./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7850c8f92b7e0b0b866687e8f3ea719169cacbc5985a977f15b280bf9bb53b5b --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:04:13,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:04:13,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:04:13,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:04:13,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:04:13,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:04:13,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:04:13,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:04:13,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:04:13,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:04:13,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:04:13,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:04:13,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:04:13,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:04:13,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:04:13,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:04:13,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:04:13,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:04:13,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:04:13,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:04:13,307 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:04:13,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:04:13,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:04:13,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:04:13,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:04:13,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:04:13,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:04:13,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:04:13,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:04:13,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:04:13,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:04:13,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:04:13,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:04:13,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:04:13,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:04:13,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:04:13,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:04:13,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:04:13,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:04:13,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:04:13,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:04:13,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:04:13,330 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:04:13,357 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:04:13,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:04:13,358 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:04:13,358 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:04:13,359 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:04:13,359 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:04:13,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:04:13,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:04:13,360 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:04:13,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:04:13,361 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:04:13,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:04:13,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:04:13,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:04:13,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:04:13,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:04:13,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:04:13,363 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:04:13,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:04:13,363 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:04:13,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:04:13,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:04:13,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:04:13,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:04:13,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:04:13,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:04:13,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:04:13,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:04:13,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:04:13,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:04:13,365 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:04:13,365 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:04:13,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:04:13,366 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7850c8f92b7e0b0b866687e8f3ea719169cacbc5985a977f15b280bf9bb53b5b [2022-07-13 22:04:13,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:04:13,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:04:13,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:04:13,602 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:04:13,602 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:04:13,603 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c [2022-07-13 22:04:13,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9accc341e/e1724108e9fe4ad98cc87470bbcf875c/FLAGa6b403c2c [2022-07-13 22:04:13,999 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:04:13,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c [2022-07-13 22:04:14,012 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9accc341e/e1724108e9fe4ad98cc87470bbcf875c/FLAGa6b403c2c [2022-07-13 22:04:14,428 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9accc341e/e1724108e9fe4ad98cc87470bbcf875c [2022-07-13 22:04:14,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:04:14,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:04:14,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:04:14,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:04:14,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:04:14,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:04:14" (1/1) ... [2022-07-13 22:04:14,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3af998cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:14, skipping insertion in model container [2022-07-13 22:04:14,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:04:14" (1/1) ... [2022-07-13 22:04:14,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:04:14,456 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:04:14,600 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c[2817,2830] [2022-07-13 22:04:14,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:04:14,612 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:04:14,644 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c[2817,2830] [2022-07-13 22:04:14,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:04:14,657 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:04:14,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:14 WrapperNode [2022-07-13 22:04:14,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:04:14,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:04:14,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:04:14,659 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:04:14,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:14" (1/1) ... [2022-07-13 22:04:14,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:14" (1/1) ... [2022-07-13 22:04:14,698 INFO L137 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 217 [2022-07-13 22:04:14,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:04:14,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:04:14,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:04:14,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:04:14,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:14" (1/1) ... [2022-07-13 22:04:14,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:14" (1/1) ... [2022-07-13 22:04:14,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:14" (1/1) ... [2022-07-13 22:04:14,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:14" (1/1) ... [2022-07-13 22:04:14,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:14" (1/1) ... [2022-07-13 22:04:14,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:14" (1/1) ... [2022-07-13 22:04:14,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:14" (1/1) ... [2022-07-13 22:04:14,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:04:14,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:04:14,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:04:14,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:04:14,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:14" (1/1) ... [2022-07-13 22:04:14,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:04:14,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:04:14,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 22:04:14,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 22:04:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:04:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:04:14,815 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:04:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:04:14,815 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:04:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-13 22:04:14,815 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-13 22:04:14,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:04:14,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:04:14,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:04:14,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:04:14,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:04:14,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:04:14,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:04:14,818 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:04:14,897 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:04:14,899 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:04:15,255 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:04:15,266 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:04:15,266 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 22:04:15,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:04:15 BoogieIcfgContainer [2022-07-13 22:04:15,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:04:15,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:04:15,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:04:15,274 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:04:15,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:04:14" (1/3) ... [2022-07-13 22:04:15,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aba6138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:04:15, skipping insertion in model container [2022-07-13 22:04:15,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:14" (2/3) ... [2022-07-13 22:04:15,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aba6138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:04:15, skipping insertion in model container [2022-07-13 22:04:15,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:04:15" (3/3) ... [2022-07-13 22:04:15,278 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-file-item-trans.wvr.c [2022-07-13 22:04:15,284 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:04:15,290 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:04:15,291 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:04:15,291 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:04:15,372 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-13 22:04:15,418 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 263 places, 278 transitions, 580 flow [2022-07-13 22:04:15,550 INFO L129 PetriNetUnfolder]: 25/275 cut-off events. [2022-07-13 22:04:15,550 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 22:04:15,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 275 events. 25/275 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 737 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 199. Up to 2 conditions per place. [2022-07-13 22:04:15,560 INFO L82 GeneralOperation]: Start removeDead. Operand has 263 places, 278 transitions, 580 flow [2022-07-13 22:04:15,572 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 264 transitions, 546 flow [2022-07-13 22:04:15,589 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:04:15,597 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@3b40958a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@18b306c1 [2022-07-13 22:04:15,597 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-13 22:04:15,661 INFO L129 PetriNetUnfolder]: 25/263 cut-off events. [2022-07-13 22:04:15,661 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 22:04:15,662 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:15,662 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:15,663 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:15,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:15,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1520883517, now seen corresponding path program 1 times [2022-07-13 22:04:15,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:15,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815817454] [2022-07-13 22:04:15,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:15,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:15,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:15,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:15,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815817454] [2022-07-13 22:04:15,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815817454] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:15,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:15,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:15,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736950648] [2022-07-13 22:04:15,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:15,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:15,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:16,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:16,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:16,022 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 278 [2022-07-13 22:04:16,027 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 264 transitions, 546 flow. Second operand has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,028 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:16,028 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 278 [2022-07-13 22:04:16,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:16,193 INFO L129 PetriNetUnfolder]: 59/695 cut-off events. [2022-07-13 22:04:16,194 INFO L130 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-07-13 22:04:16,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 695 events. 59/695 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3821 event pairs, 5 based on Foata normal form. 39/656 useless extension candidates. Maximal degree in co-relation 519. Up to 23 conditions per place. [2022-07-13 22:04:16,206 INFO L132 encePairwiseOnDemand]: 267/278 looper letters, 17 selfloop transitions, 2 changer transitions 1/264 dead transitions. [2022-07-13 22:04:16,207 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 264 transitions, 599 flow [2022-07-13 22:04:16,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:16,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:16,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 809 transitions. [2022-07-13 22:04:16,230 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9700239808153477 [2022-07-13 22:04:16,231 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 809 transitions. [2022-07-13 22:04:16,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 809 transitions. [2022-07-13 22:04:16,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:16,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 809 transitions. [2022-07-13 22:04:16,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 269.6666666666667) internal successors, (809), 3 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,272 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,274 INFO L186 Difference]: Start difference. First operand has 249 places, 264 transitions, 546 flow. Second operand 3 states and 809 transitions. [2022-07-13 22:04:16,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 264 transitions, 599 flow [2022-07-13 22:04:16,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 264 transitions, 577 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-13 22:04:16,288 INFO L242 Difference]: Finished difference. Result has 247 places, 258 transitions, 538 flow [2022-07-13 22:04:16,290 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=538, PETRI_PLACES=247, PETRI_TRANSITIONS=258} [2022-07-13 22:04:16,295 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, -2 predicate places. [2022-07-13 22:04:16,296 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 258 transitions, 538 flow [2022-07-13 22:04:16,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,297 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:16,297 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:16,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:04:16,298 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:16,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:16,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1354549505, now seen corresponding path program 1 times [2022-07-13 22:04:16,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:16,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654169813] [2022-07-13 22:04:16,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:16,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:16,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:16,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:16,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654169813] [2022-07-13 22:04:16,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654169813] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:16,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:16,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:16,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081811270] [2022-07-13 22:04:16,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:16,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:16,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:16,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:16,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:16,458 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 278 [2022-07-13 22:04:16,459 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 258 transitions, 538 flow. Second operand has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,459 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:16,459 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 278 [2022-07-13 22:04:16,463 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:16,610 INFO L129 PetriNetUnfolder]: 49/605 cut-off events. [2022-07-13 22:04:16,611 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-07-13 22:04:16,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 671 conditions, 605 events. 49/605 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2949 event pairs, 6 based on Foata normal form. 4/550 useless extension candidates. Maximal degree in co-relation 506. Up to 20 conditions per place. [2022-07-13 22:04:16,619 INFO L132 encePairwiseOnDemand]: 272/278 looper letters, 17 selfloop transitions, 4 changer transitions 0/265 dead transitions. [2022-07-13 22:04:16,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 265 transitions, 603 flow [2022-07-13 22:04:16,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:16,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:16,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 795 transitions. [2022-07-13 22:04:16,622 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9532374100719424 [2022-07-13 22:04:16,622 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 795 transitions. [2022-07-13 22:04:16,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 795 transitions. [2022-07-13 22:04:16,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:16,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 795 transitions. [2022-07-13 22:04:16,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,628 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,628 INFO L186 Difference]: Start difference. First operand has 247 places, 258 transitions, 538 flow. Second operand 3 states and 795 transitions. [2022-07-13 22:04:16,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 265 transitions, 603 flow [2022-07-13 22:04:16,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 265 transitions, 601 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:04:16,638 INFO L242 Difference]: Finished difference. Result has 249 places, 260 transitions, 568 flow [2022-07-13 22:04:16,638 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=568, PETRI_PLACES=249, PETRI_TRANSITIONS=260} [2022-07-13 22:04:16,639 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 0 predicate places. [2022-07-13 22:04:16,639 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 260 transitions, 568 flow [2022-07-13 22:04:16,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,640 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:16,641 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:16,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:04:16,642 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:16,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:16,643 INFO L85 PathProgramCache]: Analyzing trace with hash 98904019, now seen corresponding path program 1 times [2022-07-13 22:04:16,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:16,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257504213] [2022-07-13 22:04:16,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:16,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:16,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:16,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:16,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257504213] [2022-07-13 22:04:16,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257504213] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:16,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:16,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:16,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377058209] [2022-07-13 22:04:16,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:16,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:16,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:16,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:16,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:16,729 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 278 [2022-07-13 22:04:16,730 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 260 transitions, 568 flow. Second operand has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,731 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:16,731 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 278 [2022-07-13 22:04:16,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:16,932 INFO L129 PetriNetUnfolder]: 119/1449 cut-off events. [2022-07-13 22:04:16,932 INFO L130 PetriNetUnfolder]: For 33/39 co-relation queries the response was YES. [2022-07-13 22:04:16,945 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1588 conditions, 1449 events. 119/1449 cut-off events. For 33/39 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 11862 event pairs, 13 based on Foata normal form. 0/1292 useless extension candidates. Maximal degree in co-relation 909. Up to 54 conditions per place. [2022-07-13 22:04:16,951 INFO L132 encePairwiseOnDemand]: 270/278 looper letters, 17 selfloop transitions, 5 changer transitions 0/268 dead transitions. [2022-07-13 22:04:16,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 268 transitions, 633 flow [2022-07-13 22:04:16,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:16,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:16,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 793 transitions. [2022-07-13 22:04:16,955 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9508393285371702 [2022-07-13 22:04:16,955 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 793 transitions. [2022-07-13 22:04:16,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 793 transitions. [2022-07-13 22:04:16,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:16,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 793 transitions. [2022-07-13 22:04:16,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,961 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,961 INFO L186 Difference]: Start difference. First operand has 249 places, 260 transitions, 568 flow. Second operand 3 states and 793 transitions. [2022-07-13 22:04:16,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 268 transitions, 633 flow [2022-07-13 22:04:16,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 268 transitions, 621 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-13 22:04:16,968 INFO L242 Difference]: Finished difference. Result has 251 places, 263 transitions, 594 flow [2022-07-13 22:04:16,969 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=594, PETRI_PLACES=251, PETRI_TRANSITIONS=263} [2022-07-13 22:04:16,971 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 2 predicate places. [2022-07-13 22:04:16,971 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 263 transitions, 594 flow [2022-07-13 22:04:16,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:16,972 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:16,972 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:16,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 22:04:16,973 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:16,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:16,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1842374523, now seen corresponding path program 2 times [2022-07-13 22:04:16,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:16,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463299576] [2022-07-13 22:04:16,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:16,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:17,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:17,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:17,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463299576] [2022-07-13 22:04:17,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463299576] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:17,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:17,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:17,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714973618] [2022-07-13 22:04:17,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:17,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:17,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:17,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:17,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:17,087 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 278 [2022-07-13 22:04:17,088 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 263 transitions, 594 flow. Second operand has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:17,088 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:17,088 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 278 [2022-07-13 22:04:17,088 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:17,264 INFO L129 PetriNetUnfolder]: 103/1263 cut-off events. [2022-07-13 22:04:17,265 INFO L130 PetriNetUnfolder]: For 84/90 co-relation queries the response was YES. [2022-07-13 22:04:17,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1432 conditions, 1263 events. 103/1263 cut-off events. For 84/90 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 9658 event pairs, 13 based on Foata normal form. 10/1151 useless extension candidates. Maximal degree in co-relation 789. Up to 39 conditions per place. [2022-07-13 22:04:17,282 INFO L132 encePairwiseOnDemand]: 272/278 looper letters, 22 selfloop transitions, 3 changer transitions 0/271 dead transitions. [2022-07-13 22:04:17,282 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 271 transitions, 671 flow [2022-07-13 22:04:17,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:17,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:17,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 793 transitions. [2022-07-13 22:04:17,285 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9508393285371702 [2022-07-13 22:04:17,285 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 793 transitions. [2022-07-13 22:04:17,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 793 transitions. [2022-07-13 22:04:17,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:17,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 793 transitions. [2022-07-13 22:04:17,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:17,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:17,294 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:17,295 INFO L186 Difference]: Start difference. First operand has 251 places, 263 transitions, 594 flow. Second operand 3 states and 793 transitions. [2022-07-13 22:04:17,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 271 transitions, 671 flow [2022-07-13 22:04:17,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 271 transitions, 661 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 22:04:17,301 INFO L242 Difference]: Finished difference. Result has 253 places, 266 transitions, 620 flow [2022-07-13 22:04:17,301 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=620, PETRI_PLACES=253, PETRI_TRANSITIONS=266} [2022-07-13 22:04:17,303 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 4 predicate places. [2022-07-13 22:04:17,304 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 266 transitions, 620 flow [2022-07-13 22:04:17,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:17,305 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:17,305 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:17,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 22:04:17,306 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:17,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:17,306 INFO L85 PathProgramCache]: Analyzing trace with hash 386728125, now seen corresponding path program 1 times [2022-07-13 22:04:17,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:17,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103828019] [2022-07-13 22:04:17,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:17,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:17,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:17,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:17,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103828019] [2022-07-13 22:04:17,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103828019] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:17,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:17,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:04:17,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867110230] [2022-07-13 22:04:17,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:17,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:04:17,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:17,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:04:17,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:04:17,454 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 278 [2022-07-13 22:04:17,456 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 266 transitions, 620 flow. Second operand has 7 states, 7 states have (on average 253.28571428571428) internal successors, (1773), 7 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:17,456 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:17,456 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 278 [2022-07-13 22:04:17,456 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:17,663 INFO L129 PetriNetUnfolder]: 118/1068 cut-off events. [2022-07-13 22:04:17,664 INFO L130 PetriNetUnfolder]: For 61/92 co-relation queries the response was YES. [2022-07-13 22:04:17,675 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1400 conditions, 1068 events. 118/1068 cut-off events. For 61/92 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 8650 event pairs, 20 based on Foata normal form. 3/984 useless extension candidates. Maximal degree in co-relation 764. Up to 103 conditions per place. [2022-07-13 22:04:17,679 INFO L132 encePairwiseOnDemand]: 269/278 looper letters, 20 selfloop transitions, 6 changer transitions 7/281 dead transitions. [2022-07-13 22:04:17,679 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 281 transitions, 724 flow [2022-07-13 22:04:17,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:04:17,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:04:17,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1791 transitions. [2022-07-13 22:04:17,684 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.920349434737924 [2022-07-13 22:04:17,684 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1791 transitions. [2022-07-13 22:04:17,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1791 transitions. [2022-07-13 22:04:17,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:17,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1791 transitions. [2022-07-13 22:04:17,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 255.85714285714286) internal successors, (1791), 7 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:17,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 278.0) internal successors, (2224), 8 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:17,693 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 278.0) internal successors, (2224), 8 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:17,693 INFO L186 Difference]: Start difference. First operand has 253 places, 266 transitions, 620 flow. Second operand 7 states and 1791 transitions. [2022-07-13 22:04:17,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 281 transitions, 724 flow [2022-07-13 22:04:17,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 281 transitions, 715 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-07-13 22:04:17,699 INFO L242 Difference]: Finished difference. Result has 263 places, 270 transitions, 655 flow [2022-07-13 22:04:17,699 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=655, PETRI_PLACES=263, PETRI_TRANSITIONS=270} [2022-07-13 22:04:17,700 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 14 predicate places. [2022-07-13 22:04:17,700 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 270 transitions, 655 flow [2022-07-13 22:04:17,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 253.28571428571428) internal successors, (1773), 7 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:17,702 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:17,702 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:17,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 22:04:17,702 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:17,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:17,703 INFO L85 PathProgramCache]: Analyzing trace with hash -932884603, now seen corresponding path program 1 times [2022-07-13 22:04:17,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:17,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814940490] [2022-07-13 22:04:17,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:17,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:17,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:17,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:17,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814940490] [2022-07-13 22:04:17,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814940490] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:17,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:17,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:17,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733525653] [2022-07-13 22:04:17,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:17,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:17,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:17,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:17,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:17,747 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 278 [2022-07-13 22:04:17,748 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 270 transitions, 655 flow. Second operand has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:17,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:17,749 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 278 [2022-07-13 22:04:17,749 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:18,111 INFO L129 PetriNetUnfolder]: 185/2665 cut-off events. [2022-07-13 22:04:18,111 INFO L130 PetriNetUnfolder]: For 110/157 co-relation queries the response was YES. [2022-07-13 22:04:18,127 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3284 conditions, 2665 events. 185/2665 cut-off events. For 110/157 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 27676 event pairs, 44 based on Foata normal form. 0/2410 useless extension candidates. Maximal degree in co-relation 3248. Up to 149 conditions per place. [2022-07-13 22:04:18,134 INFO L132 encePairwiseOnDemand]: 268/278 looper letters, 18 selfloop transitions, 6 changer transitions 0/278 dead transitions. [2022-07-13 22:04:18,135 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 278 transitions, 723 flow [2022-07-13 22:04:18,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:18,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:18,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 790 transitions. [2022-07-13 22:04:18,137 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.947242206235012 [2022-07-13 22:04:18,137 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 790 transitions. [2022-07-13 22:04:18,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 790 transitions. [2022-07-13 22:04:18,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:18,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 790 transitions. [2022-07-13 22:04:18,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:18,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:18,142 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:18,142 INFO L186 Difference]: Start difference. First operand has 263 places, 270 transitions, 655 flow. Second operand 3 states and 790 transitions. [2022-07-13 22:04:18,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 278 transitions, 723 flow [2022-07-13 22:04:18,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 278 transitions, 717 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-07-13 22:04:18,149 INFO L242 Difference]: Finished difference. Result has 262 places, 274 transitions, 697 flow [2022-07-13 22:04:18,149 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=697, PETRI_PLACES=262, PETRI_TRANSITIONS=274} [2022-07-13 22:04:18,150 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 13 predicate places. [2022-07-13 22:04:18,150 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 274 transitions, 697 flow [2022-07-13 22:04:18,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:18,151 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:18,151 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:18,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 22:04:18,152 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:18,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:18,152 INFO L85 PathProgramCache]: Analyzing trace with hash 408976517, now seen corresponding path program 2 times [2022-07-13 22:04:18,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:18,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592695750] [2022-07-13 22:04:18,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:18,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:18,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:18,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:18,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592695750] [2022-07-13 22:04:18,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592695750] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:18,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:18,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:18,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369841123] [2022-07-13 22:04:18,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:18,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:18,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:18,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:18,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:18,197 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 278 [2022-07-13 22:04:18,198 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 274 transitions, 697 flow. Second operand has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:18,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:18,199 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 278 [2022-07-13 22:04:18,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:18,499 INFO L129 PetriNetUnfolder]: 151/2281 cut-off events. [2022-07-13 22:04:18,500 INFO L130 PetriNetUnfolder]: For 223/268 co-relation queries the response was YES. [2022-07-13 22:04:18,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2844 conditions, 2281 events. 151/2281 cut-off events. For 223/268 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 21128 event pairs, 26 based on Foata normal form. 28/2132 useless extension candidates. Maximal degree in co-relation 2111. Up to 100 conditions per place. [2022-07-13 22:04:18,522 INFO L132 encePairwiseOnDemand]: 270/278 looper letters, 24 selfloop transitions, 4 changer transitions 0/282 dead transitions. [2022-07-13 22:04:18,522 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 282 transitions, 781 flow [2022-07-13 22:04:18,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:18,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:18,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 790 transitions. [2022-07-13 22:04:18,525 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.947242206235012 [2022-07-13 22:04:18,525 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 790 transitions. [2022-07-13 22:04:18,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 790 transitions. [2022-07-13 22:04:18,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:18,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 790 transitions. [2022-07-13 22:04:18,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:18,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:18,529 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:18,529 INFO L186 Difference]: Start difference. First operand has 262 places, 274 transitions, 697 flow. Second operand 3 states and 790 transitions. [2022-07-13 22:04:18,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 282 transitions, 781 flow [2022-07-13 22:04:18,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 282 transitions, 769 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 22:04:18,536 INFO L242 Difference]: Finished difference. Result has 264 places, 278 transitions, 733 flow [2022-07-13 22:04:18,536 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=733, PETRI_PLACES=264, PETRI_TRANSITIONS=278} [2022-07-13 22:04:18,537 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 15 predicate places. [2022-07-13 22:04:18,537 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 278 transitions, 733 flow [2022-07-13 22:04:18,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:18,538 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:18,538 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:18,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 22:04:18,539 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:18,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:18,539 INFO L85 PathProgramCache]: Analyzing trace with hash -876327181, now seen corresponding path program 1 times [2022-07-13 22:04:18,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:18,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942798445] [2022-07-13 22:04:18,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:18,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:18,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:18,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:18,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942798445] [2022-07-13 22:04:18,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942798445] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:18,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:18,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:04:18,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979007820] [2022-07-13 22:04:18,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:18,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:04:18,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:18,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:04:18,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:04:18,658 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 278 [2022-07-13 22:04:18,659 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 278 transitions, 733 flow. Second operand has 7 states, 7 states have (on average 249.85714285714286) internal successors, (1749), 7 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:18,660 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:18,660 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 278 [2022-07-13 22:04:18,660 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:19,254 INFO L129 PetriNetUnfolder]: 597/4157 cut-off events. [2022-07-13 22:04:19,255 INFO L130 PetriNetUnfolder]: For 536/805 co-relation queries the response was YES. [2022-07-13 22:04:19,283 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6066 conditions, 4157 events. 597/4157 cut-off events. For 536/805 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 47066 event pairs, 368 based on Foata normal form. 47/3922 useless extension candidates. Maximal degree in co-relation 4264. Up to 887 conditions per place. [2022-07-13 22:04:19,296 INFO L132 encePairwiseOnDemand]: 266/278 looper letters, 31 selfloop transitions, 15 changer transitions 7/308 dead transitions. [2022-07-13 22:04:19,296 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 308 transitions, 922 flow [2022-07-13 22:04:19,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:04:19,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 22:04:19,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2276 transitions. [2022-07-13 22:04:19,302 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9096722621902478 [2022-07-13 22:04:19,302 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2276 transitions. [2022-07-13 22:04:19,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2276 transitions. [2022-07-13 22:04:19,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:19,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2276 transitions. [2022-07-13 22:04:19,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 252.88888888888889) internal successors, (2276), 9 states have internal predecessors, (2276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,313 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,313 INFO L186 Difference]: Start difference. First operand has 264 places, 278 transitions, 733 flow. Second operand 9 states and 2276 transitions. [2022-07-13 22:04:19,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 308 transitions, 922 flow [2022-07-13 22:04:19,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 308 transitions, 910 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-07-13 22:04:19,321 INFO L242 Difference]: Finished difference. Result has 278 places, 290 transitions, 831 flow [2022-07-13 22:04:19,322 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=831, PETRI_PLACES=278, PETRI_TRANSITIONS=290} [2022-07-13 22:04:19,323 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 29 predicate places. [2022-07-13 22:04:19,323 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 290 transitions, 831 flow [2022-07-13 22:04:19,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 249.85714285714286) internal successors, (1749), 7 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,324 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:19,324 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:19,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 22:04:19,324 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:19,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:19,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1337683571, now seen corresponding path program 2 times [2022-07-13 22:04:19,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:19,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015691496] [2022-07-13 22:04:19,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:19,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:19,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:19,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:19,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015691496] [2022-07-13 22:04:19,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015691496] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:19,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:19,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:04:19,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600069126] [2022-07-13 22:04:19,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:19,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:04:19,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:19,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:04:19,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:04:19,437 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 278 [2022-07-13 22:04:19,439 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 290 transitions, 831 flow. Second operand has 7 states, 7 states have (on average 253.28571428571428) internal successors, (1773), 7 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,439 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:19,440 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 278 [2022-07-13 22:04:19,440 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:19,866 INFO L129 PetriNetUnfolder]: 267/2493 cut-off events. [2022-07-13 22:04:19,866 INFO L130 PetriNetUnfolder]: For 565/678 co-relation queries the response was YES. [2022-07-13 22:04:19,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4041 conditions, 2493 events. 267/2493 cut-off events. For 565/678 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 26436 event pairs, 107 based on Foata normal form. 3/2328 useless extension candidates. Maximal degree in co-relation 4002. Up to 339 conditions per place. [2022-07-13 22:04:19,897 INFO L132 encePairwiseOnDemand]: 270/278 looper letters, 17 selfloop transitions, 7 changer transitions 20/304 dead transitions. [2022-07-13 22:04:19,897 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 304 transitions, 952 flow [2022-07-13 22:04:19,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:04:19,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 22:04:19,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2296 transitions. [2022-07-13 22:04:19,902 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9176658673061551 [2022-07-13 22:04:19,902 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2296 transitions. [2022-07-13 22:04:19,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2296 transitions. [2022-07-13 22:04:19,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:19,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2296 transitions. [2022-07-13 22:04:19,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 255.11111111111111) internal successors, (2296), 9 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,913 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,913 INFO L186 Difference]: Start difference. First operand has 278 places, 290 transitions, 831 flow. Second operand 9 states and 2296 transitions. [2022-07-13 22:04:19,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 304 transitions, 952 flow [2022-07-13 22:04:19,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 304 transitions, 946 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-07-13 22:04:19,924 INFO L242 Difference]: Finished difference. Result has 285 places, 284 transitions, 819 flow [2022-07-13 22:04:19,925 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=819, PETRI_PLACES=285, PETRI_TRANSITIONS=284} [2022-07-13 22:04:19,926 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 36 predicate places. [2022-07-13 22:04:19,926 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 284 transitions, 819 flow [2022-07-13 22:04:19,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 253.28571428571428) internal successors, (1773), 7 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:19,927 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:19,927 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:19,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 22:04:19,927 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:19,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:19,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1671544335, now seen corresponding path program 1 times [2022-07-13 22:04:19,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:19,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75355841] [2022-07-13 22:04:19,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:19,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:20,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:20,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:20,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75355841] [2022-07-13 22:04:20,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75355841] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:20,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:20,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:04:20,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460727001] [2022-07-13 22:04:20,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:20,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:04:20,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:20,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:04:20,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:04:20,017 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 278 [2022-07-13 22:04:20,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 284 transitions, 819 flow. Second operand has 8 states, 8 states have (on average 249.5) internal successors, (1996), 8 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:20,019 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:20,019 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 278 [2022-07-13 22:04:20,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:20,511 INFO L129 PetriNetUnfolder]: 514/3416 cut-off events. [2022-07-13 22:04:20,511 INFO L130 PetriNetUnfolder]: For 1572/1735 co-relation queries the response was YES. [2022-07-13 22:04:20,543 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6154 conditions, 3416 events. 514/3416 cut-off events. For 1572/1735 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 37551 event pairs, 285 based on Foata normal form. 22/3167 useless extension candidates. Maximal degree in co-relation 6123. Up to 663 conditions per place. [2022-07-13 22:04:20,552 INFO L132 encePairwiseOnDemand]: 268/278 looper letters, 36 selfloop transitions, 7 changer transitions 18/313 dead transitions. [2022-07-13 22:04:20,553 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 313 transitions, 1063 flow [2022-07-13 22:04:20,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:04:20,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 22:04:20,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2522 transitions. [2022-07-13 22:04:20,558 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9071942446043165 [2022-07-13 22:04:20,558 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2522 transitions. [2022-07-13 22:04:20,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2522 transitions. [2022-07-13 22:04:20,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:20,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2522 transitions. [2022-07-13 22:04:20,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 252.2) internal successors, (2522), 10 states have internal predecessors, (2522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:20,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 278.0) internal successors, (3058), 11 states have internal predecessors, (3058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:20,576 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 278.0) internal successors, (3058), 11 states have internal predecessors, (3058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:20,576 INFO L186 Difference]: Start difference. First operand has 285 places, 284 transitions, 819 flow. Second operand 10 states and 2522 transitions. [2022-07-13 22:04:20,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 313 transitions, 1063 flow [2022-07-13 22:04:20,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 313 transitions, 1056 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-07-13 22:04:20,644 INFO L242 Difference]: Finished difference. Result has 295 places, 285 transitions, 859 flow [2022-07-13 22:04:20,645 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=859, PETRI_PLACES=295, PETRI_TRANSITIONS=285} [2022-07-13 22:04:20,645 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 46 predicate places. [2022-07-13 22:04:20,646 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 285 transitions, 859 flow [2022-07-13 22:04:20,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 249.5) internal successors, (1996), 8 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:20,646 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:20,646 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:20,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 22:04:20,647 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:20,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:20,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1283281750, now seen corresponding path program 1 times [2022-07-13 22:04:20,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:20,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862540749] [2022-07-13 22:04:20,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:20,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:20,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:20,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:20,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862540749] [2022-07-13 22:04:20,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862540749] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:20,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:20,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:04:20,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645830938] [2022-07-13 22:04:20,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:20,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:04:20,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:20,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:04:20,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:04:20,724 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 278 [2022-07-13 22:04:20,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 285 transitions, 859 flow. Second operand has 7 states, 7 states have (on average 253.28571428571428) internal successors, (1773), 7 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:20,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:20,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 278 [2022-07-13 22:04:20,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:21,000 INFO L129 PetriNetUnfolder]: 125/1855 cut-off events. [2022-07-13 22:04:21,001 INFO L130 PetriNetUnfolder]: For 352/449 co-relation queries the response was YES. [2022-07-13 22:04:21,021 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2735 conditions, 1855 events. 125/1855 cut-off events. For 352/449 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 18027 event pairs, 22 based on Foata normal form. 2/1719 useless extension candidates. Maximal degree in co-relation 2704. Up to 78 conditions per place. [2022-07-13 22:04:21,026 INFO L132 encePairwiseOnDemand]: 270/278 looper letters, 18 selfloop transitions, 2 changer transitions 17/305 dead transitions. [2022-07-13 22:04:21,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 305 transitions, 1002 flow [2022-07-13 22:04:21,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:04:21,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 22:04:21,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2297 transitions. [2022-07-13 22:04:21,031 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9180655475619505 [2022-07-13 22:04:21,031 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2297 transitions. [2022-07-13 22:04:21,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2297 transitions. [2022-07-13 22:04:21,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:21,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2297 transitions. [2022-07-13 22:04:21,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 255.22222222222223) internal successors, (2297), 9 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:21,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:21,040 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:21,041 INFO L186 Difference]: Start difference. First operand has 295 places, 285 transitions, 859 flow. Second operand 9 states and 2297 transitions. [2022-07-13 22:04:21,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 305 transitions, 1002 flow [2022-07-13 22:04:21,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 305 transitions, 979 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-07-13 22:04:21,050 INFO L242 Difference]: Finished difference. Result has 302 places, 286 transitions, 865 flow [2022-07-13 22:04:21,050 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=865, PETRI_PLACES=302, PETRI_TRANSITIONS=286} [2022-07-13 22:04:21,051 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 53 predicate places. [2022-07-13 22:04:21,051 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 286 transitions, 865 flow [2022-07-13 22:04:21,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 253.28571428571428) internal successors, (1773), 7 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:21,052 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:21,052 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:21,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 22:04:21,052 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:21,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:21,053 INFO L85 PathProgramCache]: Analyzing trace with hash -14993302, now seen corresponding path program 1 times [2022-07-13 22:04:21,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:21,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329153502] [2022-07-13 22:04:21,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:21,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:21,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:21,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:21,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329153502] [2022-07-13 22:04:21,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329153502] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:21,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:21,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:21,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382462236] [2022-07-13 22:04:21,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:21,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:21,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:21,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:21,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:21,143 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 278 [2022-07-13 22:04:21,143 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 286 transitions, 865 flow. Second operand has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:21,144 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:21,144 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 278 [2022-07-13 22:04:21,144 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:21,445 INFO L129 PetriNetUnfolder]: 104/2029 cut-off events. [2022-07-13 22:04:21,446 INFO L130 PetriNetUnfolder]: For 344/449 co-relation queries the response was YES. [2022-07-13 22:04:21,470 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2917 conditions, 2029 events. 104/2029 cut-off events. For 344/449 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 19656 event pairs, 19 based on Foata normal form. 3/1878 useless extension candidates. Maximal degree in co-relation 2882. Up to 90 conditions per place. [2022-07-13 22:04:21,476 INFO L132 encePairwiseOnDemand]: 272/278 looper letters, 15 selfloop transitions, 4 changer transitions 0/293 dead transitions. [2022-07-13 22:04:21,477 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 293 transitions, 922 flow [2022-07-13 22:04:21,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:21,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:21,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 795 transitions. [2022-07-13 22:04:21,480 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9532374100719424 [2022-07-13 22:04:21,480 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 795 transitions. [2022-07-13 22:04:21,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 795 transitions. [2022-07-13 22:04:21,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:21,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 795 transitions. [2022-07-13 22:04:21,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:21,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:21,484 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:21,484 INFO L186 Difference]: Start difference. First operand has 302 places, 286 transitions, 865 flow. Second operand 3 states and 795 transitions. [2022-07-13 22:04:21,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 293 transitions, 922 flow [2022-07-13 22:04:21,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 293 transitions, 909 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-07-13 22:04:21,495 INFO L242 Difference]: Finished difference. Result has 295 places, 288 transitions, 880 flow [2022-07-13 22:04:21,495 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=880, PETRI_PLACES=295, PETRI_TRANSITIONS=288} [2022-07-13 22:04:21,497 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 46 predicate places. [2022-07-13 22:04:21,497 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 288 transitions, 880 flow [2022-07-13 22:04:21,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:21,497 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:21,498 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:21,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 22:04:21,498 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:21,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:21,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1202030338, now seen corresponding path program 1 times [2022-07-13 22:04:21,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:21,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843462499] [2022-07-13 22:04:21,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:21,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:21,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:21,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:21,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843462499] [2022-07-13 22:04:21,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843462499] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:21,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:21,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:21,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963141276] [2022-07-13 22:04:21,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:21,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:21,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:21,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:21,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:21,540 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 278 [2022-07-13 22:04:21,540 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 288 transitions, 880 flow. Second operand has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:21,540 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:21,541 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 278 [2022-07-13 22:04:21,541 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:22,083 INFO L129 PetriNetUnfolder]: 201/3760 cut-off events. [2022-07-13 22:04:22,083 INFO L130 PetriNetUnfolder]: For 932/1118 co-relation queries the response was YES. [2022-07-13 22:04:22,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5429 conditions, 3760 events. 201/3760 cut-off events. For 932/1118 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 43969 event pairs, 48 based on Foata normal form. 7/3497 useless extension candidates. Maximal degree in co-relation 5262. Up to 130 conditions per place. [2022-07-13 22:04:22,132 INFO L132 encePairwiseOnDemand]: 270/278 looper letters, 17 selfloop transitions, 5 changer transitions 0/296 dead transitions. [2022-07-13 22:04:22,132 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 296 transitions, 945 flow [2022-07-13 22:04:22,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:22,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:22,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 793 transitions. [2022-07-13 22:04:22,135 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9508393285371702 [2022-07-13 22:04:22,135 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 793 transitions. [2022-07-13 22:04:22,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 793 transitions. [2022-07-13 22:04:22,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:22,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 793 transitions. [2022-07-13 22:04:22,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,139 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,139 INFO L186 Difference]: Start difference. First operand has 295 places, 288 transitions, 880 flow. Second operand 3 states and 793 transitions. [2022-07-13 22:04:22,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 296 transitions, 945 flow [2022-07-13 22:04:22,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 296 transitions, 937 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 22:04:22,151 INFO L242 Difference]: Finished difference. Result has 297 places, 291 transitions, 910 flow [2022-07-13 22:04:22,152 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=910, PETRI_PLACES=297, PETRI_TRANSITIONS=291} [2022-07-13 22:04:22,152 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 48 predicate places. [2022-07-13 22:04:22,152 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 291 transitions, 910 flow [2022-07-13 22:04:22,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,153 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:22,153 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:22,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 22:04:22,153 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:22,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:22,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1270908768, now seen corresponding path program 2 times [2022-07-13 22:04:22,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:22,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186248024] [2022-07-13 22:04:22,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:22,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:22,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:22,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:22,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186248024] [2022-07-13 22:04:22,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186248024] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:22,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:22,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:22,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558092703] [2022-07-13 22:04:22,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:22,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:22,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:22,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:22,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:22,186 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 278 [2022-07-13 22:04:22,186 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 291 transitions, 910 flow. Second operand has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,187 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:22,187 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 278 [2022-07-13 22:04:22,187 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:22,563 INFO L129 PetriNetUnfolder]: 154/3010 cut-off events. [2022-07-13 22:04:22,564 INFO L130 PetriNetUnfolder]: For 1022/1237 co-relation queries the response was YES. [2022-07-13 22:04:22,604 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4519 conditions, 3010 events. 154/3010 cut-off events. For 1022/1237 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 32087 event pairs, 44 based on Foata normal form. 25/2830 useless extension candidates. Maximal degree in co-relation 4342. Up to 111 conditions per place. [2022-07-13 22:04:22,615 INFO L132 encePairwiseOnDemand]: 272/278 looper letters, 22 selfloop transitions, 3 changer transitions 0/299 dead transitions. [2022-07-13 22:04:22,616 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 299 transitions, 987 flow [2022-07-13 22:04:22,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:22,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:22,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 793 transitions. [2022-07-13 22:04:22,618 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9508393285371702 [2022-07-13 22:04:22,618 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 793 transitions. [2022-07-13 22:04:22,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 793 transitions. [2022-07-13 22:04:22,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:22,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 793 transitions. [2022-07-13 22:04:22,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,622 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,623 INFO L186 Difference]: Start difference. First operand has 297 places, 291 transitions, 910 flow. Second operand 3 states and 793 transitions. [2022-07-13 22:04:22,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 299 transitions, 987 flow [2022-07-13 22:04:22,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 299 transitions, 977 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 22:04:22,636 INFO L242 Difference]: Finished difference. Result has 299 places, 294 transitions, 936 flow [2022-07-13 22:04:22,637 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=936, PETRI_PLACES=299, PETRI_TRANSITIONS=294} [2022-07-13 22:04:22,638 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 50 predicate places. [2022-07-13 22:04:22,638 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 294 transitions, 936 flow [2022-07-13 22:04:22,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,638 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:22,639 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:22,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 22:04:22,639 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:22,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:22,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1750302656, now seen corresponding path program 1 times [2022-07-13 22:04:22,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:22,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471260340] [2022-07-13 22:04:22,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:22,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:22,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:22,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:22,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471260340] [2022-07-13 22:04:22,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471260340] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:22,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:22,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:22,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372214283] [2022-07-13 22:04:22,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:22,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:22,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:22,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:22,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:22,673 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 278 [2022-07-13 22:04:22,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 294 transitions, 936 flow. Second operand has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:22,674 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:22,674 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 278 [2022-07-13 22:04:22,674 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:22,985 INFO L129 PetriNetUnfolder]: 126/2616 cut-off events. [2022-07-13 22:04:22,985 INFO L130 PetriNetUnfolder]: For 603/762 co-relation queries the response was YES. [2022-07-13 22:04:23,010 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3832 conditions, 2616 events. 126/2616 cut-off events. For 603/762 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 25825 event pairs, 29 based on Foata normal form. 3/2437 useless extension candidates. Maximal degree in co-relation 3681. Up to 116 conditions per place. [2022-07-13 22:04:23,016 INFO L132 encePairwiseOnDemand]: 274/278 looper letters, 19 selfloop transitions, 2 changer transitions 0/301 dead transitions. [2022-07-13 22:04:23,017 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 301 transitions, 1001 flow [2022-07-13 22:04:23,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:23,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:23,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 795 transitions. [2022-07-13 22:04:23,019 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9532374100719424 [2022-07-13 22:04:23,019 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 795 transitions. [2022-07-13 22:04:23,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 795 transitions. [2022-07-13 22:04:23,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:23,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 795 transitions. [2022-07-13 22:04:23,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:23,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:23,023 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:23,023 INFO L186 Difference]: Start difference. First operand has 299 places, 294 transitions, 936 flow. Second operand 3 states and 795 transitions. [2022-07-13 22:04:23,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 301 transitions, 1001 flow [2022-07-13 22:04:23,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 301 transitions, 992 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-07-13 22:04:23,033 INFO L242 Difference]: Finished difference. Result has 302 places, 296 transitions, 951 flow [2022-07-13 22:04:23,034 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=951, PETRI_PLACES=302, PETRI_TRANSITIONS=296} [2022-07-13 22:04:23,034 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 53 predicate places. [2022-07-13 22:04:23,034 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 296 transitions, 951 flow [2022-07-13 22:04:23,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:23,035 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:23,035 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:23,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 22:04:23,035 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:23,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:23,036 INFO L85 PathProgramCache]: Analyzing trace with hash 188483036, now seen corresponding path program 1 times [2022-07-13 22:04:23,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:23,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738239621] [2022-07-13 22:04:23,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:23,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:23,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:23,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:23,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738239621] [2022-07-13 22:04:23,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738239621] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:23,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:23,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:23,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728186525] [2022-07-13 22:04:23,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:23,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:23,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:23,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:23,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:23,149 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 278 [2022-07-13 22:04:23,151 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 296 transitions, 951 flow. Second operand has 10 states, 10 states have (on average 243.4) internal successors, (2434), 10 states have internal predecessors, (2434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:23,151 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:23,151 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 278 [2022-07-13 22:04:23,151 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:24,087 INFO L129 PetriNetUnfolder]: 1357/6298 cut-off events. [2022-07-13 22:04:24,088 INFO L130 PetriNetUnfolder]: For 6032/7110 co-relation queries the response was YES. [2022-07-13 22:04:24,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13577 conditions, 6298 events. 1357/6298 cut-off events. For 6032/7110 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 73856 event pairs, 718 based on Foata normal form. 76/5790 useless extension candidates. Maximal degree in co-relation 12234. Up to 1531 conditions per place. [2022-07-13 22:04:24,154 INFO L132 encePairwiseOnDemand]: 263/278 looper letters, 87 selfloop transitions, 19 changer transitions 12/375 dead transitions. [2022-07-13 22:04:24,154 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 375 transitions, 1594 flow [2022-07-13 22:04:24,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:04:24,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:04:24,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4438 transitions. [2022-07-13 22:04:24,162 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8868904876099121 [2022-07-13 22:04:24,163 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4438 transitions. [2022-07-13 22:04:24,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4438 transitions. [2022-07-13 22:04:24,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:24,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4438 transitions. [2022-07-13 22:04:24,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 246.55555555555554) internal successors, (4438), 18 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 278.0) internal successors, (5282), 19 states have internal predecessors, (5282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,181 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 278.0) internal successors, (5282), 19 states have internal predecessors, (5282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,182 INFO L186 Difference]: Start difference. First operand has 302 places, 296 transitions, 951 flow. Second operand 18 states and 4438 transitions. [2022-07-13 22:04:24,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 375 transitions, 1594 flow [2022-07-13 22:04:24,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 375 transitions, 1588 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-13 22:04:24,212 INFO L242 Difference]: Finished difference. Result has 329 places, 307 transitions, 1092 flow [2022-07-13 22:04:24,213 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1092, PETRI_PLACES=329, PETRI_TRANSITIONS=307} [2022-07-13 22:04:24,213 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 80 predicate places. [2022-07-13 22:04:24,213 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 307 transitions, 1092 flow [2022-07-13 22:04:24,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 243.4) internal successors, (2434), 10 states have internal predecessors, (2434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,216 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:24,216 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:24,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 22:04:24,216 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:24,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:24,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1504883712, now seen corresponding path program 1 times [2022-07-13 22:04:24,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:24,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427135333] [2022-07-13 22:04:24,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:24,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:24,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:24,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:24,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427135333] [2022-07-13 22:04:24,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427135333] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:24,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:24,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:24,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076922539] [2022-07-13 22:04:24,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:24,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:24,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:24,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:24,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:24,262 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 278 [2022-07-13 22:04:24,263 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 307 transitions, 1092 flow. Second operand has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:24,263 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:24,263 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 278 [2022-07-13 22:04:24,263 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:25,024 INFO L129 PetriNetUnfolder]: 223/5999 cut-off events. [2022-07-13 22:04:25,024 INFO L130 PetriNetUnfolder]: For 2667/2986 co-relation queries the response was YES. [2022-07-13 22:04:25,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9679 conditions, 5999 events. 223/5999 cut-off events. For 2667/2986 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 73313 event pairs, 94 based on Foata normal form. 5/5631 useless extension candidates. Maximal degree in co-relation 9615. Up to 290 conditions per place. [2022-07-13 22:04:25,085 INFO L132 encePairwiseOnDemand]: 268/278 looper letters, 18 selfloop transitions, 6 changer transitions 5/315 dead transitions. [2022-07-13 22:04:25,085 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 315 transitions, 1160 flow [2022-07-13 22:04:25,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:25,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:25,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 790 transitions. [2022-07-13 22:04:25,088 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.947242206235012 [2022-07-13 22:04:25,088 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 790 transitions. [2022-07-13 22:04:25,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 790 transitions. [2022-07-13 22:04:25,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:25,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 790 transitions. [2022-07-13 22:04:25,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,092 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,092 INFO L186 Difference]: Start difference. First operand has 329 places, 307 transitions, 1092 flow. Second operand 3 states and 790 transitions. [2022-07-13 22:04:25,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 315 transitions, 1160 flow [2022-07-13 22:04:25,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 315 transitions, 1129 flow, removed 8 selfloop flow, removed 9 redundant places. [2022-07-13 22:04:25,136 INFO L242 Difference]: Finished difference. Result has 322 places, 306 transitions, 1084 flow [2022-07-13 22:04:25,137 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=1061, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1084, PETRI_PLACES=322, PETRI_TRANSITIONS=306} [2022-07-13 22:04:25,137 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 73 predicate places. [2022-07-13 22:04:25,137 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 306 transitions, 1084 flow [2022-07-13 22:04:25,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,138 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:25,138 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:25,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 22:04:25,138 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:25,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:25,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1011700246, now seen corresponding path program 1 times [2022-07-13 22:04:25,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:25,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705878141] [2022-07-13 22:04:25,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:25,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:25,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:25,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:25,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705878141] [2022-07-13 22:04:25,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705878141] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:25,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:25,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:25,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551444921] [2022-07-13 22:04:25,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:25,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:25,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:25,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:25,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:25,171 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 278 [2022-07-13 22:04:25,172 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 306 transitions, 1084 flow. Second operand has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:25,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 278 [2022-07-13 22:04:25,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:25,717 INFO L129 PetriNetUnfolder]: 187/4582 cut-off events. [2022-07-13 22:04:25,717 INFO L130 PetriNetUnfolder]: For 1979/2592 co-relation queries the response was YES. [2022-07-13 22:04:25,757 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7396 conditions, 4582 events. 187/4582 cut-off events. For 1979/2592 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 52334 event pairs, 60 based on Foata normal form. 48/4399 useless extension candidates. Maximal degree in co-relation 7078. Up to 270 conditions per place. [2022-07-13 22:04:25,768 INFO L132 encePairwiseOnDemand]: 270/278 looper letters, 24 selfloop transitions, 4 changer transitions 22/314 dead transitions. [2022-07-13 22:04:25,768 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 314 transitions, 1168 flow [2022-07-13 22:04:25,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:25,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:25,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 790 transitions. [2022-07-13 22:04:25,771 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.947242206235012 [2022-07-13 22:04:25,771 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 790 transitions. [2022-07-13 22:04:25,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 790 transitions. [2022-07-13 22:04:25,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:25,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 790 transitions. [2022-07-13 22:04:25,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,775 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,775 INFO L186 Difference]: Start difference. First operand has 322 places, 306 transitions, 1084 flow. Second operand 3 states and 790 transitions. [2022-07-13 22:04:25,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 314 transitions, 1168 flow [2022-07-13 22:04:25,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 314 transitions, 1152 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-07-13 22:04:25,803 INFO L242 Difference]: Finished difference. Result has 319 places, 288 transitions, 957 flow [2022-07-13 22:04:25,804 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=957, PETRI_PLACES=319, PETRI_TRANSITIONS=288} [2022-07-13 22:04:25,804 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 70 predicate places. [2022-07-13 22:04:25,804 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 288 transitions, 957 flow [2022-07-13 22:04:25,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,805 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:25,805 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:25,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 22:04:25,805 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:25,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:25,806 INFO L85 PathProgramCache]: Analyzing trace with hash -589076536, now seen corresponding path program 1 times [2022-07-13 22:04:25,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:25,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176261012] [2022-07-13 22:04:25,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:25,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:25,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:25,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:25,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176261012] [2022-07-13 22:04:25,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176261012] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:25,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:25,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:04:25,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707395262] [2022-07-13 22:04:25,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:25,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:04:25,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:25,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:04:25,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:04:25,882 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 278 [2022-07-13 22:04:25,884 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 288 transitions, 957 flow. Second operand has 9 states, 9 states have (on average 247.22222222222223) internal successors, (2225), 9 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:25,884 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:25,884 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 278 [2022-07-13 22:04:25,884 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:26,435 INFO L129 PetriNetUnfolder]: 355/3701 cut-off events. [2022-07-13 22:04:26,435 INFO L130 PetriNetUnfolder]: For 1824/2432 co-relation queries the response was YES. [2022-07-13 22:04:26,462 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6613 conditions, 3701 events. 355/3701 cut-off events. For 1824/2432 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 41345 event pairs, 104 based on Foata normal form. 16/3498 useless extension candidates. Maximal degree in co-relation 6576. Up to 423 conditions per place. [2022-07-13 22:04:26,468 INFO L132 encePairwiseOnDemand]: 265/278 looper letters, 39 selfloop transitions, 13 changer transitions 9/311 dead transitions. [2022-07-13 22:04:26,469 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 311 transitions, 1169 flow [2022-07-13 22:04:26,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:04:26,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 22:04:26,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2253 transitions. [2022-07-13 22:04:26,473 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9004796163069544 [2022-07-13 22:04:26,473 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2253 transitions. [2022-07-13 22:04:26,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2253 transitions. [2022-07-13 22:04:26,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:26,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2253 transitions. [2022-07-13 22:04:26,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 250.33333333333334) internal successors, (2253), 9 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:26,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:26,482 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:26,482 INFO L186 Difference]: Start difference. First operand has 319 places, 288 transitions, 957 flow. Second operand 9 states and 2253 transitions. [2022-07-13 22:04:26,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 311 transitions, 1169 flow [2022-07-13 22:04:26,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 311 transitions, 1127 flow, removed 17 selfloop flow, removed 6 redundant places. [2022-07-13 22:04:26,504 INFO L242 Difference]: Finished difference. Result has 315 places, 296 transitions, 1030 flow [2022-07-13 22:04:26,504 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=919, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1030, PETRI_PLACES=315, PETRI_TRANSITIONS=296} [2022-07-13 22:04:26,505 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 66 predicate places. [2022-07-13 22:04:26,505 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 296 transitions, 1030 flow [2022-07-13 22:04:26,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 247.22222222222223) internal successors, (2225), 9 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:26,506 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:26,506 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:26,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 22:04:26,506 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:26,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:26,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1255278944, now seen corresponding path program 1 times [2022-07-13 22:04:26,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:26,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106291226] [2022-07-13 22:04:26,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:26,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:26,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:26,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:26,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106291226] [2022-07-13 22:04:26,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106291226] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:26,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:26,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:04:26,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584072096] [2022-07-13 22:04:26,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:26,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:04:26,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:26,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:04:26,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:04:26,580 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 278 [2022-07-13 22:04:26,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 296 transitions, 1030 flow. Second operand has 9 states, 9 states have (on average 247.22222222222223) internal successors, (2225), 9 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:26,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:26,581 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 278 [2022-07-13 22:04:26,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:27,228 INFO L129 PetriNetUnfolder]: 509/3750 cut-off events. [2022-07-13 22:04:27,228 INFO L130 PetriNetUnfolder]: For 1051/1210 co-relation queries the response was YES. [2022-07-13 22:04:27,274 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6390 conditions, 3750 events. 509/3750 cut-off events. For 1051/1210 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 44107 event pairs, 359 based on Foata normal form. 3/3392 useless extension candidates. Maximal degree in co-relation 6350. Up to 1267 conditions per place. [2022-07-13 22:04:27,279 INFO L132 encePairwiseOnDemand]: 266/278 looper letters, 31 selfloop transitions, 9 changer transitions 17/326 dead transitions. [2022-07-13 22:04:27,279 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 326 transitions, 1221 flow [2022-07-13 22:04:27,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 22:04:27,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-13 22:04:27,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3239 transitions. [2022-07-13 22:04:27,283 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8962368566685114 [2022-07-13 22:04:27,284 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3239 transitions. [2022-07-13 22:04:27,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3239 transitions. [2022-07-13 22:04:27,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:27,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3239 transitions. [2022-07-13 22:04:27,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 249.15384615384616) internal successors, (3239), 13 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 278.0) internal successors, (3892), 14 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,295 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 278.0) internal successors, (3892), 14 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,296 INFO L186 Difference]: Start difference. First operand has 315 places, 296 transitions, 1030 flow. Second operand 13 states and 3239 transitions. [2022-07-13 22:04:27,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 326 transitions, 1221 flow [2022-07-13 22:04:27,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 326 transitions, 1188 flow, removed 14 selfloop flow, removed 3 redundant places. [2022-07-13 22:04:27,311 INFO L242 Difference]: Finished difference. Result has 333 places, 300 transitions, 1053 flow [2022-07-13 22:04:27,311 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1053, PETRI_PLACES=333, PETRI_TRANSITIONS=300} [2022-07-13 22:04:27,312 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 84 predicate places. [2022-07-13 22:04:27,312 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 300 transitions, 1053 flow [2022-07-13 22:04:27,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 247.22222222222223) internal successors, (2225), 9 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,313 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:27,313 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:27,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 22:04:27,314 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:27,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:27,314 INFO L85 PathProgramCache]: Analyzing trace with hash -87991940, now seen corresponding path program 1 times [2022-07-13 22:04:27,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:27,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179859364] [2022-07-13 22:04:27,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:27,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:27,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:27,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:27,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179859364] [2022-07-13 22:04:27,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179859364] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:27,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:27,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:04:27,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266063710] [2022-07-13 22:04:27,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:27,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:04:27,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:27,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:04:27,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:04:27,412 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 278 [2022-07-13 22:04:27,413 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 300 transitions, 1053 flow. Second operand has 10 states, 10 states have (on average 243.4) internal successors, (2434), 10 states have internal predecessors, (2434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:27,413 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:27,414 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 278 [2022-07-13 22:04:27,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:28,366 INFO L129 PetriNetUnfolder]: 1085/7210 cut-off events. [2022-07-13 22:04:28,366 INFO L130 PetriNetUnfolder]: For 8429/9160 co-relation queries the response was YES. [2022-07-13 22:04:28,419 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15315 conditions, 7210 events. 1085/7210 cut-off events. For 8429/9160 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 88983 event pairs, 758 based on Foata normal form. 154/6774 useless extension candidates. Maximal degree in co-relation 15266. Up to 1515 conditions per place. [2022-07-13 22:04:28,428 INFO L132 encePairwiseOnDemand]: 264/278 looper letters, 56 selfloop transitions, 11 changer transitions 32/368 dead transitions. [2022-07-13 22:04:28,428 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 368 transitions, 1670 flow [2022-07-13 22:04:28,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 22:04:28,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-13 22:04:28,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3451 transitions. [2022-07-13 22:04:28,432 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8866906474820144 [2022-07-13 22:04:28,432 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3451 transitions. [2022-07-13 22:04:28,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3451 transitions. [2022-07-13 22:04:28,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:28,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3451 transitions. [2022-07-13 22:04:28,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 246.5) internal successors, (3451), 14 states have internal predecessors, (3451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:28,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 278.0) internal successors, (4170), 15 states have internal predecessors, (4170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:28,445 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 278.0) internal successors, (4170), 15 states have internal predecessors, (4170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:28,445 INFO L186 Difference]: Start difference. First operand has 333 places, 300 transitions, 1053 flow. Second operand 14 states and 3451 transitions. [2022-07-13 22:04:28,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 368 transitions, 1670 flow [2022-07-13 22:04:28,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 368 transitions, 1659 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-07-13 22:04:28,500 INFO L242 Difference]: Finished difference. Result has 347 places, 308 transitions, 1123 flow [2022-07-13 22:04:28,501 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1123, PETRI_PLACES=347, PETRI_TRANSITIONS=308} [2022-07-13 22:04:28,501 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 98 predicate places. [2022-07-13 22:04:28,501 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 308 transitions, 1123 flow [2022-07-13 22:04:28,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 243.4) internal successors, (2434), 10 states have internal predecessors, (2434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:28,502 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:28,502 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:28,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 22:04:28,503 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:28,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:28,503 INFO L85 PathProgramCache]: Analyzing trace with hash 489008084, now seen corresponding path program 1 times [2022-07-13 22:04:28,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:28,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725303882] [2022-07-13 22:04:28,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:28,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:29,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:29,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:29,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725303882] [2022-07-13 22:04:29,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725303882] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:29,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:29,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-07-13 22:04:29,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963425027] [2022-07-13 22:04:29,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:29,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-13 22:04:29,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:29,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-13 22:04:29,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2022-07-13 22:04:29,097 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 278 [2022-07-13 22:04:29,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 308 transitions, 1123 flow. Second operand has 34 states, 34 states have (on average 180.3235294117647) internal successors, (6131), 34 states have internal predecessors, (6131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:29,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:29,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 278 [2022-07-13 22:04:29,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:23,532 INFO L129 PetriNetUnfolder]: 68419/144617 cut-off events. [2022-07-13 22:05:23,533 INFO L130 PetriNetUnfolder]: For 151166/152332 co-relation queries the response was YES. [2022-07-13 22:05:26,364 INFO L84 FinitePrefix]: Finished finitePrefix Result has 369093 conditions, 144617 events. 68419/144617 cut-off events. For 151166/152332 co-relation queries the response was YES. Maximal size of possible extension queue 2465. Compared 1663257 event pairs, 31066 based on Foata normal form. 661/141309 useless extension candidates. Maximal degree in co-relation 369036. Up to 53274 conditions per place. [2022-07-13 22:05:26,793 INFO L132 encePairwiseOnDemand]: 230/278 looper letters, 1426 selfloop transitions, 293 changer transitions 827/2729 dead transitions. [2022-07-13 22:05:26,793 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 713 places, 2729 transitions, 16034 flow [2022-07-13 22:05:26,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 369 states. [2022-07-13 22:05:26,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2022-07-13 22:05:26,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 68121 transitions. [2022-07-13 22:05:26,863 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6640638708545359 [2022-07-13 22:05:26,864 INFO L72 ComplementDD]: Start complementDD. Operand 369 states and 68121 transitions. [2022-07-13 22:05:26,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 369 states and 68121 transitions. [2022-07-13 22:05:26,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:26,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 369 states and 68121 transitions. [2022-07-13 22:05:26,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 370 states, 369 states have (on average 184.609756097561) internal successors, (68121), 369 states have internal predecessors, (68121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:27,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 370 states, 370 states have (on average 278.0) internal successors, (102860), 370 states have internal predecessors, (102860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:27,125 INFO L81 ComplementDD]: Finished complementDD. Result has 370 states, 370 states have (on average 278.0) internal successors, (102860), 370 states have internal predecessors, (102860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:27,125 INFO L186 Difference]: Start difference. First operand has 347 places, 308 transitions, 1123 flow. Second operand 369 states and 68121 transitions. [2022-07-13 22:05:27,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 713 places, 2729 transitions, 16034 flow [2022-07-13 22:05:30,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 709 places, 2729 transitions, 16023 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-07-13 22:05:30,586 INFO L242 Difference]: Finished difference. Result has 1066 places, 625 transitions, 4862 flow [2022-07-13 22:05:30,587 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=369, PETRI_FLOW=4862, PETRI_PLACES=1066, PETRI_TRANSITIONS=625} [2022-07-13 22:05:30,588 INFO L279 CegarLoopForPetriNet]: 249 programPoint places, 817 predicate places. [2022-07-13 22:05:30,588 INFO L495 AbstractCegarLoop]: Abstraction has has 1066 places, 625 transitions, 4862 flow [2022-07-13 22:05:30,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 180.3235294117647) internal successors, (6131), 34 states have internal predecessors, (6131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:30,589 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:30,589 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:30,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 22:05:30,590 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:30,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:30,590 INFO L85 PathProgramCache]: Analyzing trace with hash 2031754960, now seen corresponding path program 2 times [2022-07-13 22:05:30,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:30,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179999514] [2022-07-13 22:05:30,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:30,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:31,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:31,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:31,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179999514] [2022-07-13 22:05:31,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179999514] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:31,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:31,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-07-13 22:05:31,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108253063] [2022-07-13 22:05:31,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:31,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-13 22:05:31,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:31,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-13 22:05:31,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2022-07-13 22:05:31,195 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 278 [2022-07-13 22:05:31,198 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1066 places, 625 transitions, 4862 flow. Second operand has 34 states, 34 states have (on average 180.3235294117647) internal successors, (6131), 34 states have internal predecessors, (6131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:31,198 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:31,198 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 278 [2022-07-13 22:05:31,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand