1364 events. 143/1364 cut-off events. For 155/166 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 7411 event pairs, 36 based on Foata normal form. 5/1238 useless extension candidates. Maximal degree in co-relation 1868. Up to 145 conditions per place. [2022-07-22 21:42:04,470 INFO L132 encePairwiseOnDemand]: 592/596 looper letters, 29 selfloop transitions, 3 changer transitions 2/606 dead transitions. [2022-07-22 21:42:04,470 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 606 transitions, 1614 flow [2022-07-22 21:42:04,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:42:04,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:42:04,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2770 transitions. [2022-07-22 21:42:04,474 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9295302013422819 [2022-07-22 21:42:04,474 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2770 transitions. [2022-07-22 21:42:04,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2770 transitions. [2022-07-22 21:42:04,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:04,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2770 transitions. [2022-07-22 21:42:04,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 554.0) internal successors, (2770), 5 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:04,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 596.0) internal successors, (3576), 6 states have internal predecessors, (3576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:04,480 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 596.0) internal successors, (3576), 6 states have internal predecessors, (3576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:04,480 INFO L186 Difference]: Start difference. First operand has 581 places, 599 transitions, 1526 flow. Second operand 5 states and 2770 transitions. [2022-07-22 21:42:04,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 606 transitions, 1614 flow [2022-07-22 21:42:04,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 606 transitions, 1604 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-07-22 21:42:04,490 INFO L242 Difference]: Finished difference. Result has 579 places, 599 transitions, 1529 flow [2022-07-22 21:42:04,491 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1529, PETRI_PLACES=579, PETRI_TRANSITIONS=599} [2022-07-22 21:42:04,491 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 52 predicate places. [2022-07-22 21:42:04,491 INFO L495 AbstractCegarLoop]: Abstraction has has 579 places, 599 transitions, 1529 flow [2022-07-22 21:42:04,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 550.75) internal successors, (2203), 4 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:04,492 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:04,492 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:04,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 21:42:04,492 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:04,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:04,493 INFO L85 PathProgramCache]: Analyzing trace with hash -886073758, now seen corresponding path program 1 times [2022-07-22 21:42:04,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:04,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68214693] [2022-07-22 21:42:04,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:04,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:04,542 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-22 21:42:04,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:04,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68214693] [2022-07-22 21:42:04,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68214693] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:04,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:04,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:42:04,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641123900] [2022-07-22 21:42:04,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:04,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:42:04,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:04,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:42:04,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:42:04,545 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 548 out of 596 [2022-07-22 21:42:04,546 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 599 transitions, 1529 flow. Second operand has 4 states, 4 states have (on average 550.75) internal successors, (2203), 4 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:04,546 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:04,546 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 548 of 596 [2022-07-22 21:42:04,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:04,897 INFO L129 PetriNetUnfolder]: 158/2157 cut-off events. [2022-07-22 21:42:04,897 INFO L130 PetriNetUnfolder]: For 131/155 co-relation queries the response was YES. [2022-07-22 21:42:04,910 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2692 conditions, 2157 events. 158/2157 cut-off events. For 131/155 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 14022 event pairs, 12 based on Foata normal form. 8/1962 useless extension candidates. Maximal degree in co-relation 2663. Up to 69 conditions per place. [2022-07-22 21:42:04,915 INFO L132 encePairwiseOnDemand]: 592/596 looper letters, 30 selfloop transitions, 3 changer transitions 2/607 dead transitions. [2022-07-22 21:42:04,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 607 transitions, 1622 flow [2022-07-22 21:42:04,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:42:04,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:42:04,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2771 transitions. [2022-07-22 21:42:04,919 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9298657718120805 [2022-07-22 21:42:04,920 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2771 transitions. [2022-07-22 21:42:04,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2771 transitions. [2022-07-22 21:42:04,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:04,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2771 transitions. [2022-07-22 21:42:04,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 554.2) internal successors, (2771), 5 states have internal predecessors, (2771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:04,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 596.0) internal successors, (3576), 6 states have internal predecessors, (3576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:04,926 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 596.0) internal successors, (3576), 6 states have internal predecessors, (3576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:04,926 INFO L186 Difference]: Start difference. First operand has 579 places, 599 transitions, 1529 flow. Second operand 5 states and 2771 transitions. [2022-07-22 21:42:04,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 607 transitions, 1622 flow [2022-07-22 21:42:04,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 607 transitions, 1613 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:04,936 INFO L242 Difference]: Finished difference. Result has 584 places, 599 transitions, 1537 flow [2022-07-22 21:42:04,937 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=577, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1537, PETRI_PLACES=584, PETRI_TRANSITIONS=599} [2022-07-22 21:42:04,938 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 57 predicate places. [2022-07-22 21:42:04,939 INFO L495 AbstractCegarLoop]: Abstraction has has 584 places, 599 transitions, 1537 flow [2022-07-22 21:42:04,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 550.75) internal successors, (2203), 4 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:04,939 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:04,939 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:04,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 21:42:04,939 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:04,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:04,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1826489834, now seen corresponding path program 1 times [2022-07-22 21:42:04,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:04,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331245815] [2022-07-22 21:42:04,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:04,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:04,994 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-22 21:42:04,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:04,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331245815] [2022-07-22 21:42:04,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331245815] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:04,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:04,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:42:04,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851592101] [2022-07-22 21:42:04,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:04,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:42:04,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:04,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:42:04,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:42:04,998 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 549 out of 596 [2022-07-22 21:42:04,999 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 599 transitions, 1537 flow. Second operand has 3 states, 3 states have (on average 552.0) internal successors, (1656), 3 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:04,999 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:04,999 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 549 of 596 [2022-07-22 21:42:04,999 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:05,292 INFO L129 PetriNetUnfolder]: 159/1654 cut-off events. [2022-07-22 21:42:05,292 INFO L130 PetriNetUnfolder]: For 141/159 co-relation queries the response was YES. [2022-07-22 21:42:05,308 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2126 conditions, 1654 events. 159/1654 cut-off events. For 141/159 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 10205 event pairs, 36 based on Foata normal form. 0/1485 useless extension candidates. Maximal degree in co-relation 2094. Up to 111 conditions per place. [2022-07-22 21:42:05,313 INFO L132 encePairwiseOnDemand]: 591/596 looper letters, 24 selfloop transitions, 4 changer transitions 0/606 dead transitions. [2022-07-22 21:42:05,313 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 606 transitions, 1609 flow [2022-07-22 21:42:05,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:42:05,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:42:05,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1676 transitions. [2022-07-22 21:42:05,316 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9373601789709173 [2022-07-22 21:42:05,316 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1676 transitions. [2022-07-22 21:42:05,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1676 transitions. [2022-07-22 21:42:05,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:05,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1676 transitions. [2022-07-22 21:42:05,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 558.6666666666666) internal successors, (1676), 3 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:05,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:05,319 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:05,320 INFO L186 Difference]: Start difference. First operand has 584 places, 599 transitions, 1537 flow. Second operand 3 states and 1676 transitions. [2022-07-22 21:42:05,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 606 transitions, 1609 flow [2022-07-22 21:42:05,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 606 transitions, 1600 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:05,334 INFO L242 Difference]: Finished difference. Result has 585 places, 600 transitions, 1546 flow [2022-07-22 21:42:05,335 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1528, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1546, PETRI_PLACES=585, PETRI_TRANSITIONS=600} [2022-07-22 21:42:05,335 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 58 predicate places. [2022-07-22 21:42:05,336 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 600 transitions, 1546 flow [2022-07-22 21:42:05,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 552.0) internal successors, (1656), 3 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:05,336 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:05,336 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:05,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 21:42:05,336 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:05,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:05,337 INFO L85 PathProgramCache]: Analyzing trace with hash -507542535, now seen corresponding path program 1 times [2022-07-22 21:42:05,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:05,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816472912] [2022-07-22 21:42:05,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:05,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:05,399 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-22 21:42:05,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:05,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816472912] [2022-07-22 21:42:05,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816472912] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:05,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:05,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:42:05,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867155102] [2022-07-22 21:42:05,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:05,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:42:05,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:05,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:42:05,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:42:05,403 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 549 out of 596 [2022-07-22 21:42:05,404 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 600 transitions, 1546 flow. Second operand has 3 states, 3 states have (on average 552.0) internal successors, (1656), 3 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:05,404 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:05,404 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 549 of 596 [2022-07-22 21:42:05,404 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:05,828 INFO L129 PetriNetUnfolder]: 182/2578 cut-off events. [2022-07-22 21:42:05,828 INFO L130 PetriNetUnfolder]: For 125/172 co-relation queries the response was YES. [2022-07-22 21:42:05,855 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3214 conditions, 2578 events. 182/2578 cut-off events. For 125/172 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 17313 event pairs, 14 based on Foata normal form. 2/2360 useless extension candidates. Maximal degree in co-relation 3181. Up to 60 conditions per place. [2022-07-22 21:42:05,863 INFO L132 encePairwiseOnDemand]: 591/596 looper letters, 25 selfloop transitions, 4 changer transitions 0/608 dead transitions. [2022-07-22 21:42:05,863 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 608 transitions, 1623 flow [2022-07-22 21:42:05,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:42:05,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:42:05,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1677 transitions. [2022-07-22 21:42:05,865 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9379194630872483 [2022-07-22 21:42:05,865 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1677 transitions. [2022-07-22 21:42:05,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1677 transitions. [2022-07-22 21:42:05,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:05,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1677 transitions. [2022-07-22 21:42:05,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 559.0) internal successors, (1677), 3 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:05,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:05,869 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:05,869 INFO L186 Difference]: Start difference. First operand has 585 places, 600 transitions, 1546 flow. Second operand 3 states and 1677 transitions. [2022-07-22 21:42:05,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 608 transitions, 1623 flow [2022-07-22 21:42:05,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 608 transitions, 1619 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:42:05,880 INFO L242 Difference]: Finished difference. Result has 587 places, 601 transitions, 1560 flow [2022-07-22 21:42:05,881 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1560, PETRI_PLACES=587, PETRI_TRANSITIONS=601} [2022-07-22 21:42:05,881 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 60 predicate places. [2022-07-22 21:42:05,881 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 601 transitions, 1560 flow [2022-07-22 21:42:05,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 552.0) internal successors, (1656), 3 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:05,881 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:05,882 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:05,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 21:42:05,882 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:05,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:05,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1894501790, now seen corresponding path program 1 times [2022-07-22 21:42:05,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:05,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940548060] [2022-07-22 21:42:05,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:05,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:05,937 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-22 21:42:05,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:05,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940548060] [2022-07-22 21:42:05,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940548060] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:05,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:05,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:42:05,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694291377] [2022-07-22 21:42:05,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:05,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:42:05,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:05,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:42:05,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:42:05,940 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 550 out of 596 [2022-07-22 21:42:05,941 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 601 transitions, 1560 flow. Second operand has 3 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:05,941 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:05,941 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 550 of 596 [2022-07-22 21:42:05,941 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:06,421 INFO L129 PetriNetUnfolder]: 225/3066 cut-off events. [2022-07-22 21:42:06,421 INFO L130 PetriNetUnfolder]: For 240/296 co-relation queries the response was YES. [2022-07-22 21:42:06,443 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4006 conditions, 3066 events. 225/3066 cut-off events. For 240/296 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 22356 event pairs, 31 based on Foata normal form. 4/2849 useless extension candidates. Maximal degree in co-relation 3972. Up to 95 conditions per place. [2022-07-22 21:42:06,450 INFO L132 encePairwiseOnDemand]: 589/596 looper letters, 26 selfloop transitions, 5 changer transitions 0/612 dead transitions. [2022-07-22 21:42:06,451 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 612 transitions, 1650 flow [2022-07-22 21:42:06,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:42:06,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:42:06,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1683 transitions. [2022-07-22 21:42:06,453 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9412751677852349 [2022-07-22 21:42:06,454 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1683 transitions. [2022-07-22 21:42:06,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1683 transitions. [2022-07-22 21:42:06,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:06,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1683 transitions. [2022-07-22 21:42:06,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 561.0) internal successors, (1683), 3 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:06,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:06,457 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:06,457 INFO L186 Difference]: Start difference. First operand has 587 places, 601 transitions, 1560 flow. Second operand 3 states and 1683 transitions. [2022-07-22 21:42:06,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 612 transitions, 1650 flow [2022-07-22 21:42:06,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 612 transitions, 1646 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:42:06,469 INFO L242 Difference]: Finished difference. Result has 590 places, 604 transitions, 1595 flow [2022-07-22 21:42:06,470 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1556, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1595, PETRI_PLACES=590, PETRI_TRANSITIONS=604} [2022-07-22 21:42:06,470 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 63 predicate places. [2022-07-22 21:42:06,470 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 604 transitions, 1595 flow [2022-07-22 21:42:06,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:06,471 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:06,471 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:06,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 21:42:06,471 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:06,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:06,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1896665874, now seen corresponding path program 2 times [2022-07-22 21:42:06,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:06,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198662468] [2022-07-22 21:42:06,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:06,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:06,511 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-22 21:42:06,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:06,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198662468] [2022-07-22 21:42:06,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198662468] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:06,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:06,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:42:06,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810749688] [2022-07-22 21:42:06,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:06,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:42:06,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:06,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:42:06,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:42:06,515 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 550 out of 596 [2022-07-22 21:42:06,515 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 604 transitions, 1595 flow. Second operand has 3 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:06,516 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:06,516 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 550 of 596 [2022-07-22 21:42:06,516 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:06,944 INFO L129 PetriNetUnfolder]: 221/2931 cut-off events. [2022-07-22 21:42:06,945 INFO L130 PetriNetUnfolder]: For 311/371 co-relation queries the response was YES. [2022-07-22 21:42:06,964 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3890 conditions, 2931 events. 221/2931 cut-off events. For 311/371 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 20835 event pairs, 40 based on Foata normal form. 3/2717 useless extension candidates. Maximal degree in co-relation 3855. Up to 128 conditions per place. [2022-07-22 21:42:06,971 INFO L132 encePairwiseOnDemand]: 592/596 looper letters, 26 selfloop transitions, 2 changer transitions 3/612 dead transitions. [2022-07-22 21:42:06,971 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 612 transitions, 1676 flow [2022-07-22 21:42:06,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:42:06,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:42:06,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1680 transitions. [2022-07-22 21:42:06,974 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9395973154362416 [2022-07-22 21:42:06,974 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1680 transitions. [2022-07-22 21:42:06,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1680 transitions. [2022-07-22 21:42:06,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:06,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1680 transitions. [2022-07-22 21:42:06,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 560.0) internal successors, (1680), 3 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:06,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:06,978 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:06,978 INFO L186 Difference]: Start difference. First operand has 590 places, 604 transitions, 1595 flow. Second operand 3 states and 1680 transitions. [2022-07-22 21:42:06,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 612 transitions, 1676 flow [2022-07-22 21:42:06,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 590 places, 612 transitions, 1666 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:06,989 INFO L242 Difference]: Finished difference. Result has 591 places, 604 transitions, 1595 flow [2022-07-22 21:42:06,990 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1585, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1595, PETRI_PLACES=591, PETRI_TRANSITIONS=604} [2022-07-22 21:42:06,990 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 64 predicate places. [2022-07-22 21:42:06,991 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 604 transitions, 1595 flow [2022-07-22 21:42:06,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:06,991 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:06,991 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:06,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 21:42:06,992 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:06,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:06,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1402262166, now seen corresponding path program 1 times [2022-07-22 21:42:06,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:06,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604530312] [2022-07-22 21:42:06,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:06,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:07,035 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-22 21:42:07,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:07,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604530312] [2022-07-22 21:42:07,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604530312] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:07,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:07,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:42:07,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018865969] [2022-07-22 21:42:07,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:07,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:42:07,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:07,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:42:07,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:42:07,038 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 550 out of 596 [2022-07-22 21:42:07,039 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 604 transitions, 1595 flow. Second operand has 3 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:07,039 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:07,039 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 550 of 596 [2022-07-22 21:42:07,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:07,538 INFO L129 PetriNetUnfolder]: 236/3053 cut-off events. [2022-07-22 21:42:07,539 INFO L130 PetriNetUnfolder]: For 365/427 co-relation queries the response was YES. [2022-07-22 21:42:07,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3964 conditions, 3053 events. 236/3053 cut-off events. For 365/427 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 22049 event pairs, 39 based on Foata normal form. 5/2822 useless extension candidates. Maximal degree in co-relation 3928. Up to 116 conditions per place. [2022-07-22 21:42:07,567 INFO L132 encePairwiseOnDemand]: 592/596 looper letters, 26 selfloop transitions, 3 changer transitions 3/613 dead transitions. [2022-07-22 21:42:07,567 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 613 transitions, 1684 flow [2022-07-22 21:42:07,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:42:07,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:42:07,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1681 transitions. [2022-07-22 21:42:07,570 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9401565995525727 [2022-07-22 21:42:07,570 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1681 transitions. [2022-07-22 21:42:07,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1681 transitions. [2022-07-22 21:42:07,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:07,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1681 transitions. [2022-07-22 21:42:07,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 560.3333333333334) internal successors, (1681), 3 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:07,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:07,574 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:07,574 INFO L186 Difference]: Start difference. First operand has 591 places, 604 transitions, 1595 flow. Second operand 3 states and 1681 transitions. [2022-07-22 21:42:07,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 613 transitions, 1684 flow [2022-07-22 21:42:07,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 613 transitions, 1682 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:42:07,586 INFO L242 Difference]: Finished difference. Result has 593 places, 604 transitions, 1606 flow [2022-07-22 21:42:07,587 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1593, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1606, PETRI_PLACES=593, PETRI_TRANSITIONS=604} [2022-07-22 21:42:07,588 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 66 predicate places. [2022-07-22 21:42:07,588 INFO L495 AbstractCegarLoop]: Abstraction has has 593 places, 604 transitions, 1606 flow [2022-07-22 21:42:07,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:07,588 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:07,588 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:07,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 21:42:07,589 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:07,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:07,589 INFO L85 PathProgramCache]: Analyzing trace with hash 780994070, now seen corresponding path program 2 times [2022-07-22 21:42:07,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:07,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782970037] [2022-07-22 21:42:07,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:07,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:07,654 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-22 21:42:07,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:07,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782970037] [2022-07-22 21:42:07,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782970037] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:07,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:07,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:42:07,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732119608] [2022-07-22 21:42:07,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:07,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:42:07,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:07,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:42:07,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:42:07,657 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 550 out of 596 [2022-07-22 21:42:07,658 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 604 transitions, 1606 flow. Second operand has 3 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:07,658 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:07,659 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 550 of 596 [2022-07-22 21:42:07,659 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:08,092 INFO L129 PetriNetUnfolder]: 215/2844 cut-off events. [2022-07-22 21:42:08,092 INFO L130 PetriNetUnfolder]: For 428/494 co-relation queries the response was YES. [2022-07-22 21:42:08,118 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3790 conditions, 2844 events. 215/2844 cut-off events. For 428/494 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 19723 event pairs, 26 based on Foata normal form. 4/2642 useless extension candidates. Maximal degree in co-relation 3753. Up to 74 conditions per place. [2022-07-22 21:42:08,126 INFO L132 encePairwiseOnDemand]: 589/596 looper letters, 27 selfloop transitions, 5 changer transitions 3/616 dead transitions. [2022-07-22 21:42:08,126 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 616 transitions, 1720 flow [2022-07-22 21:42:08,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:42:08,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:42:08,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1683 transitions. [2022-07-22 21:42:08,129 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9412751677852349 [2022-07-22 21:42:08,129 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1683 transitions. [2022-07-22 21:42:08,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1683 transitions. [2022-07-22 21:42:08,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:08,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1683 transitions. [2022-07-22 21:42:08,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 561.0) internal successors, (1683), 3 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:08,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:08,132 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:08,132 INFO L186 Difference]: Start difference. First operand has 593 places, 604 transitions, 1606 flow. Second operand 3 states and 1683 transitions. [2022-07-22 21:42:08,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 616 transitions, 1720 flow [2022-07-22 21:42:08,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 616 transitions, 1717 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:42:08,144 INFO L242 Difference]: Finished difference. Result has 596 places, 605 transitions, 1628 flow [2022-07-22 21:42:08,145 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1603, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1628, PETRI_PLACES=596, PETRI_TRANSITIONS=605} [2022-07-22 21:42:08,145 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 69 predicate places. [2022-07-22 21:42:08,145 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 605 transitions, 1628 flow [2022-07-22 21:42:08,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:08,146 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:08,146 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:08,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 21:42:08,146 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:08,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:08,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1503462978, now seen corresponding path program 1 times [2022-07-22 21:42:08,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:08,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787267728] [2022-07-22 21:42:08,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:08,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:08,216 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-22 21:42:08,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:08,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787267728] [2022-07-22 21:42:08,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787267728] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:08,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:08,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:42:08,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275705153] [2022-07-22 21:42:08,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:08,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:42:08,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:08,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:42:08,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:42:08,219 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 514 out of 596 [2022-07-22 21:42:08,221 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 605 transitions, 1628 flow. Second operand has 5 states, 5 states have (on average 518.8) internal successors, (2594), 5 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:08,221 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:08,221 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 514 of 596 [2022-07-22 21:42:08,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:09,221 INFO L129 PetriNetUnfolder]: 937/5424 cut-off events. [2022-07-22 21:42:09,222 INFO L130 PetriNetUnfolder]: For 2143/2145 co-relation queries the response was YES. [2022-07-22 21:42:09,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8108 conditions, 5424 events. 937/5424 cut-off events. For 2143/2145 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 49424 event pairs, 134 based on Foata normal form. 42/4876 useless extension candidates. Maximal degree in co-relation 8070. Up to 965 conditions per place. [2022-07-22 21:42:09,254 INFO L132 encePairwiseOnDemand]: 585/596 looper letters, 75 selfloop transitions, 12 changer transitions 15/647 dead transitions. [2022-07-22 21:42:09,254 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 647 transitions, 2021 flow [2022-07-22 21:42:09,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 21:42:09,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-22 21:42:09,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3180 transitions. [2022-07-22 21:42:09,260 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.889261744966443 [2022-07-22 21:42:09,260 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3180 transitions. [2022-07-22 21:42:09,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3180 transitions. [2022-07-22 21:42:09,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:09,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3180 transitions. [2022-07-22 21:42:09,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 530.0) internal successors, (3180), 6 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:09,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 596.0) internal successors, (4172), 7 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:09,266 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 596.0) internal successors, (4172), 7 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:09,266 INFO L186 Difference]: Start difference. First operand has 596 places, 605 transitions, 1628 flow. Second operand 6 states and 3180 transitions. [2022-07-22 21:42:09,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 647 transitions, 2021 flow [2022-07-22 21:42:09,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 647 transitions, 1983 flow, removed 10 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:09,279 INFO L242 Difference]: Finished difference. Result has 603 places, 611 transitions, 1692 flow [2022-07-22 21:42:09,280 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1610, PETRI_DIFFERENCE_MINUEND_PLACES=594, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1692, PETRI_PLACES=603, PETRI_TRANSITIONS=611} [2022-07-22 21:42:09,281 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 76 predicate places. [2022-07-22 21:42:09,281 INFO L495 AbstractCegarLoop]: Abstraction has has 603 places, 611 transitions, 1692 flow [2022-07-22 21:42:09,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 518.8) internal successors, (2594), 5 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:09,281 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:09,282 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:09,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 21:42:09,282 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:09,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:09,283 INFO L85 PathProgramCache]: Analyzing trace with hash 770364222, now seen corresponding path program 2 times [2022-07-22 21:42:09,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:09,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486701815] [2022-07-22 21:42:09,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:09,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:09,380 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-22 21:42:09,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:09,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486701815] [2022-07-22 21:42:09,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486701815] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:09,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:09,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:42:09,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386740791] [2022-07-22 21:42:09,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:09,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:42:09,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:09,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:42:09,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:42:09,384 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 596 [2022-07-22 21:42:09,385 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 611 transitions, 1692 flow. Second operand has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:09,385 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:09,385 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 596 [2022-07-22 21:42:09,385 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:10,415 INFO L129 PetriNetUnfolder]: 921/5757 cut-off events. [2022-07-22 21:42:10,415 INFO L130 PetriNetUnfolder]: For 1704/1707 co-relation queries the response was YES. [2022-07-22 21:42:10,447 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8870 conditions, 5757 events. 921/5757 cut-off events. For 1704/1707 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 53459 event pairs, 362 based on Foata normal form. 5/5211 useless extension candidates. Maximal degree in co-relation 8829. Up to 772 conditions per place. [2022-07-22 21:42:10,458 INFO L132 encePairwiseOnDemand]: 581/596 looper letters, 75 selfloop transitions, 14 changer transitions 33/665 dead transitions. [2022-07-22 21:42:10,458 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 665 transitions, 2113 flow [2022-07-22 21:42:10,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:42:10,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:42:10,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3693 transitions. [2022-07-22 21:42:10,461 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8851869606903164 [2022-07-22 21:42:10,462 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3693 transitions. [2022-07-22 21:42:10,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3693 transitions. [2022-07-22 21:42:10,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:10,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3693 transitions. [2022-07-22 21:42:10,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 527.5714285714286) internal successors, (3693), 7 states have internal predecessors, (3693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:10,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:10,468 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:10,468 INFO L186 Difference]: Start difference. First operand has 603 places, 611 transitions, 1692 flow. Second operand 7 states and 3693 transitions. [2022-07-22 21:42:10,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 665 transitions, 2113 flow [2022-07-22 21:42:10,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 609 places, 665 transitions, 2109 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-07-22 21:42:10,486 INFO L242 Difference]: Finished difference. Result has 612 places, 609 transitions, 1719 flow [2022-07-22 21:42:10,486 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1690, PETRI_DIFFERENCE_MINUEND_PLACES=603, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=597, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1719, PETRI_PLACES=612, PETRI_TRANSITIONS=609} [2022-07-22 21:42:10,487 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 85 predicate places. [2022-07-22 21:42:10,487 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 609 transitions, 1719 flow [2022-07-22 21:42:10,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:10,487 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:10,488 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:10,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 21:42:10,488 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:10,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:10,488 INFO L85 PathProgramCache]: Analyzing trace with hash 2012689126, now seen corresponding path program 3 times [2022-07-22 21:42:10,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:10,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289616228] [2022-07-22 21:42:10,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:10,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:10,561 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-22 21:42:10,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:10,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289616228] [2022-07-22 21:42:10,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289616228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:10,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:10,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:42:10,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870655859] [2022-07-22 21:42:10,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:10,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:42:10,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:10,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:42:10,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:42:10,564 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 596 [2022-07-22 21:42:10,566 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 609 transitions, 1719 flow. Second operand has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:10,566 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:10,566 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 596 [2022-07-22 21:42:10,566 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:11,552 INFO L129 PetriNetUnfolder]: 925/5917 cut-off events. [2022-07-22 21:42:11,553 INFO L130 PetriNetUnfolder]: For 2111/2112 co-relation queries the response was YES. [2022-07-22 21:42:11,600 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8804 conditions, 5917 events. 925/5917 cut-off events. For 2111/2112 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 54581 event pairs, 392 based on Foata normal form. 5/5407 useless extension candidates. Maximal degree in co-relation 8759. Up to 950 conditions per place. [2022-07-22 21:42:11,615 INFO L132 encePairwiseOnDemand]: 579/596 looper letters, 73 selfloop transitions, 21 changer transitions 11/648 dead transitions. [2022-07-22 21:42:11,616 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 648 transitions, 2096 flow [2022-07-22 21:42:11,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:42:11,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:42:11,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3681 transitions. [2022-07-22 21:42:11,619 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8823106423777565 [2022-07-22 21:42:11,619 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3681 transitions. [2022-07-22 21:42:11,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3681 transitions. [2022-07-22 21:42:11,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:11,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3681 transitions. [2022-07-22 21:42:11,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 525.8571428571429) internal successors, (3681), 7 states have internal predecessors, (3681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:11,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:11,626 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:11,626 INFO L186 Difference]: Start difference. First operand has 612 places, 609 transitions, 1719 flow. Second operand 7 states and 3681 transitions. [2022-07-22 21:42:11,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 648 transitions, 2096 flow [2022-07-22 21:42:11,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 648 transitions, 2074 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-07-22 21:42:11,644 INFO L242 Difference]: Finished difference. Result has 613 places, 618 transitions, 1791 flow [2022-07-22 21:42:11,645 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1697, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1791, PETRI_PLACES=613, PETRI_TRANSITIONS=618} [2022-07-22 21:42:11,645 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 86 predicate places. [2022-07-22 21:42:11,645 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 618 transitions, 1791 flow [2022-07-22 21:42:11,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:11,646 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:11,646 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:11,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 21:42:11,646 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:11,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:11,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1139441410, now seen corresponding path program 4 times [2022-07-22 21:42:11,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:11,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769483768] [2022-07-22 21:42:11,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:11,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:11,700 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-22 21:42:11,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:11,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769483768] [2022-07-22 21:42:11,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769483768] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:11,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:11,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:42:11,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187377897] [2022-07-22 21:42:11,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:11,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:42:11,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:11,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:42:11,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:42:11,703 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 514 out of 596 [2022-07-22 21:42:11,704 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 618 transitions, 1791 flow. Second operand has 5 states, 5 states have (on average 518.8) internal successors, (2594), 5 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:11,704 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:11,704 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 514 of 596 [2022-07-22 21:42:11,705 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:12,823 INFO L129 PetriNetUnfolder]: 890/5834 cut-off events. [2022-07-22 21:42:12,824 INFO L130 PetriNetUnfolder]: For 2420/2431 co-relation queries the response was YES. [2022-07-22 21:42:12,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9106 conditions, 5834 events. 890/5834 cut-off events. For 2420/2431 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 53710 event pairs, 342 based on Foata normal form. 3/5355 useless extension candidates. Maximal degree in co-relation 9061. Up to 863 conditions per place. [2022-07-22 21:42:12,908 INFO L132 encePairwiseOnDemand]: 576/596 looper letters, 76 selfloop transitions, 22 changer transitions 20/660 dead transitions. [2022-07-22 21:42:12,908 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 660 transitions, 2172 flow [2022-07-22 21:42:12,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:42:12,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:42:12,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3693 transitions. [2022-07-22 21:42:12,912 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8851869606903164 [2022-07-22 21:42:12,912 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3693 transitions. [2022-07-22 21:42:12,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3693 transitions. [2022-07-22 21:42:12,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:12,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3693 transitions. [2022-07-22 21:42:12,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 527.5714285714286) internal successors, (3693), 7 states have internal predecessors, (3693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:12,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:12,924 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:12,925 INFO L186 Difference]: Start difference. First operand has 613 places, 618 transitions, 1791 flow. Second operand 7 states and 3693 transitions. [2022-07-22 21:42:12,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 660 transitions, 2172 flow [2022-07-22 21:42:12,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 660 transitions, 2159 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:12,947 INFO L242 Difference]: Finished difference. Result has 620 places, 618 transitions, 1833 flow [2022-07-22 21:42:12,947 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1779, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1833, PETRI_PLACES=620, PETRI_TRANSITIONS=618} [2022-07-22 21:42:12,948 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 93 predicate places. [2022-07-22 21:42:12,948 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 618 transitions, 1833 flow [2022-07-22 21:42:12,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 518.8) internal successors, (2594), 5 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:12,949 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:12,949 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:12,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 21:42:12,949 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:12,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:12,950 INFO L85 PathProgramCache]: Analyzing trace with hash 995145401, now seen corresponding path program 1 times [2022-07-22 21:42:12,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:12,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086067959] [2022-07-22 21:42:12,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:12,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:13,064 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-22 21:42:13,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:13,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086067959] [2022-07-22 21:42:13,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086067959] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:13,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:13,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:42:13,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356821461] [2022-07-22 21:42:13,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:13,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:42:13,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:13,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:42:13,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:42:13,069 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 596 [2022-07-22 21:42:13,070 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 618 transitions, 1833 flow. Second operand has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:13,070 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:13,071 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 596 [2022-07-22 21:42:13,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:13,959 INFO L129 PetriNetUnfolder]: 613/4518 cut-off events. [2022-07-22 21:42:13,960 INFO L130 PetriNetUnfolder]: For 6066/6591 co-relation queries the response was YES. [2022-07-22 21:42:13,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7145 conditions, 4518 events. 613/4518 cut-off events. For 6066/6591 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 37419 event pairs, 81 based on Foata normal form. 138/4356 useless extension candidates. Maximal degree in co-relation 7097. Up to 565 conditions per place. [2022-07-22 21:42:13,993 INFO L132 encePairwiseOnDemand]: 588/596 looper letters, 81 selfloop transitions, 6 changer transitions 7/648 dead transitions. [2022-07-22 21:42:13,993 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 648 transitions, 2230 flow [2022-07-22 21:42:13,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 21:42:13,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-22 21:42:13,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3159 transitions. [2022-07-22 21:42:13,996 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8833892617449665 [2022-07-22 21:42:13,996 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3159 transitions. [2022-07-22 21:42:13,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3159 transitions. [2022-07-22 21:42:13,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:13,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3159 transitions. [2022-07-22 21:42:14,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 526.5) internal successors, (3159), 6 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:14,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 596.0) internal successors, (4172), 7 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:14,002 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 596.0) internal successors, (4172), 7 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:14,002 INFO L186 Difference]: Start difference. First operand has 620 places, 618 transitions, 1833 flow. Second operand 6 states and 3159 transitions. [2022-07-22 21:42:14,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 648 transitions, 2230 flow [2022-07-22 21:42:14,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 648 transitions, 2180 flow, removed 13 selfloop flow, removed 8 redundant places. [2022-07-22 21:42:14,018 INFO L242 Difference]: Finished difference. Result has 612 places, 618 transitions, 1820 flow [2022-07-22 21:42:14,018 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1803, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=612, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1820, PETRI_PLACES=612, PETRI_TRANSITIONS=618} [2022-07-22 21:42:14,019 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 85 predicate places. [2022-07-22 21:42:14,019 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 618 transitions, 1820 flow [2022-07-22 21:42:14,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:14,019 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:14,020 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:14,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 21:42:14,020 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:14,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:14,020 INFO L85 PathProgramCache]: Analyzing trace with hash -89357397, now seen corresponding path program 2 times [2022-07-22 21:42:14,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:14,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353680590] [2022-07-22 21:42:14,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:14,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:14,072 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-22 21:42:14,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:14,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353680590] [2022-07-22 21:42:14,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353680590] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:14,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:14,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:42:14,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526833200] [2022-07-22 21:42:14,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:14,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:42:14,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:14,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:42:14,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:42:14,075 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 596 [2022-07-22 21:42:14,076 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 618 transitions, 1820 flow. Second operand has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:14,076 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:14,076 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 596 [2022-07-22 21:42:14,076 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:14,939 INFO L129 PetriNetUnfolder]: 611/4937 cut-off events. [2022-07-22 21:42:14,939 INFO L130 PetriNetUnfolder]: For 2686/3211 co-relation queries the response was YES. [2022-07-22 21:42:14,983 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7768 conditions, 4937 events. 611/4937 cut-off events. For 2686/3211 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 42877 event pairs, 261 based on Foata normal form. 16/4676 useless extension candidates. Maximal degree in co-relation 7726. Up to 597 conditions per place. [2022-07-22 21:42:14,994 INFO L132 encePairwiseOnDemand]: 582/596 looper letters, 73 selfloop transitions, 14 changer transitions 22/663 dead transitions. [2022-07-22 21:42:14,994 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 618 places, 663 transitions, 2187 flow [2022-07-22 21:42:14,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:42:14,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:42:14,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3685 transitions. [2022-07-22 21:42:14,997 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8832694151486098 [2022-07-22 21:42:14,997 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3685 transitions. [2022-07-22 21:42:14,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3685 transitions. [2022-07-22 21:42:14,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:14,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3685 transitions. [2022-07-22 21:42:15,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 526.4285714285714) internal successors, (3685), 7 states have internal predecessors, (3685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:15,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:15,003 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:15,004 INFO L186 Difference]: Start difference. First operand has 612 places, 618 transitions, 1820 flow. Second operand 7 states and 3685 transitions. [2022-07-22 21:42:15,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 618 places, 663 transitions, 2187 flow [2022-07-22 21:42:15,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 663 transitions, 2163 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-22 21:42:15,024 INFO L242 Difference]: Finished difference. Result has 617 places, 618 transitions, 1846 flow [2022-07-22 21:42:15,025 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1806, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1846, PETRI_PLACES=617, PETRI_TRANSITIONS=618} [2022-07-22 21:42:15,026 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 90 predicate places. [2022-07-22 21:42:15,026 INFO L495 AbstractCegarLoop]: Abstraction has has 617 places, 618 transitions, 1846 flow [2022-07-22 21:42:15,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:15,026 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:15,027 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:15,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 21:42:15,027 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:15,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:15,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1375352423, now seen corresponding path program 3 times [2022-07-22 21:42:15,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:15,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725405153] [2022-07-22 21:42:15,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:15,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:15,106 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-22 21:42:15,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:15,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725405153] [2022-07-22 21:42:15,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725405153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:15,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:15,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:42:15,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870111759] [2022-07-22 21:42:15,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:15,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:42:15,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:15,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:42:15,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:42:15,109 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 596 [2022-07-22 21:42:15,110 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 617 places, 618 transitions, 1846 flow. Second operand has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:15,110 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:15,110 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 596 [2022-07-22 21:42:15,110 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:15,992 INFO L129 PetriNetUnfolder]: 659/5400 cut-off events. [2022-07-22 21:42:15,992 INFO L130 PetriNetUnfolder]: For 2790/3046 co-relation queries the response was YES. [2022-07-22 21:42:16,028 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8335 conditions, 5400 events. 659/5400 cut-off events. For 2790/3046 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 47520 event pairs, 208 based on Foata normal form. 20/5147 useless extension candidates. Maximal degree in co-relation 8291. Up to 646 conditions per place. [2022-07-22 21:42:16,038 INFO L132 encePairwiseOnDemand]: 579/596 looper letters, 73 selfloop transitions, 14 changer transitions 12/653 dead transitions. [2022-07-22 21:42:16,039 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 653 transitions, 2251 flow [2022-07-22 21:42:16,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:42:16,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:42:16,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3675 transitions. [2022-07-22 21:42:16,042 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8808724832214765 [2022-07-22 21:42:16,042 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3675 transitions. [2022-07-22 21:42:16,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3675 transitions. [2022-07-22 21:42:16,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:16,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3675 transitions. [2022-07-22 21:42:16,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 525.0) internal successors, (3675), 7 states have internal predecessors, (3675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:16,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:16,069 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:16,069 INFO L186 Difference]: Start difference. First operand has 617 places, 618 transitions, 1846 flow. Second operand 7 states and 3675 transitions. [2022-07-22 21:42:16,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 653 transitions, 2251 flow [2022-07-22 21:42:16,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 618 places, 653 transitions, 2247 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:16,121 INFO L242 Difference]: Finished difference. Result has 621 places, 622 transitions, 1901 flow [2022-07-22 21:42:16,122 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1842, PETRI_DIFFERENCE_MINUEND_PLACES=612, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1901, PETRI_PLACES=621, PETRI_TRANSITIONS=622} [2022-07-22 21:42:16,122 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 94 predicate places. [2022-07-22 21:42:16,123 INFO L495 AbstractCegarLoop]: Abstraction has has 621 places, 622 transitions, 1901 flow [2022-07-22 21:42:16,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:16,123 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:16,124 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:16,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 21:42:16,124 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:16,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:16,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1532751183, now seen corresponding path program 4 times [2022-07-22 21:42:16,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:16,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088491504] [2022-07-22 21:42:16,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:16,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:16,183 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-22 21:42:16,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:16,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088491504] [2022-07-22 21:42:16,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088491504] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:16,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:16,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:42:16,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182699281] [2022-07-22 21:42:16,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:16,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:42:16,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:16,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:42:16,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:42:16,187 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 596 [2022-07-22 21:42:16,188 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 622 transitions, 1901 flow. Second operand has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:16,188 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:16,188 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 596 [2022-07-22 21:42:16,188 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:17,064 INFO L129 PetriNetUnfolder]: 637/5190 cut-off events. [2022-07-22 21:42:17,064 INFO L130 PetriNetUnfolder]: For 3027/3284 co-relation queries the response was YES. [2022-07-22 21:42:17,112 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8245 conditions, 5190 events. 637/5190 cut-off events. For 3027/3284 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 45654 event pairs, 224 based on Foata normal form. 19/4948 useless extension candidates. Maximal degree in co-relation 8199. Up to 600 conditions per place. [2022-07-22 21:42:17,126 INFO L132 encePairwiseOnDemand]: 581/596 looper letters, 62 selfloop transitions, 11 changer transitions 24/643 dead transitions. [2022-07-22 21:42:17,126 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 643 transitions, 2206 flow [2022-07-22 21:42:17,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:42:17,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:42:17,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3663 transitions. [2022-07-22 21:42:17,129 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8779961649089166 [2022-07-22 21:42:17,129 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3663 transitions. [2022-07-22 21:42:17,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3663 transitions. [2022-07-22 21:42:17,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:17,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3663 transitions. [2022-07-22 21:42:17,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 523.2857142857143) internal successors, (3663), 7 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:17,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:17,135 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:17,135 INFO L186 Difference]: Start difference. First operand has 621 places, 622 transitions, 1901 flow. Second operand 7 states and 3663 transitions. [2022-07-22 21:42:17,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 643 transitions, 2206 flow [2022-07-22 21:42:17,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 622 places, 643 transitions, 2182 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-07-22 21:42:17,160 INFO L242 Difference]: Finished difference. Result has 624 places, 612 transitions, 1825 flow [2022-07-22 21:42:17,161 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1878, PETRI_DIFFERENCE_MINUEND_PLACES=616, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=611, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1825, PETRI_PLACES=624, PETRI_TRANSITIONS=612} [2022-07-22 21:42:17,161 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 97 predicate places. [2022-07-22 21:42:17,162 INFO L495 AbstractCegarLoop]: Abstraction has has 624 places, 612 transitions, 1825 flow [2022-07-22 21:42:17,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:17,162 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:17,162 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:17,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 21:42:17,163 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:17,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:17,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1498306728, now seen corresponding path program 1 times [2022-07-22 21:42:17,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:17,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658382691] [2022-07-22 21:42:17,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:17,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:17,219 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-22 21:42:17,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:17,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658382691] [2022-07-22 21:42:17,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658382691] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:17,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:17,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:42:17,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892653553] [2022-07-22 21:42:17,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:17,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:42:17,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:17,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:42:17,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:42:17,222 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 514 out of 596 [2022-07-22 21:42:17,223 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 612 transitions, 1825 flow. Second operand has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:17,223 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:17,223 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 514 of 596 [2022-07-22 21:42:17,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:17,996 INFO L129 PetriNetUnfolder]: 766/4560 cut-off events. [2022-07-22 21:42:17,996 INFO L130 PetriNetUnfolder]: For 3123/3123 co-relation queries the response was YES. [2022-07-22 21:42:18,036 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7241 conditions, 4560 events. 766/4560 cut-off events. For 3123/3123 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 39576 event pairs, 88 based on Foata normal form. 33/4168 useless extension candidates. Maximal degree in co-relation 7196. Up to 723 conditions per place. [2022-07-22 21:42:18,047 INFO L132 encePairwiseOnDemand]: 587/596 looper letters, 70 selfloop transitions, 10 changer transitions 6/624 dead transitions. [2022-07-22 21:42:18,047 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 624 transitions, 2002 flow [2022-07-22 21:42:18,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 21:42:18,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-22 21:42:18,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3159 transitions. [2022-07-22 21:42:18,050 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8833892617449665 [2022-07-22 21:42:18,050 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3159 transitions. [2022-07-22 21:42:18,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3159 transitions. [2022-07-22 21:42:18,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:18,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3159 transitions. [2022-07-22 21:42:18,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 526.5) internal successors, (3159), 6 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:18,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 596.0) internal successors, (4172), 7 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:18,055 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 596.0) internal successors, (4172), 7 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:18,055 INFO L186 Difference]: Start difference. First operand has 624 places, 612 transitions, 1825 flow. Second operand 6 states and 3159 transitions. [2022-07-22 21:42:18,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 624 transitions, 2002 flow [2022-07-22 21:42:18,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 624 transitions, 1902 flow, removed 21 selfloop flow, removed 18 redundant places. [2022-07-22 21:42:18,070 INFO L242 Difference]: Finished difference. Result has 598 places, 601 transitions, 1671 flow [2022-07-22 21:42:18,071 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1651, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1671, PETRI_PLACES=598, PETRI_TRANSITIONS=601} [2022-07-22 21:42:18,072 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 71 predicate places. [2022-07-22 21:42:18,072 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 601 transitions, 1671 flow [2022-07-22 21:42:18,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:18,072 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:18,072 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:18,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-22 21:42:18,073 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:18,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:18,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1888013672, now seen corresponding path program 1 times [2022-07-22 21:42:18,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:18,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774095586] [2022-07-22 21:42:18,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:18,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:18,154 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-22 21:42:18,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:18,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774095586] [2022-07-22 21:42:18,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774095586] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:18,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:18,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:42:18,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391691952] [2022-07-22 21:42:18,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:18,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:42:18,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:18,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:42:18,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:42:18,157 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 514 out of 596 [2022-07-22 21:42:18,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 601 transitions, 1671 flow. Second operand has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:18,158 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:18,158 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 514 of 596 [2022-07-22 21:42:18,158 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:18,891 INFO L129 PetriNetUnfolder]: 731/4575 cut-off events. [2022-07-22 21:42:18,891 INFO L130 PetriNetUnfolder]: For 871/871 co-relation queries the response was YES. [2022-07-22 21:42:18,924 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6937 conditions, 4575 events. 731/4575 cut-off events. For 871/871 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 39099 event pairs, 220 based on Foata normal form. 2/4099 useless extension candidates. Maximal degree in co-relation 6906. Up to 718 conditions per place. [2022-07-22 21:42:18,935 INFO L132 encePairwiseOnDemand]: 580/596 looper letters, 54 selfloop transitions, 13 changer transitions 20/620 dead transitions. [2022-07-22 21:42:18,935 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 620 transitions, 1896 flow [2022-07-22 21:42:18,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:42:18,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:42:18,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3673 transitions. [2022-07-22 21:42:18,938 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8803930968360498 [2022-07-22 21:42:18,938 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3673 transitions. [2022-07-22 21:42:18,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3673 transitions. [2022-07-22 21:42:18,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:18,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3673 transitions. [2022-07-22 21:42:18,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 524.7142857142857) internal successors, (3673), 7 states have internal predecessors, (3673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:18,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:18,943 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:18,943 INFO L186 Difference]: Start difference. First operand has 598 places, 601 transitions, 1671 flow. Second operand 7 states and 3673 transitions. [2022-07-22 21:42:18,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 620 transitions, 1896 flow [2022-07-22 21:42:18,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 620 transitions, 1874 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-07-22 21:42:18,957 INFO L242 Difference]: Finished difference. Result has 598 places, 593 transitions, 1626 flow [2022-07-22 21:42:18,958 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1643, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=587, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1626, PETRI_PLACES=598, PETRI_TRANSITIONS=593} [2022-07-22 21:42:18,962 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 71 predicate places. [2022-07-22 21:42:18,962 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 593 transitions, 1626 flow [2022-07-22 21:42:18,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:18,963 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:18,963 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:18,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-22 21:42:18,963 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:18,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:18,964 INFO L85 PathProgramCache]: Analyzing trace with hash -735550188, now seen corresponding path program 1 times [2022-07-22 21:42:18,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:18,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617327580] [2022-07-22 21:42:18,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:18,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:19,150 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-22 21:42:19,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:19,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617327580] [2022-07-22 21:42:19,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617327580] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:19,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:19,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:42:19,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187344416] [2022-07-22 21:42:19,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:19,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:42:19,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:19,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:42:19,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:42:19,155 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 480 out of 596 [2022-07-22 21:42:19,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 593 transitions, 1626 flow. Second operand has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:19,158 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:19,158 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 480 of 596 [2022-07-22 21:42:19,158 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:23,460 INFO L129 PetriNetUnfolder]: 3189/14835 cut-off events. [2022-07-22 21:42:23,461 INFO L130 PetriNetUnfolder]: For 1038/1039 co-relation queries the response was YES. [2022-07-22 21:42:23,543 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22785 conditions, 14835 events. 3189/14835 cut-off events. For 1038/1039 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 159477 event pairs, 1395 based on Foata normal form. 0/13630 useless extension candidates. Maximal degree in co-relation 22756. Up to 3187 conditions per place. [2022-07-22 21:42:23,574 INFO L132 encePairwiseOnDemand]: 570/596 looper letters, 491 selfloop transitions, 91 changer transitions 3/1092 dead transitions. [2022-07-22 21:42:23,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 1092 transitions, 3863 flow [2022-07-22 21:42:23,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-07-22 21:42:23,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-07-22 21:42:23,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 29387 transitions. [2022-07-22 21:42:23,589 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8217841163310962 [2022-07-22 21:42:23,590 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 29387 transitions. [2022-07-22 21:42:23,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 29387 transitions. [2022-07-22 21:42:23,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:23,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 29387 transitions. [2022-07-22 21:42:23,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 489.78333333333336) internal successors, (29387), 60 states have internal predecessors, (29387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:23,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 596.0) internal successors, (36356), 61 states have internal predecessors, (36356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:23,640 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 596.0) internal successors, (36356), 61 states have internal predecessors, (36356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:23,640 INFO L186 Difference]: Start difference. First operand has 598 places, 593 transitions, 1626 flow. Second operand 60 states and 29387 transitions. [2022-07-22 21:42:23,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 646 places, 1092 transitions, 3863 flow [2022-07-22 21:42:23,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 635 places, 1092 transitions, 3775 flow, removed 28 selfloop flow, removed 11 redundant places. [2022-07-22 21:42:23,670 INFO L242 Difference]: Finished difference. Result has 681 places, 672 transitions, 2172 flow [2022-07-22 21:42:23,671 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=2172, PETRI_PLACES=681, PETRI_TRANSITIONS=672} [2022-07-22 21:42:23,671 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 154 predicate places. [2022-07-22 21:42:23,671 INFO L495 AbstractCegarLoop]: Abstraction has has 681 places, 672 transitions, 2172 flow [2022-07-22 21:42:23,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:23,673 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:23,673 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:23,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-22 21:42:23,673 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:23,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:23,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1399218664, now seen corresponding path program 2 times [2022-07-22 21:42:23,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:23,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280689553] [2022-07-22 21:42:23,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:23,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:23,869 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-22 21:42:23,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:23,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280689553] [2022-07-22 21:42:23,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280689553] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:23,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:23,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:42:23,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517621088] [2022-07-22 21:42:23,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:23,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:42:23,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:23,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:42:23,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:42:23,874 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 480 out of 596 [2022-07-22 21:42:23,877 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 681 places, 672 transitions, 2172 flow. Second operand has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:23,877 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:23,877 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 480 of 596 [2022-07-22 21:42:23,877 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:29,063 INFO L129 PetriNetUnfolder]: 3385/16101 cut-off events. [2022-07-22 21:42:29,064 INFO L130 PetriNetUnfolder]: For 5590/5590 co-relation queries the response was YES. [2022-07-22 21:42:29,156 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27872 conditions, 16101 events. 3385/16101 cut-off events. For 5590/5590 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 175126 event pairs, 1491 based on Foata normal form. 2/14955 useless extension candidates. Maximal degree in co-relation 27804. Up to 3157 conditions per place. [2022-07-22 21:42:29,186 INFO L132 encePairwiseOnDemand]: 570/596 looper letters, 516 selfloop transitions, 138 changer transitions 3/1164 dead transitions. [2022-07-22 21:42:29,186 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 740 places, 1164 transitions, 5201 flow [2022-07-22 21:42:29,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-07-22 21:42:29,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-07-22 21:42:29,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 29379 transitions. [2022-07-22 21:42:29,224 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8215604026845638 [2022-07-22 21:42:29,225 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 29379 transitions. [2022-07-22 21:42:29,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 29379 transitions. [2022-07-22 21:42:29,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:29,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 29379 transitions. [2022-07-22 21:42:29,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 489.65) internal successors, (29379), 60 states have internal predecessors, (29379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:29,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 596.0) internal successors, (36356), 61 states have internal predecessors, (36356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:29,276 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 596.0) internal successors, (36356), 61 states have internal predecessors, (36356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:29,277 INFO L186 Difference]: Start difference. First operand has 681 places, 672 transitions, 2172 flow. Second operand 60 states and 29379 transitions. [2022-07-22 21:42:29,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 740 places, 1164 transitions, 5201 flow [2022-07-22 21:42:29,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 729 places, 1164 transitions, 4817 flow, removed 6 selfloop flow, removed 11 redundant places. [2022-07-22 21:42:29,325 INFO L242 Difference]: Finished difference. Result has 775 places, 752 transitions, 3116 flow [2022-07-22 21:42:29,326 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=2092, PETRI_DIFFERENCE_MINUEND_PLACES=670, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=3116, PETRI_PLACES=775, PETRI_TRANSITIONS=752} [2022-07-22 21:42:29,326 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 248 predicate places. [2022-07-22 21:42:29,326 INFO L495 AbstractCegarLoop]: Abstraction has has 775 places, 752 transitions, 3116 flow [2022-07-22 21:42:29,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:29,327 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:29,328 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:29,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-22 21:42:29,328 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:29,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:29,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1507332030, now seen corresponding path program 3 times [2022-07-22 21:42:29,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:29,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4814613] [2022-07-22 21:42:29,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:29,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:29,514 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-22 21:42:29,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:29,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4814613] [2022-07-22 21:42:29,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4814613] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:29,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:29,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:42:29,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674208267] [2022-07-22 21:42:29,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:29,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:42:29,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:29,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:42:29,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:42:29,518 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 480 out of 596 [2022-07-22 21:42:29,521 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 775 places, 752 transitions, 3116 flow. Second operand has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:29,521 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:29,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 480 of 596 [2022-07-22 21:42:29,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:35,133 INFO L129 PetriNetUnfolder]: 3338/15469 cut-off events. [2022-07-22 21:42:35,133 INFO L130 PetriNetUnfolder]: For 16535/16535 co-relation queries the response was YES. [2022-07-22 21:42:35,261 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30890 conditions, 15469 events. 3338/15469 cut-off events. For 16535/16535 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 167956 event pairs, 1413 based on Foata normal form. 2/14363 useless extension candidates. Maximal degree in co-relation 30776. Up to 3187 conditions per place. [2022-07-22 21:42:35,292 INFO L132 encePairwiseOnDemand]: 570/596 looper letters, 510 selfloop transitions, 167 changer transitions 3/1187 dead transitions. [2022-07-22 21:42:35,292 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 832 places, 1187 transitions, 7502 flow [2022-07-22 21:42:35,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-07-22 21:42:35,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-07-22 21:42:35,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 28365 transitions. [2022-07-22 21:42:35,304 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8205565841240453 [2022-07-22 21:42:35,304 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 28365 transitions. [2022-07-22 21:42:35,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 28365 transitions. [2022-07-22 21:42:35,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:35,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 28365 transitions. [2022-07-22 21:42:35,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 489.05172413793105) internal successors, (28365), 58 states have internal predecessors, (28365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:35,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 596.0) internal successors, (35164), 59 states have internal predecessors, (35164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:35,346 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 596.0) internal successors, (35164), 59 states have internal predecessors, (35164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:35,346 INFO L186 Difference]: Start difference. First operand has 775 places, 752 transitions, 3116 flow. Second operand 58 states and 28365 transitions. [2022-07-22 21:42:35,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 832 places, 1187 transitions, 7502 flow [2022-07-22 21:42:35,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 821 places, 1187 transitions, 6763 flow, removed 140 selfloop flow, removed 11 redundant places. [2022-07-22 21:42:35,426 INFO L242 Difference]: Finished difference. Result has 865 places, 829 transitions, 4161 flow [2022-07-22 21:42:35,426 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=2692, PETRI_DIFFERENCE_MINUEND_PLACES=764, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=650, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=4161, PETRI_PLACES=865, PETRI_TRANSITIONS=829} [2022-07-22 21:42:35,427 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 338 predicate places. [2022-07-22 21:42:35,427 INFO L495 AbstractCegarLoop]: Abstraction has has 865 places, 829 transitions, 4161 flow [2022-07-22 21:42:35,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:35,428 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:35,428 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:35,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-22 21:42:35,428 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:35,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:35,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1836048088, now seen corresponding path program 4 times [2022-07-22 21:42:35,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:35,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004761349] [2022-07-22 21:42:35,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:35,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:35,612 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-22 21:42:35,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:35,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004761349] [2022-07-22 21:42:35,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004761349] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:35,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:35,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:42:35,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371746540] [2022-07-22 21:42:35,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:35,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:42:35,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:35,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:42:35,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:42:35,617 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 480 out of 596 [2022-07-22 21:42:35,620 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 865 places, 829 transitions, 4161 flow. Second operand has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:35,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:35,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 480 of 596 [2022-07-22 21:42:35,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:42,010 INFO L129 PetriNetUnfolder]: 3619/17040 cut-off events. [2022-07-22 21:42:42,011 INFO L130 PetriNetUnfolder]: For 37670/37670 co-relation queries the response was YES. [2022-07-22 21:42:42,226 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37355 conditions, 17040 events. 3619/17040 cut-off events. For 37670/37670 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 187650 event pairs, 1499 based on Foata normal form. 2/15895 useless extension candidates. Maximal degree in co-relation 37197. Up to 3157 conditions per place. [2022-07-22 21:42:42,263 INFO L132 encePairwiseOnDemand]: 570/596 looper letters, 569 selfloop transitions, 206 changer transitions 3/1285 dead transitions. [2022-07-22 21:42:42,263 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 922 places, 1285 transitions, 9457 flow [2022-07-22 21:42:42,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-07-22 21:42:42,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-07-22 21:42:42,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 28362 transitions. [2022-07-22 21:42:42,275 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8204697986577181 [2022-07-22 21:42:42,276 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 28362 transitions. [2022-07-22 21:42:42,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 28362 transitions. [2022-07-22 21:42:42,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:42,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 28362 transitions. [2022-07-22 21:42:42,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 489.0) internal successors, (28362), 58 states have internal predecessors, (28362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:42,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 596.0) internal successors, (35164), 59 states have internal predecessors, (35164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:42,324 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 596.0) internal successors, (35164), 59 states have internal predecessors, (35164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:42,324 INFO L186 Difference]: Start difference. First operand has 865 places, 829 transitions, 4161 flow. Second operand 58 states and 28362 transitions. [2022-07-22 21:42:42,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 922 places, 1285 transitions, 9457 flow [2022-07-22 21:42:42,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 917 places, 1285 transitions, 8527 flow, removed 403 selfloop flow, removed 5 redundant places. [2022-07-22 21:42:42,552 INFO L242 Difference]: Finished difference. Result has 961 places, 906 transitions, 5420 flow [2022-07-22 21:42:42,553 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=3521, PETRI_DIFFERENCE_MINUEND_PLACES=860, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=829, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=5420, PETRI_PLACES=961, PETRI_TRANSITIONS=906} [2022-07-22 21:42:42,553 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 434 predicate places. [2022-07-22 21:42:42,553 INFO L495 AbstractCegarLoop]: Abstraction has has 961 places, 906 transitions, 5420 flow [2022-07-22 21:42:42,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:42,555 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:42,555 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:42,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-22 21:42:42,555 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:42,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:42,556 INFO L85 PathProgramCache]: Analyzing trace with hash 102389314, now seen corresponding path program 5 times [2022-07-22 21:42:42,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:42,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384430630] [2022-07-22 21:42:42,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:42,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:42,742 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-22 21:42:42,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:42,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384430630] [2022-07-22 21:42:42,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384430630] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:42,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:42,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:42:42,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723604091] [2022-07-22 21:42:42,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:42,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:42:42,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:42,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:42:42,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:42:42,748 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 480 out of 596 [2022-07-22 21:42:42,752 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 961 places, 906 transitions, 5420 flow. Second operand has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:42,752 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:42,752 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 480 of 596 [2022-07-22 21:42:42,752 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:50,180 INFO L129 PetriNetUnfolder]: 3679/17461 cut-off events. [2022-07-22 21:42:50,180 INFO L130 PetriNetUnfolder]: For 65683/65683 co-relation queries the response was YES. [2022-07-22 21:42:50,639 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42842 conditions, 17461 events. 3679/17461 cut-off events. For 65683/65683 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 193500 event pairs, 1548 based on Foata normal form. 2/16222 useless extension candidates. Maximal degree in co-relation 42641. Up to 3187 conditions per place. [2022-07-22 21:42:50,678 INFO L132 encePairwiseOnDemand]: 570/596 looper letters, 629 selfloop transitions, 204 changer transitions 3/1343 dead transitions. [2022-07-22 21:42:50,679 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1018 places, 1343 transitions, 12259 flow [2022-07-22 21:42:50,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-07-22 21:42:50,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-07-22 21:42:50,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 28349 transitions. [2022-07-22 21:42:50,690 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8200937283036335 [2022-07-22 21:42:50,691 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 28349 transitions. [2022-07-22 21:42:50,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 28349 transitions. [2022-07-22 21:42:50,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:50,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 28349 transitions. [2022-07-22 21:42:50,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 488.7758620689655) internal successors, (28349), 58 states have internal predecessors, (28349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:50,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 596.0) internal successors, (35164), 59 states have internal predecessors, (35164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:50,738 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 596.0) internal successors, (35164), 59 states have internal predecessors, (35164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:50,739 INFO L186 Difference]: Start difference. First operand has 961 places, 906 transitions, 5420 flow. Second operand 58 states and 28349 transitions. [2022-07-22 21:42:50,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1018 places, 1343 transitions, 12259 flow [2022-07-22 21:42:51,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1013 places, 1343 transitions, 10901 flow, removed 607 selfloop flow, removed 5 redundant places. [2022-07-22 21:42:51,125 INFO L242 Difference]: Finished difference. Result has 1058 places, 984 transitions, 6820 flow [2022-07-22 21:42:51,126 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=4478, PETRI_DIFFERENCE_MINUEND_PLACES=956, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=906, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=766, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=6820, PETRI_PLACES=1058, PETRI_TRANSITIONS=984} [2022-07-22 21:42:51,127 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 531 predicate places. [2022-07-22 21:42:51,127 INFO L495 AbstractCegarLoop]: Abstraction has has 1058 places, 984 transitions, 6820 flow [2022-07-22 21:42:51,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:51,128 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:51,128 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:51,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-22 21:42:51,128 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:42:51,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:51,129 INFO L85 PathProgramCache]: Analyzing trace with hash -547522178, now seen corresponding path program 6 times [2022-07-22 21:42:51,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:51,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354263192] [2022-07-22 21:42:51,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:51,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:51,301 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-22 21:42:51,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:51,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354263192] [2022-07-22 21:42:51,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354263192] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:51,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:51,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:42:51,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628810578] [2022-07-22 21:42:51,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:51,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:42:51,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:51,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:42:51,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:42:51,305 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 480 out of 596 [2022-07-22 21:42:51,308 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1058 places, 984 transitions, 6820 flow. Second operand has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:51,309 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:51,309 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 480 of 596 [2022-07-22 21:42:51,309 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:59,658 INFO L129 PetriNetUnfolder]: 3898/18288 cut-off events. [2022-07-22 21:42:59,658 INFO L130 PetriNetUnfolder]: For 109343/109343 co-relation queries the response was YES. [2022-07-22 21:43:00,018 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49810 conditions, 18288 events. 3898/18288 cut-off events. For 109343/109343 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 203269 event pairs, 1516 based on Foata normal form. 2/17101 useless extension candidates. Maximal degree in co-relation 49565. Up to 3157 conditions per place. [2022-07-22 21:43:00,061 INFO L132 encePairwiseOnDemand]: 570/596 looper letters, 699 selfloop transitions, 235 changer transitions 3/1444 dead transitions. [2022-07-22 21:43:00,061 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1115 places, 1444 transitions, 14774 flow [2022-07-22 21:43:00,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-07-22 21:43:00,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-07-22 21:43:00,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 28347 transitions. [2022-07-22 21:43:00,082 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8200358713260819 [2022-07-22 21:43:00,083 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 28347 transitions. [2022-07-22 21:43:00,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 28347 transitions. [2022-07-22 21:43:00,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:43:00,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 28347 transitions. [2022-07-22 21:43:00,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 488.7413793103448) internal successors, (28347), 58 states have internal predecessors, (28347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:00,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 596.0) internal successors, (35164), 59 states have internal predecessors, (35164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:00,128 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 596.0) internal successors, (35164), 59 states have internal predecessors, (35164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:00,128 INFO L186 Difference]: Start difference. First operand has 1058 places, 984 transitions, 6820 flow. Second operand 58 states and 28347 transitions. [2022-07-22 21:43:00,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1115 places, 1444 transitions, 14774 flow [2022-07-22 21:43:01,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1110 places, 1444 transitions, 12990 flow, removed 820 selfloop flow, removed 5 redundant places. [2022-07-22 21:43:01,030 INFO L242 Difference]: Finished difference. Result has 1155 places, 1062 transitions, 8306 flow [2022-07-22 21:43:01,030 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=5542, PETRI_DIFFERENCE_MINUEND_PLACES=1053, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=984, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=813, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=8306, PETRI_PLACES=1155, PETRI_TRANSITIONS=1062} [2022-07-22 21:43:01,031 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 628 predicate places. [2022-07-22 21:43:01,031 INFO L495 AbstractCegarLoop]: Abstraction has has 1155 places, 1062 transitions, 8306 flow [2022-07-22 21:43:01,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:01,032 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:43:01,032 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:43:01,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-22 21:43:01,032 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:43:01,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:43:01,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1249611816, now seen corresponding path program 7 times [2022-07-22 21:43:01,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:43:01,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294911200] [2022-07-22 21:43:01,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:43:01,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:43:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:43:01,222 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-22 21:43:01,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:43:01,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294911200] [2022-07-22 21:43:01,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294911200] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:43:01,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:43:01,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:43:01,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886326425] [2022-07-22 21:43:01,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:43:01,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:43:01,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:43:01,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:43:01,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:43:01,227 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 480 out of 596 [2022-07-22 21:43:01,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1155 places, 1062 transitions, 8306 flow. Second operand has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:01,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:43:01,229 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 480 of 596 [2022-07-22 21:43:01,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand