./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-file-item-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 846c6ea342419c7ea85c72de8af40f1cf8af72c22131b8a3f2ebdacec113c699 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 13:41:31,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 13:41:31,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 13:41:31,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 13:41:31,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 13:41:31,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 13:41:31,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 13:41:31,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 13:41:31,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 13:41:31,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 13:41:31,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 13:41:31,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 13:41:31,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 13:41:31,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 13:41:31,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 13:41:31,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 13:41:31,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 13:41:31,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 13:41:31,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 13:41:31,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 13:41:31,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 13:41:31,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 13:41:31,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 13:41:31,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 13:41:31,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 13:41:31,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 13:41:31,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 13:41:31,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 13:41:31,944 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 13:41:31,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 13:41:31,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 13:41:31,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 13:41:31,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 13:41:31,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 13:41:31,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 13:41:31,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 13:41:31,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 13:41:31,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 13:41:31,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 13:41:31,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 13:41:31,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 13:41:31,952 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 13:41:31,978 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 13:41:31,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 13:41:31,979 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 13:41:31,979 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 13:41:31,980 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 13:41:31,980 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 13:41:31,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 13:41:31,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 13:41:31,980 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 13:41:31,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 13:41:31,981 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 13:41:31,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 13:41:31,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 13:41:31,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 13:41:31,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 13:41:31,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 13:41:31,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 13:41:31,982 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 13:41:31,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 13:41:31,983 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 13:41:31,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 13:41:31,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 13:41:31,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 13:41:31,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 13:41:31,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:41:31,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 13:41:31,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 13:41:31,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 13:41:31,985 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 13:41:31,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 13:41:31,985 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 13:41:31,985 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 13:41:31,986 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 13:41:31,986 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 13:41:31,986 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 846c6ea342419c7ea85c72de8af40f1cf8af72c22131b8a3f2ebdacec113c699 [2021-12-22 13:41:32,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 13:41:32,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 13:41:32,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 13:41:32,201 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 13:41:32,202 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 13:41:32,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-file-item-symm.wvr.c [2021-12-22 13:41:32,247 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e200814aa/f0f43ae9270d49d6a57e162529a04c87/FLAGaf3aca25a [2021-12-22 13:41:32,652 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 13:41:32,655 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-symm.wvr.c [2021-12-22 13:41:32,668 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e200814aa/f0f43ae9270d49d6a57e162529a04c87/FLAGaf3aca25a [2021-12-22 13:41:33,064 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e200814aa/f0f43ae9270d49d6a57e162529a04c87 [2021-12-22 13:41:33,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 13:41:33,066 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 13:41:33,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 13:41:33,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 13:41:33,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 13:41:33,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:41:33" (1/1) ... [2021-12-22 13:41:33,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25f1d114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:41:33, skipping insertion in model container [2021-12-22 13:41:33,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:41:33" (1/1) ... [2021-12-22 13:41:33,084 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 13:41:33,093 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 13:41:33,242 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-symm.wvr.c[2495,2508] [2021-12-22 13:41:33,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:41:33,256 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 13:41:33,285 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-symm.wvr.c[2495,2508] [2021-12-22 13:41:33,288 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:41:33,299 INFO L208 MainTranslator]: Completed translation [2021-12-22 13:41:33,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:41:33 WrapperNode [2021-12-22 13:41:33,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 13:41:33,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 13:41:33,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 13:41:33,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 13:41:33,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:41:33" (1/1) ... [2021-12-22 13:41:33,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:41:33" (1/1) ... [2021-12-22 13:41:33,339 INFO L137 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 158 [2021-12-22 13:41:33,340 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 13:41:33,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 13:41:33,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 13:41:33,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 13:41:33,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:41:33" (1/1) ... [2021-12-22 13:41:33,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:41:33" (1/1) ... [2021-12-22 13:41:33,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:41:33" (1/1) ... [2021-12-22 13:41:33,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:41:33" (1/1) ... [2021-12-22 13:41:33,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:41:33" (1/1) ... [2021-12-22 13:41:33,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:41:33" (1/1) ... [2021-12-22 13:41:33,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:41:33" (1/1) ... [2021-12-22 13:41:33,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 13:41:33,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 13:41:33,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 13:41:33,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 13:41:33,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:41:33" (1/1) ... [2021-12-22 13:41:33,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:41:33,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:41:33,399 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) [2021-12-22 13:41:33,426 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 [2021-12-22 13:41:33,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 13:41:33,440 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-22 13:41:33,440 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-22 13:41:33,440 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-22 13:41:33,440 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-22 13:41:33,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 13:41:33,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 13:41:33,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 13:41:33,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 13:41:33,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 13:41:33,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 13:41:33,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 13:41:33,442 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-22 13:41:33,513 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 13:41:33,514 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 13:41:33,806 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 13:41:33,812 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 13:41:33,814 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 13:41:33,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:41:33 BoogieIcfgContainer [2021-12-22 13:41:33,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 13:41:33,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 13:41:33,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 13:41:33,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 13:41:33,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:41:33" (1/3) ... [2021-12-22 13:41:33,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e44ce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:41:33, skipping insertion in model container [2021-12-22 13:41:33,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:41:33" (2/3) ... [2021-12-22 13:41:33,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e44ce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:41:33, skipping insertion in model container [2021-12-22 13:41:33,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:41:33" (3/3) ... [2021-12-22 13:41:33,823 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-file-item-symm.wvr.c [2021-12-22 13:41:33,828 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-22 13:41:33,828 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 13:41:33,829 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 13:41:33,829 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-22 13:41:33,881 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,882 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,882 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,882 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,882 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,882 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,883 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,883 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,883 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,883 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,883 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,883 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,883 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,884 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,885 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,885 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,885 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,885 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,886 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,886 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,886 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,886 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,887 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,887 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,887 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,887 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,888 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,888 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,888 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,888 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,889 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,889 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,889 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,889 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,889 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,889 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,890 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,890 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,890 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,890 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,890 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,890 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,890 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,891 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,891 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,891 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,891 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,891 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,891 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,892 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,892 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,892 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,892 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,892 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,892 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,893 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,893 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,893 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,893 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,893 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,894 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,894 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,894 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,894 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,895 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,895 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,895 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,895 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,895 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,896 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,897 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,897 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,897 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,897 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,898 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,898 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,898 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,898 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,898 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,899 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,899 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,899 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,900 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,901 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,902 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,902 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,903 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,904 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,904 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,904 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,904 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,904 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,909 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,909 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,909 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,909 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,910 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,910 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,910 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,910 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,911 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,911 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,911 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,911 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,911 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,912 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,912 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,912 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,912 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,912 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,912 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,912 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,913 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,913 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,914 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,914 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,914 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,914 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,917 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,917 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,917 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,917 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,917 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,918 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,918 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,918 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,918 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,918 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,920 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,920 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,920 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,920 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,920 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,920 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,920 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,921 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,921 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,921 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,921 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,921 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,921 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,921 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,922 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,922 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,922 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,922 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,922 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,923 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,923 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,923 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,923 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,923 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,923 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,923 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,924 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,924 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,924 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,924 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,924 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,924 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,924 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,925 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,925 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,925 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,925 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,925 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,925 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,925 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,925 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,926 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,926 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,926 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,926 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,926 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,926 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,926 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,927 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,927 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,927 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,927 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,927 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,927 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,927 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,928 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,928 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,928 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,929 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,929 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,929 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,929 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,929 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,929 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,930 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,930 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,930 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,930 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,930 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,930 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,930 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,930 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,931 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,931 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,931 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,933 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,933 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,934 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,936 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,936 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,936 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,936 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,936 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,937 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,937 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,937 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,937 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,938 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,938 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,938 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,938 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,939 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,939 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,939 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,940 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,940 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,940 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,940 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,941 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,941 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,941 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,941 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,941 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,943 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,947 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,947 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,947 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,948 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,948 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,948 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,948 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,948 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,948 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,949 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,949 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,949 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,949 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,949 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,949 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,949 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,951 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,951 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,951 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,952 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,952 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,952 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,952 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,952 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,953 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,953 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,953 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,953 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,953 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,953 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,953 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,953 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:41:33,957 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-12-22 13:41:33,986 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 13:41:33,990 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 13:41:33,991 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-22 13:41:33,998 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 198 places, 210 transitions, 436 flow [2021-12-22 13:41:34,051 INFO L129 PetriNetUnfolder]: 19/208 cut-off events. [2021-12-22 13:41:34,052 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-22 13:41:34,060 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 208 events. 19/208 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 414 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 131. Up to 2 conditions per place. [2021-12-22 13:41:34,060 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 210 transitions, 436 flow [2021-12-22 13:41:34,064 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 199 transitions, 410 flow [2021-12-22 13:41:34,101 INFO L129 PetriNetUnfolder]: 19/198 cut-off events. [2021-12-22 13:41:34,101 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-22 13:41:34,101 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:34,102 INFO L254 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] [2021-12-22 13:41:34,102 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:34,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:34,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1054999512, now seen corresponding path program 1 times [2021-12-22 13:41:34,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:34,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171904609] [2021-12-22 13:41:34,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:34,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:34,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:34,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:34,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171904609] [2021-12-22 13:41:34,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171904609] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:34,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:34,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:34,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221078861] [2021-12-22 13:41:34,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:34,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:34,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:34,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:34,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:34,412 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:34,416 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 199 transitions, 410 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:34,416 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:34,416 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:34,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:34,826 INFO L129 PetriNetUnfolder]: 113/576 cut-off events. [2021-12-22 13:41:34,826 INFO L130 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2021-12-22 13:41:34,828 INFO L84 FinitePrefix]: Finished finitePrefix Result has 861 conditions, 576 events. 113/576 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2995 event pairs, 35 based on Foata normal form. 23/565 useless extension candidates. Maximal degree in co-relation 655. Up to 123 conditions per place. [2021-12-22 13:41:34,831 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 81 selfloop transitions, 5 changer transitions 44/287 dead transitions. [2021-12-22 13:41:34,831 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 287 transitions, 876 flow [2021-12-22 13:41:34,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-22 13:41:34,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-12-22 13:41:34,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 4328 transitions. [2021-12-22 13:41:34,848 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8243809523809524 [2021-12-22 13:41:34,849 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 4328 transitions. [2021-12-22 13:41:34,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 4328 transitions. [2021-12-22 13:41:34,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:34,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 4328 transitions. [2021-12-22 13:41:34,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 173.12) internal successors, (4328), 25 states have internal predecessors, (4328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:34,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 210.0) internal successors, (5460), 26 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:34,875 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 210.0) internal successors, (5460), 26 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:34,877 INFO L186 Difference]: Start difference. First operand has 187 places, 199 transitions, 410 flow. Second operand 25 states and 4328 transitions. [2021-12-22 13:41:34,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 287 transitions, 876 flow [2021-12-22 13:41:34,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 287 transitions, 848 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-22 13:41:34,884 INFO L242 Difference]: Finished difference. Result has 229 places, 193 transitions, 473 flow [2021-12-22 13:41:34,885 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=473, PETRI_PLACES=229, PETRI_TRANSITIONS=193} [2021-12-22 13:41:34,888 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 42 predicate places. [2021-12-22 13:41:34,888 INFO L470 AbstractCegarLoop]: Abstraction has has 229 places, 193 transitions, 473 flow [2021-12-22 13:41:34,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:34,889 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:34,889 INFO L254 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] [2021-12-22 13:41:34,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 13:41:34,889 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:34,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:34,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1250873480, now seen corresponding path program 1 times [2021-12-22 13:41:34,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:34,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049461694] [2021-12-22 13:41:34,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:34,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:34,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:34,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:34,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049461694] [2021-12-22 13:41:34,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049461694] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:34,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:34,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:41:34,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432418608] [2021-12-22 13:41:34,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:34,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:41:34,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:34,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:41:34,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:41:34,932 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2021-12-22 13:41:34,932 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 193 transitions, 473 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:34,932 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:34,932 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2021-12-22 13:41:34,933 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:35,022 INFO L129 PetriNetUnfolder]: 67/631 cut-off events. [2021-12-22 13:41:35,022 INFO L130 PetriNetUnfolder]: For 623/632 co-relation queries the response was YES. [2021-12-22 13:41:35,026 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1081 conditions, 631 events. 67/631 cut-off events. For 623/632 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3791 event pairs, 20 based on Foata normal form. 0/575 useless extension candidates. Maximal degree in co-relation 1026. Up to 32 conditions per place. [2021-12-22 13:41:35,028 INFO L132 encePairwiseOnDemand]: 204/210 looper letters, 15 selfloop transitions, 3 changer transitions 0/199 dead transitions. [2021-12-22 13:41:35,028 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 199 transitions, 524 flow [2021-12-22 13:41:35,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:41:35,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-22 13:41:35,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2021-12-22 13:41:35,030 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2021-12-22 13:41:35,030 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2021-12-22 13:41:35,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2021-12-22 13:41:35,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:35,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2021-12-22 13:41:35,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:35,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:35,033 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:35,033 INFO L186 Difference]: Start difference. First operand has 229 places, 193 transitions, 473 flow. Second operand 3 states and 591 transitions. [2021-12-22 13:41:35,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 199 transitions, 524 flow [2021-12-22 13:41:35,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 199 transitions, 505 flow, removed 9 selfloop flow, removed 10 redundant places. [2021-12-22 13:41:35,040 INFO L242 Difference]: Finished difference. Result has 202 places, 196 transitions, 484 flow [2021-12-22 13:41:35,041 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=484, PETRI_PLACES=202, PETRI_TRANSITIONS=196} [2021-12-22 13:41:35,041 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 15 predicate places. [2021-12-22 13:41:35,042 INFO L470 AbstractCegarLoop]: Abstraction has has 202 places, 196 transitions, 484 flow [2021-12-22 13:41:35,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:35,042 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:35,042 INFO L254 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] [2021-12-22 13:41:35,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 13:41:35,043 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:35,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:35,043 INFO L85 PathProgramCache]: Analyzing trace with hash 728210236, now seen corresponding path program 2 times [2021-12-22 13:41:35,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:35,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171141184] [2021-12-22 13:41:35,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:35,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:35,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:35,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:35,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171141184] [2021-12-22 13:41:35,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171141184] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:35,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:35,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:41:35,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952138755] [2021-12-22 13:41:35,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:35,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:41:35,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:35,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:41:35,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:41:35,102 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2021-12-22 13:41:35,103 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 196 transitions, 484 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:35,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:35,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2021-12-22 13:41:35,104 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:35,171 INFO L129 PetriNetUnfolder]: 53/565 cut-off events. [2021-12-22 13:41:35,172 INFO L130 PetriNetUnfolder]: For 363/386 co-relation queries the response was YES. [2021-12-22 13:41:35,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 892 conditions, 565 events. 53/565 cut-off events. For 363/386 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2971 event pairs, 24 based on Foata normal form. 8/533 useless extension candidates. Maximal degree in co-relation 798. Up to 23 conditions per place. [2021-12-22 13:41:35,176 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 16 selfloop transitions, 5 changer transitions 0/202 dead transitions. [2021-12-22 13:41:35,176 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 202 transitions, 547 flow [2021-12-22 13:41:35,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:41:35,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-22 13:41:35,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2021-12-22 13:41:35,178 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2021-12-22 13:41:35,178 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2021-12-22 13:41:35,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2021-12-22 13:41:35,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:35,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2021-12-22 13:41:35,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:35,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:35,181 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:35,181 INFO L186 Difference]: Start difference. First operand has 202 places, 196 transitions, 484 flow. Second operand 3 states and 591 transitions. [2021-12-22 13:41:35,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 202 transitions, 547 flow [2021-12-22 13:41:35,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 202 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-22 13:41:35,187 INFO L242 Difference]: Finished difference. Result has 205 places, 199 transitions, 525 flow [2021-12-22 13:41:35,188 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=525, PETRI_PLACES=205, PETRI_TRANSITIONS=199} [2021-12-22 13:41:35,189 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 18 predicate places. [2021-12-22 13:41:35,189 INFO L470 AbstractCegarLoop]: Abstraction has has 205 places, 199 transitions, 525 flow [2021-12-22 13:41:35,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:35,190 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:35,190 INFO L254 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] [2021-12-22 13:41:35,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 13:41:35,190 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:35,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:35,192 INFO L85 PathProgramCache]: Analyzing trace with hash 22916530, now seen corresponding path program 1 times [2021-12-22 13:41:35,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:35,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197037472] [2021-12-22 13:41:35,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:35,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:35,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:35,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:35,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197037472] [2021-12-22 13:41:35,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197037472] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:35,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:35,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:35,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433137988] [2021-12-22 13:41:35,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:35,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:35,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:35,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:35,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:35,346 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:35,347 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 199 transitions, 525 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:35,347 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:35,347 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:35,347 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:35,651 INFO L129 PetriNetUnfolder]: 190/1098 cut-off events. [2021-12-22 13:41:35,652 INFO L130 PetriNetUnfolder]: For 873/892 co-relation queries the response was YES. [2021-12-22 13:41:35,654 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2166 conditions, 1098 events. 190/1098 cut-off events. For 873/892 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7984 event pairs, 101 based on Foata normal form. 6/1041 useless extension candidates. Maximal degree in co-relation 2021. Up to 271 conditions per place. [2021-12-22 13:41:35,657 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 80 selfloop transitions, 5 changer transitions 34/283 dead transitions. [2021-12-22 13:41:35,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 283 transitions, 1078 flow [2021-12-22 13:41:35,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-22 13:41:35,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-22 13:41:35,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4125 transitions. [2021-12-22 13:41:35,664 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8184523809523809 [2021-12-22 13:41:35,664 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4125 transitions. [2021-12-22 13:41:35,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4125 transitions. [2021-12-22 13:41:35,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:35,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4125 transitions. [2021-12-22 13:41:35,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 171.875) internal successors, (4125), 24 states have internal predecessors, (4125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:35,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:35,677 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:35,677 INFO L186 Difference]: Start difference. First operand has 205 places, 199 transitions, 525 flow. Second operand 24 states and 4125 transitions. [2021-12-22 13:41:35,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 283 transitions, 1078 flow [2021-12-22 13:41:35,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 283 transitions, 1062 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-12-22 13:41:35,684 INFO L242 Difference]: Finished difference. Result has 248 places, 203 transitions, 608 flow [2021-12-22 13:41:35,685 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=608, PETRI_PLACES=248, PETRI_TRANSITIONS=203} [2021-12-22 13:41:35,685 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 61 predicate places. [2021-12-22 13:41:35,685 INFO L470 AbstractCegarLoop]: Abstraction has has 248 places, 203 transitions, 608 flow [2021-12-22 13:41:35,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:35,686 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:35,686 INFO L254 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] [2021-12-22 13:41:35,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 13:41:35,687 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:35,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:35,687 INFO L85 PathProgramCache]: Analyzing trace with hash 356652588, now seen corresponding path program 2 times [2021-12-22 13:41:35,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:35,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124070190] [2021-12-22 13:41:35,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:35,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:35,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:35,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:35,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124070190] [2021-12-22 13:41:35,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124070190] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:35,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:35,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:35,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650425497] [2021-12-22 13:41:35,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:35,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:35,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:35,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:35,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:35,803 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:35,804 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 203 transitions, 608 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:35,804 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:35,804 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:35,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:36,118 INFO L129 PetriNetUnfolder]: 197/1065 cut-off events. [2021-12-22 13:41:36,118 INFO L130 PetriNetUnfolder]: For 3326/3336 co-relation queries the response was YES. [2021-12-22 13:41:36,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3070 conditions, 1065 events. 197/1065 cut-off events. For 3326/3336 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7573 event pairs, 112 based on Foata normal form. 5/1005 useless extension candidates. Maximal degree in co-relation 2930. Up to 314 conditions per place. [2021-12-22 13:41:36,128 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 55 selfloop transitions, 12 changer transitions 25/256 dead transitions. [2021-12-22 13:41:36,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 256 transitions, 1253 flow [2021-12-22 13:41:36,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-22 13:41:36,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-22 13:41:36,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3430 transitions. [2021-12-22 13:41:36,134 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2021-12-22 13:41:36,134 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3430 transitions. [2021-12-22 13:41:36,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3430 transitions. [2021-12-22 13:41:36,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:36,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3430 transitions. [2021-12-22 13:41:36,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.5) internal successors, (3430), 20 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:36,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:36,149 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:36,149 INFO L186 Difference]: Start difference. First operand has 248 places, 203 transitions, 608 flow. Second operand 20 states and 3430 transitions. [2021-12-22 13:41:36,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 256 transitions, 1253 flow [2021-12-22 13:41:36,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 256 transitions, 1182 flow, removed 35 selfloop flow, removed 11 redundant places. [2021-12-22 13:41:36,162 INFO L242 Difference]: Finished difference. Result has 256 places, 213 transitions, 744 flow [2021-12-22 13:41:36,162 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=744, PETRI_PLACES=256, PETRI_TRANSITIONS=213} [2021-12-22 13:41:36,163 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 69 predicate places. [2021-12-22 13:41:36,163 INFO L470 AbstractCegarLoop]: Abstraction has has 256 places, 213 transitions, 744 flow [2021-12-22 13:41:36,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:36,164 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:36,164 INFO L254 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] [2021-12-22 13:41:36,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 13:41:36,165 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:36,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:36,165 INFO L85 PathProgramCache]: Analyzing trace with hash -33887738, now seen corresponding path program 1 times [2021-12-22 13:41:36,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:36,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308483479] [2021-12-22 13:41:36,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:36,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:36,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:36,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:36,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308483479] [2021-12-22 13:41:36,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308483479] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:36,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:36,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:36,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042420717] [2021-12-22 13:41:36,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:36,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:36,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:36,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:36,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:36,255 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:36,256 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 213 transitions, 744 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:36,256 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:36,256 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:36,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:36,583 INFO L129 PetriNetUnfolder]: 293/1475 cut-off events. [2021-12-22 13:41:36,583 INFO L130 PetriNetUnfolder]: For 6248/6270 co-relation queries the response was YES. [2021-12-22 13:41:36,593 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4659 conditions, 1475 events. 293/1475 cut-off events. For 6248/6270 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 11375 event pairs, 159 based on Foata normal form. 10/1401 useless extension candidates. Maximal degree in co-relation 4491. Up to 428 conditions per place. [2021-12-22 13:41:36,598 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 68 selfloop transitions, 13 changer transitions 36/287 dead transitions. [2021-12-22 13:41:36,599 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 287 transitions, 1685 flow [2021-12-22 13:41:36,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-22 13:41:36,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-22 13:41:36,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3612 transitions. [2021-12-22 13:41:36,635 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.819047619047619 [2021-12-22 13:41:36,635 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3612 transitions. [2021-12-22 13:41:36,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3612 transitions. [2021-12-22 13:41:36,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:36,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3612 transitions. [2021-12-22 13:41:36,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 172.0) internal successors, (3612), 21 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:36,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:36,655 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:36,656 INFO L186 Difference]: Start difference. First operand has 256 places, 213 transitions, 744 flow. Second operand 21 states and 3612 transitions. [2021-12-22 13:41:36,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 287 transitions, 1685 flow [2021-12-22 13:41:36,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 287 transitions, 1556 flow, removed 61 selfloop flow, removed 10 redundant places. [2021-12-22 13:41:36,681 INFO L242 Difference]: Finished difference. Result has 270 places, 226 transitions, 905 flow [2021-12-22 13:41:36,682 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=905, PETRI_PLACES=270, PETRI_TRANSITIONS=226} [2021-12-22 13:41:36,682 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 83 predicate places. [2021-12-22 13:41:36,683 INFO L470 AbstractCegarLoop]: Abstraction has has 270 places, 226 transitions, 905 flow [2021-12-22 13:41:36,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:36,684 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:36,684 INFO L254 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] [2021-12-22 13:41:36,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 13:41:36,684 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:36,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:36,685 INFO L85 PathProgramCache]: Analyzing trace with hash 395916068, now seen corresponding path program 2 times [2021-12-22 13:41:36,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:36,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469962011] [2021-12-22 13:41:36,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:36,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:36,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:36,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:36,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469962011] [2021-12-22 13:41:36,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469962011] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:36,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:36,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:36,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651564021] [2021-12-22 13:41:36,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:36,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:36,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:36,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:36,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:36,776 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:36,778 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 226 transitions, 905 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:36,778 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:36,778 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:36,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:37,107 INFO L129 PetriNetUnfolder]: 281/1413 cut-off events. [2021-12-22 13:41:37,108 INFO L130 PetriNetUnfolder]: For 8049/8079 co-relation queries the response was YES. [2021-12-22 13:41:37,116 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4996 conditions, 1413 events. 281/1413 cut-off events. For 8049/8079 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 10820 event pairs, 94 based on Foata normal form. 15/1364 useless extension candidates. Maximal degree in co-relation 4917. Up to 293 conditions per place. [2021-12-22 13:41:37,121 INFO L132 encePairwiseOnDemand]: 195/210 looper letters, 82 selfloop transitions, 25 changer transitions 50/327 dead transitions. [2021-12-22 13:41:37,121 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 327 transitions, 2063 flow [2021-12-22 13:41:37,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-22 13:41:37,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-22 13:41:37,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2794 transitions. [2021-12-22 13:41:37,125 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8315476190476191 [2021-12-22 13:41:37,125 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2794 transitions. [2021-12-22 13:41:37,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2794 transitions. [2021-12-22 13:41:37,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:37,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2794 transitions. [2021-12-22 13:41:37,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 174.625) internal successors, (2794), 16 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:37,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:37,133 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:37,133 INFO L186 Difference]: Start difference. First operand has 270 places, 226 transitions, 905 flow. Second operand 16 states and 2794 transitions. [2021-12-22 13:41:37,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 327 transitions, 2063 flow [2021-12-22 13:41:37,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 327 transitions, 1815 flow, removed 124 selfloop flow, removed 11 redundant places. [2021-12-22 13:41:37,157 INFO L242 Difference]: Finished difference. Result has 272 places, 236 transitions, 1049 flow [2021-12-22 13:41:37,157 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1049, PETRI_PLACES=272, PETRI_TRANSITIONS=236} [2021-12-22 13:41:37,158 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 85 predicate places. [2021-12-22 13:41:37,158 INFO L470 AbstractCegarLoop]: Abstraction has has 272 places, 236 transitions, 1049 flow [2021-12-22 13:41:37,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:37,159 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:37,159 INFO L254 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] [2021-12-22 13:41:37,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 13:41:37,159 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:37,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:37,160 INFO L85 PathProgramCache]: Analyzing trace with hash 2081702646, now seen corresponding path program 1 times [2021-12-22 13:41:37,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:37,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258255574] [2021-12-22 13:41:37,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:37,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:37,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:37,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:37,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258255574] [2021-12-22 13:41:37,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258255574] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:37,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:37,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:41:37,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468429761] [2021-12-22 13:41:37,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:37,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:41:37,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:37,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:41:37,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:41:37,181 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2021-12-22 13:41:37,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 236 transitions, 1049 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:37,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:37,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2021-12-22 13:41:37,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:37,328 INFO L129 PetriNetUnfolder]: 155/1472 cut-off events. [2021-12-22 13:41:37,328 INFO L130 PetriNetUnfolder]: For 5249/5285 co-relation queries the response was YES. [2021-12-22 13:41:37,337 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3840 conditions, 1472 events. 155/1472 cut-off events. For 5249/5285 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 12102 event pairs, 74 based on Foata normal form. 19/1399 useless extension candidates. Maximal degree in co-relation 3761. Up to 78 conditions per place. [2021-12-22 13:41:37,341 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 13 selfloop transitions, 5 changer transitions 0/242 dead transitions. [2021-12-22 13:41:37,341 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 242 transitions, 1100 flow [2021-12-22 13:41:37,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:41:37,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-22 13:41:37,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2021-12-22 13:41:37,342 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2021-12-22 13:41:37,343 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2021-12-22 13:41:37,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2021-12-22 13:41:37,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:37,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2021-12-22 13:41:37,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:37,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:37,345 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:37,345 INFO L186 Difference]: Start difference. First operand has 272 places, 236 transitions, 1049 flow. Second operand 3 states and 591 transitions. [2021-12-22 13:41:37,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 242 transitions, 1100 flow [2021-12-22 13:41:37,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 242 transitions, 972 flow, removed 64 selfloop flow, removed 9 redundant places. [2021-12-22 13:41:37,364 INFO L242 Difference]: Finished difference. Result has 256 places, 239 transitions, 959 flow [2021-12-22 13:41:37,364 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=959, PETRI_PLACES=256, PETRI_TRANSITIONS=239} [2021-12-22 13:41:37,365 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 69 predicate places. [2021-12-22 13:41:37,365 INFO L470 AbstractCegarLoop]: Abstraction has has 256 places, 239 transitions, 959 flow [2021-12-22 13:41:37,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:37,365 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:37,366 INFO L254 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] [2021-12-22 13:41:37,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 13:41:37,366 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:37,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:37,366 INFO L85 PathProgramCache]: Analyzing trace with hash -281237278, now seen corresponding path program 2 times [2021-12-22 13:41:37,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:37,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58884339] [2021-12-22 13:41:37,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:37,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:37,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:37,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:37,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58884339] [2021-12-22 13:41:37,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58884339] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:37,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:37,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:41:37,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813882621] [2021-12-22 13:41:37,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:37,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:41:37,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:37,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:41:37,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:41:37,389 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2021-12-22 13:41:37,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 239 transitions, 959 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:37,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:37,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2021-12-22 13:41:37,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:37,484 INFO L129 PetriNetUnfolder]: 90/1008 cut-off events. [2021-12-22 13:41:37,485 INFO L130 PetriNetUnfolder]: For 2439/2461 co-relation queries the response was YES. [2021-12-22 13:41:37,490 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2403 conditions, 1008 events. 90/1008 cut-off events. For 2439/2461 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7363 event pairs, 46 based on Foata normal form. 18/974 useless extension candidates. Maximal degree in co-relation 2113. Up to 52 conditions per place. [2021-12-22 13:41:37,493 INFO L132 encePairwiseOnDemand]: 204/210 looper letters, 17 selfloop transitions, 2 changer transitions 13/234 dead transitions. [2021-12-22 13:41:37,493 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 234 transitions, 950 flow [2021-12-22 13:41:37,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:41:37,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-22 13:41:37,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2021-12-22 13:41:37,495 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2021-12-22 13:41:37,495 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2021-12-22 13:41:37,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2021-12-22 13:41:37,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:37,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2021-12-22 13:41:37,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:37,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:37,497 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:37,497 INFO L186 Difference]: Start difference. First operand has 256 places, 239 transitions, 959 flow. Second operand 3 states and 591 transitions. [2021-12-22 13:41:37,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 234 transitions, 950 flow [2021-12-22 13:41:37,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 234 transitions, 922 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-12-22 13:41:37,511 INFO L242 Difference]: Finished difference. Result has 252 places, 218 transitions, 804 flow [2021-12-22 13:41:37,511 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=804, PETRI_PLACES=252, PETRI_TRANSITIONS=218} [2021-12-22 13:41:37,512 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 65 predicate places. [2021-12-22 13:41:37,512 INFO L470 AbstractCegarLoop]: Abstraction has has 252 places, 218 transitions, 804 flow [2021-12-22 13:41:37,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:37,512 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:37,513 INFO L254 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] [2021-12-22 13:41:37,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 13:41:37,513 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:37,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:37,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1395240836, now seen corresponding path program 2 times [2021-12-22 13:41:37,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:37,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365725421] [2021-12-22 13:41:37,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:37,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:37,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:37,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:37,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365725421] [2021-12-22 13:41:37,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365725421] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:37,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:37,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:37,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736526565] [2021-12-22 13:41:37,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:37,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:37,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:37,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:37,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:37,602 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:37,604 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 218 transitions, 804 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:37,604 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:37,604 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:37,604 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:37,967 INFO L129 PetriNetUnfolder]: 155/1045 cut-off events. [2021-12-22 13:41:37,967 INFO L130 PetriNetUnfolder]: For 3335/3362 co-relation queries the response was YES. [2021-12-22 13:41:37,973 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2985 conditions, 1045 events. 155/1045 cut-off events. For 3335/3362 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 7490 event pairs, 69 based on Foata normal form. 10/1008 useless extension candidates. Maximal degree in co-relation 2264. Up to 246 conditions per place. [2021-12-22 13:41:37,976 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 81 selfloop transitions, 6 changer transitions 41/300 dead transitions. [2021-12-22 13:41:37,977 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 300 transitions, 1524 flow [2021-12-22 13:41:37,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-22 13:41:37,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-22 13:41:37,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4122 transitions. [2021-12-22 13:41:37,980 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8178571428571428 [2021-12-22 13:41:37,981 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4122 transitions. [2021-12-22 13:41:37,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4122 transitions. [2021-12-22 13:41:37,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:37,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4122 transitions. [2021-12-22 13:41:37,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 171.75) internal successors, (4122), 24 states have internal predecessors, (4122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:37,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:37,991 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:37,991 INFO L186 Difference]: Start difference. First operand has 252 places, 218 transitions, 804 flow. Second operand 24 states and 4122 transitions. [2021-12-22 13:41:37,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 300 transitions, 1524 flow [2021-12-22 13:41:38,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 300 transitions, 1478 flow, removed 22 selfloop flow, removed 6 redundant places. [2021-12-22 13:41:38,006 INFO L242 Difference]: Finished difference. Result has 284 places, 222 transitions, 898 flow [2021-12-22 13:41:38,007 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=898, PETRI_PLACES=284, PETRI_TRANSITIONS=222} [2021-12-22 13:41:38,007 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 97 predicate places. [2021-12-22 13:41:38,007 INFO L470 AbstractCegarLoop]: Abstraction has has 284 places, 222 transitions, 898 flow [2021-12-22 13:41:38,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:38,008 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:38,008 INFO L254 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] [2021-12-22 13:41:38,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 13:41:38,008 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:38,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:38,009 INFO L85 PathProgramCache]: Analyzing trace with hash 386763716, now seen corresponding path program 3 times [2021-12-22 13:41:38,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:38,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394937502] [2021-12-22 13:41:38,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:38,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:38,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:38,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:38,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:38,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394937502] [2021-12-22 13:41:38,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394937502] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:38,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:38,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:38,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103344240] [2021-12-22 13:41:38,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:38,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:38,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:38,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:38,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:38,109 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:38,110 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 222 transitions, 898 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:38,110 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:38,110 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:38,111 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:38,403 INFO L129 PetriNetUnfolder]: 160/1084 cut-off events. [2021-12-22 13:41:38,403 INFO L130 PetriNetUnfolder]: For 4946/4970 co-relation queries the response was YES. [2021-12-22 13:41:38,410 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3443 conditions, 1084 events. 160/1084 cut-off events. For 4946/4970 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7871 event pairs, 73 based on Foata normal form. 10/1039 useless extension candidates. Maximal degree in co-relation 3336. Up to 285 conditions per place. [2021-12-22 13:41:38,413 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 64 selfloop transitions, 16 changer transitions 25/277 dead transitions. [2021-12-22 13:41:38,414 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 277 transitions, 1685 flow [2021-12-22 13:41:38,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 13:41:38,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-22 13:41:38,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3091 transitions. [2021-12-22 13:41:38,416 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8177248677248677 [2021-12-22 13:41:38,417 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3091 transitions. [2021-12-22 13:41:38,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3091 transitions. [2021-12-22 13:41:38,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:38,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3091 transitions. [2021-12-22 13:41:38,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.72222222222223) internal successors, (3091), 18 states have internal predecessors, (3091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:38,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:38,424 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:38,424 INFO L186 Difference]: Start difference. First operand has 284 places, 222 transitions, 898 flow. Second operand 18 states and 3091 transitions. [2021-12-22 13:41:38,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 277 transitions, 1685 flow [2021-12-22 13:41:38,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 277 transitions, 1398 flow, removed 142 selfloop flow, removed 14 redundant places. [2021-12-22 13:41:38,443 INFO L242 Difference]: Finished difference. Result has 280 places, 236 transitions, 1023 flow [2021-12-22 13:41:38,444 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1023, PETRI_PLACES=280, PETRI_TRANSITIONS=236} [2021-12-22 13:41:38,444 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 93 predicate places. [2021-12-22 13:41:38,444 INFO L470 AbstractCegarLoop]: Abstraction has has 280 places, 236 transitions, 1023 flow [2021-12-22 13:41:38,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:38,445 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:38,445 INFO L254 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] [2021-12-22 13:41:38,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 13:41:38,446 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:38,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:38,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1471582416, now seen corresponding path program 4 times [2021-12-22 13:41:38,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:38,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181356438] [2021-12-22 13:41:38,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:38,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:38,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:38,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:38,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181356438] [2021-12-22 13:41:38,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181356438] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:38,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:38,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:38,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352309273] [2021-12-22 13:41:38,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:38,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:38,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:38,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:38,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:38,574 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:38,575 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 236 transitions, 1023 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:38,575 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:38,575 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:38,575 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:38,900 INFO L129 PetriNetUnfolder]: 166/1064 cut-off events. [2021-12-22 13:41:38,901 INFO L130 PetriNetUnfolder]: For 3669/3692 co-relation queries the response was YES. [2021-12-22 13:41:38,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3282 conditions, 1064 events. 166/1064 cut-off events. For 3669/3692 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 7626 event pairs, 73 based on Foata normal form. 9/1015 useless extension candidates. Maximal degree in co-relation 3177. Up to 276 conditions per place. [2021-12-22 13:41:38,909 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 66 selfloop transitions, 23 changer transitions 26/287 dead transitions. [2021-12-22 13:41:38,909 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 287 transitions, 1668 flow [2021-12-22 13:41:38,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-22 13:41:38,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-22 13:41:38,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2756 transitions. [2021-12-22 13:41:38,911 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8202380952380952 [2021-12-22 13:41:38,911 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2756 transitions. [2021-12-22 13:41:38,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2756 transitions. [2021-12-22 13:41:38,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:38,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2756 transitions. [2021-12-22 13:41:38,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 172.25) internal successors, (2756), 16 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:38,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:38,919 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:38,919 INFO L186 Difference]: Start difference. First operand has 280 places, 236 transitions, 1023 flow. Second operand 16 states and 2756 transitions. [2021-12-22 13:41:38,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 287 transitions, 1668 flow [2021-12-22 13:41:38,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 287 transitions, 1596 flow, removed 32 selfloop flow, removed 14 redundant places. [2021-12-22 13:41:38,935 INFO L242 Difference]: Finished difference. Result has 283 places, 246 transitions, 1163 flow [2021-12-22 13:41:38,935 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1163, PETRI_PLACES=283, PETRI_TRANSITIONS=246} [2021-12-22 13:41:38,935 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 96 predicate places. [2021-12-22 13:41:38,936 INFO L470 AbstractCegarLoop]: Abstraction has has 283 places, 246 transitions, 1163 flow [2021-12-22 13:41:38,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:38,936 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:38,936 INFO L254 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] [2021-12-22 13:41:38,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 13:41:38,937 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:38,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:38,937 INFO L85 PathProgramCache]: Analyzing trace with hash -2116593152, now seen corresponding path program 5 times [2021-12-22 13:41:38,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:38,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348105876] [2021-12-22 13:41:38,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:38,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:39,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:39,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:39,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348105876] [2021-12-22 13:41:39,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348105876] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:39,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:39,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:39,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317450106] [2021-12-22 13:41:39,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:39,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:39,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:39,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:39,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:39,022 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:39,023 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 246 transitions, 1163 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:39,023 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:39,023 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:39,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:39,330 INFO L129 PetriNetUnfolder]: 181/1158 cut-off events. [2021-12-22 13:41:39,331 INFO L130 PetriNetUnfolder]: For 3961/3984 co-relation queries the response was YES. [2021-12-22 13:41:39,339 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3648 conditions, 1158 events. 181/1158 cut-off events. For 3961/3984 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 8538 event pairs, 82 based on Foata normal form. 10/1111 useless extension candidates. Maximal degree in co-relation 3545. Up to 297 conditions per place. [2021-12-22 13:41:39,343 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 82 selfloop transitions, 23 changer transitions 29/306 dead transitions. [2021-12-22 13:41:39,343 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 306 transitions, 2081 flow [2021-12-22 13:41:39,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-22 13:41:39,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-22 13:41:39,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3431 transitions. [2021-12-22 13:41:39,375 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8169047619047619 [2021-12-22 13:41:39,375 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3431 transitions. [2021-12-22 13:41:39,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3431 transitions. [2021-12-22 13:41:39,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:39,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3431 transitions. [2021-12-22 13:41:39,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.55) internal successors, (3431), 20 states have internal predecessors, (3431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:39,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:39,384 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:39,384 INFO L186 Difference]: Start difference. First operand has 283 places, 246 transitions, 1163 flow. Second operand 20 states and 3431 transitions. [2021-12-22 13:41:39,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 306 transitions, 2081 flow [2021-12-22 13:41:39,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 306 transitions, 1961 flow, removed 37 selfloop flow, removed 8 redundant places. [2021-12-22 13:41:39,401 INFO L242 Difference]: Finished difference. Result has 304 places, 258 transitions, 1368 flow [2021-12-22 13:41:39,402 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1368, PETRI_PLACES=304, PETRI_TRANSITIONS=258} [2021-12-22 13:41:39,402 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 117 predicate places. [2021-12-22 13:41:39,402 INFO L470 AbstractCegarLoop]: Abstraction has has 304 places, 258 transitions, 1368 flow [2021-12-22 13:41:39,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:39,403 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:39,403 INFO L254 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] [2021-12-22 13:41:39,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 13:41:39,403 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:39,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:39,404 INFO L85 PathProgramCache]: Analyzing trace with hash -105746794, now seen corresponding path program 6 times [2021-12-22 13:41:39,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:39,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068884124] [2021-12-22 13:41:39,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:39,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:39,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:39,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:39,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068884124] [2021-12-22 13:41:39,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068884124] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:39,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:39,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:39,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072850802] [2021-12-22 13:41:39,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:39,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:39,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:39,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:39,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:39,492 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:39,493 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 258 transitions, 1368 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:39,493 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:39,493 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:39,493 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:39,818 INFO L129 PetriNetUnfolder]: 184/1172 cut-off events. [2021-12-22 13:41:39,818 INFO L130 PetriNetUnfolder]: For 4910/4938 co-relation queries the response was YES. [2021-12-22 13:41:39,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3935 conditions, 1172 events. 184/1172 cut-off events. For 4910/4938 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 8770 event pairs, 81 based on Foata normal form. 9/1124 useless extension candidates. Maximal degree in co-relation 3821. Up to 285 conditions per place. [2021-12-22 13:41:39,830 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 90 selfloop transitions, 22 changer transitions 33/317 dead transitions. [2021-12-22 13:41:39,831 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 317 transitions, 2379 flow [2021-12-22 13:41:39,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-22 13:41:39,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-22 13:41:39,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3436 transitions. [2021-12-22 13:41:39,865 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8180952380952381 [2021-12-22 13:41:39,865 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3436 transitions. [2021-12-22 13:41:39,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3436 transitions. [2021-12-22 13:41:39,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:39,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3436 transitions. [2021-12-22 13:41:39,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.8) internal successors, (3436), 20 states have internal predecessors, (3436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:39,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:39,875 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:39,875 INFO L186 Difference]: Start difference. First operand has 304 places, 258 transitions, 1368 flow. Second operand 20 states and 3436 transitions. [2021-12-22 13:41:39,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 317 transitions, 2379 flow [2021-12-22 13:41:39,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 317 transitions, 2267 flow, removed 48 selfloop flow, removed 9 redundant places. [2021-12-22 13:41:39,897 INFO L242 Difference]: Finished difference. Result has 319 places, 269 transitions, 1602 flow [2021-12-22 13:41:39,897 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1602, PETRI_PLACES=319, PETRI_TRANSITIONS=269} [2021-12-22 13:41:39,898 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 132 predicate places. [2021-12-22 13:41:39,898 INFO L470 AbstractCegarLoop]: Abstraction has has 319 places, 269 transitions, 1602 flow [2021-12-22 13:41:39,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:39,898 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:39,899 INFO L254 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] [2021-12-22 13:41:39,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 13:41:39,899 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:39,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:39,899 INFO L85 PathProgramCache]: Analyzing trace with hash 889201550, now seen corresponding path program 7 times [2021-12-22 13:41:39,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:39,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110975223] [2021-12-22 13:41:39,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:39,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:39,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:39,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:39,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110975223] [2021-12-22 13:41:39,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110975223] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:39,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:39,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:39,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436496611] [2021-12-22 13:41:39,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:39,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:39,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:39,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:39,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:39,993 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:39,994 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 269 transitions, 1602 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:39,994 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:39,994 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:39,995 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:40,406 INFO L129 PetriNetUnfolder]: 185/1224 cut-off events. [2021-12-22 13:41:40,406 INFO L130 PetriNetUnfolder]: For 5689/5720 co-relation queries the response was YES. [2021-12-22 13:41:40,416 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4158 conditions, 1224 events. 185/1224 cut-off events. For 5689/5720 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 9376 event pairs, 80 based on Foata normal form. 14/1182 useless extension candidates. Maximal degree in co-relation 4035. Up to 306 conditions per place. [2021-12-22 13:41:40,420 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 86 selfloop transitions, 28 changer transitions 35/321 dead transitions. [2021-12-22 13:41:40,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 321 transitions, 2491 flow [2021-12-22 13:41:40,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-22 13:41:40,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-22 13:41:40,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3767 transitions. [2021-12-22 13:41:40,424 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8153679653679654 [2021-12-22 13:41:40,424 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3767 transitions. [2021-12-22 13:41:40,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3767 transitions. [2021-12-22 13:41:40,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:40,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3767 transitions. [2021-12-22 13:41:40,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.22727272727272) internal successors, (3767), 22 states have internal predecessors, (3767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:40,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:40,433 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:40,433 INFO L186 Difference]: Start difference. First operand has 319 places, 269 transitions, 1602 flow. Second operand 22 states and 3767 transitions. [2021-12-22 13:41:40,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 321 transitions, 2491 flow [2021-12-22 13:41:40,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 321 transitions, 2353 flow, removed 60 selfloop flow, removed 12 redundant places. [2021-12-22 13:41:40,462 INFO L242 Difference]: Finished difference. Result has 331 places, 273 transitions, 1677 flow [2021-12-22 13:41:40,463 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1505, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1677, PETRI_PLACES=331, PETRI_TRANSITIONS=273} [2021-12-22 13:41:40,463 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 144 predicate places. [2021-12-22 13:41:40,463 INFO L470 AbstractCegarLoop]: Abstraction has has 331 places, 273 transitions, 1677 flow [2021-12-22 13:41:40,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:40,464 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:40,464 INFO L254 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] [2021-12-22 13:41:40,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 13:41:40,464 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:40,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:40,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1277585082, now seen corresponding path program 8 times [2021-12-22 13:41:40,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:40,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805435896] [2021-12-22 13:41:40,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:40,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:40,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:40,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:40,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805435896] [2021-12-22 13:41:40,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805435896] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:40,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:40,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:40,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232148160] [2021-12-22 13:41:40,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:40,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:40,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:40,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:40,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:40,556 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:40,557 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 273 transitions, 1677 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:40,557 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:40,557 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:40,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:40,917 INFO L129 PetriNetUnfolder]: 180/1222 cut-off events. [2021-12-22 13:41:40,917 INFO L130 PetriNetUnfolder]: For 5544/5575 co-relation queries the response was YES. [2021-12-22 13:41:40,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4119 conditions, 1222 events. 180/1222 cut-off events. For 5544/5575 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 9402 event pairs, 79 based on Foata normal form. 12/1181 useless extension candidates. Maximal degree in co-relation 3992. Up to 298 conditions per place. [2021-12-22 13:41:40,930 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 92 selfloop transitions, 25 changer transitions 36/325 dead transitions. [2021-12-22 13:41:40,930 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 325 transitions, 2655 flow [2021-12-22 13:41:40,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-22 13:41:40,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-22 13:41:40,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3605 transitions. [2021-12-22 13:41:40,933 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8174603174603174 [2021-12-22 13:41:40,934 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3605 transitions. [2021-12-22 13:41:40,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3605 transitions. [2021-12-22 13:41:40,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:40,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3605 transitions. [2021-12-22 13:41:40,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.66666666666666) internal successors, (3605), 21 states have internal predecessors, (3605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:40,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:40,942 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:40,942 INFO L186 Difference]: Start difference. First operand has 331 places, 273 transitions, 1677 flow. Second operand 21 states and 3605 transitions. [2021-12-22 13:41:40,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 325 transitions, 2655 flow [2021-12-22 13:41:40,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 325 transitions, 2495 flow, removed 62 selfloop flow, removed 14 redundant places. [2021-12-22 13:41:40,975 INFO L242 Difference]: Finished difference. Result has 339 places, 278 transitions, 1799 flow [2021-12-22 13:41:40,975 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1597, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1799, PETRI_PLACES=339, PETRI_TRANSITIONS=278} [2021-12-22 13:41:40,976 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 152 predicate places. [2021-12-22 13:41:40,976 INFO L470 AbstractCegarLoop]: Abstraction has has 339 places, 278 transitions, 1799 flow [2021-12-22 13:41:40,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:40,976 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:40,977 INFO L254 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] [2021-12-22 13:41:40,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 13:41:40,977 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:40,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:40,977 INFO L85 PathProgramCache]: Analyzing trace with hash 588377888, now seen corresponding path program 9 times [2021-12-22 13:41:40,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:40,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532907900] [2021-12-22 13:41:40,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:40,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:41,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:41,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:41,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532907900] [2021-12-22 13:41:41,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532907900] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:41,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:41,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:41,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972748190] [2021-12-22 13:41:41,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:41,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:41,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:41,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:41,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:41,061 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:41,062 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 278 transitions, 1799 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:41,062 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:41,062 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:41,062 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:41,365 INFO L129 PetriNetUnfolder]: 162/1131 cut-off events. [2021-12-22 13:41:41,365 INFO L130 PetriNetUnfolder]: For 4992/5018 co-relation queries the response was YES. [2021-12-22 13:41:41,375 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3730 conditions, 1131 events. 162/1131 cut-off events. For 4992/5018 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 8442 event pairs, 76 based on Foata normal form. 13/1089 useless extension candidates. Maximal degree in co-relation 3599. Up to 296 conditions per place. [2021-12-22 13:41:41,378 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 81 selfloop transitions, 18 changer transitions 31/302 dead transitions. [2021-12-22 13:41:41,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 302 transitions, 2300 flow [2021-12-22 13:41:41,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-22 13:41:41,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-22 13:41:41,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2745 transitions. [2021-12-22 13:41:41,381 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8169642857142857 [2021-12-22 13:41:41,381 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2745 transitions. [2021-12-22 13:41:41,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2745 transitions. [2021-12-22 13:41:41,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:41,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2745 transitions. [2021-12-22 13:41:41,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.5625) internal successors, (2745), 16 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:41,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:41,387 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:41,387 INFO L186 Difference]: Start difference. First operand has 339 places, 278 transitions, 1799 flow. Second operand 16 states and 2745 transitions. [2021-12-22 13:41:41,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 302 transitions, 2300 flow [2021-12-22 13:41:41,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 302 transitions, 2146 flow, removed 52 selfloop flow, removed 18 redundant places. [2021-12-22 13:41:41,414 INFO L242 Difference]: Finished difference. Result has 328 places, 262 transitions, 1486 flow [2021-12-22 13:41:41,415 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1671, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1486, PETRI_PLACES=328, PETRI_TRANSITIONS=262} [2021-12-22 13:41:41,415 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 141 predicate places. [2021-12-22 13:41:41,415 INFO L470 AbstractCegarLoop]: Abstraction has has 328 places, 262 transitions, 1486 flow [2021-12-22 13:41:41,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:41,416 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:41,416 INFO L254 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] [2021-12-22 13:41:41,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-22 13:41:41,416 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:41,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:41,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1044741156, now seen corresponding path program 10 times [2021-12-22 13:41:41,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:41,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773938706] [2021-12-22 13:41:41,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:41,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:41,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:41,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:41,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773938706] [2021-12-22 13:41:41,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773938706] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:41,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:41,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:41,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701465230] [2021-12-22 13:41:41,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:41,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:41,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:41,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:41,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:41,503 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:41,503 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 262 transitions, 1486 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:41,504 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:41,504 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:41,504 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:41,790 INFO L129 PetriNetUnfolder]: 166/1162 cut-off events. [2021-12-22 13:41:41,791 INFO L130 PetriNetUnfolder]: For 4414/4438 co-relation queries the response was YES. [2021-12-22 13:41:41,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3747 conditions, 1162 events. 166/1162 cut-off events. For 4414/4438 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 8740 event pairs, 80 based on Foata normal form. 9/1117 useless extension candidates. Maximal degree in co-relation 3672. Up to 298 conditions per place. [2021-12-22 13:41:41,802 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 81 selfloop transitions, 25 changer transitions 28/306 dead transitions. [2021-12-22 13:41:41,802 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 306 transitions, 2268 flow [2021-12-22 13:41:41,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 13:41:41,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-22 13:41:41,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2925 transitions. [2021-12-22 13:41:41,805 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.819327731092437 [2021-12-22 13:41:41,805 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2925 transitions. [2021-12-22 13:41:41,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2925 transitions. [2021-12-22 13:41:41,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:41,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2925 transitions. [2021-12-22 13:41:41,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 172.05882352941177) internal successors, (2925), 17 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:41,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:41,810 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:41,810 INFO L186 Difference]: Start difference. First operand has 328 places, 262 transitions, 1486 flow. Second operand 17 states and 2925 transitions. [2021-12-22 13:41:41,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 306 transitions, 2268 flow [2021-12-22 13:41:41,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 306 transitions, 2147 flow, removed 17 selfloop flow, removed 12 redundant places. [2021-12-22 13:41:41,834 INFO L242 Difference]: Finished difference. Result has 321 places, 270 transitions, 1610 flow [2021-12-22 13:41:41,834 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1610, PETRI_PLACES=321, PETRI_TRANSITIONS=270} [2021-12-22 13:41:41,835 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 134 predicate places. [2021-12-22 13:41:41,835 INFO L470 AbstractCegarLoop]: Abstraction has has 321 places, 270 transitions, 1610 flow [2021-12-22 13:41:41,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:41,835 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:41,835 INFO L254 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] [2021-12-22 13:41:41,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-22 13:41:41,836 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:41,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:41,836 INFO L85 PathProgramCache]: Analyzing trace with hash 811606530, now seen corresponding path program 11 times [2021-12-22 13:41:41,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:41,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431419228] [2021-12-22 13:41:41,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:41,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:41,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:41,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:41,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431419228] [2021-12-22 13:41:41,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431419228] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:41,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:41,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:41,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146972427] [2021-12-22 13:41:41,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:41,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:41,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:41,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:41,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:41,920 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:41,921 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 270 transitions, 1610 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:41,921 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:41,921 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:41,921 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:42,224 INFO L129 PetriNetUnfolder]: 165/1151 cut-off events. [2021-12-22 13:41:42,225 INFO L130 PetriNetUnfolder]: For 4451/4480 co-relation queries the response was YES. [2021-12-22 13:41:42,232 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3757 conditions, 1151 events. 165/1151 cut-off events. For 4451/4480 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 8647 event pairs, 80 based on Foata normal form. 11/1106 useless extension candidates. Maximal degree in co-relation 3680. Up to 300 conditions per place. [2021-12-22 13:41:42,236 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 82 selfloop transitions, 27 changer transitions 28/309 dead transitions. [2021-12-22 13:41:42,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 309 transitions, 2388 flow [2021-12-22 13:41:42,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 13:41:42,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-22 13:41:42,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2923 transitions. [2021-12-22 13:41:42,238 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8187675070028011 [2021-12-22 13:41:42,238 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2923 transitions. [2021-12-22 13:41:42,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2923 transitions. [2021-12-22 13:41:42,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:42,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2923 transitions. [2021-12-22 13:41:42,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.94117647058823) internal successors, (2923), 17 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:42,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:42,244 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:42,244 INFO L186 Difference]: Start difference. First operand has 321 places, 270 transitions, 1610 flow. Second operand 17 states and 2923 transitions. [2021-12-22 13:41:42,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 309 transitions, 2388 flow [2021-12-22 13:41:42,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 309 transitions, 2286 flow, removed 25 selfloop flow, removed 9 redundant places. [2021-12-22 13:41:42,270 INFO L242 Difference]: Finished difference. Result has 329 places, 277 transitions, 1767 flow [2021-12-22 13:41:42,271 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1544, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1767, PETRI_PLACES=329, PETRI_TRANSITIONS=277} [2021-12-22 13:41:42,271 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 142 predicate places. [2021-12-22 13:41:42,271 INFO L470 AbstractCegarLoop]: Abstraction has has 329 places, 277 transitions, 1767 flow [2021-12-22 13:41:42,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:42,272 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:42,272 INFO L254 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] [2021-12-22 13:41:42,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-22 13:41:42,272 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:42,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:42,273 INFO L85 PathProgramCache]: Analyzing trace with hash -247791936, now seen corresponding path program 12 times [2021-12-22 13:41:42,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:42,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842696863] [2021-12-22 13:41:42,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:42,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:42,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:42,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:42,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842696863] [2021-12-22 13:41:42,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842696863] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:42,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:42,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:42,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023037669] [2021-12-22 13:41:42,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:42,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:42,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:42,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:42,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:42,368 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:42,369 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 277 transitions, 1767 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:42,369 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:42,369 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:42,370 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:42,664 INFO L129 PetriNetUnfolder]: 156/1130 cut-off events. [2021-12-22 13:41:42,665 INFO L130 PetriNetUnfolder]: For 4076/4105 co-relation queries the response was YES. [2021-12-22 13:41:42,672 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3585 conditions, 1130 events. 156/1130 cut-off events. For 4076/4105 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8444 event pairs, 78 based on Foata normal form. 11/1088 useless extension candidates. Maximal degree in co-relation 3505. Up to 292 conditions per place. [2021-12-22 13:41:42,675 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 79 selfloop transitions, 16 changer transitions 34/301 dead transitions. [2021-12-22 13:41:42,675 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 301 transitions, 2223 flow [2021-12-22 13:41:42,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 13:41:42,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-22 13:41:42,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3088 transitions. [2021-12-22 13:41:42,677 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.816931216931217 [2021-12-22 13:41:42,677 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3088 transitions. [2021-12-22 13:41:42,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3088 transitions. [2021-12-22 13:41:42,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:42,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3088 transitions. [2021-12-22 13:41:42,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.55555555555554) internal successors, (3088), 18 states have internal predecessors, (3088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:42,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:42,683 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:42,683 INFO L186 Difference]: Start difference. First operand has 329 places, 277 transitions, 1767 flow. Second operand 18 states and 3088 transitions. [2021-12-22 13:41:42,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 301 transitions, 2223 flow [2021-12-22 13:41:42,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 301 transitions, 2131 flow, removed 29 selfloop flow, removed 8 redundant places. [2021-12-22 13:41:42,706 INFO L242 Difference]: Finished difference. Result has 335 places, 263 transitions, 1501 flow [2021-12-22 13:41:42,706 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1683, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1501, PETRI_PLACES=335, PETRI_TRANSITIONS=263} [2021-12-22 13:41:42,707 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 148 predicate places. [2021-12-22 13:41:42,707 INFO L470 AbstractCegarLoop]: Abstraction has has 335 places, 263 transitions, 1501 flow [2021-12-22 13:41:42,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:42,707 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:42,707 INFO L254 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] [2021-12-22 13:41:42,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-22 13:41:42,708 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:42,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:42,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1057827110, now seen corresponding path program 13 times [2021-12-22 13:41:42,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:42,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776944784] [2021-12-22 13:41:42,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:42,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:42,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:42,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:42,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:42,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776944784] [2021-12-22 13:41:42,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776944784] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:42,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:42,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:42,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817326918] [2021-12-22 13:41:42,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:42,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:42,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:42,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:42,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:42,802 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:42,803 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 263 transitions, 1501 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:42,803 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:42,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:42,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:43,066 INFO L129 PetriNetUnfolder]: 143/1038 cut-off events. [2021-12-22 13:41:43,067 INFO L130 PetriNetUnfolder]: For 3529/3553 co-relation queries the response was YES. [2021-12-22 13:41:43,074 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3209 conditions, 1038 events. 143/1038 cut-off events. For 3529/3553 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7469 event pairs, 75 based on Foata normal form. 9/996 useless extension candidates. Maximal degree in co-relation 3130. Up to 281 conditions per place. [2021-12-22 13:41:43,077 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 69 selfloop transitions, 5 changer transitions 33/279 dead transitions. [2021-12-22 13:41:43,077 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 279 transitions, 1835 flow [2021-12-22 13:41:43,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 13:41:43,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-22 13:41:43,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3077 transitions. [2021-12-22 13:41:43,079 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.814021164021164 [2021-12-22 13:41:43,079 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3077 transitions. [2021-12-22 13:41:43,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3077 transitions. [2021-12-22 13:41:43,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:43,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3077 transitions. [2021-12-22 13:41:43,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.94444444444446) internal successors, (3077), 18 states have internal predecessors, (3077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:43,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:43,085 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:43,085 INFO L186 Difference]: Start difference. First operand has 335 places, 263 transitions, 1501 flow. Second operand 18 states and 3077 transitions. [2021-12-22 13:41:43,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 279 transitions, 1835 flow [2021-12-22 13:41:43,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 279 transitions, 1735 flow, removed 19 selfloop flow, removed 17 redundant places. [2021-12-22 13:41:43,106 INFO L242 Difference]: Finished difference. Result has 323 places, 243 transitions, 1166 flow [2021-12-22 13:41:43,107 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1413, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1166, PETRI_PLACES=323, PETRI_TRANSITIONS=243} [2021-12-22 13:41:43,107 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 136 predicate places. [2021-12-22 13:41:43,107 INFO L470 AbstractCegarLoop]: Abstraction has has 323 places, 243 transitions, 1166 flow [2021-12-22 13:41:43,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:43,108 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:43,108 INFO L254 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] [2021-12-22 13:41:43,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-22 13:41:43,108 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:43,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:43,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1617177460, now seen corresponding path program 14 times [2021-12-22 13:41:43,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:43,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646800617] [2021-12-22 13:41:43,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:43,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:43,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:43,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:43,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646800617] [2021-12-22 13:41:43,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646800617] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:43,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:43,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:43,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723648913] [2021-12-22 13:41:43,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:43,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:43,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:43,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:43,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:43,195 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:43,196 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 243 transitions, 1166 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:43,196 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:43,196 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:43,196 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:43,508 INFO L129 PetriNetUnfolder]: 146/1060 cut-off events. [2021-12-22 13:41:43,509 INFO L130 PetriNetUnfolder]: For 3335/3357 co-relation queries the response was YES. [2021-12-22 13:41:43,517 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3208 conditions, 1060 events. 146/1060 cut-off events. For 3335/3357 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 7772 event pairs, 71 based on Foata normal form. 9/1017 useless extension candidates. Maximal degree in co-relation 3134. Up to 259 conditions per place. [2021-12-22 13:41:43,520 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 63 selfloop transitions, 23 changer transitions 34/292 dead transitions. [2021-12-22 13:41:43,520 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 292 transitions, 1942 flow [2021-12-22 13:41:43,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-22 13:41:43,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-22 13:41:43,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3765 transitions. [2021-12-22 13:41:43,524 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.814935064935065 [2021-12-22 13:41:43,524 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3765 transitions. [2021-12-22 13:41:43,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3765 transitions. [2021-12-22 13:41:43,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:43,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3765 transitions. [2021-12-22 13:41:43,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.13636363636363) internal successors, (3765), 22 states have internal predecessors, (3765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:43,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:43,531 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:43,531 INFO L186 Difference]: Start difference. First operand has 323 places, 243 transitions, 1166 flow. Second operand 22 states and 3765 transitions. [2021-12-22 13:41:43,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 292 transitions, 1942 flow [2021-12-22 13:41:43,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 292 transitions, 1796 flow, removed 34 selfloop flow, removed 21 redundant places. [2021-12-22 13:41:43,553 INFO L242 Difference]: Finished difference. Result has 309 places, 248 transitions, 1240 flow [2021-12-22 13:41:43,553 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1240, PETRI_PLACES=309, PETRI_TRANSITIONS=248} [2021-12-22 13:41:43,554 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 122 predicate places. [2021-12-22 13:41:43,554 INFO L470 AbstractCegarLoop]: Abstraction has has 309 places, 248 transitions, 1240 flow [2021-12-22 13:41:43,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:43,555 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:43,555 INFO L254 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] [2021-12-22 13:41:43,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-22 13:41:43,555 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:43,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:43,556 INFO L85 PathProgramCache]: Analyzing trace with hash 428836932, now seen corresponding path program 15 times [2021-12-22 13:41:43,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:43,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748454471] [2021-12-22 13:41:43,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:43,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:43,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:43,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:43,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748454471] [2021-12-22 13:41:43,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748454471] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:43,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:43,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:43,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437954225] [2021-12-22 13:41:43,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:43,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:43,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:43,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:43,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:43,644 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:43,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 248 transitions, 1240 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:43,645 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:43,645 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:43,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:43,920 INFO L129 PetriNetUnfolder]: 148/1086 cut-off events. [2021-12-22 13:41:43,920 INFO L130 PetriNetUnfolder]: For 3621/3643 co-relation queries the response was YES. [2021-12-22 13:41:43,928 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3325 conditions, 1086 events. 148/1086 cut-off events. For 3621/3643 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8049 event pairs, 71 based on Foata normal form. 11/1047 useless extension candidates. Maximal degree in co-relation 3254. Up to 265 conditions per place. [2021-12-22 13:41:43,930 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 64 selfloop transitions, 27 changer transitions 27/290 dead transitions. [2021-12-22 13:41:43,930 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 290 transitions, 1954 flow [2021-12-22 13:41:43,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 13:41:43,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-22 13:41:43,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2920 transitions. [2021-12-22 13:41:43,933 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8179271708683473 [2021-12-22 13:41:43,933 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2920 transitions. [2021-12-22 13:41:43,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2920 transitions. [2021-12-22 13:41:43,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:43,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2920 transitions. [2021-12-22 13:41:43,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.76470588235293) internal successors, (2920), 17 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:43,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:43,938 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:43,938 INFO L186 Difference]: Start difference. First operand has 309 places, 248 transitions, 1240 flow. Second operand 17 states and 2920 transitions. [2021-12-22 13:41:43,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 290 transitions, 1954 flow [2021-12-22 13:41:43,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 290 transitions, 1866 flow, removed 31 selfloop flow, removed 13 redundant places. [2021-12-22 13:41:43,956 INFO L242 Difference]: Finished difference. Result has 308 places, 256 transitions, 1409 flow [2021-12-22 13:41:43,957 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1409, PETRI_PLACES=308, PETRI_TRANSITIONS=256} [2021-12-22 13:41:43,957 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 121 predicate places. [2021-12-22 13:41:43,957 INFO L470 AbstractCegarLoop]: Abstraction has has 308 places, 256 transitions, 1409 flow [2021-12-22 13:41:43,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:43,958 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:43,958 INFO L254 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] [2021-12-22 13:41:43,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-22 13:41:43,958 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:43,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:43,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1915196226, now seen corresponding path program 16 times [2021-12-22 13:41:43,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:43,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960430945] [2021-12-22 13:41:43,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:43,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:44,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:44,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:44,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960430945] [2021-12-22 13:41:44,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960430945] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:44,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:44,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:44,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19316541] [2021-12-22 13:41:44,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:44,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:44,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:44,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:44,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:44,041 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:44,042 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 256 transitions, 1409 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:44,042 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:44,042 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:44,042 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:44,307 INFO L129 PetriNetUnfolder]: 138/1037 cut-off events. [2021-12-22 13:41:44,307 INFO L130 PetriNetUnfolder]: For 3304/3326 co-relation queries the response was YES. [2021-12-22 13:41:44,315 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3131 conditions, 1037 events. 138/1037 cut-off events. For 3304/3326 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 7508 event pairs, 71 based on Foata normal form. 9/995 useless extension candidates. Maximal degree in co-relation 3061. Up to 260 conditions per place. [2021-12-22 13:41:44,318 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 61 selfloop transitions, 14 changer transitions 33/280 dead transitions. [2021-12-22 13:41:44,318 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 280 transitions, 1849 flow [2021-12-22 13:41:44,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 13:41:44,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-22 13:41:44,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3083 transitions. [2021-12-22 13:41:44,320 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8156084656084656 [2021-12-22 13:41:44,320 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3083 transitions. [2021-12-22 13:41:44,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3083 transitions. [2021-12-22 13:41:44,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:44,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3083 transitions. [2021-12-22 13:41:44,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.27777777777777) internal successors, (3083), 18 states have internal predecessors, (3083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:44,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:44,326 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:44,326 INFO L186 Difference]: Start difference. First operand has 308 places, 256 transitions, 1409 flow. Second operand 18 states and 3083 transitions. [2021-12-22 13:41:44,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 280 transitions, 1849 flow [2021-12-22 13:41:44,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 280 transitions, 1745 flow, removed 30 selfloop flow, removed 9 redundant places. [2021-12-22 13:41:44,344 INFO L242 Difference]: Finished difference. Result has 315 places, 241 transitions, 1164 flow [2021-12-22 13:41:44,345 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1324, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1164, PETRI_PLACES=315, PETRI_TRANSITIONS=241} [2021-12-22 13:41:44,345 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 128 predicate places. [2021-12-22 13:41:44,345 INFO L470 AbstractCegarLoop]: Abstraction has has 315 places, 241 transitions, 1164 flow [2021-12-22 13:41:44,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:44,346 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:44,346 INFO L254 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] [2021-12-22 13:41:44,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-22 13:41:44,346 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:44,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:44,347 INFO L85 PathProgramCache]: Analyzing trace with hash 2072010770, now seen corresponding path program 17 times [2021-12-22 13:41:44,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:44,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872527340] [2021-12-22 13:41:44,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:44,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:44,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:44,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:44,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872527340] [2021-12-22 13:41:44,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872527340] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:44,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:44,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:44,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126367879] [2021-12-22 13:41:44,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:44,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:44,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:44,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:44,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:44,447 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:44,448 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 241 transitions, 1164 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:44,448 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:44,448 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:44,448 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:44,735 INFO L129 PetriNetUnfolder]: 138/1033 cut-off events. [2021-12-22 13:41:44,735 INFO L130 PetriNetUnfolder]: For 3545/3565 co-relation queries the response was YES. [2021-12-22 13:41:44,742 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3112 conditions, 1033 events. 138/1033 cut-off events. For 3545/3565 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 7476 event pairs, 70 based on Foata normal form. 9/992 useless extension candidates. Maximal degree in co-relation 3041. Up to 251 conditions per place. [2021-12-22 13:41:44,745 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 57 selfloop transitions, 20 changer transitions 34/283 dead transitions. [2021-12-22 13:41:44,745 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 283 transitions, 1927 flow [2021-12-22 13:41:44,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-22 13:41:44,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-22 13:41:44,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3594 transitions. [2021-12-22 13:41:44,760 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8149659863945579 [2021-12-22 13:41:44,768 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3594 transitions. [2021-12-22 13:41:44,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3594 transitions. [2021-12-22 13:41:44,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:44,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3594 transitions. [2021-12-22 13:41:44,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.14285714285714) internal successors, (3594), 21 states have internal predecessors, (3594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:44,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:44,774 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:44,774 INFO L186 Difference]: Start difference. First operand has 315 places, 241 transitions, 1164 flow. Second operand 21 states and 3594 transitions. [2021-12-22 13:41:44,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 283 transitions, 1927 flow [2021-12-22 13:41:44,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 283 transitions, 1749 flow, removed 49 selfloop flow, removed 18 redundant places. [2021-12-22 13:41:44,805 INFO L242 Difference]: Finished difference. Result has 307 places, 244 transitions, 1229 flow [2021-12-22 13:41:44,806 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1229, PETRI_PLACES=307, PETRI_TRANSITIONS=244} [2021-12-22 13:41:44,806 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 120 predicate places. [2021-12-22 13:41:44,806 INFO L470 AbstractCegarLoop]: Abstraction has has 307 places, 244 transitions, 1229 flow [2021-12-22 13:41:44,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:44,807 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:44,807 INFO L254 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] [2021-12-22 13:41:44,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-22 13:41:44,807 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:44,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:44,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1943238090, now seen corresponding path program 18 times [2021-12-22 13:41:44,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:44,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602496855] [2021-12-22 13:41:44,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:44,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:44,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:44,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:44,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602496855] [2021-12-22 13:41:44,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602496855] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:44,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:44,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:44,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309387302] [2021-12-22 13:41:44,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:44,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:44,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:44,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:44,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:44,940 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:44,940 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 244 transitions, 1229 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:44,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:44,941 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:44,941 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:45,201 INFO L129 PetriNetUnfolder]: 133/999 cut-off events. [2021-12-22 13:41:45,201 INFO L130 PetriNetUnfolder]: For 3165/3185 co-relation queries the response was YES. [2021-12-22 13:41:45,207 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2984 conditions, 999 events. 133/999 cut-off events. For 3165/3185 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7102 event pairs, 71 based on Foata normal form. 9/957 useless extension candidates. Maximal degree in co-relation 2913. Up to 255 conditions per place. [2021-12-22 13:41:45,210 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 53 selfloop transitions, 21 changer transitions 30/276 dead transitions. [2021-12-22 13:41:45,210 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 276 transitions, 1809 flow [2021-12-22 13:41:45,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 13:41:45,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-22 13:41:45,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3087 transitions. [2021-12-22 13:41:45,213 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2021-12-22 13:41:45,213 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3087 transitions. [2021-12-22 13:41:45,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3087 transitions. [2021-12-22 13:41:45,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:45,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3087 transitions. [2021-12-22 13:41:45,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.5) internal successors, (3087), 18 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:45,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:45,218 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:45,218 INFO L186 Difference]: Start difference. First operand has 307 places, 244 transitions, 1229 flow. Second operand 18 states and 3087 transitions. [2021-12-22 13:41:45,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 276 transitions, 1809 flow [2021-12-22 13:41:45,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 276 transitions, 1692 flow, removed 44 selfloop flow, removed 14 redundant places. [2021-12-22 13:41:45,237 INFO L242 Difference]: Finished difference. Result has 302 places, 244 transitions, 1239 flow [2021-12-22 13:41:45,237 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1239, PETRI_PLACES=302, PETRI_TRANSITIONS=244} [2021-12-22 13:41:45,238 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 115 predicate places. [2021-12-22 13:41:45,239 INFO L470 AbstractCegarLoop]: Abstraction has has 302 places, 244 transitions, 1239 flow [2021-12-22 13:41:45,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:45,239 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:45,239 INFO L254 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] [2021-12-22 13:41:45,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-22 13:41:45,240 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:45,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:45,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1724336444, now seen corresponding path program 19 times [2021-12-22 13:41:45,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:45,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384653627] [2021-12-22 13:41:45,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:45,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:45,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:45,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:45,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384653627] [2021-12-22 13:41:45,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384653627] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:45,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:45,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:45,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393009274] [2021-12-22 13:41:45,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:45,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:45,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:45,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:45,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:45,347 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:45,348 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 244 transitions, 1239 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:45,348 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:45,348 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:45,348 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:45,612 INFO L129 PetriNetUnfolder]: 129/984 cut-off events. [2021-12-22 13:41:45,612 INFO L130 PetriNetUnfolder]: For 2820/2840 co-relation queries the response was YES. [2021-12-22 13:41:45,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2834 conditions, 984 events. 129/984 cut-off events. For 2820/2840 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6951 event pairs, 71 based on Foata normal form. 9/943 useless extension candidates. Maximal degree in co-relation 2769. Up to 254 conditions per place. [2021-12-22 13:41:45,620 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 51 selfloop transitions, 13 changer transitions 32/268 dead transitions. [2021-12-22 13:41:45,620 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 268 transitions, 1607 flow [2021-12-22 13:41:45,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 13:41:45,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-22 13:41:45,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3084 transitions. [2021-12-22 13:41:45,622 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8158730158730159 [2021-12-22 13:41:45,622 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3084 transitions. [2021-12-22 13:41:45,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3084 transitions. [2021-12-22 13:41:45,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:45,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3084 transitions. [2021-12-22 13:41:45,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.33333333333334) internal successors, (3084), 18 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:45,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:45,627 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:45,627 INFO L186 Difference]: Start difference. First operand has 302 places, 244 transitions, 1239 flow. Second operand 18 states and 3084 transitions. [2021-12-22 13:41:45,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 268 transitions, 1607 flow [2021-12-22 13:41:45,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 268 transitions, 1479 flow, removed 26 selfloop flow, removed 15 redundant places. [2021-12-22 13:41:45,642 INFO L242 Difference]: Finished difference. Result has 303 places, 235 transitions, 1062 flow [2021-12-22 13:41:45,643 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1062, PETRI_PLACES=303, PETRI_TRANSITIONS=235} [2021-12-22 13:41:45,643 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 116 predicate places. [2021-12-22 13:41:45,644 INFO L470 AbstractCegarLoop]: Abstraction has has 303 places, 235 transitions, 1062 flow [2021-12-22 13:41:45,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:45,644 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:45,644 INFO L254 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] [2021-12-22 13:41:45,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-22 13:41:45,644 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:45,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:45,645 INFO L85 PathProgramCache]: Analyzing trace with hash -577054250, now seen corresponding path program 20 times [2021-12-22 13:41:45,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:45,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554498747] [2021-12-22 13:41:45,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:45,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:45,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:45,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:45,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554498747] [2021-12-22 13:41:45,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554498747] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:45,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:45,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:45,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328505530] [2021-12-22 13:41:45,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:45,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:45,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:45,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:45,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:45,740 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:45,741 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 235 transitions, 1062 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:45,741 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:45,741 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:45,741 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:45,993 INFO L129 PetriNetUnfolder]: 116/882 cut-off events. [2021-12-22 13:41:45,993 INFO L130 PetriNetUnfolder]: For 2289/2309 co-relation queries the response was YES. [2021-12-22 13:41:45,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2461 conditions, 882 events. 116/882 cut-off events. For 2289/2309 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5971 event pairs, 68 based on Foata normal form. 9/843 useless extension candidates. Maximal degree in co-relation 2398. Up to 234 conditions per place. [2021-12-22 13:41:46,001 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 38 selfloop transitions, 0 changer transitions 44/248 dead transitions. [2021-12-22 13:41:46,001 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 248 transitions, 1258 flow [2021-12-22 13:41:46,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 13:41:46,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-22 13:41:46,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2905 transitions. [2021-12-22 13:41:46,021 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8137254901960784 [2021-12-22 13:41:46,021 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2905 transitions. [2021-12-22 13:41:46,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2905 transitions. [2021-12-22 13:41:46,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:46,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2905 transitions. [2021-12-22 13:41:46,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 170.88235294117646) internal successors, (2905), 17 states have internal predecessors, (2905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:46,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:46,026 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:46,026 INFO L186 Difference]: Start difference. First operand has 303 places, 235 transitions, 1062 flow. Second operand 17 states and 2905 transitions. [2021-12-22 13:41:46,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 248 transitions, 1258 flow [2021-12-22 13:41:46,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 248 transitions, 1171 flow, removed 17 selfloop flow, removed 18 redundant places. [2021-12-22 13:41:46,040 INFO L242 Difference]: Finished difference. Result has 287 places, 204 transitions, 701 flow [2021-12-22 13:41:46,041 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=701, PETRI_PLACES=287, PETRI_TRANSITIONS=204} [2021-12-22 13:41:46,044 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 100 predicate places. [2021-12-22 13:41:46,044 INFO L470 AbstractCegarLoop]: Abstraction has has 287 places, 204 transitions, 701 flow [2021-12-22 13:41:46,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:46,045 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:46,045 INFO L254 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] [2021-12-22 13:41:46,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-22 13:41:46,047 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:46,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:46,047 INFO L85 PathProgramCache]: Analyzing trace with hash 613911462, now seen corresponding path program 3 times [2021-12-22 13:41:46,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:46,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832735220] [2021-12-22 13:41:46,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:46,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:46,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:46,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:46,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832735220] [2021-12-22 13:41:46,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832735220] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:46,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:46,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:46,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332606217] [2021-12-22 13:41:46,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:46,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:46,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:46,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:46,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:46,148 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:46,149 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 204 transitions, 701 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:46,149 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:46,149 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:46,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:46,423 INFO L129 PetriNetUnfolder]: 122/857 cut-off events. [2021-12-22 13:41:46,423 INFO L130 PetriNetUnfolder]: For 2280/2288 co-relation queries the response was YES. [2021-12-22 13:41:46,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2344 conditions, 857 events. 122/857 cut-off events. For 2280/2288 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5766 event pairs, 50 based on Foata normal form. 1/814 useless extension candidates. Maximal degree in co-relation 2291. Up to 156 conditions per place. [2021-12-22 13:41:46,429 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 65 selfloop transitions, 15 changer transitions 29/265 dead transitions. [2021-12-22 13:41:46,429 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 265 transitions, 1517 flow [2021-12-22 13:41:46,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-22 13:41:46,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-22 13:41:46,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3430 transitions. [2021-12-22 13:41:46,431 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2021-12-22 13:41:46,431 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3430 transitions. [2021-12-22 13:41:46,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3430 transitions. [2021-12-22 13:41:46,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:46,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3430 transitions. [2021-12-22 13:41:46,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.5) internal successors, (3430), 20 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:46,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:46,437 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:46,437 INFO L186 Difference]: Start difference. First operand has 287 places, 204 transitions, 701 flow. Second operand 20 states and 3430 transitions. [2021-12-22 13:41:46,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 265 transitions, 1517 flow [2021-12-22 13:41:46,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 265 transitions, 1440 flow, removed 34 selfloop flow, removed 12 redundant places. [2021-12-22 13:41:46,446 INFO L242 Difference]: Finished difference. Result has 266 places, 216 transitions, 910 flow [2021-12-22 13:41:46,446 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=910, PETRI_PLACES=266, PETRI_TRANSITIONS=216} [2021-12-22 13:41:46,447 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 79 predicate places. [2021-12-22 13:41:46,447 INFO L470 AbstractCegarLoop]: Abstraction has has 266 places, 216 transitions, 910 flow [2021-12-22 13:41:46,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:46,447 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:46,447 INFO L254 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] [2021-12-22 13:41:46,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-22 13:41:46,448 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:46,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:46,448 INFO L85 PathProgramCache]: Analyzing trace with hash -749731324, now seen corresponding path program 4 times [2021-12-22 13:41:46,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:46,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256363215] [2021-12-22 13:41:46,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:46,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:46,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:46,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:46,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256363215] [2021-12-22 13:41:46,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256363215] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:46,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:46,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:46,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909146420] [2021-12-22 13:41:46,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:46,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:46,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:46,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:46,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:46,539 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:46,540 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 216 transitions, 910 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:46,540 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:46,540 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:46,540 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:46,848 INFO L129 PetriNetUnfolder]: 121/853 cut-off events. [2021-12-22 13:41:46,849 INFO L130 PetriNetUnfolder]: For 3579/3588 co-relation queries the response was YES. [2021-12-22 13:41:46,854 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2584 conditions, 853 events. 121/853 cut-off events. For 3579/3588 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5747 event pairs, 43 based on Foata normal form. 1/812 useless extension candidates. Maximal degree in co-relation 2525. Up to 114 conditions per place. [2021-12-22 13:41:46,856 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 83 selfloop transitions, 17 changer transitions 38/294 dead transitions. [2021-12-22 13:41:46,856 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 294 transitions, 2066 flow [2021-12-22 13:41:46,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-22 13:41:46,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-22 13:41:46,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4114 transitions. [2021-12-22 13:41:46,860 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8162698412698413 [2021-12-22 13:41:46,860 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4114 transitions. [2021-12-22 13:41:46,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4114 transitions. [2021-12-22 13:41:46,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:46,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4114 transitions. [2021-12-22 13:41:46,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 171.41666666666666) internal successors, (4114), 24 states have internal predecessors, (4114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:46,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:46,867 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:46,867 INFO L186 Difference]: Start difference. First operand has 266 places, 216 transitions, 910 flow. Second operand 24 states and 4114 transitions. [2021-12-22 13:41:46,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 294 transitions, 2066 flow [2021-12-22 13:41:46,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 294 transitions, 1782 flow, removed 142 selfloop flow, removed 8 redundant places. [2021-12-22 13:41:46,880 INFO L242 Difference]: Finished difference. Result has 289 places, 219 transitions, 959 flow [2021-12-22 13:41:46,881 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=959, PETRI_PLACES=289, PETRI_TRANSITIONS=219} [2021-12-22 13:41:46,881 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 102 predicate places. [2021-12-22 13:41:46,882 INFO L470 AbstractCegarLoop]: Abstraction has has 289 places, 219 transitions, 959 flow [2021-12-22 13:41:46,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:46,882 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:46,882 INFO L254 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] [2021-12-22 13:41:46,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-22 13:41:46,883 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:46,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:46,884 INFO L85 PathProgramCache]: Analyzing trace with hash 726672324, now seen corresponding path program 5 times [2021-12-22 13:41:46,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:46,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850993456] [2021-12-22 13:41:46,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:46,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:46,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:46,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:46,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850993456] [2021-12-22 13:41:46,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850993456] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:46,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:46,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:46,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994155121] [2021-12-22 13:41:46,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:46,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:46,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:46,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:46,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:46,969 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:46,970 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 219 transitions, 959 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:46,970 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:46,970 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:46,970 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:47,287 INFO L129 PetriNetUnfolder]: 131/932 cut-off events. [2021-12-22 13:41:47,287 INFO L130 PetriNetUnfolder]: For 4052/4059 co-relation queries the response was YES. [2021-12-22 13:41:47,292 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2892 conditions, 932 events. 131/932 cut-off events. For 4052/4059 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6578 event pairs, 46 based on Foata normal form. 4/895 useless extension candidates. Maximal degree in co-relation 2820. Up to 165 conditions per place. [2021-12-22 13:41:47,311 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 74 selfloop transitions, 24 changer transitions 30/284 dead transitions. [2021-12-22 13:41:47,315 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 284 transitions, 1964 flow [2021-12-22 13:41:47,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-22 13:41:47,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-22 13:41:47,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3766 transitions. [2021-12-22 13:41:47,318 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8151515151515152 [2021-12-22 13:41:47,318 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3766 transitions. [2021-12-22 13:41:47,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3766 transitions. [2021-12-22 13:41:47,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:47,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3766 transitions. [2021-12-22 13:41:47,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.1818181818182) internal successors, (3766), 22 states have internal predecessors, (3766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:47,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:47,323 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:47,324 INFO L186 Difference]: Start difference. First operand has 289 places, 219 transitions, 959 flow. Second operand 22 states and 3766 transitions. [2021-12-22 13:41:47,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 284 transitions, 1964 flow [2021-12-22 13:41:47,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 284 transitions, 1841 flow, removed 54 selfloop flow, removed 19 redundant places. [2021-12-22 13:41:47,337 INFO L242 Difference]: Finished difference. Result has 289 places, 231 transitions, 1150 flow [2021-12-22 13:41:47,338 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=897, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1150, PETRI_PLACES=289, PETRI_TRANSITIONS=231} [2021-12-22 13:41:47,338 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 102 predicate places. [2021-12-22 13:41:47,338 INFO L470 AbstractCegarLoop]: Abstraction has has 289 places, 231 transitions, 1150 flow [2021-12-22 13:41:47,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:47,338 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:47,339 INFO L254 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] [2021-12-22 13:41:47,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-22 13:41:47,339 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:47,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:47,339 INFO L85 PathProgramCache]: Analyzing trace with hash 323320088, now seen corresponding path program 6 times [2021-12-22 13:41:47,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:47,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68435022] [2021-12-22 13:41:47,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:47,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:47,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:47,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:47,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68435022] [2021-12-22 13:41:47,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68435022] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:47,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:47,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:47,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033366949] [2021-12-22 13:41:47,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:47,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:47,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:47,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:47,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:47,419 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:47,420 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 231 transitions, 1150 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:47,420 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:47,420 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:47,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:47,695 INFO L129 PetriNetUnfolder]: 128/911 cut-off events. [2021-12-22 13:41:47,695 INFO L130 PetriNetUnfolder]: For 3777/3794 co-relation queries the response was YES. [2021-12-22 13:41:47,700 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2855 conditions, 911 events. 128/911 cut-off events. For 3777/3794 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6383 event pairs, 48 based on Foata normal form. 5/874 useless extension candidates. Maximal degree in co-relation 2785. Up to 161 conditions per place. [2021-12-22 13:41:47,702 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 70 selfloop transitions, 24 changer transitions 31/281 dead transitions. [2021-12-22 13:41:47,702 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 281 transitions, 2044 flow [2021-12-22 13:41:47,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-22 13:41:47,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-22 13:41:47,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3601 transitions. [2021-12-22 13:41:47,712 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8165532879818594 [2021-12-22 13:41:47,712 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3601 transitions. [2021-12-22 13:41:47,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3601 transitions. [2021-12-22 13:41:47,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:47,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3601 transitions. [2021-12-22 13:41:47,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.47619047619048) internal successors, (3601), 21 states have internal predecessors, (3601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:47,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:47,717 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:47,718 INFO L186 Difference]: Start difference. First operand has 289 places, 231 transitions, 1150 flow. Second operand 21 states and 3601 transitions. [2021-12-22 13:41:47,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 281 transitions, 2044 flow [2021-12-22 13:41:47,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 281 transitions, 1908 flow, removed 61 selfloop flow, removed 14 redundant places. [2021-12-22 13:41:47,733 INFO L242 Difference]: Finished difference. Result has 297 places, 235 transitions, 1270 flow [2021-12-22 13:41:47,733 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1270, PETRI_PLACES=297, PETRI_TRANSITIONS=235} [2021-12-22 13:41:47,733 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 110 predicate places. [2021-12-22 13:41:47,733 INFO L470 AbstractCegarLoop]: Abstraction has has 297 places, 235 transitions, 1270 flow [2021-12-22 13:41:47,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:47,734 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:47,734 INFO L254 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] [2021-12-22 13:41:47,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-22 13:41:47,734 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:47,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:47,735 INFO L85 PathProgramCache]: Analyzing trace with hash 2004422760, now seen corresponding path program 7 times [2021-12-22 13:41:47,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:47,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625447878] [2021-12-22 13:41:47,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:47,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:47,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:47,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:47,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625447878] [2021-12-22 13:41:47,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625447878] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:47,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:47,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:47,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931074874] [2021-12-22 13:41:47,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:47,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:47,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:47,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:47,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:47,807 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:47,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 235 transitions, 1270 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:47,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:47,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:47,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:48,039 INFO L129 PetriNetUnfolder]: 120/860 cut-off events. [2021-12-22 13:41:48,039 INFO L130 PetriNetUnfolder]: For 3763/3775 co-relation queries the response was YES. [2021-12-22 13:41:48,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2715 conditions, 860 events. 120/860 cut-off events. For 3763/3775 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5790 event pairs, 41 based on Foata normal form. 6/828 useless extension candidates. Maximal degree in co-relation 2642. Up to 165 conditions per place. [2021-12-22 13:41:48,047 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 72 selfloop transitions, 27 changer transitions 25/280 dead transitions. [2021-12-22 13:41:48,047 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 280 transitions, 2105 flow [2021-12-22 13:41:48,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 13:41:48,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-22 13:41:48,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3086 transitions. [2021-12-22 13:41:48,049 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8164021164021164 [2021-12-22 13:41:48,049 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3086 transitions. [2021-12-22 13:41:48,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3086 transitions. [2021-12-22 13:41:48,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:48,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3086 transitions. [2021-12-22 13:41:48,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.44444444444446) internal successors, (3086), 18 states have internal predecessors, (3086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:48,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:48,054 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:48,054 INFO L186 Difference]: Start difference. First operand has 297 places, 235 transitions, 1270 flow. Second operand 18 states and 3086 transitions. [2021-12-22 13:41:48,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 280 transitions, 2105 flow [2021-12-22 13:41:48,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 280 transitions, 1921 flow, removed 67 selfloop flow, removed 14 redundant places. [2021-12-22 13:41:48,069 INFO L242 Difference]: Finished difference. Result has 296 places, 241 transitions, 1350 flow [2021-12-22 13:41:48,070 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1160, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1350, PETRI_PLACES=296, PETRI_TRANSITIONS=241} [2021-12-22 13:41:48,070 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 109 predicate places. [2021-12-22 13:41:48,070 INFO L470 AbstractCegarLoop]: Abstraction has has 296 places, 241 transitions, 1350 flow [2021-12-22 13:41:48,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:48,071 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:48,071 INFO L254 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] [2021-12-22 13:41:48,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-22 13:41:48,071 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:48,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:48,072 INFO L85 PathProgramCache]: Analyzing trace with hash 754246134, now seen corresponding path program 8 times [2021-12-22 13:41:48,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:48,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415062471] [2021-12-22 13:41:48,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:48,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:48,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:48,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:48,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:48,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415062471] [2021-12-22 13:41:48,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415062471] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:48,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:48,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:48,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413230116] [2021-12-22 13:41:48,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:48,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:48,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:48,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:48,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:48,177 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:48,178 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 241 transitions, 1350 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:48,178 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:48,178 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:48,178 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:48,404 INFO L129 PetriNetUnfolder]: 108/811 cut-off events. [2021-12-22 13:41:48,404 INFO L130 PetriNetUnfolder]: For 2993/3016 co-relation queries the response was YES. [2021-12-22 13:41:48,408 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2456 conditions, 811 events. 108/811 cut-off events. For 2993/3016 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5311 event pairs, 42 based on Foata normal form. 10/783 useless extension candidates. Maximal degree in co-relation 2386. Up to 156 conditions per place. [2021-12-22 13:41:48,410 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 66 selfloop transitions, 14 changer transitions 27/263 dead transitions. [2021-12-22 13:41:48,410 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 263 transitions, 1805 flow [2021-12-22 13:41:48,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-22 13:41:48,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-22 13:41:48,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2741 transitions. [2021-12-22 13:41:48,412 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8157738095238095 [2021-12-22 13:41:48,412 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2741 transitions. [2021-12-22 13:41:48,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2741 transitions. [2021-12-22 13:41:48,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:48,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2741 transitions. [2021-12-22 13:41:48,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.3125) internal successors, (2741), 16 states have internal predecessors, (2741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:48,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:48,416 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:48,416 INFO L186 Difference]: Start difference. First operand has 296 places, 241 transitions, 1350 flow. Second operand 16 states and 2741 transitions. [2021-12-22 13:41:48,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 263 transitions, 1805 flow [2021-12-22 13:41:48,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 263 transitions, 1680 flow, removed 44 selfloop flow, removed 11 redundant places. [2021-12-22 13:41:48,430 INFO L242 Difference]: Finished difference. Result has 296 places, 225 transitions, 1071 flow [2021-12-22 13:41:48,431 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1071, PETRI_PLACES=296, PETRI_TRANSITIONS=225} [2021-12-22 13:41:48,431 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 109 predicate places. [2021-12-22 13:41:48,431 INFO L470 AbstractCegarLoop]: Abstraction has has 296 places, 225 transitions, 1071 flow [2021-12-22 13:41:48,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:48,432 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:48,432 INFO L254 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] [2021-12-22 13:41:48,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-22 13:41:48,432 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:48,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:48,432 INFO L85 PathProgramCache]: Analyzing trace with hash 260612428, now seen corresponding path program 9 times [2021-12-22 13:41:48,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:48,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840739799] [2021-12-22 13:41:48,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:48,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:48,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:48,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:48,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:48,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840739799] [2021-12-22 13:41:48,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840739799] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:48,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:48,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:48,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148129442] [2021-12-22 13:41:48,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:48,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:48,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:48,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:48,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:48,516 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:48,517 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 225 transitions, 1071 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:48,517 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:48,517 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:48,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:48,742 INFO L129 PetriNetUnfolder]: 113/835 cut-off events. [2021-12-22 13:41:48,743 INFO L130 PetriNetUnfolder]: For 3036/3052 co-relation queries the response was YES. [2021-12-22 13:41:48,748 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2498 conditions, 835 events. 113/835 cut-off events. For 3036/3052 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5550 event pairs, 44 based on Foata normal form. 4/799 useless extension candidates. Maximal degree in co-relation 2432. Up to 158 conditions per place. [2021-12-22 13:41:48,749 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 63 selfloop transitions, 23 changer transitions 24/266 dead transitions. [2021-12-22 13:41:48,749 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 266 transitions, 1809 flow [2021-12-22 13:41:48,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 13:41:48,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-22 13:41:48,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2921 transitions. [2021-12-22 13:41:48,752 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8182072829131652 [2021-12-22 13:41:48,752 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2921 transitions. [2021-12-22 13:41:48,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2921 transitions. [2021-12-22 13:41:48,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:48,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2921 transitions. [2021-12-22 13:41:48,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.8235294117647) internal successors, (2921), 17 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:48,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:48,756 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:48,756 INFO L186 Difference]: Start difference. First operand has 296 places, 225 transitions, 1071 flow. Second operand 17 states and 2921 transitions. [2021-12-22 13:41:48,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 266 transitions, 1809 flow [2021-12-22 13:41:48,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 266 transitions, 1700 flow, removed 17 selfloop flow, removed 14 redundant places. [2021-12-22 13:41:48,769 INFO L242 Difference]: Finished difference. Result has 287 places, 233 transitions, 1223 flow [2021-12-22 13:41:48,769 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1009, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1223, PETRI_PLACES=287, PETRI_TRANSITIONS=233} [2021-12-22 13:41:48,770 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 100 predicate places. [2021-12-22 13:41:48,770 INFO L470 AbstractCegarLoop]: Abstraction has has 287 places, 233 transitions, 1223 flow [2021-12-22 13:41:48,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:48,770 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:48,771 INFO L254 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] [2021-12-22 13:41:48,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-22 13:41:48,771 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:48,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:48,771 INFO L85 PathProgramCache]: Analyzing trace with hash -695288172, now seen corresponding path program 10 times [2021-12-22 13:41:48,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:48,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818380208] [2021-12-22 13:41:48,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:48,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:48,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:48,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:48,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818380208] [2021-12-22 13:41:48,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818380208] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:48,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:48,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:48,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272708967] [2021-12-22 13:41:48,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:48,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:48,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:48,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:48,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:48,855 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:48,856 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 233 transitions, 1223 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:48,856 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:48,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:48,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:49,121 INFO L129 PetriNetUnfolder]: 114/816 cut-off events. [2021-12-22 13:41:49,122 INFO L130 PetriNetUnfolder]: For 2994/3010 co-relation queries the response was YES. [2021-12-22 13:41:49,127 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2515 conditions, 816 events. 114/816 cut-off events. For 2994/3010 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5336 event pairs, 46 based on Foata normal form. 4/779 useless extension candidates. Maximal degree in co-relation 2449. Up to 161 conditions per place. [2021-12-22 13:41:49,128 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 64 selfloop transitions, 25 changer transitions 24/269 dead transitions. [2021-12-22 13:41:49,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 269 transitions, 1939 flow [2021-12-22 13:41:49,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 13:41:49,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-22 13:41:49,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2919 transitions. [2021-12-22 13:41:49,131 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8176470588235294 [2021-12-22 13:41:49,131 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2919 transitions. [2021-12-22 13:41:49,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2919 transitions. [2021-12-22 13:41:49,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:49,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2919 transitions. [2021-12-22 13:41:49,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.7058823529412) internal successors, (2919), 17 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:49,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:49,135 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:49,135 INFO L186 Difference]: Start difference. First operand has 287 places, 233 transitions, 1223 flow. Second operand 17 states and 2919 transitions. [2021-12-22 13:41:49,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 269 transitions, 1939 flow [2021-12-22 13:41:49,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 269 transitions, 1819 flow, removed 36 selfloop flow, removed 9 redundant places. [2021-12-22 13:41:49,150 INFO L242 Difference]: Finished difference. Result has 295 places, 240 transitions, 1341 flow [2021-12-22 13:41:49,150 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1341, PETRI_PLACES=295, PETRI_TRANSITIONS=240} [2021-12-22 13:41:49,151 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 108 predicate places. [2021-12-22 13:41:49,151 INFO L470 AbstractCegarLoop]: Abstraction has has 295 places, 240 transitions, 1341 flow [2021-12-22 13:41:49,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:49,151 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:49,151 INFO L254 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] [2021-12-22 13:41:49,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-22 13:41:49,152 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:49,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:49,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1027010308, now seen corresponding path program 11 times [2021-12-22 13:41:49,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:49,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706881384] [2021-12-22 13:41:49,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:49,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:49,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:49,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:49,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706881384] [2021-12-22 13:41:49,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706881384] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:49,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:49,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:49,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575174920] [2021-12-22 13:41:49,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:49,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:49,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:49,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:49,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:49,240 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:49,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 240 transitions, 1341 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:49,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:49,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:49,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:49,482 INFO L129 PetriNetUnfolder]: 103/800 cut-off events. [2021-12-22 13:41:49,482 INFO L130 PetriNetUnfolder]: For 2562/2578 co-relation queries the response was YES. [2021-12-22 13:41:49,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2313 conditions, 800 events. 103/800 cut-off events. For 2562/2578 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5262 event pairs, 42 based on Foata normal form. 4/766 useless extension candidates. Maximal degree in co-relation 2244. Up to 154 conditions per place. [2021-12-22 13:41:49,487 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 61 selfloop transitions, 14 changer transitions 30/261 dead transitions. [2021-12-22 13:41:49,487 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 261 transitions, 1750 flow [2021-12-22 13:41:49,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 13:41:49,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-22 13:41:49,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3084 transitions. [2021-12-22 13:41:49,508 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8158730158730159 [2021-12-22 13:41:49,508 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3084 transitions. [2021-12-22 13:41:49,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3084 transitions. [2021-12-22 13:41:49,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:49,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3084 transitions. [2021-12-22 13:41:49,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.33333333333334) internal successors, (3084), 18 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:49,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:49,513 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:49,513 INFO L186 Difference]: Start difference. First operand has 295 places, 240 transitions, 1341 flow. Second operand 18 states and 3084 transitions. [2021-12-22 13:41:49,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 261 transitions, 1750 flow [2021-12-22 13:41:49,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 261 transitions, 1662 flow, removed 28 selfloop flow, removed 8 redundant places. [2021-12-22 13:41:49,526 INFO L242 Difference]: Finished difference. Result has 301 places, 226 transitions, 1085 flow [2021-12-22 13:41:49,527 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1263, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1085, PETRI_PLACES=301, PETRI_TRANSITIONS=226} [2021-12-22 13:41:49,527 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 114 predicate places. [2021-12-22 13:41:49,528 INFO L470 AbstractCegarLoop]: Abstraction has has 301 places, 226 transitions, 1085 flow [2021-12-22 13:41:49,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:49,528 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:49,528 INFO L254 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] [2021-12-22 13:41:49,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-22 13:41:49,528 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:49,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:49,529 INFO L85 PathProgramCache]: Analyzing trace with hash 863813416, now seen corresponding path program 12 times [2021-12-22 13:41:49,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:49,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229671463] [2021-12-22 13:41:49,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:49,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:49,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:49,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:49,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229671463] [2021-12-22 13:41:49,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229671463] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:49,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:49,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:49,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391629882] [2021-12-22 13:41:49,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:49,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:49,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:49,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:49,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:49,665 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:49,666 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 226 transitions, 1085 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:49,666 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:49,666 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:49,666 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:49,913 INFO L129 PetriNetUnfolder]: 89/716 cut-off events. [2021-12-22 13:41:49,914 INFO L130 PetriNetUnfolder]: For 2081/2097 co-relation queries the response was YES. [2021-12-22 13:41:49,919 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1964 conditions, 716 events. 89/716 cut-off events. For 2081/2097 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4429 event pairs, 42 based on Foata normal form. 4/683 useless extension candidates. Maximal degree in co-relation 1896. Up to 144 conditions per place. [2021-12-22 13:41:49,920 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 51 selfloop transitions, 3 changer transitions 29/239 dead transitions. [2021-12-22 13:41:49,921 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 239 transitions, 1372 flow [2021-12-22 13:41:49,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 13:41:49,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-22 13:41:49,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3073 transitions. [2021-12-22 13:41:49,923 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.812962962962963 [2021-12-22 13:41:49,923 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3073 transitions. [2021-12-22 13:41:49,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3073 transitions. [2021-12-22 13:41:49,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:49,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3073 transitions. [2021-12-22 13:41:49,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.72222222222223) internal successors, (3073), 18 states have internal predecessors, (3073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:49,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:49,929 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:49,929 INFO L186 Difference]: Start difference. First operand has 301 places, 226 transitions, 1085 flow. Second operand 18 states and 3073 transitions. [2021-12-22 13:41:49,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 239 transitions, 1372 flow [2021-12-22 13:41:49,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 239 transitions, 1255 flow, removed 19 selfloop flow, removed 19 redundant places. [2021-12-22 13:41:49,940 INFO L242 Difference]: Finished difference. Result has 287 places, 206 transitions, 762 flow [2021-12-22 13:41:49,940 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=984, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=762, PETRI_PLACES=287, PETRI_TRANSITIONS=206} [2021-12-22 13:41:49,941 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 100 predicate places. [2021-12-22 13:41:49,941 INFO L470 AbstractCegarLoop]: Abstraction has has 287 places, 206 transitions, 762 flow [2021-12-22 13:41:49,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:49,941 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:49,941 INFO L254 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] [2021-12-22 13:41:49,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-22 13:41:49,942 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:49,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:49,942 INFO L85 PathProgramCache]: Analyzing trace with hash -484428534, now seen corresponding path program 13 times [2021-12-22 13:41:49,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:49,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433817394] [2021-12-22 13:41:49,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:49,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:50,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:50,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:50,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433817394] [2021-12-22 13:41:50,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433817394] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:50,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:50,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:50,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319709551] [2021-12-22 13:41:50,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:50,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:50,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:50,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:50,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:50,030 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:50,031 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 206 transitions, 762 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:50,031 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:50,031 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:50,031 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:50,332 INFO L129 PetriNetUnfolder]: 104/809 cut-off events. [2021-12-22 13:41:50,332 INFO L130 PetriNetUnfolder]: For 2107/2110 co-relation queries the response was YES. [2021-12-22 13:41:50,337 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2177 conditions, 809 events. 104/809 cut-off events. For 2107/2110 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5324 event pairs, 39 based on Foata normal form. 1/775 useless extension candidates. Maximal degree in co-relation 2114. Up to 129 conditions per place. [2021-12-22 13:41:50,339 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 56 selfloop transitions, 20 changer transitions 29/261 dead transitions. [2021-12-22 13:41:50,339 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 261 transitions, 1591 flow [2021-12-22 13:41:50,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-22 13:41:50,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-22 13:41:50,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3762 transitions. [2021-12-22 13:41:50,341 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8142857142857143 [2021-12-22 13:41:50,341 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3762 transitions. [2021-12-22 13:41:50,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3762 transitions. [2021-12-22 13:41:50,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:50,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3762 transitions. [2021-12-22 13:41:50,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.0) internal successors, (3762), 22 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:50,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:50,346 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:50,347 INFO L186 Difference]: Start difference. First operand has 287 places, 206 transitions, 762 flow. Second operand 22 states and 3762 transitions. [2021-12-22 13:41:50,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 261 transitions, 1591 flow [2021-12-22 13:41:50,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 261 transitions, 1442 flow, removed 33 selfloop flow, removed 20 redundant places. [2021-12-22 13:41:50,356 INFO L242 Difference]: Finished difference. Result has 274 places, 218 transitions, 916 flow [2021-12-22 13:41:50,357 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=916, PETRI_PLACES=274, PETRI_TRANSITIONS=218} [2021-12-22 13:41:50,357 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 87 predicate places. [2021-12-22 13:41:50,357 INFO L470 AbstractCegarLoop]: Abstraction has has 274 places, 218 transitions, 916 flow [2021-12-22 13:41:50,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:50,358 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:50,358 INFO L254 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] [2021-12-22 13:41:50,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-22 13:41:50,358 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:50,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:50,359 INFO L85 PathProgramCache]: Analyzing trace with hash 375959954, now seen corresponding path program 14 times [2021-12-22 13:41:50,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:50,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576447842] [2021-12-22 13:41:50,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:50,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:50,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:50,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:50,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576447842] [2021-12-22 13:41:50,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576447842] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:50,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:50,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:50,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776260794] [2021-12-22 13:41:50,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:50,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:50,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:50,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:50,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:50,484 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:50,486 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 218 transitions, 916 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:50,486 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:50,486 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:50,486 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:50,737 INFO L129 PetriNetUnfolder]: 106/799 cut-off events. [2021-12-22 13:41:50,737 INFO L130 PetriNetUnfolder]: For 2143/2146 co-relation queries the response was YES. [2021-12-22 13:41:50,742 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2256 conditions, 799 events. 106/799 cut-off events. For 2143/2146 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5172 event pairs, 41 based on Foata normal form. 1/764 useless extension candidates. Maximal degree in co-relation 2195. Up to 139 conditions per place. [2021-12-22 13:41:50,744 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 54 selfloop transitions, 27 changer transitions 24/261 dead transitions. [2021-12-22 13:41:50,744 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 261 transitions, 1636 flow [2021-12-22 13:41:50,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 13:41:50,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-22 13:41:50,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2914 transitions. [2021-12-22 13:41:50,746 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8162464985994398 [2021-12-22 13:41:50,746 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2914 transitions. [2021-12-22 13:41:50,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2914 transitions. [2021-12-22 13:41:50,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:50,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2914 transitions. [2021-12-22 13:41:50,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.41176470588235) internal successors, (2914), 17 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:50,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:50,750 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:50,750 INFO L186 Difference]: Start difference. First operand has 274 places, 218 transitions, 916 flow. Second operand 17 states and 2914 transitions. [2021-12-22 13:41:50,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 261 transitions, 1636 flow [2021-12-22 13:41:50,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 261 transitions, 1553 flow, removed 35 selfloop flow, removed 11 redundant places. [2021-12-22 13:41:50,760 INFO L242 Difference]: Finished difference. Result has 275 places, 226 transitions, 1075 flow [2021-12-22 13:41:50,761 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1075, PETRI_PLACES=275, PETRI_TRANSITIONS=226} [2021-12-22 13:41:50,761 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 88 predicate places. [2021-12-22 13:41:50,761 INFO L470 AbstractCegarLoop]: Abstraction has has 275 places, 226 transitions, 1075 flow [2021-12-22 13:41:50,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:50,762 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:50,762 INFO L254 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] [2021-12-22 13:41:50,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-22 13:41:50,762 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:50,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:50,763 INFO L85 PathProgramCache]: Analyzing trace with hash -406108784, now seen corresponding path program 15 times [2021-12-22 13:41:50,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:50,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602689322] [2021-12-22 13:41:50,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:50,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:50,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:50,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:50,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602689322] [2021-12-22 13:41:50,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602689322] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:50,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:50,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:50,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990634536] [2021-12-22 13:41:50,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:50,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:50,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:50,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:50,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:50,884 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:50,884 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 226 transitions, 1075 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:50,884 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:50,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:50,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:51,148 INFO L129 PetriNetUnfolder]: 104/816 cut-off events. [2021-12-22 13:41:51,148 INFO L130 PetriNetUnfolder]: For 2435/2438 co-relation queries the response was YES. [2021-12-22 13:41:51,155 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2318 conditions, 816 events. 104/816 cut-off events. For 2435/2438 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5412 event pairs, 39 based on Foata normal form. 1/781 useless extension candidates. Maximal degree in co-relation 2257. Up to 140 conditions per place. [2021-12-22 13:41:51,157 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 56 selfloop transitions, 24 changer transitions 27/263 dead transitions. [2021-12-22 13:41:51,158 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 263 transitions, 1729 flow [2021-12-22 13:41:51,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-22 13:41:51,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-22 13:41:51,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2749 transitions. [2021-12-22 13:41:51,168 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8181547619047619 [2021-12-22 13:41:51,168 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2749 transitions. [2021-12-22 13:41:51,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2749 transitions. [2021-12-22 13:41:51,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:51,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2749 transitions. [2021-12-22 13:41:51,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.8125) internal successors, (2749), 16 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:51,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:51,174 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:51,175 INFO L186 Difference]: Start difference. First operand has 275 places, 226 transitions, 1075 flow. Second operand 16 states and 2749 transitions. [2021-12-22 13:41:51,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 263 transitions, 1729 flow [2021-12-22 13:41:51,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 263 transitions, 1623 flow, removed 26 selfloop flow, removed 9 redundant places. [2021-12-22 13:41:51,190 INFO L242 Difference]: Finished difference. Result has 281 places, 230 transitions, 1147 flow [2021-12-22 13:41:51,190 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=998, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1147, PETRI_PLACES=281, PETRI_TRANSITIONS=230} [2021-12-22 13:41:51,191 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 94 predicate places. [2021-12-22 13:41:51,191 INFO L470 AbstractCegarLoop]: Abstraction has has 281 places, 230 transitions, 1147 flow [2021-12-22 13:41:51,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:51,191 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:51,192 INFO L254 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] [2021-12-22 13:41:51,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-22 13:41:51,192 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:51,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:51,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1088777360, now seen corresponding path program 16 times [2021-12-22 13:41:51,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:51,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578077325] [2021-12-22 13:41:51,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:51,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:51,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:51,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:51,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578077325] [2021-12-22 13:41:51,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578077325] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:51,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:51,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:51,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178249367] [2021-12-22 13:41:51,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:51,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:51,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:51,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:51,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:51,290 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:51,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 230 transitions, 1147 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:51,291 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:51,291 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:51,291 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:51,570 INFO L129 PetriNetUnfolder]: 103/803 cut-off events. [2021-12-22 13:41:51,571 INFO L130 PetriNetUnfolder]: For 2500/2503 co-relation queries the response was YES. [2021-12-22 13:41:51,576 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2298 conditions, 803 events. 103/803 cut-off events. For 2500/2503 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5272 event pairs, 38 based on Foata normal form. 1/768 useless extension candidates. Maximal degree in co-relation 2235. Up to 127 conditions per place. [2021-12-22 13:41:51,578 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 61 selfloop transitions, 25 changer transitions 29/271 dead transitions. [2021-12-22 13:41:51,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 271 transitions, 1937 flow [2021-12-22 13:41:51,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-22 13:41:51,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-22 13:41:51,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3592 transitions. [2021-12-22 13:41:51,582 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8145124716553288 [2021-12-22 13:41:51,582 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3592 transitions. [2021-12-22 13:41:51,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3592 transitions. [2021-12-22 13:41:51,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:51,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3592 transitions. [2021-12-22 13:41:51,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.04761904761904) internal successors, (3592), 21 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:51,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:51,589 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:51,589 INFO L186 Difference]: Start difference. First operand has 281 places, 230 transitions, 1147 flow. Second operand 21 states and 3592 transitions. [2021-12-22 13:41:51,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 271 transitions, 1937 flow [2021-12-22 13:41:51,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 271 transitions, 1810 flow, removed 37 selfloop flow, removed 8 redundant places. [2021-12-22 13:41:51,603 INFO L242 Difference]: Finished difference. Result has 300 places, 233 transitions, 1223 flow [2021-12-22 13:41:51,604 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1223, PETRI_PLACES=300, PETRI_TRANSITIONS=233} [2021-12-22 13:41:51,604 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 113 predicate places. [2021-12-22 13:41:51,604 INFO L470 AbstractCegarLoop]: Abstraction has has 300 places, 233 transitions, 1223 flow [2021-12-22 13:41:51,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:51,605 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:51,605 INFO L254 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] [2021-12-22 13:41:51,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-22 13:41:51,605 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:51,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:51,606 INFO L85 PathProgramCache]: Analyzing trace with hash -714938564, now seen corresponding path program 17 times [2021-12-22 13:41:51,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:51,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960899031] [2021-12-22 13:41:51,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:51,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:51,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:51,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:51,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960899031] [2021-12-22 13:41:51,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960899031] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:51,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:51,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:51,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346039895] [2021-12-22 13:41:51,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:51,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:51,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:51,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:51,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:51,723 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:51,724 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 233 transitions, 1223 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:51,724 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:51,724 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:51,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:51,969 INFO L129 PetriNetUnfolder]: 88/727 cut-off events. [2021-12-22 13:41:51,969 INFO L130 PetriNetUnfolder]: For 2321/2324 co-relation queries the response was YES. [2021-12-22 13:41:51,975 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2036 conditions, 727 events. 88/727 cut-off events. For 2321/2324 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4538 event pairs, 35 based on Foata normal form. 1/693 useless extension candidates. Maximal degree in co-relation 1965. Up to 129 conditions per place. [2021-12-22 13:41:51,977 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 54 selfloop transitions, 13 changer transitions 29/252 dead transitions. [2021-12-22 13:41:51,977 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 252 transitions, 1616 flow [2021-12-22 13:41:51,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 13:41:51,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-22 13:41:51,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3077 transitions. [2021-12-22 13:41:51,979 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.814021164021164 [2021-12-22 13:41:51,980 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3077 transitions. [2021-12-22 13:41:51,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3077 transitions. [2021-12-22 13:41:51,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:51,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3077 transitions. [2021-12-22 13:41:51,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.94444444444446) internal successors, (3077), 18 states have internal predecessors, (3077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:51,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:51,984 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:51,984 INFO L186 Difference]: Start difference. First operand has 300 places, 233 transitions, 1223 flow. Second operand 18 states and 3077 transitions. [2021-12-22 13:41:51,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 252 transitions, 1616 flow [2021-12-22 13:41:51,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 252 transitions, 1502 flow, removed 37 selfloop flow, removed 16 redundant places. [2021-12-22 13:41:51,997 INFO L242 Difference]: Finished difference. Result has 295 places, 218 transitions, 983 flow [2021-12-22 13:41:51,997 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=983, PETRI_PLACES=295, PETRI_TRANSITIONS=218} [2021-12-22 13:41:51,997 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 108 predicate places. [2021-12-22 13:41:51,998 INFO L470 AbstractCegarLoop]: Abstraction has has 295 places, 218 transitions, 983 flow [2021-12-22 13:41:51,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:51,998 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:51,998 INFO L254 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] [2021-12-22 13:41:51,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-22 13:41:51,998 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:51,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:51,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1676233364, now seen corresponding path program 18 times [2021-12-22 13:41:51,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:51,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792655675] [2021-12-22 13:41:51,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:51,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:52,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:52,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:52,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792655675] [2021-12-22 13:41:52,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792655675] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:52,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:52,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:52,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096633857] [2021-12-22 13:41:52,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:52,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:52,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:52,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:52,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:52,119 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:52,136 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 218 transitions, 983 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:52,136 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:52,136 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:52,136 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:52,400 INFO L129 PetriNetUnfolder]: 84/702 cut-off events. [2021-12-22 13:41:52,401 INFO L130 PetriNetUnfolder]: For 2014/2017 co-relation queries the response was YES. [2021-12-22 13:41:52,405 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1905 conditions, 702 events. 84/702 cut-off events. For 2014/2017 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4293 event pairs, 37 based on Foata normal form. 1/667 useless extension candidates. Maximal degree in co-relation 1840. Up to 125 conditions per place. [2021-12-22 13:41:52,406 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 44 selfloop transitions, 21 changer transitions 26/247 dead transitions. [2021-12-22 13:41:52,406 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 247 transitions, 1551 flow [2021-12-22 13:41:52,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 13:41:52,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-22 13:41:52,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3082 transitions. [2021-12-22 13:41:52,408 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8153439153439154 [2021-12-22 13:41:52,408 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3082 transitions. [2021-12-22 13:41:52,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3082 transitions. [2021-12-22 13:41:52,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:52,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3082 transitions. [2021-12-22 13:41:52,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.22222222222223) internal successors, (3082), 18 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:52,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:52,413 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:52,413 INFO L186 Difference]: Start difference. First operand has 295 places, 218 transitions, 983 flow. Second operand 18 states and 3082 transitions. [2021-12-22 13:41:52,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 247 transitions, 1551 flow [2021-12-22 13:41:52,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 247 transitions, 1403 flow, removed 34 selfloop flow, removed 19 redundant places. [2021-12-22 13:41:52,424 INFO L242 Difference]: Finished difference. Result has 275 places, 219 transitions, 987 flow [2021-12-22 13:41:52,424 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=987, PETRI_PLACES=275, PETRI_TRANSITIONS=219} [2021-12-22 13:41:52,424 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 88 predicate places. [2021-12-22 13:41:52,425 INFO L470 AbstractCegarLoop]: Abstraction has has 275 places, 219 transitions, 987 flow [2021-12-22 13:41:52,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:52,425 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:52,425 INFO L254 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] [2021-12-22 13:41:52,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-22 13:41:52,425 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:52,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:52,426 INFO L85 PathProgramCache]: Analyzing trace with hash -287046144, now seen corresponding path program 19 times [2021-12-22 13:41:52,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:52,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613619138] [2021-12-22 13:41:52,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:52,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:52,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:52,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:52,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613619138] [2021-12-22 13:41:52,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613619138] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:52,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:52,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:52,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808746635] [2021-12-22 13:41:52,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:52,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:52,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:52,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:52,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:52,533 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:52,534 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 219 transitions, 987 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:52,534 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:52,534 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:52,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:52,742 INFO L129 PetriNetUnfolder]: 80/674 cut-off events. [2021-12-22 13:41:52,743 INFO L130 PetriNetUnfolder]: For 1330/1333 co-relation queries the response was YES. [2021-12-22 13:41:52,747 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1714 conditions, 674 events. 80/674 cut-off events. For 1330/1333 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4077 event pairs, 36 based on Foata normal form. 1/638 useless extension candidates. Maximal degree in co-relation 1657. Up to 124 conditions per place. [2021-12-22 13:41:52,748 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 43 selfloop transitions, 12 changer transitions 29/240 dead transitions. [2021-12-22 13:41:52,749 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 240 transitions, 1340 flow [2021-12-22 13:41:52,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 13:41:52,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-22 13:41:52,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2911 transitions. [2021-12-22 13:41:52,751 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.815406162464986 [2021-12-22 13:41:52,751 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2911 transitions. [2021-12-22 13:41:52,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2911 transitions. [2021-12-22 13:41:52,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:52,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2911 transitions. [2021-12-22 13:41:52,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.23529411764707) internal successors, (2911), 17 states have internal predecessors, (2911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:52,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:52,757 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:52,757 INFO L186 Difference]: Start difference. First operand has 275 places, 219 transitions, 987 flow. Second operand 17 states and 2911 transitions. [2021-12-22 13:41:52,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 240 transitions, 1340 flow [2021-12-22 13:41:52,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 240 transitions, 1212 flow, removed 31 selfloop flow, removed 11 redundant places. [2021-12-22 13:41:52,766 INFO L242 Difference]: Finished difference. Result has 278 places, 210 transitions, 812 flow [2021-12-22 13:41:52,767 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=812, PETRI_PLACES=278, PETRI_TRANSITIONS=210} [2021-12-22 13:41:52,767 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 91 predicate places. [2021-12-22 13:41:52,767 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 210 transitions, 812 flow [2021-12-22 13:41:52,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:52,768 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:52,768 INFO L254 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] [2021-12-22 13:41:52,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-12-22 13:41:52,769 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:52,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:52,769 INFO L85 PathProgramCache]: Analyzing trace with hash -590390434, now seen corresponding path program 20 times [2021-12-22 13:41:52,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:52,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918289431] [2021-12-22 13:41:52,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:52,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:52,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:52,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:52,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918289431] [2021-12-22 13:41:52,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918289431] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:52,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:52,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:41:52,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971701252] [2021-12-22 13:41:52,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:52,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:41:52,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:52,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:41:52,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:41:52,881 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-12-22 13:41:52,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 210 transitions, 812 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:52,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:52,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-12-22 13:41:52,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:53,067 INFO L129 PetriNetUnfolder]: 66/586 cut-off events. [2021-12-22 13:41:53,067 INFO L130 PetriNetUnfolder]: For 820/823 co-relation queries the response was YES. [2021-12-22 13:41:53,071 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1342 conditions, 586 events. 66/586 cut-off events. For 820/823 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3388 event pairs, 33 based on Foata normal form. 1/552 useless extension candidates. Maximal degree in co-relation 1285. Up to 101 conditions per place. [2021-12-22 13:41:53,072 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 29 selfloop transitions, 0 changer transitions 41/220 dead transitions. [2021-12-22 13:41:53,072 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 220 transitions, 991 flow [2021-12-22 13:41:53,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 13:41:53,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-22 13:41:53,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3069 transitions. [2021-12-22 13:41:53,074 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8119047619047619 [2021-12-22 13:41:53,074 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3069 transitions. [2021-12-22 13:41:53,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3069 transitions. [2021-12-22 13:41:53,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:53,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3069 transitions. [2021-12-22 13:41:53,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.5) internal successors, (3069), 18 states have internal predecessors, (3069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:53,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:53,078 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:53,078 INFO L186 Difference]: Start difference. First operand has 278 places, 210 transitions, 812 flow. Second operand 18 states and 3069 transitions. [2021-12-22 13:41:53,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 220 transitions, 991 flow [2021-12-22 13:41:53,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 220 transitions, 914 flow, removed 16 selfloop flow, removed 17 redundant places. [2021-12-22 13:41:53,085 INFO L242 Difference]: Finished difference. Result has 265 places, 179 transitions, 472 flow [2021-12-22 13:41:53,085 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=472, PETRI_PLACES=265, PETRI_TRANSITIONS=179} [2021-12-22 13:41:53,086 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 78 predicate places. [2021-12-22 13:41:53,086 INFO L470 AbstractCegarLoop]: Abstraction has has 265 places, 179 transitions, 472 flow [2021-12-22 13:41:53,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:53,086 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:53,086 INFO L254 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] [2021-12-22 13:41:53,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-22 13:41:53,087 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:53,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:53,087 INFO L85 PathProgramCache]: Analyzing trace with hash 470272266, now seen corresponding path program 1 times [2021-12-22 13:41:53,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:53,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693454839] [2021-12-22 13:41:53,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:53,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:53,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:53,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:53,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693454839] [2021-12-22 13:41:53,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693454839] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:53,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:53,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 13:41:53,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971545104] [2021-12-22 13:41:53,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:53,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:41:53,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:53,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:41:53,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:41:53,261 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-12-22 13:41:53,262 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 179 transitions, 472 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:53,262 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:53,262 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-12-22 13:41:53,262 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:53,756 INFO L129 PetriNetUnfolder]: 336/1137 cut-off events. [2021-12-22 13:41:53,756 INFO L130 PetriNetUnfolder]: For 2119/2120 co-relation queries the response was YES. [2021-12-22 13:41:53,762 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2965 conditions, 1137 events. 336/1137 cut-off events. For 2119/2120 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7293 event pairs, 109 based on Foata normal form. 1/1077 useless extension candidates. Maximal degree in co-relation 2915. Up to 309 conditions per place. [2021-12-22 13:41:53,764 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 102 selfloop transitions, 30 changer transitions 43/312 dead transitions. [2021-12-22 13:41:53,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 312 transitions, 1656 flow [2021-12-22 13:41:53,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-22 13:41:53,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-12-22 13:41:53,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4659 transitions. [2021-12-22 13:41:53,767 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.765024630541872 [2021-12-22 13:41:53,767 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4659 transitions. [2021-12-22 13:41:53,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4659 transitions. [2021-12-22 13:41:53,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:53,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4659 transitions. [2021-12-22 13:41:53,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.6551724137931) internal successors, (4659), 29 states have internal predecessors, (4659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:53,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:53,774 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:53,774 INFO L186 Difference]: Start difference. First operand has 265 places, 179 transitions, 472 flow. Second operand 29 states and 4659 transitions. [2021-12-22 13:41:53,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 312 transitions, 1656 flow [2021-12-22 13:41:53,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 312 transitions, 1502 flow, removed 77 selfloop flow, removed 11 redundant places. [2021-12-22 13:41:53,781 INFO L242 Difference]: Finished difference. Result has 259 places, 211 transitions, 826 flow [2021-12-22 13:41:53,782 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=826, PETRI_PLACES=259, PETRI_TRANSITIONS=211} [2021-12-22 13:41:53,782 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 72 predicate places. [2021-12-22 13:41:53,782 INFO L470 AbstractCegarLoop]: Abstraction has has 259 places, 211 transitions, 826 flow [2021-12-22 13:41:53,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:53,783 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:53,783 INFO L254 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] [2021-12-22 13:41:53,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-12-22 13:41:53,783 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:53,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:53,783 INFO L85 PathProgramCache]: Analyzing trace with hash 238501890, now seen corresponding path program 2 times [2021-12-22 13:41:53,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:53,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957219205] [2021-12-22 13:41:53,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:53,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:53,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:53,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:53,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957219205] [2021-12-22 13:41:53,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957219205] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:53,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:53,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 13:41:53,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294552235] [2021-12-22 13:41:53,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:53,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:41:53,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:53,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:41:53,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:41:53,906 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-12-22 13:41:53,907 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 211 transitions, 826 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:53,907 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:53,907 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-12-22 13:41:53,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:54,417 INFO L129 PetriNetUnfolder]: 521/1512 cut-off events. [2021-12-22 13:41:54,418 INFO L130 PetriNetUnfolder]: For 5285/5285 co-relation queries the response was YES. [2021-12-22 13:41:54,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5360 conditions, 1512 events. 521/1512 cut-off events. For 5285/5285 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 10267 event pairs, 172 based on Foata normal form. 1/1440 useless extension candidates. Maximal degree in co-relation 5300. Up to 503 conditions per place. [2021-12-22 13:41:54,430 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 137 selfloop transitions, 43 changer transitions 43/360 dead transitions. [2021-12-22 13:41:54,431 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 360 transitions, 2389 flow [2021-12-22 13:41:54,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-22 13:41:54,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-12-22 13:41:54,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4191 transitions. [2021-12-22 13:41:54,433 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7675824175824176 [2021-12-22 13:41:54,433 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4191 transitions. [2021-12-22 13:41:54,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4191 transitions. [2021-12-22 13:41:54,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:54,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4191 transitions. [2021-12-22 13:41:54,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 161.19230769230768) internal successors, (4191), 26 states have internal predecessors, (4191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:54,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:54,440 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:54,440 INFO L186 Difference]: Start difference. First operand has 259 places, 211 transitions, 826 flow. Second operand 26 states and 4191 transitions. [2021-12-22 13:41:54,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 360 transitions, 2389 flow [2021-12-22 13:41:54,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 360 transitions, 2014 flow, removed 182 selfloop flow, removed 13 redundant places. [2021-12-22 13:41:54,458 INFO L242 Difference]: Finished difference. Result has 280 places, 239 transitions, 1102 flow [2021-12-22 13:41:54,458 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1102, PETRI_PLACES=280, PETRI_TRANSITIONS=239} [2021-12-22 13:41:54,459 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 93 predicate places. [2021-12-22 13:41:54,459 INFO L470 AbstractCegarLoop]: Abstraction has has 280 places, 239 transitions, 1102 flow [2021-12-22 13:41:54,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:54,459 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:54,460 INFO L254 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] [2021-12-22 13:41:54,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-12-22 13:41:54,460 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:54,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:54,460 INFO L85 PathProgramCache]: Analyzing trace with hash -750854726, now seen corresponding path program 3 times [2021-12-22 13:41:54,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:54,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940680446] [2021-12-22 13:41:54,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:54,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:54,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:54,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:54,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940680446] [2021-12-22 13:41:54,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940680446] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:54,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:54,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 13:41:54,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709131623] [2021-12-22 13:41:54,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:54,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:41:54,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:54,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:41:54,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:41:54,592 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-12-22 13:41:54,593 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 239 transitions, 1102 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:54,593 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:54,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-12-22 13:41:54,593 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:55,552 INFO L129 PetriNetUnfolder]: 553/1727 cut-off events. [2021-12-22 13:41:55,552 INFO L130 PetriNetUnfolder]: For 7207/7207 co-relation queries the response was YES. [2021-12-22 13:41:55,563 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6575 conditions, 1727 events. 553/1727 cut-off events. For 7207/7207 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 12651 event pairs, 191 based on Foata normal form. 1/1657 useless extension candidates. Maximal degree in co-relation 6504. Up to 494 conditions per place. [2021-12-22 13:41:55,568 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 271 selfloop transitions, 29 changer transitions 94/531 dead transitions. [2021-12-22 13:41:55,568 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 531 transitions, 4332 flow [2021-12-22 13:41:55,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-12-22 13:41:55,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-12-22 13:41:55,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 9250 transitions. [2021-12-22 13:41:55,573 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7594417077175698 [2021-12-22 13:41:55,573 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 9250 transitions. [2021-12-22 13:41:55,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 9250 transitions. [2021-12-22 13:41:55,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:55,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 9250 transitions. [2021-12-22 13:41:55,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 159.48275862068965) internal successors, (9250), 58 states have internal predecessors, (9250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:55,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:55,586 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:55,586 INFO L186 Difference]: Start difference. First operand has 280 places, 239 transitions, 1102 flow. Second operand 58 states and 9250 transitions. [2021-12-22 13:41:55,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 531 transitions, 4332 flow [2021-12-22 13:41:55,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 531 transitions, 3980 flow, removed 175 selfloop flow, removed 11 redundant places. [2021-12-22 13:41:55,614 INFO L242 Difference]: Finished difference. Result has 366 places, 243 transitions, 1265 flow [2021-12-22 13:41:55,614 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=1265, PETRI_PLACES=366, PETRI_TRANSITIONS=243} [2021-12-22 13:41:55,614 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 179 predicate places. [2021-12-22 13:41:55,615 INFO L470 AbstractCegarLoop]: Abstraction has has 366 places, 243 transitions, 1265 flow [2021-12-22 13:41:55,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:55,615 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:55,615 INFO L254 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] [2021-12-22 13:41:55,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-12-22 13:41:55,615 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:55,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:55,616 INFO L85 PathProgramCache]: Analyzing trace with hash 256393280, now seen corresponding path program 4 times [2021-12-22 13:41:55,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:55,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325614675] [2021-12-22 13:41:55,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:55,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:55,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:55,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:55,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325614675] [2021-12-22 13:41:55,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325614675] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:55,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:55,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 13:41:55,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640667634] [2021-12-22 13:41:55,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:55,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:41:55,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:55,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:41:55,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:41:55,771 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-12-22 13:41:55,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 243 transitions, 1265 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:55,771 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:55,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-12-22 13:41:55,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:56,408 INFO L129 PetriNetUnfolder]: 583/1732 cut-off events. [2021-12-22 13:41:56,408 INFO L130 PetriNetUnfolder]: For 15135/15135 co-relation queries the response was YES. [2021-12-22 13:41:56,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8169 conditions, 1732 events. 583/1732 cut-off events. For 15135/15135 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 12341 event pairs, 202 based on Foata normal form. 1/1653 useless extension candidates. Maximal degree in co-relation 8057. Up to 548 conditions per place. [2021-12-22 13:41:56,430 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 181 selfloop transitions, 38 changer transitions 44/400 dead transitions. [2021-12-22 13:41:56,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 400 transitions, 3587 flow [2021-12-22 13:41:56,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-22 13:41:56,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-12-22 13:41:56,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4354 transitions. [2021-12-22 13:41:56,433 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7679012345679013 [2021-12-22 13:41:56,433 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4354 transitions. [2021-12-22 13:41:56,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4354 transitions. [2021-12-22 13:41:56,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:56,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4354 transitions. [2021-12-22 13:41:56,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 161.25925925925927) internal successors, (4354), 27 states have internal predecessors, (4354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:56,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:56,439 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:56,439 INFO L186 Difference]: Start difference. First operand has 366 places, 243 transitions, 1265 flow. Second operand 27 states and 4354 transitions. [2021-12-22 13:41:56,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 400 transitions, 3587 flow [2021-12-22 13:41:56,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 400 transitions, 3296 flow, removed 143 selfloop flow, removed 40 redundant places. [2021-12-22 13:41:56,482 INFO L242 Difference]: Finished difference. Result has 325 places, 267 transitions, 1629 flow [2021-12-22 13:41:56,483 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1159, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1629, PETRI_PLACES=325, PETRI_TRANSITIONS=267} [2021-12-22 13:41:56,483 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 138 predicate places. [2021-12-22 13:41:56,483 INFO L470 AbstractCegarLoop]: Abstraction has has 325 places, 267 transitions, 1629 flow [2021-12-22 13:41:56,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:56,484 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:56,484 INFO L254 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] [2021-12-22 13:41:56,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-12-22 13:41:56,484 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:56,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:56,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1779093400, now seen corresponding path program 1 times [2021-12-22 13:41:56,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:56,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042023438] [2021-12-22 13:41:56,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:56,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:56,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:56,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:56,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042023438] [2021-12-22 13:41:56,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042023438] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:56,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:56,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:41:56,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179696119] [2021-12-22 13:41:56,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:56,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:41:56,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:56,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:41:56,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:41:56,529 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2021-12-22 13:41:56,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 267 transitions, 1629 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:56,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:56,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2021-12-22 13:41:56,530 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:56,711 INFO L129 PetriNetUnfolder]: 258/1465 cut-off events. [2021-12-22 13:41:56,711 INFO L130 PetriNetUnfolder]: For 9685/9778 co-relation queries the response was YES. [2021-12-22 13:41:56,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5398 conditions, 1465 events. 258/1465 cut-off events. For 9685/9778 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 10711 event pairs, 107 based on Foata normal form. 6/1389 useless extension candidates. Maximal degree in co-relation 5305. Up to 118 conditions per place. [2021-12-22 13:41:56,728 INFO L132 encePairwiseOnDemand]: 204/210 looper letters, 15 selfloop transitions, 3 changer transitions 0/273 dead transitions. [2021-12-22 13:41:56,728 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 273 transitions, 1680 flow [2021-12-22 13:41:56,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:41:56,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-22 13:41:56,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2021-12-22 13:41:56,729 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2021-12-22 13:41:56,729 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2021-12-22 13:41:56,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2021-12-22 13:41:56,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:56,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2021-12-22 13:41:56,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:56,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:56,730 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:56,731 INFO L186 Difference]: Start difference. First operand has 325 places, 267 transitions, 1629 flow. Second operand 3 states and 591 transitions. [2021-12-22 13:41:56,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 273 transitions, 1680 flow [2021-12-22 13:41:56,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 273 transitions, 1545 flow, removed 57 selfloop flow, removed 17 redundant places. [2021-12-22 13:41:56,761 INFO L242 Difference]: Finished difference. Result has 300 places, 270 transitions, 1524 flow [2021-12-22 13:41:56,761 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1494, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1524, PETRI_PLACES=300, PETRI_TRANSITIONS=270} [2021-12-22 13:41:56,762 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 113 predicate places. [2021-12-22 13:41:56,762 INFO L470 AbstractCegarLoop]: Abstraction has has 300 places, 270 transitions, 1524 flow [2021-12-22 13:41:56,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:56,762 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:56,762 INFO L254 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] [2021-12-22 13:41:56,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-12-22 13:41:56,763 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:56,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:56,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1934595890, now seen corresponding path program 5 times [2021-12-22 13:41:56,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:56,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082755981] [2021-12-22 13:41:56,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:56,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:56,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:56,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:56,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082755981] [2021-12-22 13:41:56,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082755981] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:56,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:56,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 13:41:56,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745964783] [2021-12-22 13:41:56,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:56,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:41:56,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:56,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:41:56,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:41:56,905 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-12-22 13:41:56,906 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 270 transitions, 1524 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:56,906 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:56,906 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-12-22 13:41:56,906 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:58,069 INFO L129 PetriNetUnfolder]: 964/2916 cut-off events. [2021-12-22 13:41:58,069 INFO L130 PetriNetUnfolder]: For 19450/19450 co-relation queries the response was YES. [2021-12-22 13:41:58,093 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12742 conditions, 2916 events. 964/2916 cut-off events. For 19450/19450 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 22377 event pairs, 402 based on Foata normal form. 1/2797 useless extension candidates. Maximal degree in co-relation 12662. Up to 1086 conditions per place. [2021-12-22 13:41:58,102 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 207 selfloop transitions, 43 changer transitions 84/474 dead transitions. [2021-12-22 13:41:58,102 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 474 transitions, 4619 flow [2021-12-22 13:41:58,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-12-22 13:41:58,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-12-22 13:41:58,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7971 transitions. [2021-12-22 13:41:58,106 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7591428571428571 [2021-12-22 13:41:58,106 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7971 transitions. [2021-12-22 13:41:58,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7971 transitions. [2021-12-22 13:41:58,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:58,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7971 transitions. [2021-12-22 13:41:58,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 159.42) internal successors, (7971), 50 states have internal predecessors, (7971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:58,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:58,118 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:58,118 INFO L186 Difference]: Start difference. First operand has 300 places, 270 transitions, 1524 flow. Second operand 50 states and 7971 transitions. [2021-12-22 13:41:58,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 474 transitions, 4619 flow [2021-12-22 13:41:58,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 474 transitions, 4616 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-22 13:41:58,177 INFO L242 Difference]: Finished difference. Result has 395 places, 289 transitions, 2040 flow [2021-12-22 13:41:58,178 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1521, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=2040, PETRI_PLACES=395, PETRI_TRANSITIONS=289} [2021-12-22 13:41:58,178 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 208 predicate places. [2021-12-22 13:41:58,178 INFO L470 AbstractCegarLoop]: Abstraction has has 395 places, 289 transitions, 2040 flow [2021-12-22 13:41:58,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:58,179 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:58,179 INFO L254 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] [2021-12-22 13:41:58,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-12-22 13:41:58,179 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:58,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:58,180 INFO L85 PathProgramCache]: Analyzing trace with hash 268855270, now seen corresponding path program 1 times [2021-12-22 13:41:58,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:58,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250063221] [2021-12-22 13:41:58,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:58,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:58,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:58,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:58,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250063221] [2021-12-22 13:41:58,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250063221] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:58,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:58,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:41:58,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018475648] [2021-12-22 13:41:58,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:58,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:41:58,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:58,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:41:58,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:41:58,197 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2021-12-22 13:41:58,197 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 289 transitions, 2040 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:58,197 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:58,197 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2021-12-22 13:41:58,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:58,454 INFO L129 PetriNetUnfolder]: 254/1361 cut-off events. [2021-12-22 13:41:58,454 INFO L130 PetriNetUnfolder]: For 17416/17554 co-relation queries the response was YES. [2021-12-22 13:41:58,464 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6245 conditions, 1361 events. 254/1361 cut-off events. For 17416/17554 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9284 event pairs, 100 based on Foata normal form. 9/1307 useless extension candidates. Maximal degree in co-relation 6118. Up to 106 conditions per place. [2021-12-22 13:41:58,468 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 16 selfloop transitions, 5 changer transitions 0/295 dead transitions. [2021-12-22 13:41:58,468 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 295 transitions, 2103 flow [2021-12-22 13:41:58,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:41:58,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-22 13:41:58,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2021-12-22 13:41:58,469 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2021-12-22 13:41:58,469 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2021-12-22 13:41:58,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2021-12-22 13:41:58,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:41:58,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2021-12-22 13:41:58,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:58,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:58,471 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:58,471 INFO L186 Difference]: Start difference. First operand has 395 places, 289 transitions, 2040 flow. Second operand 3 states and 591 transitions. [2021-12-22 13:41:58,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 295 transitions, 2103 flow [2021-12-22 13:41:58,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 295 transitions, 1990 flow, removed 50 selfloop flow, removed 24 redundant places. [2021-12-22 13:41:58,527 INFO L242 Difference]: Finished difference. Result has 337 places, 292 transitions, 1971 flow [2021-12-22 13:41:58,527 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1971, PETRI_PLACES=337, PETRI_TRANSITIONS=292} [2021-12-22 13:41:58,528 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 150 predicate places. [2021-12-22 13:41:58,528 INFO L470 AbstractCegarLoop]: Abstraction has has 337 places, 292 transitions, 1971 flow [2021-12-22 13:41:58,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:58,528 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:41:58,528 INFO L254 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] [2021-12-22 13:41:58,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-12-22 13:41:58,529 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:41:58,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:41:58,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1698434106, now seen corresponding path program 6 times [2021-12-22 13:41:58,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:41:58,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78386591] [2021-12-22 13:41:58,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:41:58,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:41:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:41:58,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:41:58,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:41:58,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78386591] [2021-12-22 13:41:58,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78386591] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:41:58,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:41:58,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 13:41:58,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924952289] [2021-12-22 13:41:58,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:41:58,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:41:58,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:41:58,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:41:58,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:41:58,667 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-12-22 13:41:58,668 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 292 transitions, 1971 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:41:58,668 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:41:58,668 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-12-22 13:41:58,668 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:41:59,997 INFO L129 PetriNetUnfolder]: 787/2591 cut-off events. [2021-12-22 13:41:59,998 INFO L130 PetriNetUnfolder]: For 30444/30466 co-relation queries the response was YES. [2021-12-22 13:42:00,023 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13366 conditions, 2591 events. 787/2591 cut-off events. For 30444/30466 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 19430 event pairs, 367 based on Foata normal form. 4/2507 useless extension candidates. Maximal degree in co-relation 13261. Up to 841 conditions per place. [2021-12-22 13:42:00,032 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 217 selfloop transitions, 40 changer transitions 84/484 dead transitions. [2021-12-22 13:42:00,032 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 484 transitions, 5777 flow [2021-12-22 13:42:00,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-12-22 13:42:00,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-12-22 13:42:00,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 8287 transitions. [2021-12-22 13:42:00,037 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7588827838827839 [2021-12-22 13:42:00,037 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 8287 transitions. [2021-12-22 13:42:00,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 8287 transitions. [2021-12-22 13:42:00,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:00,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 8287 transitions. [2021-12-22 13:42:00,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 159.3653846153846) internal successors, (8287), 52 states have internal predecessors, (8287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:00,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:00,182 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:00,182 INFO L186 Difference]: Start difference. First operand has 337 places, 292 transitions, 1971 flow. Second operand 52 states and 8287 transitions. [2021-12-22 13:42:00,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 484 transitions, 5777 flow [2021-12-22 13:42:00,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 484 transitions, 5761 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-12-22 13:42:00,281 INFO L242 Difference]: Finished difference. Result has 430 places, 312 transitions, 2485 flow [2021-12-22 13:42:00,282 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1955, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=2485, PETRI_PLACES=430, PETRI_TRANSITIONS=312} [2021-12-22 13:42:00,282 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 243 predicate places. [2021-12-22 13:42:00,282 INFO L470 AbstractCegarLoop]: Abstraction has has 430 places, 312 transitions, 2485 flow [2021-12-22 13:42:00,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:00,283 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:00,283 INFO L254 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] [2021-12-22 13:42:00,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-12-22 13:42:00,283 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:00,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:00,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1987803174, now seen corresponding path program 7 times [2021-12-22 13:42:00,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:00,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947316973] [2021-12-22 13:42:00,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:00,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:00,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:00,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:00,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947316973] [2021-12-22 13:42:00,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947316973] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:00,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:00,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 13:42:00,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562879353] [2021-12-22 13:42:00,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:00,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:42:00,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:00,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:42:00,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:42:00,436 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-12-22 13:42:00,452 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 312 transitions, 2485 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:00,452 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:00,452 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-12-22 13:42:00,453 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:01,731 INFO L129 PetriNetUnfolder]: 798/2638 cut-off events. [2021-12-22 13:42:01,731 INFO L130 PetriNetUnfolder]: For 59883/59905 co-relation queries the response was YES. [2021-12-22 13:42:01,769 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16409 conditions, 2638 events. 798/2638 cut-off events. For 59883/59905 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 19934 event pairs, 424 based on Foata normal form. 1/2538 useless extension candidates. Maximal degree in co-relation 16260. Up to 871 conditions per place. [2021-12-22 13:42:01,779 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 225 selfloop transitions, 42 changer transitions 84/494 dead transitions. [2021-12-22 13:42:01,779 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 494 transitions, 7503 flow [2021-12-22 13:42:01,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-12-22 13:42:01,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-12-22 13:42:01,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8132 transitions. [2021-12-22 13:42:01,783 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7592903828197946 [2021-12-22 13:42:01,783 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 8132 transitions. [2021-12-22 13:42:01,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 8132 transitions. [2021-12-22 13:42:01,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:01,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 8132 transitions. [2021-12-22 13:42:01,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 159.45098039215685) internal successors, (8132), 51 states have internal predecessors, (8132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:01,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 210.0) internal successors, (10920), 52 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:01,982 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 210.0) internal successors, (10920), 52 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:01,982 INFO L186 Difference]: Start difference. First operand has 430 places, 312 transitions, 2485 flow. Second operand 51 states and 8132 transitions. [2021-12-22 13:42:01,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 494 transitions, 7503 flow [2021-12-22 13:42:02,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 494 transitions, 6335 flow, removed 584 selfloop flow, removed 35 redundant places. [2021-12-22 13:42:02,211 INFO L242 Difference]: Finished difference. Result has 452 places, 330 transitions, 2951 flow [2021-12-22 13:42:02,212 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2353, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=2951, PETRI_PLACES=452, PETRI_TRANSITIONS=330} [2021-12-22 13:42:02,212 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 265 predicate places. [2021-12-22 13:42:02,212 INFO L470 AbstractCegarLoop]: Abstraction has has 452 places, 330 transitions, 2951 flow [2021-12-22 13:42:02,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:02,213 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:02,213 INFO L254 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] [2021-12-22 13:42:02,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-12-22 13:42:02,213 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:02,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:02,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1981189114, now seen corresponding path program 8 times [2021-12-22 13:42:02,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:02,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514989438] [2021-12-22 13:42:02,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:02,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:02,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:02,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:02,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514989438] [2021-12-22 13:42:02,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514989438] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:02,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:02,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 13:42:02,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743982123] [2021-12-22 13:42:02,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:02,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:42:02,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:02,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:42:02,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:42:02,382 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-12-22 13:42:02,383 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 330 transitions, 2951 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:02,383 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:02,383 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-12-22 13:42:02,383 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:03,775 INFO L129 PetriNetUnfolder]: 789/2620 cut-off events. [2021-12-22 13:42:03,776 INFO L130 PetriNetUnfolder]: For 62265/62287 co-relation queries the response was YES. [2021-12-22 13:42:03,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16651 conditions, 2620 events. 789/2620 cut-off events. For 62265/62287 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 19913 event pairs, 391 based on Foata normal form. 1/2518 useless extension candidates. Maximal degree in co-relation 16489. Up to 900 conditions per place. [2021-12-22 13:42:03,828 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 274 selfloop transitions, 74 changer transitions 87/578 dead transitions. [2021-12-22 13:42:03,828 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 578 transitions, 9606 flow [2021-12-22 13:42:03,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-12-22 13:42:03,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-12-22 13:42:03,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7962 transitions. [2021-12-22 13:42:03,834 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7582857142857143 [2021-12-22 13:42:03,834 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7962 transitions. [2021-12-22 13:42:03,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7962 transitions. [2021-12-22 13:42:03,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:03,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7962 transitions. [2021-12-22 13:42:03,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 159.24) internal successors, (7962), 50 states have internal predecessors, (7962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:03,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:03,849 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:03,849 INFO L186 Difference]: Start difference. First operand has 452 places, 330 transitions, 2951 flow. Second operand 50 states and 7962 transitions. [2021-12-22 13:42:03,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 578 transitions, 9606 flow [2021-12-22 13:42:04,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 578 transitions, 8511 flow, removed 532 selfloop flow, removed 38 redundant places. [2021-12-22 13:42:04,062 INFO L242 Difference]: Finished difference. Result has 469 places, 360 transitions, 3861 flow [2021-12-22 13:42:04,063 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2757, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=3861, PETRI_PLACES=469, PETRI_TRANSITIONS=360} [2021-12-22 13:42:04,063 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 282 predicate places. [2021-12-22 13:42:04,063 INFO L470 AbstractCegarLoop]: Abstraction has has 469 places, 360 transitions, 3861 flow [2021-12-22 13:42:04,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:04,064 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:04,064 INFO L254 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] [2021-12-22 13:42:04,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-12-22 13:42:04,064 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:04,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:04,065 INFO L85 PathProgramCache]: Analyzing trace with hash 254084890, now seen corresponding path program 9 times [2021-12-22 13:42:04,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:04,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960348823] [2021-12-22 13:42:04,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:04,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:04,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:04,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:04,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:04,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960348823] [2021-12-22 13:42:04,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960348823] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:04,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:04,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 13:42:04,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647674396] [2021-12-22 13:42:04,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:04,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:42:04,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:04,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:42:04,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:42:04,206 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-12-22 13:42:04,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 360 transitions, 3861 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:04,207 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:04,208 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-12-22 13:42:04,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:05,910 INFO L129 PetriNetUnfolder]: 840/2761 cut-off events. [2021-12-22 13:42:05,910 INFO L130 PetriNetUnfolder]: For 58838/58868 co-relation queries the response was YES. [2021-12-22 13:42:05,948 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17523 conditions, 2761 events. 840/2761 cut-off events. For 58838/58868 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 21386 event pairs, 331 based on Foata normal form. 13/2679 useless extension candidates. Maximal degree in co-relation 17353. Up to 898 conditions per place. [2021-12-22 13:42:05,958 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 270 selfloop transitions, 100 changer transitions 86/599 dead transitions. [2021-12-22 13:42:05,958 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 599 transitions, 9427 flow [2021-12-22 13:42:05,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-12-22 13:42:05,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-12-22 13:42:05,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 8596 transitions. [2021-12-22 13:42:05,962 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7580246913580246 [2021-12-22 13:42:05,962 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 8596 transitions. [2021-12-22 13:42:05,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 8596 transitions. [2021-12-22 13:42:05,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:05,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 8596 transitions. [2021-12-22 13:42:05,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 159.1851851851852) internal successors, (8596), 54 states have internal predecessors, (8596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:05,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:05,974 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:05,974 INFO L186 Difference]: Start difference. First operand has 469 places, 360 transitions, 3861 flow. Second operand 54 states and 8596 transitions. [2021-12-22 13:42:05,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 599 transitions, 9427 flow [2021-12-22 13:42:06,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 599 transitions, 8355 flow, removed 486 selfloop flow, removed 33 redundant places. [2021-12-22 13:42:06,246 INFO L242 Difference]: Finished difference. Result has 494 places, 383 transitions, 4122 flow [2021-12-22 13:42:06,246 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3365, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=4122, PETRI_PLACES=494, PETRI_TRANSITIONS=383} [2021-12-22 13:42:06,247 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 307 predicate places. [2021-12-22 13:42:06,247 INFO L470 AbstractCegarLoop]: Abstraction has has 494 places, 383 transitions, 4122 flow [2021-12-22 13:42:06,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:06,248 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:06,248 INFO L254 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] [2021-12-22 13:42:06,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-12-22 13:42:06,248 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:06,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:06,249 INFO L85 PathProgramCache]: Analyzing trace with hash -38496598, now seen corresponding path program 10 times [2021-12-22 13:42:06,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:06,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928933678] [2021-12-22 13:42:06,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:06,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:06,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:06,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:06,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928933678] [2021-12-22 13:42:06,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928933678] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:06,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:06,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 13:42:06,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456559912] [2021-12-22 13:42:06,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:06,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:42:06,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:06,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:42:06,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:42:06,375 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-12-22 13:42:06,376 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 383 transitions, 4122 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:06,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:06,376 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-12-22 13:42:06,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:08,044 INFO L129 PetriNetUnfolder]: 835/2749 cut-off events. [2021-12-22 13:42:08,044 INFO L130 PetriNetUnfolder]: For 55420/55459 co-relation queries the response was YES. [2021-12-22 13:42:08,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17415 conditions, 2749 events. 835/2749 cut-off events. For 55420/55459 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 21226 event pairs, 352 based on Foata normal form. 13/2662 useless extension candidates. Maximal degree in co-relation 17233. Up to 890 conditions per place. [2021-12-22 13:42:08,086 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 252 selfloop transitions, 94 changer transitions 87/576 dead transitions. [2021-12-22 13:42:08,086 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 576 transitions, 8826 flow [2021-12-22 13:42:08,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-12-22 13:42:08,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-12-22 13:42:08,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 8442 transitions. [2021-12-22 13:42:08,091 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7584905660377359 [2021-12-22 13:42:08,091 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 8442 transitions. [2021-12-22 13:42:08,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 8442 transitions. [2021-12-22 13:42:08,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:08,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 8442 transitions. [2021-12-22 13:42:08,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 159.28301886792454) internal successors, (8442), 53 states have internal predecessors, (8442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:08,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:08,103 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:08,103 INFO L186 Difference]: Start difference. First operand has 494 places, 383 transitions, 4122 flow. Second operand 53 states and 8442 transitions. [2021-12-22 13:42:08,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 576 transitions, 8826 flow [2021-12-22 13:42:08,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 576 transitions, 8197 flow, removed 293 selfloop flow, removed 43 redundant places. [2021-12-22 13:42:08,332 INFO L242 Difference]: Finished difference. Result has 504 places, 390 transitions, 4463 flow [2021-12-22 13:42:08,333 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3951, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=4463, PETRI_PLACES=504, PETRI_TRANSITIONS=390} [2021-12-22 13:42:08,333 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 317 predicate places. [2021-12-22 13:42:08,333 INFO L470 AbstractCegarLoop]: Abstraction has has 504 places, 390 transitions, 4463 flow [2021-12-22 13:42:08,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:08,334 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:08,334 INFO L254 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] [2021-12-22 13:42:08,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-12-22 13:42:08,334 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:08,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:08,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1573113274, now seen corresponding path program 11 times [2021-12-22 13:42:08,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:08,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329776259] [2021-12-22 13:42:08,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:08,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:08,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:08,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:08,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329776259] [2021-12-22 13:42:08,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329776259] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:08,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:08,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 13:42:08,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005093235] [2021-12-22 13:42:08,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:08,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:42:08,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:08,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:42:08,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:42:08,448 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-12-22 13:42:08,449 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 390 transitions, 4463 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:08,449 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:08,449 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-12-22 13:42:08,449 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:09,685 INFO L129 PetriNetUnfolder]: 818/2661 cut-off events. [2021-12-22 13:42:09,685 INFO L130 PetriNetUnfolder]: For 54849/54891 co-relation queries the response was YES. [2021-12-22 13:42:09,715 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17117 conditions, 2661 events. 818/2661 cut-off events. For 54849/54891 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 20252 event pairs, 349 based on Foata normal form. 13/2570 useless extension candidates. Maximal degree in co-relation 16934. Up to 920 conditions per place. [2021-12-22 13:42:09,725 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 239 selfloop transitions, 101 changer transitions 65/548 dead transitions. [2021-12-22 13:42:09,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 548 transitions, 8380 flow [2021-12-22 13:42:09,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-22 13:42:09,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-12-22 13:42:09,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5442 transitions. [2021-12-22 13:42:09,728 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7621848739495798 [2021-12-22 13:42:09,728 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5442 transitions. [2021-12-22 13:42:09,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5442 transitions. [2021-12-22 13:42:09,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:09,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5442 transitions. [2021-12-22 13:42:09,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 160.05882352941177) internal successors, (5442), 34 states have internal predecessors, (5442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:09,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:09,736 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:09,737 INFO L186 Difference]: Start difference. First operand has 504 places, 390 transitions, 4463 flow. Second operand 34 states and 5442 transitions. [2021-12-22 13:42:09,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 548 transitions, 8380 flow [2021-12-22 13:42:09,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 548 transitions, 7727 flow, removed 280 selfloop flow, removed 39 redundant places. [2021-12-22 13:42:09,975 INFO L242 Difference]: Finished difference. Result has 476 places, 398 transitions, 4664 flow [2021-12-22 13:42:09,976 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4231, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=4664, PETRI_PLACES=476, PETRI_TRANSITIONS=398} [2021-12-22 13:42:09,976 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 289 predicate places. [2021-12-22 13:42:09,976 INFO L470 AbstractCegarLoop]: Abstraction has has 476 places, 398 transitions, 4664 flow [2021-12-22 13:42:09,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:09,977 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:09,977 INFO L254 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] [2021-12-22 13:42:09,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-12-22 13:42:09,977 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:09,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:09,977 INFO L85 PathProgramCache]: Analyzing trace with hash -2080920916, now seen corresponding path program 12 times [2021-12-22 13:42:09,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:09,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486482953] [2021-12-22 13:42:09,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:09,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:10,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:10,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:10,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486482953] [2021-12-22 13:42:10,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486482953] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:10,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:10,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 13:42:10,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135300707] [2021-12-22 13:42:10,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:10,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:42:10,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:10,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:42:10,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:42:10,135 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-12-22 13:42:10,136 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 398 transitions, 4664 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:10,136 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:10,136 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-12-22 13:42:10,136 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:11,653 INFO L129 PetriNetUnfolder]: 816/2636 cut-off events. [2021-12-22 13:42:11,653 INFO L130 PetriNetUnfolder]: For 49346/49379 co-relation queries the response was YES. [2021-12-22 13:42:11,678 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16751 conditions, 2636 events. 816/2636 cut-off events. For 49346/49379 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 20184 event pairs, 360 based on Foata normal form. 9/2539 useless extension candidates. Maximal degree in co-relation 16586. Up to 920 conditions per place. [2021-12-22 13:42:11,687 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 263 selfloop transitions, 110 changer transitions 78/594 dead transitions. [2021-12-22 13:42:11,687 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 594 transitions, 9738 flow [2021-12-22 13:42:11,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-12-22 13:42:11,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-12-22 13:42:11,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 6702 transitions. [2021-12-22 13:42:11,690 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7598639455782313 [2021-12-22 13:42:11,690 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 6702 transitions. [2021-12-22 13:42:11,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 6702 transitions. [2021-12-22 13:42:11,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:11,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 6702 transitions. [2021-12-22 13:42:11,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 159.57142857142858) internal successors, (6702), 42 states have internal predecessors, (6702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:11,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:11,699 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:11,699 INFO L186 Difference]: Start difference. First operand has 476 places, 398 transitions, 4664 flow. Second operand 42 states and 6702 transitions. [2021-12-22 13:42:11,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 594 transitions, 9738 flow [2021-12-22 13:42:11,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 594 transitions, 9249 flow, removed 101 selfloop flow, removed 25 redundant places. [2021-12-22 13:42:11,902 INFO L242 Difference]: Finished difference. Result has 507 places, 425 transitions, 5523 flow [2021-12-22 13:42:11,902 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4380, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=5523, PETRI_PLACES=507, PETRI_TRANSITIONS=425} [2021-12-22 13:42:11,904 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 320 predicate places. [2021-12-22 13:42:11,904 INFO L470 AbstractCegarLoop]: Abstraction has has 507 places, 425 transitions, 5523 flow [2021-12-22 13:42:11,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:11,905 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:11,905 INFO L254 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] [2021-12-22 13:42:11,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-12-22 13:42:11,905 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:11,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:11,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1464945574, now seen corresponding path program 13 times [2021-12-22 13:42:11,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:11,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793553946] [2021-12-22 13:42:11,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:11,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:12,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:12,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:12,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793553946] [2021-12-22 13:42:12,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793553946] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:12,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:12,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 13:42:12,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674176603] [2021-12-22 13:42:12,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:12,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:42:12,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:12,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:42:12,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:42:12,095 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-12-22 13:42:12,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 425 transitions, 5523 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:12,096 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:12,096 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-12-22 13:42:12,096 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:13,716 INFO L129 PetriNetUnfolder]: 811/2813 cut-off events. [2021-12-22 13:42:13,717 INFO L130 PetriNetUnfolder]: For 54173/54203 co-relation queries the response was YES. [2021-12-22 13:42:13,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17423 conditions, 2813 events. 811/2813 cut-off events. For 54173/54203 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 21827 event pairs, 274 based on Foata normal form. 1/2736 useless extension candidates. Maximal degree in co-relation 17242. Up to 706 conditions per place. [2021-12-22 13:42:13,760 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 437 selfloop transitions, 108 changer transitions 108/794 dead transitions. [2021-12-22 13:42:13,760 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 794 transitions, 13148 flow [2021-12-22 13:42:13,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-12-22 13:42:13,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-12-22 13:42:13,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 9236 transitions. [2021-12-22 13:42:13,765 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7582922824302135 [2021-12-22 13:42:13,765 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 9236 transitions. [2021-12-22 13:42:13,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 9236 transitions. [2021-12-22 13:42:13,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:13,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 9236 transitions. [2021-12-22 13:42:13,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 159.24137931034483) internal successors, (9236), 58 states have internal predecessors, (9236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:13,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:13,777 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:13,778 INFO L186 Difference]: Start difference. First operand has 507 places, 425 transitions, 5523 flow. Second operand 58 states and 9236 transitions. [2021-12-22 13:42:13,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 794 transitions, 13148 flow [2021-12-22 13:42:14,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 794 transitions, 12239 flow, removed 295 selfloop flow, removed 29 redundant places. [2021-12-22 13:42:14,221 INFO L242 Difference]: Finished difference. Result has 555 places, 425 transitions, 5484 flow [2021-12-22 13:42:14,221 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4954, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=5484, PETRI_PLACES=555, PETRI_TRANSITIONS=425} [2021-12-22 13:42:14,222 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 368 predicate places. [2021-12-22 13:42:14,222 INFO L470 AbstractCegarLoop]: Abstraction has has 555 places, 425 transitions, 5484 flow [2021-12-22 13:42:14,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:14,223 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:14,223 INFO L254 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] [2021-12-22 13:42:14,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-12-22 13:42:14,223 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:14,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:14,223 INFO L85 PathProgramCache]: Analyzing trace with hash 2053203194, now seen corresponding path program 14 times [2021-12-22 13:42:14,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:14,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869416951] [2021-12-22 13:42:14,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:14,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:14,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:14,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:14,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:14,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869416951] [2021-12-22 13:42:14,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869416951] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:14,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:14,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 13:42:14,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324037393] [2021-12-22 13:42:14,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:14,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:42:14,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:14,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:42:14,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:42:14,347 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-12-22 13:42:14,348 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 425 transitions, 5484 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:14,348 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:14,348 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-12-22 13:42:14,348 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:15,766 INFO L129 PetriNetUnfolder]: 803/2774 cut-off events. [2021-12-22 13:42:15,767 INFO L130 PetriNetUnfolder]: For 57037/57067 co-relation queries the response was YES. [2021-12-22 13:42:15,887 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18037 conditions, 2774 events. 803/2774 cut-off events. For 57037/57067 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 21413 event pairs, 341 based on Foata normal form. 13/2695 useless extension candidates. Maximal degree in co-relation 17833. Up to 936 conditions per place. [2021-12-22 13:42:15,897 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 303 selfloop transitions, 128 changer transitions 80/652 dead transitions. [2021-12-22 13:42:15,897 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 652 transitions, 11076 flow [2021-12-22 13:42:15,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-12-22 13:42:15,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-12-22 13:42:15,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7334 transitions. [2021-12-22 13:42:15,901 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7592132505175984 [2021-12-22 13:42:15,901 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7334 transitions. [2021-12-22 13:42:15,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7334 transitions. [2021-12-22 13:42:15,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:15,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7334 transitions. [2021-12-22 13:42:15,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.43478260869566) internal successors, (7334), 46 states have internal predecessors, (7334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:15,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:15,911 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:15,911 INFO L186 Difference]: Start difference. First operand has 555 places, 425 transitions, 5484 flow. Second operand 46 states and 7334 transitions. [2021-12-22 13:42:15,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 652 transitions, 11076 flow [2021-12-22 13:42:16,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 652 transitions, 10613 flow, removed 76 selfloop flow, removed 51 redundant places. [2021-12-22 13:42:16,193 INFO L242 Difference]: Finished difference. Result has 533 places, 432 transitions, 5805 flow [2021-12-22 13:42:16,194 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5264, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=5805, PETRI_PLACES=533, PETRI_TRANSITIONS=432} [2021-12-22 13:42:16,194 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 346 predicate places. [2021-12-22 13:42:16,195 INFO L470 AbstractCegarLoop]: Abstraction has has 533 places, 432 transitions, 5805 flow [2021-12-22 13:42:16,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:16,195 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:16,195 INFO L254 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] [2021-12-22 13:42:16,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-12-22 13:42:16,196 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:16,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:16,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1175875342, now seen corresponding path program 15 times [2021-12-22 13:42:16,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:16,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84121179] [2021-12-22 13:42:16,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:16,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:16,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:16,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:16,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84121179] [2021-12-22 13:42:16,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84121179] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:16,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:16,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 13:42:16,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174653800] [2021-12-22 13:42:16,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:16,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:42:16,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:16,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:42:16,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:42:16,339 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-12-22 13:42:16,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 432 transitions, 5805 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:16,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:16,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-12-22 13:42:16,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:17,540 INFO L129 PetriNetUnfolder]: 799/2722 cut-off events. [2021-12-22 13:42:17,540 INFO L130 PetriNetUnfolder]: For 57567/57597 co-relation queries the response was YES. [2021-12-22 13:42:17,577 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18013 conditions, 2722 events. 799/2722 cut-off events. For 57567/57597 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 20765 event pairs, 346 based on Foata normal form. 13/2640 useless extension candidates. Maximal degree in co-relation 17823. Up to 956 conditions per place. [2021-12-22 13:42:17,586 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 287 selfloop transitions, 138 changer transitions 59/625 dead transitions. [2021-12-22 13:42:17,586 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 625 transitions, 10713 flow [2021-12-22 13:42:17,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-22 13:42:17,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-12-22 13:42:17,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4811 transitions. [2021-12-22 13:42:17,589 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7636507936507937 [2021-12-22 13:42:17,589 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4811 transitions. [2021-12-22 13:42:17,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4811 transitions. [2021-12-22 13:42:17,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:17,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4811 transitions. [2021-12-22 13:42:17,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.36666666666667) internal successors, (4811), 30 states have internal predecessors, (4811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:17,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:17,595 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:17,595 INFO L186 Difference]: Start difference. First operand has 533 places, 432 transitions, 5805 flow. Second operand 30 states and 4811 transitions. [2021-12-22 13:42:17,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 625 transitions, 10713 flow [2021-12-22 13:42:17,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 625 transitions, 10281 flow, removed 166 selfloop flow, removed 30 redundant places. [2021-12-22 13:42:17,956 INFO L242 Difference]: Finished difference. Result has 514 places, 449 transitions, 6384 flow [2021-12-22 13:42:17,956 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5628, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=6384, PETRI_PLACES=514, PETRI_TRANSITIONS=449} [2021-12-22 13:42:17,957 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 327 predicate places. [2021-12-22 13:42:17,957 INFO L470 AbstractCegarLoop]: Abstraction has has 514 places, 449 transitions, 6384 flow [2021-12-22 13:42:17,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:17,957 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:17,958 INFO L254 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] [2021-12-22 13:42:17,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-12-22 13:42:17,958 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:17,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:17,958 INFO L85 PathProgramCache]: Analyzing trace with hash -200612388, now seen corresponding path program 16 times [2021-12-22 13:42:17,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:17,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897725661] [2021-12-22 13:42:17,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:17,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:18,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:18,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:18,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897725661] [2021-12-22 13:42:18,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897725661] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:18,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:18,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 13:42:18,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788537450] [2021-12-22 13:42:18,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:18,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:42:18,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:18,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:42:18,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:42:18,076 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-12-22 13:42:18,077 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 449 transitions, 6384 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:18,077 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:18,077 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-12-22 13:42:18,077 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:19,311 INFO L129 PetriNetUnfolder]: 786/2795 cut-off events. [2021-12-22 13:42:19,312 INFO L130 PetriNetUnfolder]: For 57686/57723 co-relation queries the response was YES. [2021-12-22 13:42:19,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17847 conditions, 2795 events. 786/2795 cut-off events. For 57686/57723 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 21651 event pairs, 343 based on Foata normal form. 17/2720 useless extension candidates. Maximal degree in co-relation 17670. Up to 940 conditions per place. [2021-12-22 13:42:19,356 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 291 selfloop transitions, 127 changer transitions 70/629 dead transitions. [2021-12-22 13:42:19,356 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 629 transitions, 10852 flow [2021-12-22 13:42:19,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-22 13:42:19,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-12-22 13:42:19,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6067 transitions. [2021-12-22 13:42:19,359 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7602756892230577 [2021-12-22 13:42:19,359 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6067 transitions. [2021-12-22 13:42:19,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6067 transitions. [2021-12-22 13:42:19,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:19,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6067 transitions. [2021-12-22 13:42:19,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.6578947368421) internal successors, (6067), 38 states have internal predecessors, (6067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:19,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:19,368 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:19,368 INFO L186 Difference]: Start difference. First operand has 514 places, 449 transitions, 6384 flow. Second operand 38 states and 6067 transitions. [2021-12-22 13:42:19,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 629 transitions, 10852 flow [2021-12-22 13:42:19,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 629 transitions, 10594 flow, removed 99 selfloop flow, removed 11 redundant places. [2021-12-22 13:42:19,626 INFO L242 Difference]: Finished difference. Result has 548 places, 444 transitions, 6472 flow [2021-12-22 13:42:19,626 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6227, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=6472, PETRI_PLACES=548, PETRI_TRANSITIONS=444} [2021-12-22 13:42:19,626 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 361 predicate places. [2021-12-22 13:42:19,626 INFO L470 AbstractCegarLoop]: Abstraction has has 548 places, 444 transitions, 6472 flow [2021-12-22 13:42:19,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:19,627 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:19,627 INFO L254 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] [2021-12-22 13:42:19,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-12-22 13:42:19,627 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:19,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:19,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1043493350, now seen corresponding path program 17 times [2021-12-22 13:42:19,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:19,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468124400] [2021-12-22 13:42:19,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:19,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:19,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:19,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:19,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468124400] [2021-12-22 13:42:19,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468124400] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:19,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:19,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 13:42:19,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112847982] [2021-12-22 13:42:19,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:19,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:42:19,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:19,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:42:19,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:42:19,742 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-12-22 13:42:19,743 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 444 transitions, 6472 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:19,743 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:19,743 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-12-22 13:42:19,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:20,806 INFO L129 PetriNetUnfolder]: 750/2595 cut-off events. [2021-12-22 13:42:20,806 INFO L130 PetriNetUnfolder]: For 57894/57924 co-relation queries the response was YES. [2021-12-22 13:42:20,844 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17213 conditions, 2595 events. 750/2595 cut-off events. For 57894/57924 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 19476 event pairs, 338 based on Foata normal form. 13/2517 useless extension candidates. Maximal degree in co-relation 17022. Up to 930 conditions per place. [2021-12-22 13:42:20,868 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 272 selfloop transitions, 96 changer transitions 62/571 dead transitions. [2021-12-22 13:42:20,869 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 571 transitions, 9638 flow [2021-12-22 13:42:20,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-22 13:42:20,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-12-22 13:42:20,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4169 transitions. [2021-12-22 13:42:20,871 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635531135531135 [2021-12-22 13:42:20,871 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4169 transitions. [2021-12-22 13:42:20,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4169 transitions. [2021-12-22 13:42:20,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:20,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4169 transitions. [2021-12-22 13:42:20,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 160.34615384615384) internal successors, (4169), 26 states have internal predecessors, (4169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:20,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:20,877 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:20,877 INFO L186 Difference]: Start difference. First operand has 548 places, 444 transitions, 6472 flow. Second operand 26 states and 4169 transitions. [2021-12-22 13:42:20,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 571 transitions, 9638 flow [2021-12-22 13:42:21,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 571 transitions, 9370 flow, removed 89 selfloop flow, removed 24 redundant places. [2021-12-22 13:42:21,202 INFO L242 Difference]: Finished difference. Result has 530 places, 396 transitions, 5372 flow [2021-12-22 13:42:21,202 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6276, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=5372, PETRI_PLACES=530, PETRI_TRANSITIONS=396} [2021-12-22 13:42:21,202 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 343 predicate places. [2021-12-22 13:42:21,203 INFO L470 AbstractCegarLoop]: Abstraction has has 530 places, 396 transitions, 5372 flow [2021-12-22 13:42:21,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:21,203 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:21,203 INFO L254 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] [2021-12-22 13:42:21,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-12-22 13:42:21,204 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:21,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:21,204 INFO L85 PathProgramCache]: Analyzing trace with hash -602702176, now seen corresponding path program 18 times [2021-12-22 13:42:21,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:21,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988938331] [2021-12-22 13:42:21,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:21,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:21,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:21,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:21,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988938331] [2021-12-22 13:42:21,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988938331] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:21,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:21,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 13:42:21,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098023298] [2021-12-22 13:42:21,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:21,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:42:21,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:21,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:42:21,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:42:21,390 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-12-22 13:42:21,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 396 transitions, 5372 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:21,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:21,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-12-22 13:42:21,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:22,524 INFO L129 PetriNetUnfolder]: 779/2772 cut-off events. [2021-12-22 13:42:22,525 INFO L130 PetriNetUnfolder]: For 63636/63664 co-relation queries the response was YES. [2021-12-22 13:42:22,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18192 conditions, 2772 events. 779/2772 cut-off events. For 63636/63664 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 21310 event pairs, 361 based on Foata normal form. 11/2685 useless extension candidates. Maximal degree in co-relation 18016. Up to 928 conditions per place. [2021-12-22 13:42:22,579 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 254 selfloop transitions, 111 changer transitions 68/574 dead transitions. [2021-12-22 13:42:22,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 574 transitions, 9980 flow [2021-12-22 13:42:22,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-12-22 13:42:22,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-12-22 13:42:22,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5918 transitions. [2021-12-22 13:42:22,583 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616473616473617 [2021-12-22 13:42:22,583 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5918 transitions. [2021-12-22 13:42:22,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5918 transitions. [2021-12-22 13:42:22,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:22,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5918 transitions. [2021-12-22 13:42:22,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 159.94594594594594) internal successors, (5918), 37 states have internal predecessors, (5918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:22,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:22,591 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:22,591 INFO L186 Difference]: Start difference. First operand has 530 places, 396 transitions, 5372 flow. Second operand 37 states and 5918 transitions. [2021-12-22 13:42:22,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 574 transitions, 9980 flow [2021-12-22 13:42:22,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 574 transitions, 8876 flow, removed 65 selfloop flow, removed 35 redundant places. [2021-12-22 13:42:22,869 INFO L242 Difference]: Finished difference. Result has 508 places, 415 transitions, 5380 flow [2021-12-22 13:42:22,869 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4638, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=5380, PETRI_PLACES=508, PETRI_TRANSITIONS=415} [2021-12-22 13:42:22,869 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 321 predicate places. [2021-12-22 13:42:22,870 INFO L470 AbstractCegarLoop]: Abstraction has has 508 places, 415 transitions, 5380 flow [2021-12-22 13:42:22,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:22,870 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:22,870 INFO L254 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] [2021-12-22 13:42:22,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-12-22 13:42:22,871 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:22,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:22,871 INFO L85 PathProgramCache]: Analyzing trace with hash 297519288, now seen corresponding path program 19 times [2021-12-22 13:42:22,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:22,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661409826] [2021-12-22 13:42:22,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:22,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:23,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:23,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:23,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661409826] [2021-12-22 13:42:23,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661409826] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:23,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:23,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 13:42:23,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064759874] [2021-12-22 13:42:23,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:23,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:42:23,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:23,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:42:23,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:42:23,007 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-12-22 13:42:23,008 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 415 transitions, 5380 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:23,008 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:23,008 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-12-22 13:42:23,009 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:24,280 INFO L129 PetriNetUnfolder]: 819/2902 cut-off events. [2021-12-22 13:42:24,281 INFO L130 PetriNetUnfolder]: For 61114/61142 co-relation queries the response was YES. [2021-12-22 13:42:24,322 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18501 conditions, 2902 events. 819/2902 cut-off events. For 61114/61142 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 22684 event pairs, 376 based on Foata normal form. 11/2815 useless extension candidates. Maximal degree in co-relation 18321. Up to 944 conditions per place. [2021-12-22 13:42:24,332 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 276 selfloop transitions, 124 changer transitions 79/620 dead transitions. [2021-12-22 13:42:24,332 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 620 transitions, 10595 flow [2021-12-22 13:42:24,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-12-22 13:42:24,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-12-22 13:42:24,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7340 transitions. [2021-12-22 13:42:24,336 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7598343685300207 [2021-12-22 13:42:24,336 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7340 transitions. [2021-12-22 13:42:24,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7340 transitions. [2021-12-22 13:42:24,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:24,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7340 transitions. [2021-12-22 13:42:24,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.56521739130434) internal successors, (7340), 46 states have internal predecessors, (7340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:24,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:24,346 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:24,346 INFO L186 Difference]: Start difference. First operand has 508 places, 415 transitions, 5380 flow. Second operand 46 states and 7340 transitions. [2021-12-22 13:42:24,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 620 transitions, 10595 flow [2021-12-22 13:42:24,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 620 transitions, 10209 flow, removed 137 selfloop flow, removed 21 redundant places. [2021-12-22 13:42:24,629 INFO L242 Difference]: Finished difference. Result has 543 places, 440 transitions, 6086 flow [2021-12-22 13:42:24,629 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5202, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=6086, PETRI_PLACES=543, PETRI_TRANSITIONS=440} [2021-12-22 13:42:24,629 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 356 predicate places. [2021-12-22 13:42:24,630 INFO L470 AbstractCegarLoop]: Abstraction has has 543 places, 440 transitions, 6086 flow [2021-12-22 13:42:24,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:24,630 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:24,630 INFO L254 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] [2021-12-22 13:42:24,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-12-22 13:42:24,631 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:24,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:24,631 INFO L85 PathProgramCache]: Analyzing trace with hash -193100770, now seen corresponding path program 20 times [2021-12-22 13:42:24,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:24,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441566777] [2021-12-22 13:42:24,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:24,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:24,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:24,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:24,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441566777] [2021-12-22 13:42:24,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441566777] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:24,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:24,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 13:42:24,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395663015] [2021-12-22 13:42:24,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:24,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:42:24,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:24,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:42:24,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:42:24,770 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-12-22 13:42:24,772 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 440 transitions, 6086 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:24,772 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:24,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-12-22 13:42:24,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:26,297 INFO L129 PetriNetUnfolder]: 813/2914 cut-off events. [2021-12-22 13:42:26,297 INFO L130 PetriNetUnfolder]: For 64230/64258 co-relation queries the response was YES. [2021-12-22 13:42:26,350 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18840 conditions, 2914 events. 813/2914 cut-off events. For 64230/64258 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 22924 event pairs, 377 based on Foata normal form. 11/2828 useless extension candidates. Maximal degree in co-relation 18643. Up to 924 conditions per place. [2021-12-22 13:42:26,363 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 273 selfloop transitions, 127 changer transitions 80/621 dead transitions. [2021-12-22 13:42:26,363 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 621 transitions, 10926 flow [2021-12-22 13:42:26,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-12-22 13:42:26,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-12-22 13:42:26,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7180 transitions. [2021-12-22 13:42:26,368 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7597883597883598 [2021-12-22 13:42:26,368 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7180 transitions. [2021-12-22 13:42:26,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7180 transitions. [2021-12-22 13:42:26,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:26,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7180 transitions. [2021-12-22 13:42:26,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.55555555555554) internal successors, (7180), 45 states have internal predecessors, (7180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:26,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:26,379 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:26,379 INFO L186 Difference]: Start difference. First operand has 543 places, 440 transitions, 6086 flow. Second operand 45 states and 7180 transitions. [2021-12-22 13:42:26,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 621 transitions, 10926 flow [2021-12-22 13:42:26,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 621 transitions, 10558 flow, removed 152 selfloop flow, removed 29 redundant places. [2021-12-22 13:42:26,739 INFO L242 Difference]: Finished difference. Result has 559 places, 444 transitions, 6474 flow [2021-12-22 13:42:26,739 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5932, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=6474, PETRI_PLACES=559, PETRI_TRANSITIONS=444} [2021-12-22 13:42:26,740 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 372 predicate places. [2021-12-22 13:42:26,740 INFO L470 AbstractCegarLoop]: Abstraction has has 559 places, 444 transitions, 6474 flow [2021-12-22 13:42:26,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:26,741 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:26,741 INFO L254 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] [2021-12-22 13:42:26,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-12-22 13:42:26,741 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:26,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:26,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1361915772, now seen corresponding path program 21 times [2021-12-22 13:42:26,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:26,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223460430] [2021-12-22 13:42:26,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:26,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:26,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:26,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:26,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223460430] [2021-12-22 13:42:26,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223460430] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:26,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:26,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 13:42:26,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752924014] [2021-12-22 13:42:26,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:26,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:42:26,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:26,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:42:26,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:42:26,863 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-12-22 13:42:26,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 444 transitions, 6474 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:26,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:26,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-12-22 13:42:26,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:28,147 INFO L129 PetriNetUnfolder]: 804/2847 cut-off events. [2021-12-22 13:42:28,148 INFO L130 PetriNetUnfolder]: For 64950/64978 co-relation queries the response was YES. [2021-12-22 13:42:28,202 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18857 conditions, 2847 events. 804/2847 cut-off events. For 64950/64978 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 22108 event pairs, 366 based on Foata normal form. 11/2760 useless extension candidates. Maximal degree in co-relation 18653. Up to 945 conditions per place. [2021-12-22 13:42:28,215 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 274 selfloop transitions, 124 changer transitions 69/608 dead transitions. [2021-12-22 13:42:28,216 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 608 transitions, 10998 flow [2021-12-22 13:42:28,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-22 13:42:28,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-12-22 13:42:28,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6078 transitions. [2021-12-22 13:42:28,220 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616541353383459 [2021-12-22 13:42:28,220 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6078 transitions. [2021-12-22 13:42:28,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6078 transitions. [2021-12-22 13:42:28,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:28,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6078 transitions. [2021-12-22 13:42:28,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.94736842105263) internal successors, (6078), 38 states have internal predecessors, (6078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:28,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:28,231 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:28,231 INFO L186 Difference]: Start difference. First operand has 559 places, 444 transitions, 6474 flow. Second operand 38 states and 6078 transitions. [2021-12-22 13:42:28,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 608 transitions, 10998 flow [2021-12-22 13:42:28,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 608 transitions, 10536 flow, removed 155 selfloop flow, removed 33 redundant places. [2021-12-22 13:42:28,634 INFO L242 Difference]: Finished difference. Result has 554 places, 451 transitions, 6799 flow [2021-12-22 13:42:28,634 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6236, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=6799, PETRI_PLACES=554, PETRI_TRANSITIONS=451} [2021-12-22 13:42:28,634 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 367 predicate places. [2021-12-22 13:42:28,635 INFO L470 AbstractCegarLoop]: Abstraction has has 554 places, 451 transitions, 6799 flow [2021-12-22 13:42:28,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:28,635 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:28,635 INFO L254 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] [2021-12-22 13:42:28,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-12-22 13:42:28,636 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:28,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:28,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1406673902, now seen corresponding path program 22 times [2021-12-22 13:42:28,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:28,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363912064] [2021-12-22 13:42:28,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:28,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:28,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:28,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:28,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363912064] [2021-12-22 13:42:28,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363912064] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:28,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:28,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 13:42:28,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962345234] [2021-12-22 13:42:28,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:28,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:42:28,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:28,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:42:28,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:42:28,795 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-12-22 13:42:28,796 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 451 transitions, 6799 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:28,796 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:28,796 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-12-22 13:42:28,796 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:30,070 INFO L129 PetriNetUnfolder]: 792/2734 cut-off events. [2021-12-22 13:42:30,070 INFO L130 PetriNetUnfolder]: For 63558/63588 co-relation queries the response was YES. [2021-12-22 13:42:30,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18524 conditions, 2734 events. 792/2734 cut-off events. For 63558/63588 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20948 event pairs, 368 based on Foata normal form. 13/2648 useless extension candidates. Maximal degree in co-relation 18326. Up to 950 conditions per place. [2021-12-22 13:42:30,135 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 267 selfloop transitions, 124 changer transitions 59/591 dead transitions. [2021-12-22 13:42:30,135 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 591 transitions, 10643 flow [2021-12-22 13:42:30,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-22 13:42:30,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-12-22 13:42:30,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4816 transitions. [2021-12-22 13:42:30,139 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7644444444444445 [2021-12-22 13:42:30,139 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4816 transitions. [2021-12-22 13:42:30,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4816 transitions. [2021-12-22 13:42:30,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:30,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4816 transitions. [2021-12-22 13:42:30,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.53333333333333) internal successors, (4816), 30 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:30,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:30,146 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:30,146 INFO L186 Difference]: Start difference. First operand has 554 places, 451 transitions, 6799 flow. Second operand 30 states and 4816 transitions. [2021-12-22 13:42:30,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 591 transitions, 10643 flow [2021-12-22 13:42:30,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 591 transitions, 10168 flow, removed 155 selfloop flow, removed 22 redundant places. [2021-12-22 13:42:30,523 INFO L242 Difference]: Finished difference. Result has 551 places, 456 transitions, 6961 flow [2021-12-22 13:42:30,523 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6528, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=6961, PETRI_PLACES=551, PETRI_TRANSITIONS=456} [2021-12-22 13:42:30,538 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 364 predicate places. [2021-12-22 13:42:30,539 INFO L470 AbstractCegarLoop]: Abstraction has has 551 places, 456 transitions, 6961 flow [2021-12-22 13:42:30,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:30,540 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:30,540 INFO L254 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] [2021-12-22 13:42:30,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-12-22 13:42:30,540 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:30,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:30,540 INFO L85 PathProgramCache]: Analyzing trace with hash 773785554, now seen corresponding path program 23 times [2021-12-22 13:42:30,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:30,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636571340] [2021-12-22 13:42:30,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:30,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:30,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:30,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:30,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636571340] [2021-12-22 13:42:30,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636571340] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:30,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:30,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 13:42:30,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986310470] [2021-12-22 13:42:30,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:30,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:42:30,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:30,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:42:30,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:42:30,679 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-12-22 13:42:30,680 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 456 transitions, 6961 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:30,680 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:30,681 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-12-22 13:42:30,681 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:31,919 INFO L129 PetriNetUnfolder]: 785/2722 cut-off events. [2021-12-22 13:42:31,920 INFO L130 PetriNetUnfolder]: For 60860/60890 co-relation queries the response was YES. [2021-12-22 13:42:31,969 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18238 conditions, 2722 events. 785/2722 cut-off events. For 60860/60890 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 20803 event pairs, 370 based on Foata normal form. 13/2636 useless extension candidates. Maximal degree in co-relation 18044. Up to 948 conditions per place. [2021-12-22 13:42:31,980 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 269 selfloop transitions, 127 changer transitions 59/596 dead transitions. [2021-12-22 13:42:31,981 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 596 transitions, 10737 flow [2021-12-22 13:42:31,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-22 13:42:31,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-12-22 13:42:31,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4814 transitions. [2021-12-22 13:42:31,984 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7641269841269841 [2021-12-22 13:42:31,984 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4814 transitions. [2021-12-22 13:42:31,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4814 transitions. [2021-12-22 13:42:31,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:31,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4814 transitions. [2021-12-22 13:42:31,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.46666666666667) internal successors, (4814), 30 states have internal predecessors, (4814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:31,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:31,991 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:31,992 INFO L186 Difference]: Start difference. First operand has 551 places, 456 transitions, 6961 flow. Second operand 30 states and 4814 transitions. [2021-12-22 13:42:31,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 596 transitions, 10737 flow [2021-12-22 13:42:32,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 596 transitions, 10468 flow, removed 93 selfloop flow, removed 13 redundant places. [2021-12-22 13:42:32,371 INFO L242 Difference]: Finished difference. Result has 566 places, 461 transitions, 7221 flow [2021-12-22 13:42:32,371 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6780, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7221, PETRI_PLACES=566, PETRI_TRANSITIONS=461} [2021-12-22 13:42:32,373 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 379 predicate places. [2021-12-22 13:42:32,373 INFO L470 AbstractCegarLoop]: Abstraction has has 566 places, 461 transitions, 7221 flow [2021-12-22 13:42:32,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:32,374 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:32,374 INFO L254 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] [2021-12-22 13:42:32,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-12-22 13:42:32,374 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:32,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:32,374 INFO L85 PathProgramCache]: Analyzing trace with hash 476356618, now seen corresponding path program 24 times [2021-12-22 13:42:32,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:32,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399713220] [2021-12-22 13:42:32,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:32,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:32,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:32,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:32,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399713220] [2021-12-22 13:42:32,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399713220] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:32,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:32,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 13:42:32,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781379991] [2021-12-22 13:42:32,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:32,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:42:32,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:32,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:42:32,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:42:32,575 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-12-22 13:42:32,576 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 461 transitions, 7221 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:32,576 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:32,576 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-12-22 13:42:32,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:33,746 INFO L129 PetriNetUnfolder]: 760/2723 cut-off events. [2021-12-22 13:42:33,747 INFO L130 PetriNetUnfolder]: For 61002/61030 co-relation queries the response was YES. [2021-12-22 13:42:33,788 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17750 conditions, 2723 events. 760/2723 cut-off events. For 61002/61030 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 20854 event pairs, 375 based on Foata normal form. 11/2635 useless extension candidates. Maximal degree in co-relation 17552. Up to 936 conditions per place. [2021-12-22 13:42:33,798 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 262 selfloop transitions, 95 changer transitions 62/560 dead transitions. [2021-12-22 13:42:33,798 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 560 transitions, 9882 flow [2021-12-22 13:42:33,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-22 13:42:33,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-12-22 13:42:33,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4333 transitions. [2021-12-22 13:42:33,800 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7641975308641975 [2021-12-22 13:42:33,800 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4333 transitions. [2021-12-22 13:42:33,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4333 transitions. [2021-12-22 13:42:33,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:33,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4333 transitions. [2021-12-22 13:42:33,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.4814814814815) internal successors, (4333), 27 states have internal predecessors, (4333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:33,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:33,806 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:33,806 INFO L186 Difference]: Start difference. First operand has 566 places, 461 transitions, 7221 flow. Second operand 27 states and 4333 transitions. [2021-12-22 13:42:33,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 560 transitions, 9882 flow [2021-12-22 13:42:34,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 560 transitions, 9638 flow, removed 55 selfloop flow, removed 14 redundant places. [2021-12-22 13:42:34,141 INFO L242 Difference]: Finished difference. Result has 570 places, 424 transitions, 6311 flow [2021-12-22 13:42:34,141 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7012, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=6311, PETRI_PLACES=570, PETRI_TRANSITIONS=424} [2021-12-22 13:42:34,142 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 383 predicate places. [2021-12-22 13:42:34,142 INFO L470 AbstractCegarLoop]: Abstraction has has 570 places, 424 transitions, 6311 flow [2021-12-22 13:42:34,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:34,142 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:42:34,142 INFO L254 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] [2021-12-22 13:42:34,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-12-22 13:42:34,143 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:42:34,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:42:34,143 INFO L85 PathProgramCache]: Analyzing trace with hash -118413066, now seen corresponding path program 25 times [2021-12-22 13:42:34,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:42:34,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68209181] [2021-12-22 13:42:34,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:42:34,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:42:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:42:34,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:42:34,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:42:34,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68209181] [2021-12-22 13:42:34,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68209181] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:42:34,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:42:34,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 13:42:34,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874357450] [2021-12-22 13:42:34,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:42:34,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:42:34,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:42:34,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:42:34,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:42:34,264 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-12-22 13:42:34,264 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 424 transitions, 6311 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:34,265 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:42:34,265 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-12-22 13:42:34,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:42:35,571 INFO L129 PetriNetUnfolder]: 759/2666 cut-off events. [2021-12-22 13:42:35,571 INFO L130 PetriNetUnfolder]: For 61442/61472 co-relation queries the response was YES. [2021-12-22 13:42:35,621 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17706 conditions, 2666 events. 759/2666 cut-off events. For 61442/61472 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 20210 event pairs, 354 based on Foata normal form. 13/2587 useless extension candidates. Maximal degree in co-relation 17510. Up to 922 conditions per place. [2021-12-22 13:42:35,634 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 264 selfloop transitions, 105 changer transitions 71/581 dead transitions. [2021-12-22 13:42:35,634 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 581 transitions, 10534 flow [2021-12-22 13:42:35,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-22 13:42:35,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-12-22 13:42:35,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6075 transitions. [2021-12-22 13:42:35,637 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612781954887218 [2021-12-22 13:42:35,638 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6075 transitions. [2021-12-22 13:42:35,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6075 transitions. [2021-12-22 13:42:35,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:42:35,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6075 transitions. [2021-12-22 13:42:35,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.8684210526316) internal successors, (6075), 38 states have internal predecessors, (6075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:35,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:35,648 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:42:35,648 INFO L186 Difference]: Start difference. First operand has 570 places, 424 transitions, 6311 flow. Second operand 38 states and 6075 transitions. [2021-12-22 13:42:35,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 581 transitions, 10534 flow