./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:05:20,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:05:20,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:05:20,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:05:20,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:05:20,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:05:20,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:05:20,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:05:20,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:05:20,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:05:20,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:05:20,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:05:20,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:05:20,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:05:20,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:05:20,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:05:20,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:05:20,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:05:20,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:05:20,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:05:20,897 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:05:20,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:05:20,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:05:20,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:05:20,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:05:20,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:05:20,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:05:20,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:05:20,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:05:20,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:05:20,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:05:20,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:05:20,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:05:20,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:05:20,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:05:20,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:05:20,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:05:20,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:05:20,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:05:20,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:05:20,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:05:20,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:05:20,913 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:05:20,939 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:05:20,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:05:20,942 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:05:20,942 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:05:20,943 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:05:20,943 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:05:20,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:05:20,944 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:05:20,944 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:05:20,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:05:20,945 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:05:20,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:05:20,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:05:20,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:05:20,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:05:20,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:05:20,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:05:20,946 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:05:20,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:05:20,947 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:05:20,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:05:20,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:05:20,948 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:05:20,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:05:20,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:05:20,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:05:20,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:05:20,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:05:20,949 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:05:20,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:05:20,949 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:05:20,949 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:05:20,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:05:20,950 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d [2022-07-13 22:05:21,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:05:21,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:05:21,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:05:21,179 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:05:21,179 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:05:21,180 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2022-07-13 22:05:21,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9cf2a370/5660db3080a041a2902b6df18fc72225/FLAG62d6ddfa1 [2022-07-13 22:05:21,621 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:05:21,621 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2022-07-13 22:05:21,626 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9cf2a370/5660db3080a041a2902b6df18fc72225/FLAG62d6ddfa1 [2022-07-13 22:05:21,636 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9cf2a370/5660db3080a041a2902b6df18fc72225 [2022-07-13 22:05:21,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:05:21,638 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:05:21,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:05:21,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:05:21,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:05:21,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:05:21" (1/1) ... [2022-07-13 22:05:21,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38191600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:21, skipping insertion in model container [2022-07-13 22:05:21,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:05:21" (1/1) ... [2022-07-13 22:05:21,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:05:21,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:05:21,857 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2022-07-13 22:05:21,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:05:21,874 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:05:21,895 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2022-07-13 22:05:21,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:05:21,910 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:05:21,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:21 WrapperNode [2022-07-13 22:05:21,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:05:21,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:05:21,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:05:21,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:05:21,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:21" (1/1) ... [2022-07-13 22:05:21,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:21" (1/1) ... [2022-07-13 22:05:21,978 INFO L137 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 21, calls inlined = 29, statements flattened = 452 [2022-07-13 22:05:21,978 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:05:21,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:05:21,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:05:21,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:05:21,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:21" (1/1) ... [2022-07-13 22:05:21,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:21" (1/1) ... [2022-07-13 22:05:21,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:21" (1/1) ... [2022-07-13 22:05:21,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:21" (1/1) ... [2022-07-13 22:05:22,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:21" (1/1) ... [2022-07-13 22:05:22,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:21" (1/1) ... [2022-07-13 22:05:22,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:21" (1/1) ... [2022-07-13 22:05:22,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:05:22,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:05:22,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:05:22,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:05:22,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:21" (1/1) ... [2022-07-13 22:05:22,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:05:22,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:05:22,047 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 22:05:22,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 22:05:22,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:05:22,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:05:22,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:05:22,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:05:22,077 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:05:22,077 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:05:22,077 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:05:22,078 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:05:22,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:05:22,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:05:22,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:05:22,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:05:22,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:05:22,080 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:05:22,200 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:05:22,202 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:05:22,657 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:05:22,666 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:05:22,666 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-13 22:05:22,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:05:22 BoogieIcfgContainer [2022-07-13 22:05:22,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:05:22,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:05:22,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:05:22,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:05:22,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:05:21" (1/3) ... [2022-07-13 22:05:22,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b00acea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:05:22, skipping insertion in model container [2022-07-13 22:05:22,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:05:21" (2/3) ... [2022-07-13 22:05:22,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b00acea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:05:22, skipping insertion in model container [2022-07-13 22:05:22,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:05:22" (3/3) ... [2022-07-13 22:05:22,674 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2022-07-13 22:05:22,678 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:05:22,685 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:05:22,685 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:05:22,685 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:05:22,815 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-13 22:05:22,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 538 places, 596 transitions, 1208 flow [2022-07-13 22:05:23,040 INFO L129 PetriNetUnfolder]: 65/594 cut-off events. [2022-07-13 22:05:23,040 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 22:05:23,058 INFO L84 FinitePrefix]: Finished finitePrefix Result has 603 conditions, 594 events. 65/594 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1763 event pairs, 0 based on Foata normal form. 0/528 useless extension candidates. Maximal degree in co-relation 413. Up to 2 conditions per place. [2022-07-13 22:05:23,058 INFO L82 GeneralOperation]: Start removeDead. Operand has 538 places, 596 transitions, 1208 flow [2022-07-13 22:05:23,083 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 527 places, 585 transitions, 1182 flow [2022-07-13 22:05:23,099 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:05:23,106 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@111cb2a7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5e747e51 [2022-07-13 22:05:23,107 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-13 22:05:23,181 INFO L129 PetriNetUnfolder]: 57/538 cut-off events. [2022-07-13 22:05:23,181 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 22:05:23,182 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:23,183 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:23,183 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:23,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:23,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1910334662, now seen corresponding path program 1 times [2022-07-13 22:05:23,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:23,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619266483] [2022-07-13 22:05:23,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:23,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:23,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:23,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:23,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619266483] [2022-07-13 22:05:23,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619266483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:23,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:23,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 22:05:23,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623130321] [2022-07-13 22:05:23,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:23,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 22:05:23,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:23,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 22:05:23,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 22:05:23,493 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 566 out of 596 [2022-07-13 22:05:23,500 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 585 transitions, 1182 flow. Second operand has 2 states, 2 states have (on average 569.0) internal successors, (1138), 2 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:23,500 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:23,500 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 566 of 596 [2022-07-13 22:05:23,501 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:23,627 INFO L129 PetriNetUnfolder]: 40/560 cut-off events. [2022-07-13 22:05:23,627 INFO L130 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2022-07-13 22:05:23,634 INFO L84 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 560 events. 40/560 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1685 event pairs, 0 based on Foata normal form. 30/529 useless extension candidates. Maximal degree in co-relation 396. Up to 5 conditions per place. [2022-07-13 22:05:23,646 INFO L132 encePairwiseOnDemand]: 571/596 looper letters, 4 selfloop transitions, 0 changer transitions 5/560 dead transitions. [2022-07-13 22:05:23,646 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 560 transitions, 1140 flow [2022-07-13 22:05:23,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 22:05:23,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-13 22:05:23,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1161 transitions. [2022-07-13 22:05:23,664 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9739932885906041 [2022-07-13 22:05:23,664 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1161 transitions. [2022-07-13 22:05:23,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1161 transitions. [2022-07-13 22:05:23,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:23,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1161 transitions. [2022-07-13 22:05:23,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 580.5) internal successors, (1161), 2 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:23,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 596.0) internal successors, (1788), 3 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:23,684 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 596.0) internal successors, (1788), 3 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:23,685 INFO L186 Difference]: Start difference. First operand has 527 places, 585 transitions, 1182 flow. Second operand 2 states and 1161 transitions. [2022-07-13 22:05:23,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 560 transitions, 1140 flow [2022-07-13 22:05:23,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 560 transitions, 1132 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-13 22:05:23,702 INFO L242 Difference]: Finished difference. Result has 524 places, 555 transitions, 1114 flow [2022-07-13 22:05:23,704 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=1114, PETRI_PLACES=524, PETRI_TRANSITIONS=555} [2022-07-13 22:05:23,710 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, -3 predicate places. [2022-07-13 22:05:23,710 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 555 transitions, 1114 flow [2022-07-13 22:05:23,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 569.0) internal successors, (1138), 2 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:23,711 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:23,712 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:23,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:05:23,712 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:23,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:23,713 INFO L85 PathProgramCache]: Analyzing trace with hash 473457702, now seen corresponding path program 1 times [2022-07-13 22:05:23,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:23,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974771898] [2022-07-13 22:05:23,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:23,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:23,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:23,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:23,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974771898] [2022-07-13 22:05:23,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974771898] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:23,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:23,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:23,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610161423] [2022-07-13 22:05:23,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:23,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:23,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:23,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:23,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:23,849 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 552 out of 596 [2022-07-13 22:05:23,851 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 555 transitions, 1114 flow. Second operand has 3 states, 3 states have (on average 555.3333333333334) internal successors, (1666), 3 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:23,851 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:23,851 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 552 of 596 [2022-07-13 22:05:23,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:24,163 INFO L129 PetriNetUnfolder]: 177/1911 cut-off events. [2022-07-13 22:05:24,163 INFO L130 PetriNetUnfolder]: For 19/21 co-relation queries the response was YES. [2022-07-13 22:05:24,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2050 conditions, 1911 events. 177/1911 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 14011 event pairs, 36 based on Foata normal form. 1/1696 useless extension candidates. Maximal degree in co-relation 2047. Up to 87 conditions per place. [2022-07-13 22:05:24,179 INFO L132 encePairwiseOnDemand]: 590/596 looper letters, 27 selfloop transitions, 4 changer transitions 0/568 dead transitions. [2022-07-13 22:05:24,180 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 568 transitions, 1205 flow [2022-07-13 22:05:24,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:24,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:24,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1689 transitions. [2022-07-13 22:05:24,183 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9446308724832215 [2022-07-13 22:05:24,184 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1689 transitions. [2022-07-13 22:05:24,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1689 transitions. [2022-07-13 22:05:24,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:24,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1689 transitions. [2022-07-13 22:05:24,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 563.0) internal successors, (1689), 3 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:24,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:24,191 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:24,191 INFO L186 Difference]: Start difference. First operand has 524 places, 555 transitions, 1114 flow. Second operand 3 states and 1689 transitions. [2022-07-13 22:05:24,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 568 transitions, 1205 flow [2022-07-13 22:05:24,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 568 transitions, 1205 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:05:24,199 INFO L242 Difference]: Finished difference. Result has 523 places, 557 transitions, 1142 flow [2022-07-13 22:05:24,200 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1142, PETRI_PLACES=523, PETRI_TRANSITIONS=557} [2022-07-13 22:05:24,201 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, -4 predicate places. [2022-07-13 22:05:24,201 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 557 transitions, 1142 flow [2022-07-13 22:05:24,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 555.3333333333334) internal successors, (1666), 3 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:24,202 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:24,203 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:24,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:05:24,204 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:24,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:24,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1952500914, now seen corresponding path program 2 times [2022-07-13 22:05:24,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:24,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839872246] [2022-07-13 22:05:24,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:24,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:24,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:24,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:24,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839872246] [2022-07-13 22:05:24,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839872246] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:24,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:24,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:24,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083795943] [2022-07-13 22:05:24,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:24,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:24,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:24,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:24,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:24,291 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 552 out of 596 [2022-07-13 22:05:24,293 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 557 transitions, 1142 flow. Second operand has 3 states, 3 states have (on average 555.3333333333334) internal successors, (1666), 3 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:24,293 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:24,293 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 552 of 596 [2022-07-13 22:05:24,293 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:24,544 INFO L129 PetriNetUnfolder]: 168/1861 cut-off events. [2022-07-13 22:05:24,544 INFO L130 PetriNetUnfolder]: For 77/82 co-relation queries the response was YES. [2022-07-13 22:05:24,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2058 conditions, 1861 events. 168/1861 cut-off events. For 77/82 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 13792 event pairs, 39 based on Foata normal form. 4/1689 useless extension candidates. Maximal degree in co-relation 2053. Up to 100 conditions per place. [2022-07-13 22:05:24,558 INFO L132 encePairwiseOnDemand]: 590/596 looper letters, 29 selfloop transitions, 4 changer transitions 0/570 dead transitions. [2022-07-13 22:05:24,558 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 570 transitions, 1241 flow [2022-07-13 22:05:24,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:24,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:24,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1689 transitions. [2022-07-13 22:05:24,563 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9446308724832215 [2022-07-13 22:05:24,563 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1689 transitions. [2022-07-13 22:05:24,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1689 transitions. [2022-07-13 22:05:24,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:24,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1689 transitions. [2022-07-13 22:05:24,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 563.0) internal successors, (1689), 3 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:24,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:24,571 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:24,571 INFO L186 Difference]: Start difference. First operand has 523 places, 557 transitions, 1142 flow. Second operand 3 states and 1689 transitions. [2022-07-13 22:05:24,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 570 transitions, 1241 flow [2022-07-13 22:05:24,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 570 transitions, 1233 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:24,581 INFO L242 Difference]: Finished difference. Result has 525 places, 559 transitions, 1166 flow [2022-07-13 22:05:24,582 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1166, PETRI_PLACES=525, PETRI_TRANSITIONS=559} [2022-07-13 22:05:24,584 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, -2 predicate places. [2022-07-13 22:05:24,584 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 559 transitions, 1166 flow [2022-07-13 22:05:24,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 555.3333333333334) internal successors, (1666), 3 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:24,585 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:24,586 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:24,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 22:05:24,586 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:24,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:24,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1641735220, now seen corresponding path program 1 times [2022-07-13 22:05:24,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:24,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894633204] [2022-07-13 22:05:24,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:24,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:24,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:05:24,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:24,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894633204] [2022-07-13 22:05:24,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894633204] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:24,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:24,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:05:24,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853793826] [2022-07-13 22:05:24,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:24,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:05:24,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:24,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:05:24,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:05:24,703 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 544 out of 596 [2022-07-13 22:05:24,705 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 559 transitions, 1166 flow. Second operand has 5 states, 5 states have (on average 547.6) internal successors, (2738), 5 states have internal predecessors, (2738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:24,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:24,706 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 544 of 596 [2022-07-13 22:05:24,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:24,844 INFO L129 PetriNetUnfolder]: 50/678 cut-off events. [2022-07-13 22:05:24,844 INFO L130 PetriNetUnfolder]: For 23/39 co-relation queries the response was YES. [2022-07-13 22:05:24,852 INFO L84 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 678 events. 50/678 cut-off events. For 23/39 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2583 event pairs, 0 based on Foata normal form. 0/615 useless extension candidates. Maximal degree in co-relation 744. Up to 31 conditions per place. [2022-07-13 22:05:24,856 INFO L132 encePairwiseOnDemand]: 586/596 looper letters, 26 selfloop transitions, 8 changer transitions 0/567 dead transitions. [2022-07-13 22:05:24,856 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 567 transitions, 1250 flow [2022-07-13 22:05:24,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:05:24,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:05:24,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2756 transitions. [2022-07-13 22:05:24,862 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9248322147651007 [2022-07-13 22:05:24,862 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2756 transitions. [2022-07-13 22:05:24,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2756 transitions. [2022-07-13 22:05:24,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:24,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2756 transitions. [2022-07-13 22:05:24,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 551.2) internal successors, (2756), 5 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:24,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 596.0) internal successors, (3576), 6 states have internal predecessors, (3576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:24,879 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 596.0) internal successors, (3576), 6 states have internal predecessors, (3576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:24,879 INFO L186 Difference]: Start difference. First operand has 525 places, 559 transitions, 1166 flow. Second operand 5 states and 2756 transitions. [2022-07-13 22:05:24,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 567 transitions, 1250 flow [2022-07-13 22:05:24,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 567 transitions, 1242 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:24,891 INFO L242 Difference]: Finished difference. Result has 528 places, 561 transitions, 1190 flow [2022-07-13 22:05:24,892 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1190, PETRI_PLACES=528, PETRI_TRANSITIONS=561} [2022-07-13 22:05:24,893 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 1 predicate places. [2022-07-13 22:05:24,894 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 561 transitions, 1190 flow [2022-07-13 22:05:24,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 547.6) internal successors, (2738), 5 states have internal predecessors, (2738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:24,900 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:24,900 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:24,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 22:05:24,900 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:24,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:24,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1612412822, now seen corresponding path program 1 times [2022-07-13 22:05:24,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:24,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115708764] [2022-07-13 22:05:24,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:24,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:25,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:05:25,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:25,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115708764] [2022-07-13 22:05:25,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115708764] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:05:25,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112652639] [2022-07-13 22:05:25,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:25,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:05:25,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:05:25,032 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:05:25,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:05:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:25,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:05:25,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:05:25,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:05:25,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:05:25,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:05:25,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112652639] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:05:25,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:05:25,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-07-13 22:05:25,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517364048] [2022-07-13 22:05:25,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:05:25,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 22:05:25,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:25,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 22:05:25,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:05:25,372 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 542 out of 596 [2022-07-13 22:05:25,379 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 561 transitions, 1190 flow. Second operand has 15 states, 15 states have (on average 545.1333333333333) internal successors, (8177), 15 states have internal predecessors, (8177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:25,379 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:25,379 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 542 of 596 [2022-07-13 22:05:25,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:25,617 INFO L129 PetriNetUnfolder]: 50/694 cut-off events. [2022-07-13 22:05:25,618 INFO L130 PetriNetUnfolder]: For 23/39 co-relation queries the response was YES. [2022-07-13 22:05:25,625 INFO L84 FinitePrefix]: Finished finitePrefix Result has 795 conditions, 694 events. 50/694 cut-off events. For 23/39 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2546 event pairs, 0 based on Foata normal form. 4/637 useless extension candidates. Maximal degree in co-relation 788. Up to 25 conditions per place. [2022-07-13 22:05:25,628 INFO L132 encePairwiseOnDemand]: 580/596 looper letters, 28 selfloop transitions, 22 changer transitions 0/581 dead transitions. [2022-07-13 22:05:25,628 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 581 transitions, 1334 flow [2022-07-13 22:05:25,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:05:25,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-13 22:05:25,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 6016 transitions. [2022-07-13 22:05:25,636 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9176327028676022 [2022-07-13 22:05:25,636 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 6016 transitions. [2022-07-13 22:05:25,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 6016 transitions. [2022-07-13 22:05:25,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:25,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 6016 transitions. [2022-07-13 22:05:25,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 546.9090909090909) internal successors, (6016), 11 states have internal predecessors, (6016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:25,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 596.0) internal successors, (7152), 12 states have internal predecessors, (7152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:25,668 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 596.0) internal successors, (7152), 12 states have internal predecessors, (7152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:25,668 INFO L186 Difference]: Start difference. First operand has 528 places, 561 transitions, 1190 flow. Second operand 11 states and 6016 transitions. [2022-07-13 22:05:25,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 581 transitions, 1334 flow [2022-07-13 22:05:25,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 581 transitions, 1322 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-13 22:05:25,677 INFO L242 Difference]: Finished difference. Result has 538 places, 573 transitions, 1289 flow [2022-07-13 22:05:25,678 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1178, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1289, PETRI_PLACES=538, PETRI_TRANSITIONS=573} [2022-07-13 22:05:25,680 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 11 predicate places. [2022-07-13 22:05:25,680 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 573 transitions, 1289 flow [2022-07-13 22:05:25,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 545.1333333333333) internal successors, (8177), 15 states have internal predecessors, (8177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:25,682 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:25,682 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:25,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 22:05:25,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:05:25,906 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:25,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:25,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1847083086, now seen corresponding path program 2 times [2022-07-13 22:05:25,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:25,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301317181] [2022-07-13 22:05:25,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:25,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:26,012 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-13 22:05:26,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:26,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301317181] [2022-07-13 22:05:26,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301317181] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:05:26,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078041431] [2022-07-13 22:05:26,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:05:26,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:05:26,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:05:26,023 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:05:26,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:05:26,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 22:05:26,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:05:26,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 22:05:26,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:05:26,197 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-13 22:05:26,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:05:26,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078041431] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:26,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:05:26,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-07-13 22:05:26,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241645087] [2022-07-13 22:05:26,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:26,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:05:26,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:26,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:05:26,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:05:26,206 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 545 out of 596 [2022-07-13 22:05:26,208 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 573 transitions, 1289 flow. Second operand has 5 states, 5 states have (on average 547.4) internal successors, (2737), 5 states have internal predecessors, (2737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:26,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:26,208 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 545 of 596 [2022-07-13 22:05:26,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:26,498 INFO L129 PetriNetUnfolder]: 171/2080 cut-off events. [2022-07-13 22:05:26,498 INFO L130 PetriNetUnfolder]: For 35/65 co-relation queries the response was YES. [2022-07-13 22:05:26,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2301 conditions, 2080 events. 171/2080 cut-off events. For 35/65 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 13291 event pairs, 15 based on Foata normal form. 10/1873 useless extension candidates. Maximal degree in co-relation 2291. Up to 76 conditions per place. [2022-07-13 22:05:26,517 INFO L132 encePairwiseOnDemand]: 589/596 looper letters, 33 selfloop transitions, 5 changer transitions 0/586 dead transitions. [2022-07-13 22:05:26,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 586 transitions, 1398 flow [2022-07-13 22:05:26,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:05:26,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:05:26,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3855 transitions. [2022-07-13 22:05:26,524 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9240172579098753 [2022-07-13 22:05:26,524 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3855 transitions. [2022-07-13 22:05:26,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3855 transitions. [2022-07-13 22:05:26,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:26,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3855 transitions. [2022-07-13 22:05:26,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 550.7142857142857) internal successors, (3855), 7 states have internal predecessors, (3855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:26,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:26,536 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:26,536 INFO L186 Difference]: Start difference. First operand has 538 places, 573 transitions, 1289 flow. Second operand 7 states and 3855 transitions. [2022-07-13 22:05:26,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 586 transitions, 1398 flow [2022-07-13 22:05:26,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 586 transitions, 1381 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-07-13 22:05:26,546 INFO L242 Difference]: Finished difference. Result has 546 places, 577 transitions, 1311 flow [2022-07-13 22:05:26,547 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1311, PETRI_PLACES=546, PETRI_TRANSITIONS=577} [2022-07-13 22:05:26,548 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 19 predicate places. [2022-07-13 22:05:26,548 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 577 transitions, 1311 flow [2022-07-13 22:05:26,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 547.4) internal successors, (2737), 5 states have internal predecessors, (2737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:26,549 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:26,549 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:26,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 22:05:26,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-13 22:05:26,764 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:26,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:26,764 INFO L85 PathProgramCache]: Analyzing trace with hash -2106174958, now seen corresponding path program 1 times [2022-07-13 22:05:26,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:26,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788643125] [2022-07-13 22:05:26,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:26,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:26,869 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-13 22:05:26,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:26,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788643125] [2022-07-13 22:05:26,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788643125] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:05:26,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112614293] [2022-07-13 22:05:26,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:26,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:05:26,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:05:26,872 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:05:26,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:05:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:26,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 22:05:26,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:05:27,136 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-13 22:05:27,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:05:27,213 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-13 22:05:27,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112614293] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:05:27,213 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:05:27,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-07-13 22:05:27,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122930874] [2022-07-13 22:05:27,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:05:27,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-13 22:05:27,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:27,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-13 22:05:27,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-07-13 22:05:27,222 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 542 out of 596 [2022-07-13 22:05:27,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 577 transitions, 1311 flow. Second operand has 22 states, 22 states have (on average 545.0454545454545) internal successors, (11991), 22 states have internal predecessors, (11991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:27,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:27,229 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 542 of 596 [2022-07-13 22:05:27,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:27,620 INFO L129 PetriNetUnfolder]: 51/742 cut-off events. [2022-07-13 22:05:27,620 INFO L130 PetriNetUnfolder]: For 51/67 co-relation queries the response was YES. [2022-07-13 22:05:27,625 INFO L84 FinitePrefix]: Finished finitePrefix Result has 948 conditions, 742 events. 51/742 cut-off events. For 51/67 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2747 event pairs, 0 based on Foata normal form. 4/689 useless extension candidates. Maximal degree in co-relation 933. Up to 25 conditions per place. [2022-07-13 22:05:27,627 INFO L132 encePairwiseOnDemand]: 580/596 looper letters, 36 selfloop transitions, 34 changer transitions 0/605 dead transitions. [2022-07-13 22:05:27,627 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 605 transitions, 1563 flow [2022-07-13 22:05:27,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:05:27,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:05:27,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 9288 transitions. [2022-07-13 22:05:27,640 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9166995657323332 [2022-07-13 22:05:27,640 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 9288 transitions. [2022-07-13 22:05:27,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 9288 transitions. [2022-07-13 22:05:27,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:27,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 9288 transitions. [2022-07-13 22:05:27,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 546.3529411764706) internal successors, (9288), 17 states have internal predecessors, (9288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:27,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 596.0) internal successors, (10728), 18 states have internal predecessors, (10728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:27,667 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 596.0) internal successors, (10728), 18 states have internal predecessors, (10728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:27,667 INFO L186 Difference]: Start difference. First operand has 546 places, 577 transitions, 1311 flow. Second operand 17 states and 9288 transitions. [2022-07-13 22:05:27,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 605 transitions, 1563 flow [2022-07-13 22:05:27,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 605 transitions, 1562 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:05:27,677 INFO L242 Difference]: Finished difference. Result has 564 places, 591 transitions, 1485 flow [2022-07-13 22:05:27,678 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1485, PETRI_PLACES=564, PETRI_TRANSITIONS=591} [2022-07-13 22:05:27,678 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 37 predicate places. [2022-07-13 22:05:27,679 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 591 transitions, 1485 flow [2022-07-13 22:05:27,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 545.0454545454545) internal successors, (11991), 22 states have internal predecessors, (11991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:27,682 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:27,682 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:27,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 22:05:27,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:05:27,893 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:27,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:27,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1039231050, now seen corresponding path program 2 times [2022-07-13 22:05:27,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:27,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917556622] [2022-07-13 22:05:27,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:27,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:27,952 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:05:27,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:27,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917556622] [2022-07-13 22:05:27,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917556622] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:27,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:27,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:05:27,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314530616] [2022-07-13 22:05:27,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:27,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:05:27,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:27,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:05:27,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:05:27,956 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 545 out of 596 [2022-07-13 22:05:27,958 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 591 transitions, 1485 flow. Second operand has 5 states, 5 states have (on average 547.4) internal successors, (2737), 5 states have internal predecessors, (2737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:27,958 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:27,958 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 545 of 596 [2022-07-13 22:05:27,958 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:28,169 INFO L129 PetriNetUnfolder]: 157/1286 cut-off events. [2022-07-13 22:05:28,170 INFO L130 PetriNetUnfolder]: For 118/128 co-relation queries the response was YES. [2022-07-13 22:05:28,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1648 conditions, 1286 events. 157/1286 cut-off events. For 118/128 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6766 event pairs, 43 based on Foata normal form. 0/1143 useless extension candidates. Maximal degree in co-relation 1630. Up to 146 conditions per place. [2022-07-13 22:05:28,180 INFO L132 encePairwiseOnDemand]: 589/596 looper letters, 32 selfloop transitions, 5 changer transitions 0/603 dead transitions. [2022-07-13 22:05:28,180 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 603 transitions, 1589 flow [2022-07-13 22:05:28,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:05:28,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:05:28,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3854 transitions. [2022-07-13 22:05:28,186 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.923777564717162 [2022-07-13 22:05:28,186 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3854 transitions. [2022-07-13 22:05:28,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3854 transitions. [2022-07-13 22:05:28,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:28,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3854 transitions. [2022-07-13 22:05:28,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 550.5714285714286) internal successors, (3854), 7 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:28,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:28,197 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:28,197 INFO L186 Difference]: Start difference. First operand has 564 places, 591 transitions, 1485 flow. Second operand 7 states and 3854 transitions. [2022-07-13 22:05:28,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 603 transitions, 1589 flow [2022-07-13 22:05:28,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 603 transitions, 1544 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-07-13 22:05:28,205 INFO L242 Difference]: Finished difference. Result has 567 places, 595 transitions, 1479 flow [2022-07-13 22:05:28,206 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1440, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=586, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1479, PETRI_PLACES=567, PETRI_TRANSITIONS=595} [2022-07-13 22:05:28,207 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 40 predicate places. [2022-07-13 22:05:28,207 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 595 transitions, 1479 flow [2022-07-13 22:05:28,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 547.4) internal successors, (2737), 5 states have internal predecessors, (2737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:28,208 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:28,208 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:28,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 22:05:28,208 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:28,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:28,209 INFO L85 PathProgramCache]: Analyzing trace with hash 514282158, now seen corresponding path program 1 times [2022-07-13 22:05:28,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:28,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541735832] [2022-07-13 22:05:28,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:28,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:28,303 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:05:28,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:28,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541735832] [2022-07-13 22:05:28,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541735832] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:28,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:28,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:05:28,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780365515] [2022-07-13 22:05:28,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:28,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:05:28,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:28,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:05:28,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:05:28,307 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 531 out of 596 [2022-07-13 22:05:28,309 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 595 transitions, 1479 flow. Second operand has 7 states, 7 states have (on average 535.4285714285714) internal successors, (3748), 7 states have internal predecessors, (3748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:28,309 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:28,309 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 531 of 596 [2022-07-13 22:05:28,309 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:28,506 INFO L129 PetriNetUnfolder]: 54/846 cut-off events. [2022-07-13 22:05:28,506 INFO L130 PetriNetUnfolder]: For 71/87 co-relation queries the response was YES. [2022-07-13 22:05:28,516 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1197 conditions, 846 events. 54/846 cut-off events. For 71/87 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3619 event pairs, 0 based on Foata normal form. 4/801 useless extension candidates. Maximal degree in co-relation 1174. Up to 83 conditions per place. [2022-07-13 22:05:28,520 INFO L132 encePairwiseOnDemand]: 588/596 looper letters, 38 selfloop transitions, 4 changer transitions 4/607 dead transitions. [2022-07-13 22:05:28,520 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 607 transitions, 1595 flow [2022-07-13 22:05:28,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:05:28,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:05:28,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3764 transitions. [2022-07-13 22:05:28,528 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9022051773729626 [2022-07-13 22:05:28,528 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3764 transitions. [2022-07-13 22:05:28,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3764 transitions. [2022-07-13 22:05:28,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:28,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3764 transitions. [2022-07-13 22:05:28,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 537.7142857142857) internal successors, (3764), 7 states have internal predecessors, (3764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:28,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:28,542 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:28,543 INFO L186 Difference]: Start difference. First operand has 567 places, 595 transitions, 1479 flow. Second operand 7 states and 3764 transitions. [2022-07-13 22:05:28,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 607 transitions, 1595 flow [2022-07-13 22:05:28,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 607 transitions, 1594 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:05:28,553 INFO L242 Difference]: Finished difference. Result has 577 places, 598 transitions, 1512 flow [2022-07-13 22:05:28,554 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1478, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1512, PETRI_PLACES=577, PETRI_TRANSITIONS=598} [2022-07-13 22:05:28,555 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 50 predicate places. [2022-07-13 22:05:28,556 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 598 transitions, 1512 flow [2022-07-13 22:05:28,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 535.4285714285714) internal successors, (3748), 7 states have internal predecessors, (3748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:28,557 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:28,557 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:28,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 22:05:28,557 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:28,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:28,558 INFO L85 PathProgramCache]: Analyzing trace with hash 860118038, now seen corresponding path program 1 times [2022-07-13 22:05:28,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:28,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587826948] [2022-07-13 22:05:28,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:28,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:28,667 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:05:28,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:28,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587826948] [2022-07-13 22:05:28,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587826948] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:28,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:28,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:05:28,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728371387] [2022-07-13 22:05:28,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:28,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:05:28,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:28,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:05:28,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:05:28,672 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 531 out of 596 [2022-07-13 22:05:28,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 598 transitions, 1512 flow. Second operand has 7 states, 7 states have (on average 535.4285714285714) internal successors, (3748), 7 states have internal predecessors, (3748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:28,674 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:28,674 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 531 of 596 [2022-07-13 22:05:28,674 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:28,906 INFO L129 PetriNetUnfolder]: 56/894 cut-off events. [2022-07-13 22:05:28,907 INFO L130 PetriNetUnfolder]: For 127/143 co-relation queries the response was YES. [2022-07-13 22:05:28,914 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1387 conditions, 894 events. 56/894 cut-off events. For 127/143 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4018 event pairs, 0 based on Foata normal form. 4/849 useless extension candidates. Maximal degree in co-relation 1359. Up to 125 conditions per place. [2022-07-13 22:05:28,917 INFO L132 encePairwiseOnDemand]: 589/596 looper letters, 42 selfloop transitions, 2 changer transitions 5/611 dead transitions. [2022-07-13 22:05:28,917 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 611 transitions, 1650 flow [2022-07-13 22:05:28,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:05:28,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:05:28,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3765 transitions. [2022-07-13 22:05:28,922 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9024448705656759 [2022-07-13 22:05:28,922 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3765 transitions. [2022-07-13 22:05:28,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3765 transitions. [2022-07-13 22:05:28,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:28,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3765 transitions. [2022-07-13 22:05:28,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 537.8571428571429) internal successors, (3765), 7 states have internal predecessors, (3765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:28,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:28,932 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:28,932 INFO L186 Difference]: Start difference. First operand has 577 places, 598 transitions, 1512 flow. Second operand 7 states and 3765 transitions. [2022-07-13 22:05:28,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 611 transitions, 1650 flow [2022-07-13 22:05:28,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 611 transitions, 1632 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-07-13 22:05:28,942 INFO L242 Difference]: Finished difference. Result has 581 places, 599 transitions, 1526 flow [2022-07-13 22:05:28,944 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1526, PETRI_PLACES=581, PETRI_TRANSITIONS=599} [2022-07-13 22:05:28,944 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 54 predicate places. [2022-07-13 22:05:28,944 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 599 transitions, 1526 flow [2022-07-13 22:05:28,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 535.4285714285714) internal successors, (3748), 7 states have internal predecessors, (3748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:28,945 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:28,945 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:28,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 22:05:28,945 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:28,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:28,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1515986788, now seen corresponding path program 1 times [2022-07-13 22:05:28,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:28,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144425885] [2022-07-13 22:05:28,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:28,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:28,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:28,998 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:05:28,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:28,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144425885] [2022-07-13 22:05:28,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144425885] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:28,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:28,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:05:28,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570942027] [2022-07-13 22:05:28,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:28,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:05:28,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:28,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:05:28,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:05:29,000 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 548 out of 596 [2022-07-13 22:05:29,002 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 599 transitions, 1526 flow. Second operand has 4 states, 4 states have (on average 550.75) internal successors, (2203), 4 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:29,002 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:29,002 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 548 of 596 [2022-07-13 22:05:29,002 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:29,195 INFO L129 PetriNetUnfolder]: 143/1364 cut-off events. [2022-07-13 22:05:29,196 INFO L130 PetriNetUnfolder]: For 155/166 co-relation queries the response was YES. [2022-07-13 22:05:29,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1898 conditions, 1364 events. 143/1364 cut-off events. For 155/166 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 7411 event pairs, 36 based on Foata normal form. 5/1238 useless extension candidates. Maximal degree in co-relation 1868. Up to 145 conditions per place. [2022-07-13 22:05:29,206 INFO L132 encePairwiseOnDemand]: 592/596 looper letters, 29 selfloop transitions, 3 changer transitions 2/606 dead transitions. [2022-07-13 22:05:29,206 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 606 transitions, 1614 flow [2022-07-13 22:05:29,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:05:29,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:05:29,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2770 transitions. [2022-07-13 22:05:29,210 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9295302013422819 [2022-07-13 22:05:29,210 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2770 transitions. [2022-07-13 22:05:29,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2770 transitions. [2022-07-13 22:05:29,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:29,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2770 transitions. [2022-07-13 22:05:29,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 554.0) internal successors, (2770), 5 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:29,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 596.0) internal successors, (3576), 6 states have internal predecessors, (3576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:29,216 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 596.0) internal successors, (3576), 6 states have internal predecessors, (3576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:29,216 INFO L186 Difference]: Start difference. First operand has 581 places, 599 transitions, 1526 flow. Second operand 5 states and 2770 transitions. [2022-07-13 22:05:29,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 606 transitions, 1614 flow [2022-07-13 22:05:29,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 606 transitions, 1604 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-07-13 22:05:29,225 INFO L242 Difference]: Finished difference. Result has 579 places, 599 transitions, 1529 flow [2022-07-13 22:05:29,226 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1529, PETRI_PLACES=579, PETRI_TRANSITIONS=599} [2022-07-13 22:05:29,226 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 52 predicate places. [2022-07-13 22:05:29,226 INFO L495 AbstractCegarLoop]: Abstraction has has 579 places, 599 transitions, 1529 flow [2022-07-13 22:05:29,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 550.75) internal successors, (2203), 4 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:29,227 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:29,227 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:29,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 22:05:29,227 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:29,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:29,228 INFO L85 PathProgramCache]: Analyzing trace with hash -886073758, now seen corresponding path program 1 times [2022-07-13 22:05:29,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:29,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396902721] [2022-07-13 22:05:29,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:29,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:29,280 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:05:29,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:29,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396902721] [2022-07-13 22:05:29,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396902721] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:29,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:29,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:05:29,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134327528] [2022-07-13 22:05:29,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:29,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:05:29,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:29,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:05:29,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:05:29,284 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 548 out of 596 [2022-07-13 22:05:29,285 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 599 transitions, 1529 flow. Second operand has 4 states, 4 states have (on average 550.75) internal successors, (2203), 4 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:29,286 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:29,286 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 548 of 596 [2022-07-13 22:05:29,286 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:29,584 INFO L129 PetriNetUnfolder]: 158/2157 cut-off events. [2022-07-13 22:05:29,584 INFO L130 PetriNetUnfolder]: For 131/155 co-relation queries the response was YES. [2022-07-13 22:05:29,600 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2692 conditions, 2157 events. 158/2157 cut-off events. For 131/155 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 14022 event pairs, 12 based on Foata normal form. 8/1962 useless extension candidates. Maximal degree in co-relation 2663. Up to 69 conditions per place. [2022-07-13 22:05:29,607 INFO L132 encePairwiseOnDemand]: 592/596 looper letters, 30 selfloop transitions, 3 changer transitions 2/607 dead transitions. [2022-07-13 22:05:29,608 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 607 transitions, 1622 flow [2022-07-13 22:05:29,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:05:29,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:05:29,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2771 transitions. [2022-07-13 22:05:29,612 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9298657718120805 [2022-07-13 22:05:29,612 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2771 transitions. [2022-07-13 22:05:29,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2771 transitions. [2022-07-13 22:05:29,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:29,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2771 transitions. [2022-07-13 22:05:29,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 554.2) internal successors, (2771), 5 states have internal predecessors, (2771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:29,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 596.0) internal successors, (3576), 6 states have internal predecessors, (3576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:29,619 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 596.0) internal successors, (3576), 6 states have internal predecessors, (3576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:29,619 INFO L186 Difference]: Start difference. First operand has 579 places, 599 transitions, 1529 flow. Second operand 5 states and 2771 transitions. [2022-07-13 22:05:29,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 607 transitions, 1622 flow [2022-07-13 22:05:29,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 607 transitions, 1613 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:29,632 INFO L242 Difference]: Finished difference. Result has 584 places, 599 transitions, 1537 flow [2022-07-13 22:05:29,633 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=577, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1537, PETRI_PLACES=584, PETRI_TRANSITIONS=599} [2022-07-13 22:05:29,634 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 57 predicate places. [2022-07-13 22:05:29,634 INFO L495 AbstractCegarLoop]: Abstraction has has 584 places, 599 transitions, 1537 flow [2022-07-13 22:05:29,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 550.75) internal successors, (2203), 4 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:29,635 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:29,635 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:29,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 22:05:29,635 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:29,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:29,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1826489834, now seen corresponding path program 1 times [2022-07-13 22:05:29,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:29,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440691387] [2022-07-13 22:05:29,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:29,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:29,688 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:05:29,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:29,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440691387] [2022-07-13 22:05:29,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440691387] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:29,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:29,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:29,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718223495] [2022-07-13 22:05:29,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:29,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:29,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:29,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:29,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:29,692 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 549 out of 596 [2022-07-13 22:05:29,693 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 599 transitions, 1537 flow. Second operand has 3 states, 3 states have (on average 552.0) internal successors, (1656), 3 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:29,693 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:29,693 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 549 of 596 [2022-07-13 22:05:29,693 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:29,951 INFO L129 PetriNetUnfolder]: 159/1654 cut-off events. [2022-07-13 22:05:29,951 INFO L130 PetriNetUnfolder]: For 141/159 co-relation queries the response was YES. [2022-07-13 22:05:29,964 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2126 conditions, 1654 events. 159/1654 cut-off events. For 141/159 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 10205 event pairs, 36 based on Foata normal form. 0/1485 useless extension candidates. Maximal degree in co-relation 2094. Up to 111 conditions per place. [2022-07-13 22:05:29,968 INFO L132 encePairwiseOnDemand]: 591/596 looper letters, 24 selfloop transitions, 4 changer transitions 0/606 dead transitions. [2022-07-13 22:05:29,968 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 606 transitions, 1609 flow [2022-07-13 22:05:29,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:29,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:29,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1676 transitions. [2022-07-13 22:05:29,971 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9373601789709173 [2022-07-13 22:05:29,971 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1676 transitions. [2022-07-13 22:05:29,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1676 transitions. [2022-07-13 22:05:29,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:29,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1676 transitions. [2022-07-13 22:05:29,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 558.6666666666666) internal successors, (1676), 3 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:29,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:29,976 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:29,976 INFO L186 Difference]: Start difference. First operand has 584 places, 599 transitions, 1537 flow. Second operand 3 states and 1676 transitions. [2022-07-13 22:05:29,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 606 transitions, 1609 flow [2022-07-13 22:05:29,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 606 transitions, 1600 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:29,985 INFO L242 Difference]: Finished difference. Result has 585 places, 600 transitions, 1546 flow [2022-07-13 22:05:29,985 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1528, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1546, PETRI_PLACES=585, PETRI_TRANSITIONS=600} [2022-07-13 22:05:29,986 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 58 predicate places. [2022-07-13 22:05:29,986 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 600 transitions, 1546 flow [2022-07-13 22:05:29,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 552.0) internal successors, (1656), 3 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:29,987 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:29,987 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:29,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 22:05:29,987 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:29,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:29,987 INFO L85 PathProgramCache]: Analyzing trace with hash -507542535, now seen corresponding path program 1 times [2022-07-13 22:05:29,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:29,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856917047] [2022-07-13 22:05:29,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:29,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:30,047 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:05:30,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:30,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856917047] [2022-07-13 22:05:30,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856917047] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:30,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:30,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:30,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844999091] [2022-07-13 22:05:30,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:30,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:30,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:30,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:30,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:30,051 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 549 out of 596 [2022-07-13 22:05:30,053 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 600 transitions, 1546 flow. Second operand has 3 states, 3 states have (on average 552.0) internal successors, (1656), 3 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:30,053 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:30,053 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 549 of 596 [2022-07-13 22:05:30,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:30,486 INFO L129 PetriNetUnfolder]: 182/2578 cut-off events. [2022-07-13 22:05:30,486 INFO L130 PetriNetUnfolder]: For 125/172 co-relation queries the response was YES. [2022-07-13 22:05:30,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3214 conditions, 2578 events. 182/2578 cut-off events. For 125/172 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 17313 event pairs, 14 based on Foata normal form. 2/2360 useless extension candidates. Maximal degree in co-relation 3181. Up to 60 conditions per place. [2022-07-13 22:05:30,504 INFO L132 encePairwiseOnDemand]: 591/596 looper letters, 25 selfloop transitions, 4 changer transitions 0/608 dead transitions. [2022-07-13 22:05:30,504 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 608 transitions, 1623 flow [2022-07-13 22:05:30,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:30,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:30,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1677 transitions. [2022-07-13 22:05:30,507 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9379194630872483 [2022-07-13 22:05:30,507 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1677 transitions. [2022-07-13 22:05:30,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1677 transitions. [2022-07-13 22:05:30,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:30,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1677 transitions. [2022-07-13 22:05:30,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 559.0) internal successors, (1677), 3 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:30,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:30,511 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:30,511 INFO L186 Difference]: Start difference. First operand has 585 places, 600 transitions, 1546 flow. Second operand 3 states and 1677 transitions. [2022-07-13 22:05:30,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 608 transitions, 1623 flow [2022-07-13 22:05:30,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 608 transitions, 1619 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:05:30,520 INFO L242 Difference]: Finished difference. Result has 587 places, 601 transitions, 1560 flow [2022-07-13 22:05:30,521 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1560, PETRI_PLACES=587, PETRI_TRANSITIONS=601} [2022-07-13 22:05:30,522 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 60 predicate places. [2022-07-13 22:05:30,522 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 601 transitions, 1560 flow [2022-07-13 22:05:30,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 552.0) internal successors, (1656), 3 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:30,522 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:30,522 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:30,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 22:05:30,523 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:30,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:30,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1894501790, now seen corresponding path program 1 times [2022-07-13 22:05:30,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:30,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151550759] [2022-07-13 22:05:30,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:30,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:30,577 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:05:30,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:30,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151550759] [2022-07-13 22:05:30,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151550759] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:30,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:30,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:30,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498692199] [2022-07-13 22:05:30,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:30,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:30,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:30,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:30,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:30,581 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 550 out of 596 [2022-07-13 22:05:30,582 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 601 transitions, 1560 flow. Second operand has 3 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:30,582 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:30,582 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 550 of 596 [2022-07-13 22:05:30,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:31,053 INFO L129 PetriNetUnfolder]: 225/3066 cut-off events. [2022-07-13 22:05:31,053 INFO L130 PetriNetUnfolder]: For 240/296 co-relation queries the response was YES. [2022-07-13 22:05:31,076 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4006 conditions, 3066 events. 225/3066 cut-off events. For 240/296 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 22356 event pairs, 31 based on Foata normal form. 4/2849 useless extension candidates. Maximal degree in co-relation 3972. Up to 95 conditions per place. [2022-07-13 22:05:31,084 INFO L132 encePairwiseOnDemand]: 589/596 looper letters, 26 selfloop transitions, 5 changer transitions 0/612 dead transitions. [2022-07-13 22:05:31,085 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 612 transitions, 1650 flow [2022-07-13 22:05:31,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:31,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:31,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1683 transitions. [2022-07-13 22:05:31,088 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9412751677852349 [2022-07-13 22:05:31,088 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1683 transitions. [2022-07-13 22:05:31,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1683 transitions. [2022-07-13 22:05:31,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:31,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1683 transitions. [2022-07-13 22:05:31,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 561.0) internal successors, (1683), 3 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:31,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:31,092 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:31,093 INFO L186 Difference]: Start difference. First operand has 587 places, 601 transitions, 1560 flow. Second operand 3 states and 1683 transitions. [2022-07-13 22:05:31,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 612 transitions, 1650 flow [2022-07-13 22:05:31,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 612 transitions, 1646 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:05:31,103 INFO L242 Difference]: Finished difference. Result has 590 places, 604 transitions, 1595 flow [2022-07-13 22:05:31,104 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1556, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1595, PETRI_PLACES=590, PETRI_TRANSITIONS=604} [2022-07-13 22:05:31,105 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 63 predicate places. [2022-07-13 22:05:31,105 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 604 transitions, 1595 flow [2022-07-13 22:05:31,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:31,105 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:31,106 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:31,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 22:05:31,106 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:31,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:31,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1896665874, now seen corresponding path program 2 times [2022-07-13 22:05:31,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:31,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224556758] [2022-07-13 22:05:31,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:31,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:31,160 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:05:31,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:31,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224556758] [2022-07-13 22:05:31,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224556758] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:31,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:31,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:31,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388050920] [2022-07-13 22:05:31,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:31,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:31,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:31,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:31,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:31,164 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 550 out of 596 [2022-07-13 22:05:31,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 604 transitions, 1595 flow. Second operand has 3 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:31,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:31,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 550 of 596 [2022-07-13 22:05:31,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:31,536 INFO L129 PetriNetUnfolder]: 221/2931 cut-off events. [2022-07-13 22:05:31,536 INFO L130 PetriNetUnfolder]: For 311/371 co-relation queries the response was YES. [2022-07-13 22:05:31,586 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3890 conditions, 2931 events. 221/2931 cut-off events. For 311/371 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 20835 event pairs, 40 based on Foata normal form. 3/2717 useless extension candidates. Maximal degree in co-relation 3855. Up to 128 conditions per place. [2022-07-13 22:05:31,592 INFO L132 encePairwiseOnDemand]: 592/596 looper letters, 26 selfloop transitions, 2 changer transitions 3/612 dead transitions. [2022-07-13 22:05:31,593 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 612 transitions, 1676 flow [2022-07-13 22:05:31,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:31,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:31,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1680 transitions. [2022-07-13 22:05:31,596 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9395973154362416 [2022-07-13 22:05:31,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1680 transitions. [2022-07-13 22:05:31,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1680 transitions. [2022-07-13 22:05:31,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:31,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1680 transitions. [2022-07-13 22:05:31,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 560.0) internal successors, (1680), 3 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:31,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:31,602 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:31,602 INFO L186 Difference]: Start difference. First operand has 590 places, 604 transitions, 1595 flow. Second operand 3 states and 1680 transitions. [2022-07-13 22:05:31,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 612 transitions, 1676 flow [2022-07-13 22:05:31,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 590 places, 612 transitions, 1666 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:31,614 INFO L242 Difference]: Finished difference. Result has 591 places, 604 transitions, 1595 flow [2022-07-13 22:05:31,615 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1585, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1595, PETRI_PLACES=591, PETRI_TRANSITIONS=604} [2022-07-13 22:05:31,616 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 64 predicate places. [2022-07-13 22:05:31,616 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 604 transitions, 1595 flow [2022-07-13 22:05:31,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:31,616 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:31,616 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:31,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 22:05:31,617 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:31,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:31,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1402262166, now seen corresponding path program 1 times [2022-07-13 22:05:31,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:31,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553667622] [2022-07-13 22:05:31,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:31,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:31,672 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:05:31,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:31,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553667622] [2022-07-13 22:05:31,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553667622] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:31,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:31,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:31,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627425231] [2022-07-13 22:05:31,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:31,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:31,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:31,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:31,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:31,677 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 550 out of 596 [2022-07-13 22:05:31,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 604 transitions, 1595 flow. Second operand has 3 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:31,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:31,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 550 of 596 [2022-07-13 22:05:31,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:32,234 INFO L129 PetriNetUnfolder]: 236/3053 cut-off events. [2022-07-13 22:05:32,235 INFO L130 PetriNetUnfolder]: For 365/427 co-relation queries the response was YES. [2022-07-13 22:05:32,249 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3964 conditions, 3053 events. 236/3053 cut-off events. For 365/427 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 22049 event pairs, 39 based on Foata normal form. 5/2822 useless extension candidates. Maximal degree in co-relation 3928. Up to 116 conditions per place. [2022-07-13 22:05:32,257 INFO L132 encePairwiseOnDemand]: 592/596 looper letters, 26 selfloop transitions, 3 changer transitions 3/613 dead transitions. [2022-07-13 22:05:32,257 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 613 transitions, 1684 flow [2022-07-13 22:05:32,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:32,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:32,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1681 transitions. [2022-07-13 22:05:32,260 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9401565995525727 [2022-07-13 22:05:32,260 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1681 transitions. [2022-07-13 22:05:32,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1681 transitions. [2022-07-13 22:05:32,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:32,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1681 transitions. [2022-07-13 22:05:32,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 560.3333333333334) internal successors, (1681), 3 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:32,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:32,265 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:32,265 INFO L186 Difference]: Start difference. First operand has 591 places, 604 transitions, 1595 flow. Second operand 3 states and 1681 transitions. [2022-07-13 22:05:32,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 613 transitions, 1684 flow [2022-07-13 22:05:32,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 613 transitions, 1682 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:05:32,275 INFO L242 Difference]: Finished difference. Result has 593 places, 604 transitions, 1606 flow [2022-07-13 22:05:32,276 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1593, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1606, PETRI_PLACES=593, PETRI_TRANSITIONS=604} [2022-07-13 22:05:32,276 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 66 predicate places. [2022-07-13 22:05:32,276 INFO L495 AbstractCegarLoop]: Abstraction has has 593 places, 604 transitions, 1606 flow [2022-07-13 22:05:32,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:32,277 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:32,277 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:32,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 22:05:32,277 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:32,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:32,278 INFO L85 PathProgramCache]: Analyzing trace with hash 780994070, now seen corresponding path program 2 times [2022-07-13 22:05:32,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:32,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167637592] [2022-07-13 22:05:32,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:32,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:32,328 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:05:32,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:32,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167637592] [2022-07-13 22:05:32,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167637592] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:32,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:32,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:05:32,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36433977] [2022-07-13 22:05:32,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:32,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:05:32,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:32,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:05:32,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:05:32,332 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 550 out of 596 [2022-07-13 22:05:32,333 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 604 transitions, 1606 flow. Second operand has 3 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:32,333 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:32,333 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 550 of 596 [2022-07-13 22:05:32,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:32,782 INFO L129 PetriNetUnfolder]: 215/2844 cut-off events. [2022-07-13 22:05:32,782 INFO L130 PetriNetUnfolder]: For 428/494 co-relation queries the response was YES. [2022-07-13 22:05:32,803 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3790 conditions, 2844 events. 215/2844 cut-off events. For 428/494 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 19723 event pairs, 26 based on Foata normal form. 4/2642 useless extension candidates. Maximal degree in co-relation 3753. Up to 74 conditions per place. [2022-07-13 22:05:32,811 INFO L132 encePairwiseOnDemand]: 589/596 looper letters, 27 selfloop transitions, 5 changer transitions 3/616 dead transitions. [2022-07-13 22:05:32,812 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 616 transitions, 1720 flow [2022-07-13 22:05:32,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:05:32,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:05:32,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1683 transitions. [2022-07-13 22:05:32,816 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9412751677852349 [2022-07-13 22:05:32,816 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1683 transitions. [2022-07-13 22:05:32,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1683 transitions. [2022-07-13 22:05:32,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:32,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1683 transitions. [2022-07-13 22:05:32,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 561.0) internal successors, (1683), 3 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:32,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:32,821 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:32,821 INFO L186 Difference]: Start difference. First operand has 593 places, 604 transitions, 1606 flow. Second operand 3 states and 1683 transitions. [2022-07-13 22:05:32,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 616 transitions, 1720 flow [2022-07-13 22:05:32,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 616 transitions, 1717 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:05:32,835 INFO L242 Difference]: Finished difference. Result has 596 places, 605 transitions, 1628 flow [2022-07-13 22:05:32,836 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1603, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1628, PETRI_PLACES=596, PETRI_TRANSITIONS=605} [2022-07-13 22:05:32,836 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 69 predicate places. [2022-07-13 22:05:32,836 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 605 transitions, 1628 flow [2022-07-13 22:05:32,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:32,837 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:32,837 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:32,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 22:05:32,838 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:32,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:32,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1503462978, now seen corresponding path program 1 times [2022-07-13 22:05:32,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:32,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882968203] [2022-07-13 22:05:32,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:32,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:32,913 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:05:32,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:32,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882968203] [2022-07-13 22:05:32,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882968203] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:32,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:32,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:05:32,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426917526] [2022-07-13 22:05:32,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:32,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:05:32,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:32,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:05:32,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:05:32,917 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 514 out of 596 [2022-07-13 22:05:32,918 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 605 transitions, 1628 flow. Second operand has 5 states, 5 states have (on average 518.8) internal successors, (2594), 5 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:32,918 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:32,918 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 514 of 596 [2022-07-13 22:05:32,919 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:33,664 INFO L129 PetriNetUnfolder]: 937/5424 cut-off events. [2022-07-13 22:05:33,664 INFO L130 PetriNetUnfolder]: For 2143/2145 co-relation queries the response was YES. [2022-07-13 22:05:33,696 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8108 conditions, 5424 events. 937/5424 cut-off events. For 2143/2145 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 49424 event pairs, 134 based on Foata normal form. 42/4876 useless extension candidates. Maximal degree in co-relation 8070. Up to 965 conditions per place. [2022-07-13 22:05:33,708 INFO L132 encePairwiseOnDemand]: 585/596 looper letters, 75 selfloop transitions, 12 changer transitions 15/647 dead transitions. [2022-07-13 22:05:33,708 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 647 transitions, 2021 flow [2022-07-13 22:05:33,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:05:33,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:05:33,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3180 transitions. [2022-07-13 22:05:33,714 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.889261744966443 [2022-07-13 22:05:33,715 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3180 transitions. [2022-07-13 22:05:33,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3180 transitions. [2022-07-13 22:05:33,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:33,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3180 transitions. [2022-07-13 22:05:33,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 530.0) internal successors, (3180), 6 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:33,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 596.0) internal successors, (4172), 7 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:33,721 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 596.0) internal successors, (4172), 7 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:33,721 INFO L186 Difference]: Start difference. First operand has 596 places, 605 transitions, 1628 flow. Second operand 6 states and 3180 transitions. [2022-07-13 22:05:33,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 647 transitions, 2021 flow [2022-07-13 22:05:33,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 647 transitions, 1983 flow, removed 10 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:33,792 INFO L242 Difference]: Finished difference. Result has 603 places, 611 transitions, 1692 flow [2022-07-13 22:05:33,792 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1610, PETRI_DIFFERENCE_MINUEND_PLACES=594, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1692, PETRI_PLACES=603, PETRI_TRANSITIONS=611} [2022-07-13 22:05:33,792 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 76 predicate places. [2022-07-13 22:05:33,792 INFO L495 AbstractCegarLoop]: Abstraction has has 603 places, 611 transitions, 1692 flow [2022-07-13 22:05:33,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 518.8) internal successors, (2594), 5 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:33,793 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:33,793 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:33,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 22:05:33,793 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:33,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:33,794 INFO L85 PathProgramCache]: Analyzing trace with hash 770364222, now seen corresponding path program 2 times [2022-07-13 22:05:33,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:33,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793874317] [2022-07-13 22:05:33,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:33,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:33,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:33,879 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:05:33,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:33,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793874317] [2022-07-13 22:05:33,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793874317] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:33,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:33,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:05:33,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956109815] [2022-07-13 22:05:33,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:33,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:05:33,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:33,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:05:33,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:05:33,884 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 596 [2022-07-13 22:05:33,886 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 611 transitions, 1692 flow. Second operand has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:33,886 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:33,886 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 596 [2022-07-13 22:05:33,886 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:34,970 INFO L129 PetriNetUnfolder]: 921/5757 cut-off events. [2022-07-13 22:05:34,970 INFO L130 PetriNetUnfolder]: For 1704/1707 co-relation queries the response was YES. [2022-07-13 22:05:35,018 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8870 conditions, 5757 events. 921/5757 cut-off events. For 1704/1707 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 53459 event pairs, 362 based on Foata normal form. 5/5211 useless extension candidates. Maximal degree in co-relation 8829. Up to 772 conditions per place. [2022-07-13 22:05:35,033 INFO L132 encePairwiseOnDemand]: 581/596 looper letters, 75 selfloop transitions, 14 changer transitions 33/665 dead transitions. [2022-07-13 22:05:35,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 665 transitions, 2113 flow [2022-07-13 22:05:35,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:05:35,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:05:35,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3693 transitions. [2022-07-13 22:05:35,037 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8851869606903164 [2022-07-13 22:05:35,038 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3693 transitions. [2022-07-13 22:05:35,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3693 transitions. [2022-07-13 22:05:35,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:35,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3693 transitions. [2022-07-13 22:05:35,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 527.5714285714286) internal successors, (3693), 7 states have internal predecessors, (3693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:35,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:35,143 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:35,144 INFO L186 Difference]: Start difference. First operand has 603 places, 611 transitions, 1692 flow. Second operand 7 states and 3693 transitions. [2022-07-13 22:05:35,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 665 transitions, 2113 flow [2022-07-13 22:05:35,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 609 places, 665 transitions, 2109 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-07-13 22:05:35,189 INFO L242 Difference]: Finished difference. Result has 612 places, 609 transitions, 1719 flow [2022-07-13 22:05:35,190 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1690, PETRI_DIFFERENCE_MINUEND_PLACES=603, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=597, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1719, PETRI_PLACES=612, PETRI_TRANSITIONS=609} [2022-07-13 22:05:35,191 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 85 predicate places. [2022-07-13 22:05:35,191 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 609 transitions, 1719 flow [2022-07-13 22:05:35,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:35,192 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:35,192 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:35,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 22:05:35,192 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:35,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:35,193 INFO L85 PathProgramCache]: Analyzing trace with hash 2012689126, now seen corresponding path program 3 times [2022-07-13 22:05:35,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:35,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306676073] [2022-07-13 22:05:35,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:35,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:35,270 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:05:35,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:35,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306676073] [2022-07-13 22:05:35,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306676073] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:35,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:35,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:05:35,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725566200] [2022-07-13 22:05:35,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:35,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:05:35,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:35,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:05:35,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:05:35,273 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 596 [2022-07-13 22:05:35,286 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 609 transitions, 1719 flow. Second operand has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:35,286 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:35,286 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 596 [2022-07-13 22:05:35,286 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:36,411 INFO L129 PetriNetUnfolder]: 925/5917 cut-off events. [2022-07-13 22:05:36,411 INFO L130 PetriNetUnfolder]: For 2111/2112 co-relation queries the response was YES. [2022-07-13 22:05:36,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8804 conditions, 5917 events. 925/5917 cut-off events. For 2111/2112 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 54581 event pairs, 392 based on Foata normal form. 5/5407 useless extension candidates. Maximal degree in co-relation 8759. Up to 950 conditions per place. [2022-07-13 22:05:36,446 INFO L132 encePairwiseOnDemand]: 579/596 looper letters, 73 selfloop transitions, 21 changer transitions 11/648 dead transitions. [2022-07-13 22:05:36,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 648 transitions, 2096 flow [2022-07-13 22:05:36,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:05:36,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:05:36,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3681 transitions. [2022-07-13 22:05:36,450 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8823106423777565 [2022-07-13 22:05:36,450 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3681 transitions. [2022-07-13 22:05:36,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3681 transitions. [2022-07-13 22:05:36,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:36,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3681 transitions. [2022-07-13 22:05:36,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 525.8571428571429) internal successors, (3681), 7 states have internal predecessors, (3681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:36,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:36,457 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:36,457 INFO L186 Difference]: Start difference. First operand has 612 places, 609 transitions, 1719 flow. Second operand 7 states and 3681 transitions. [2022-07-13 22:05:36,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 648 transitions, 2096 flow [2022-07-13 22:05:36,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 648 transitions, 2074 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-07-13 22:05:36,472 INFO L242 Difference]: Finished difference. Result has 613 places, 618 transitions, 1791 flow [2022-07-13 22:05:36,473 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1697, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1791, PETRI_PLACES=613, PETRI_TRANSITIONS=618} [2022-07-13 22:05:36,473 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 86 predicate places. [2022-07-13 22:05:36,473 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 618 transitions, 1791 flow [2022-07-13 22:05:36,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:36,474 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:36,474 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:36,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 22:05:36,475 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:36,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:36,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1139441410, now seen corresponding path program 4 times [2022-07-13 22:05:36,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:36,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921155230] [2022-07-13 22:05:36,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:36,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:36,540 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:05:36,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:36,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921155230] [2022-07-13 22:05:36,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921155230] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:36,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:36,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:05:36,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629707705] [2022-07-13 22:05:36,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:36,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:05:36,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:36,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:05:36,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:05:36,545 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 514 out of 596 [2022-07-13 22:05:36,546 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 618 transitions, 1791 flow. Second operand has 5 states, 5 states have (on average 518.8) internal successors, (2594), 5 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:36,546 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:36,546 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 514 of 596 [2022-07-13 22:05:36,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:37,602 INFO L129 PetriNetUnfolder]: 890/5834 cut-off events. [2022-07-13 22:05:37,602 INFO L130 PetriNetUnfolder]: For 2420/2431 co-relation queries the response was YES. [2022-07-13 22:05:37,627 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9106 conditions, 5834 events. 890/5834 cut-off events. For 2420/2431 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 53710 event pairs, 342 based on Foata normal form. 3/5355 useless extension candidates. Maximal degree in co-relation 9061. Up to 863 conditions per place. [2022-07-13 22:05:37,636 INFO L132 encePairwiseOnDemand]: 576/596 looper letters, 76 selfloop transitions, 22 changer transitions 20/660 dead transitions. [2022-07-13 22:05:37,636 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 660 transitions, 2172 flow [2022-07-13 22:05:37,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:05:37,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:05:37,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3693 transitions. [2022-07-13 22:05:37,639 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8851869606903164 [2022-07-13 22:05:37,639 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3693 transitions. [2022-07-13 22:05:37,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3693 transitions. [2022-07-13 22:05:37,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:37,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3693 transitions. [2022-07-13 22:05:37,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 527.5714285714286) internal successors, (3693), 7 states have internal predecessors, (3693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:37,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:37,646 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:37,646 INFO L186 Difference]: Start difference. First operand has 613 places, 618 transitions, 1791 flow. Second operand 7 states and 3693 transitions. [2022-07-13 22:05:37,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 660 transitions, 2172 flow [2022-07-13 22:05:37,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 660 transitions, 2159 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:37,664 INFO L242 Difference]: Finished difference. Result has 620 places, 618 transitions, 1833 flow [2022-07-13 22:05:37,664 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1779, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1833, PETRI_PLACES=620, PETRI_TRANSITIONS=618} [2022-07-13 22:05:37,665 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 93 predicate places. [2022-07-13 22:05:37,665 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 618 transitions, 1833 flow [2022-07-13 22:05:37,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 518.8) internal successors, (2594), 5 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:37,666 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:37,666 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:37,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 22:05:37,666 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:37,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:37,666 INFO L85 PathProgramCache]: Analyzing trace with hash 995145401, now seen corresponding path program 1 times [2022-07-13 22:05:37,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:37,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295299180] [2022-07-13 22:05:37,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:37,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:37,741 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:05:37,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:37,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295299180] [2022-07-13 22:05:37,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295299180] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:37,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:37,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:05:37,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374878622] [2022-07-13 22:05:37,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:37,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:05:37,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:37,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:05:37,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:05:37,745 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 596 [2022-07-13 22:05:37,746 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 618 transitions, 1833 flow. Second operand has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:37,747 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:37,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 596 [2022-07-13 22:05:37,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:38,568 INFO L129 PetriNetUnfolder]: 613/4518 cut-off events. [2022-07-13 22:05:38,568 INFO L130 PetriNetUnfolder]: For 6066/6591 co-relation queries the response was YES. [2022-07-13 22:05:38,593 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7145 conditions, 4518 events. 613/4518 cut-off events. For 6066/6591 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 37419 event pairs, 81 based on Foata normal form. 138/4356 useless extension candidates. Maximal degree in co-relation 7097. Up to 565 conditions per place. [2022-07-13 22:05:38,600 INFO L132 encePairwiseOnDemand]: 588/596 looper letters, 81 selfloop transitions, 6 changer transitions 7/648 dead transitions. [2022-07-13 22:05:38,600 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 648 transitions, 2230 flow [2022-07-13 22:05:38,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:05:38,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:05:38,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3159 transitions. [2022-07-13 22:05:38,603 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8833892617449665 [2022-07-13 22:05:38,603 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3159 transitions. [2022-07-13 22:05:38,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3159 transitions. [2022-07-13 22:05:38,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:38,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3159 transitions. [2022-07-13 22:05:38,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 526.5) internal successors, (3159), 6 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 596.0) internal successors, (4172), 7 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,609 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 596.0) internal successors, (4172), 7 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,609 INFO L186 Difference]: Start difference. First operand has 620 places, 618 transitions, 1833 flow. Second operand 6 states and 3159 transitions. [2022-07-13 22:05:38,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 648 transitions, 2230 flow [2022-07-13 22:05:38,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 648 transitions, 2180 flow, removed 13 selfloop flow, removed 8 redundant places. [2022-07-13 22:05:38,627 INFO L242 Difference]: Finished difference. Result has 612 places, 618 transitions, 1820 flow [2022-07-13 22:05:38,628 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1803, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=612, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1820, PETRI_PLACES=612, PETRI_TRANSITIONS=618} [2022-07-13 22:05:38,628 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 85 predicate places. [2022-07-13 22:05:38,628 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 618 transitions, 1820 flow [2022-07-13 22:05:38,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,629 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:38,629 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:38,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 22:05:38,629 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:38,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:38,630 INFO L85 PathProgramCache]: Analyzing trace with hash -89357397, now seen corresponding path program 2 times [2022-07-13 22:05:38,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:38,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754328490] [2022-07-13 22:05:38,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:38,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:38,723 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:05:38,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:38,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754328490] [2022-07-13 22:05:38,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754328490] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:38,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:38,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:05:38,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207523551] [2022-07-13 22:05:38,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:38,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:05:38,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:38,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:05:38,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:05:38,728 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 596 [2022-07-13 22:05:38,729 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 618 transitions, 1820 flow. Second operand has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,729 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:38,729 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 596 [2022-07-13 22:05:38,729 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:39,649 INFO L129 PetriNetUnfolder]: 611/4937 cut-off events. [2022-07-13 22:05:39,649 INFO L130 PetriNetUnfolder]: For 2686/3211 co-relation queries the response was YES. [2022-07-13 22:05:39,686 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7768 conditions, 4937 events. 611/4937 cut-off events. For 2686/3211 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 42877 event pairs, 261 based on Foata normal form. 16/4676 useless extension candidates. Maximal degree in co-relation 7726. Up to 597 conditions per place. [2022-07-13 22:05:39,696 INFO L132 encePairwiseOnDemand]: 582/596 looper letters, 73 selfloop transitions, 14 changer transitions 22/663 dead transitions. [2022-07-13 22:05:39,697 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 618 places, 663 transitions, 2187 flow [2022-07-13 22:05:39,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:05:39,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:05:39,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3685 transitions. [2022-07-13 22:05:39,699 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8832694151486098 [2022-07-13 22:05:39,699 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3685 transitions. [2022-07-13 22:05:39,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3685 transitions. [2022-07-13 22:05:39,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:39,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3685 transitions. [2022-07-13 22:05:39,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 526.4285714285714) internal successors, (3685), 7 states have internal predecessors, (3685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:39,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:39,706 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:39,706 INFO L186 Difference]: Start difference. First operand has 612 places, 618 transitions, 1820 flow. Second operand 7 states and 3685 transitions. [2022-07-13 22:05:39,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 618 places, 663 transitions, 2187 flow [2022-07-13 22:05:39,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 663 transitions, 2163 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-13 22:05:39,726 INFO L242 Difference]: Finished difference. Result has 617 places, 618 transitions, 1846 flow [2022-07-13 22:05:39,726 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1806, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1846, PETRI_PLACES=617, PETRI_TRANSITIONS=618} [2022-07-13 22:05:39,727 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 90 predicate places. [2022-07-13 22:05:39,727 INFO L495 AbstractCegarLoop]: Abstraction has has 617 places, 618 transitions, 1846 flow [2022-07-13 22:05:39,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:39,727 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:39,728 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:39,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 22:05:39,728 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:39,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:39,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1375352423, now seen corresponding path program 3 times [2022-07-13 22:05:39,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:39,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71135359] [2022-07-13 22:05:39,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:39,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:39,812 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:05:39,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:39,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71135359] [2022-07-13 22:05:39,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71135359] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:39,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:39,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:05:39,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722182070] [2022-07-13 22:05:39,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:39,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:05:39,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:39,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:05:39,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:05:39,816 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 596 [2022-07-13 22:05:39,817 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 617 places, 618 transitions, 1846 flow. Second operand has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:39,817 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:39,817 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 596 [2022-07-13 22:05:39,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:40,813 INFO L129 PetriNetUnfolder]: 659/5400 cut-off events. [2022-07-13 22:05:40,813 INFO L130 PetriNetUnfolder]: For 2790/3046 co-relation queries the response was YES. [2022-07-13 22:05:40,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8335 conditions, 5400 events. 659/5400 cut-off events. For 2790/3046 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 47520 event pairs, 208 based on Foata normal form. 20/5147 useless extension candidates. Maximal degree in co-relation 8291. Up to 646 conditions per place. [2022-07-13 22:05:40,874 INFO L132 encePairwiseOnDemand]: 579/596 looper letters, 73 selfloop transitions, 14 changer transitions 12/653 dead transitions. [2022-07-13 22:05:40,874 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 653 transitions, 2251 flow [2022-07-13 22:05:40,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:05:40,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:05:40,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3675 transitions. [2022-07-13 22:05:40,877 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8808724832214765 [2022-07-13 22:05:40,877 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3675 transitions. [2022-07-13 22:05:40,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3675 transitions. [2022-07-13 22:05:40,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:40,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3675 transitions. [2022-07-13 22:05:40,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 525.0) internal successors, (3675), 7 states have internal predecessors, (3675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:40,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:40,891 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:40,891 INFO L186 Difference]: Start difference. First operand has 617 places, 618 transitions, 1846 flow. Second operand 7 states and 3675 transitions. [2022-07-13 22:05:40,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 653 transitions, 2251 flow [2022-07-13 22:05:40,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 618 places, 653 transitions, 2247 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:40,926 INFO L242 Difference]: Finished difference. Result has 621 places, 622 transitions, 1901 flow [2022-07-13 22:05:40,927 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1842, PETRI_DIFFERENCE_MINUEND_PLACES=612, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1901, PETRI_PLACES=621, PETRI_TRANSITIONS=622} [2022-07-13 22:05:40,928 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 94 predicate places. [2022-07-13 22:05:40,928 INFO L495 AbstractCegarLoop]: Abstraction has has 621 places, 622 transitions, 1901 flow [2022-07-13 22:05:40,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:40,929 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:40,929 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:40,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 22:05:40,930 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:40,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:40,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1532751183, now seen corresponding path program 4 times [2022-07-13 22:05:40,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:40,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568040296] [2022-07-13 22:05:40,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:40,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:41,007 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:05:41,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:41,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568040296] [2022-07-13 22:05:41,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568040296] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:41,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:41,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:05:41,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113318151] [2022-07-13 22:05:41,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:41,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:05:41,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:41,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:05:41,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:05:41,011 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 596 [2022-07-13 22:05:41,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 622 transitions, 1901 flow. Second operand has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:41,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:41,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 596 [2022-07-13 22:05:41,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:42,003 INFO L129 PetriNetUnfolder]: 637/5190 cut-off events. [2022-07-13 22:05:42,003 INFO L130 PetriNetUnfolder]: For 3027/3284 co-relation queries the response was YES. [2022-07-13 22:05:42,031 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8245 conditions, 5190 events. 637/5190 cut-off events. For 3027/3284 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 45654 event pairs, 224 based on Foata normal form. 19/4948 useless extension candidates. Maximal degree in co-relation 8199. Up to 600 conditions per place. [2022-07-13 22:05:42,041 INFO L132 encePairwiseOnDemand]: 581/596 looper letters, 62 selfloop transitions, 11 changer transitions 24/643 dead transitions. [2022-07-13 22:05:42,041 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 643 transitions, 2206 flow [2022-07-13 22:05:42,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:05:42,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:05:42,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3663 transitions. [2022-07-13 22:05:42,043 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8779961649089166 [2022-07-13 22:05:42,043 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3663 transitions. [2022-07-13 22:05:42,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3663 transitions. [2022-07-13 22:05:42,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:42,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3663 transitions. [2022-07-13 22:05:42,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 523.2857142857143) internal successors, (3663), 7 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:42,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:42,051 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:42,051 INFO L186 Difference]: Start difference. First operand has 621 places, 622 transitions, 1901 flow. Second operand 7 states and 3663 transitions. [2022-07-13 22:05:42,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 643 transitions, 2206 flow [2022-07-13 22:05:42,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 622 places, 643 transitions, 2182 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-07-13 22:05:42,077 INFO L242 Difference]: Finished difference. Result has 624 places, 612 transitions, 1825 flow [2022-07-13 22:05:42,078 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1878, PETRI_DIFFERENCE_MINUEND_PLACES=616, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=611, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1825, PETRI_PLACES=624, PETRI_TRANSITIONS=612} [2022-07-13 22:05:42,078 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 97 predicate places. [2022-07-13 22:05:42,079 INFO L495 AbstractCegarLoop]: Abstraction has has 624 places, 612 transitions, 1825 flow [2022-07-13 22:05:42,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 517.2) internal successors, (2586), 5 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:42,079 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:42,079 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:42,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 22:05:42,080 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:42,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:42,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1498306728, now seen corresponding path program 1 times [2022-07-13 22:05:42,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:42,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221548812] [2022-07-13 22:05:42,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:42,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:42,151 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:05:42,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:42,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221548812] [2022-07-13 22:05:42,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221548812] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:42,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:42,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:05:42,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546060644] [2022-07-13 22:05:42,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:42,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:05:42,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:42,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:05:42,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:05:42,156 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 514 out of 596 [2022-07-13 22:05:42,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 612 transitions, 1825 flow. Second operand has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:42,158 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:42,158 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 514 of 596 [2022-07-13 22:05:42,158 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:42,875 INFO L129 PetriNetUnfolder]: 766/4560 cut-off events. [2022-07-13 22:05:42,875 INFO L130 PetriNetUnfolder]: For 3123/3123 co-relation queries the response was YES. [2022-07-13 22:05:42,913 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7241 conditions, 4560 events. 766/4560 cut-off events. For 3123/3123 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 39576 event pairs, 88 based on Foata normal form. 33/4168 useless extension candidates. Maximal degree in co-relation 7196. Up to 723 conditions per place. [2022-07-13 22:05:42,923 INFO L132 encePairwiseOnDemand]: 587/596 looper letters, 70 selfloop transitions, 10 changer transitions 6/624 dead transitions. [2022-07-13 22:05:42,924 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 624 transitions, 2002 flow [2022-07-13 22:05:42,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:05:42,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:05:42,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3159 transitions. [2022-07-13 22:05:42,926 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8833892617449665 [2022-07-13 22:05:42,926 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3159 transitions. [2022-07-13 22:05:42,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3159 transitions. [2022-07-13 22:05:42,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:42,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3159 transitions. [2022-07-13 22:05:42,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 526.5) internal successors, (3159), 6 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:42,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 596.0) internal successors, (4172), 7 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:42,930 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 596.0) internal successors, (4172), 7 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:42,930 INFO L186 Difference]: Start difference. First operand has 624 places, 612 transitions, 1825 flow. Second operand 6 states and 3159 transitions. [2022-07-13 22:05:42,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 624 transitions, 2002 flow [2022-07-13 22:05:42,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 624 transitions, 1902 flow, removed 21 selfloop flow, removed 18 redundant places. [2022-07-13 22:05:42,946 INFO L242 Difference]: Finished difference. Result has 598 places, 601 transitions, 1671 flow [2022-07-13 22:05:42,947 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1651, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1671, PETRI_PLACES=598, PETRI_TRANSITIONS=601} [2022-07-13 22:05:42,948 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 71 predicate places. [2022-07-13 22:05:42,948 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 601 transitions, 1671 flow [2022-07-13 22:05:42,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:42,948 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:42,949 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:42,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 22:05:42,949 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:42,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:42,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1888013672, now seen corresponding path program 1 times [2022-07-13 22:05:42,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:42,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424586765] [2022-07-13 22:05:42,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:42,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:43,006 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:05:43,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:43,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424586765] [2022-07-13 22:05:43,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424586765] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:43,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:43,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:05:43,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603035437] [2022-07-13 22:05:43,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:43,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:05:43,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:43,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:05:43,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:05:43,010 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 514 out of 596 [2022-07-13 22:05:43,012 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 601 transitions, 1671 flow. Second operand has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:43,012 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:43,012 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 514 of 596 [2022-07-13 22:05:43,012 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:43,713 INFO L129 PetriNetUnfolder]: 731/4575 cut-off events. [2022-07-13 22:05:43,713 INFO L130 PetriNetUnfolder]: For 871/871 co-relation queries the response was YES. [2022-07-13 22:05:43,747 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6937 conditions, 4575 events. 731/4575 cut-off events. For 871/871 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 39099 event pairs, 220 based on Foata normal form. 2/4099 useless extension candidates. Maximal degree in co-relation 6906. Up to 718 conditions per place. [2022-07-13 22:05:43,757 INFO L132 encePairwiseOnDemand]: 580/596 looper letters, 54 selfloop transitions, 13 changer transitions 20/620 dead transitions. [2022-07-13 22:05:43,757 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 620 transitions, 1896 flow [2022-07-13 22:05:43,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:05:43,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:05:43,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3673 transitions. [2022-07-13 22:05:43,760 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8803930968360498 [2022-07-13 22:05:43,760 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3673 transitions. [2022-07-13 22:05:43,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3673 transitions. [2022-07-13 22:05:43,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:43,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3673 transitions. [2022-07-13 22:05:43,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 524.7142857142857) internal successors, (3673), 7 states have internal predecessors, (3673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:43,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:43,766 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 596.0) internal successors, (4768), 8 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:43,766 INFO L186 Difference]: Start difference. First operand has 598 places, 601 transitions, 1671 flow. Second operand 7 states and 3673 transitions. [2022-07-13 22:05:43,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 620 transitions, 1896 flow [2022-07-13 22:05:43,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 620 transitions, 1874 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-07-13 22:05:43,780 INFO L242 Difference]: Finished difference. Result has 598 places, 593 transitions, 1626 flow [2022-07-13 22:05:43,781 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1643, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=587, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1626, PETRI_PLACES=598, PETRI_TRANSITIONS=593} [2022-07-13 22:05:43,781 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 71 predicate places. [2022-07-13 22:05:43,781 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 593 transitions, 1626 flow [2022-07-13 22:05:43,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:43,782 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:43,782 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:43,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 22:05:43,783 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:43,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:43,783 INFO L85 PathProgramCache]: Analyzing trace with hash -735550188, now seen corresponding path program 1 times [2022-07-13 22:05:43,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:43,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886400015] [2022-07-13 22:05:43,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:43,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:43,973 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:05:43,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:43,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886400015] [2022-07-13 22:05:43,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886400015] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:43,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:43,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-13 22:05:43,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290805406] [2022-07-13 22:05:43,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:43,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 22:05:43,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:43,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 22:05:43,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-07-13 22:05:43,979 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 480 out of 596 [2022-07-13 22:05:43,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 593 transitions, 1626 flow. Second operand has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:43,982 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:43,982 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 480 of 596 [2022-07-13 22:05:43,982 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:48,227 INFO L129 PetriNetUnfolder]: 3189/14835 cut-off events. [2022-07-13 22:05:48,227 INFO L130 PetriNetUnfolder]: For 1038/1039 co-relation queries the response was YES. [2022-07-13 22:05:48,323 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22785 conditions, 14835 events. 3189/14835 cut-off events. For 1038/1039 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 159477 event pairs, 1395 based on Foata normal form. 0/13630 useless extension candidates. Maximal degree in co-relation 22756. Up to 3187 conditions per place. [2022-07-13 22:05:48,357 INFO L132 encePairwiseOnDemand]: 570/596 looper letters, 491 selfloop transitions, 91 changer transitions 3/1092 dead transitions. [2022-07-13 22:05:48,358 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 1092 transitions, 3863 flow [2022-07-13 22:05:48,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-07-13 22:05:48,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-07-13 22:05:48,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 29387 transitions. [2022-07-13 22:05:48,371 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8217841163310962 [2022-07-13 22:05:48,371 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 29387 transitions. [2022-07-13 22:05:48,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 29387 transitions. [2022-07-13 22:05:48,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:48,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 29387 transitions. [2022-07-13 22:05:48,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 489.78333333333336) internal successors, (29387), 60 states have internal predecessors, (29387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 596.0) internal successors, (36356), 61 states have internal predecessors, (36356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,425 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 596.0) internal successors, (36356), 61 states have internal predecessors, (36356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,425 INFO L186 Difference]: Start difference. First operand has 598 places, 593 transitions, 1626 flow. Second operand 60 states and 29387 transitions. [2022-07-13 22:05:48,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 646 places, 1092 transitions, 3863 flow [2022-07-13 22:05:48,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 635 places, 1092 transitions, 3775 flow, removed 28 selfloop flow, removed 11 redundant places. [2022-07-13 22:05:48,460 INFO L242 Difference]: Finished difference. Result has 681 places, 672 transitions, 2172 flow [2022-07-13 22:05:48,461 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=2172, PETRI_PLACES=681, PETRI_TRANSITIONS=672} [2022-07-13 22:05:48,463 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 154 predicate places. [2022-07-13 22:05:48,463 INFO L495 AbstractCegarLoop]: Abstraction has has 681 places, 672 transitions, 2172 flow [2022-07-13 22:05:48,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,465 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:48,465 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:48,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-13 22:05:48,465 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:48,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:48,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1399218664, now seen corresponding path program 2 times [2022-07-13 22:05:48,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:48,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592398867] [2022-07-13 22:05:48,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:48,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:48,668 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:05:48,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:48,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592398867] [2022-07-13 22:05:48,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592398867] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:48,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:48,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-13 22:05:48,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644924408] [2022-07-13 22:05:48,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:48,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 22:05:48,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:48,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 22:05:48,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-07-13 22:05:48,675 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 480 out of 596 [2022-07-13 22:05:48,678 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 681 places, 672 transitions, 2172 flow. Second operand has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:48,678 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:48,678 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 480 of 596 [2022-07-13 22:05:48,678 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:53,513 INFO L129 PetriNetUnfolder]: 3385/16101 cut-off events. [2022-07-13 22:05:53,513 INFO L130 PetriNetUnfolder]: For 5590/5590 co-relation queries the response was YES. [2022-07-13 22:05:53,767 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27872 conditions, 16101 events. 3385/16101 cut-off events. For 5590/5590 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 175126 event pairs, 1491 based on Foata normal form. 2/14955 useless extension candidates. Maximal degree in co-relation 27804. Up to 3157 conditions per place. [2022-07-13 22:05:53,808 INFO L132 encePairwiseOnDemand]: 570/596 looper letters, 516 selfloop transitions, 138 changer transitions 3/1164 dead transitions. [2022-07-13 22:05:53,809 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 740 places, 1164 transitions, 5201 flow [2022-07-13 22:05:53,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-07-13 22:05:53,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-07-13 22:05:53,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 29379 transitions. [2022-07-13 22:05:53,824 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8215604026845638 [2022-07-13 22:05:53,824 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 29379 transitions. [2022-07-13 22:05:53,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 29379 transitions. [2022-07-13 22:05:53,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:53,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 29379 transitions. [2022-07-13 22:05:53,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 489.65) internal successors, (29379), 60 states have internal predecessors, (29379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 596.0) internal successors, (36356), 61 states have internal predecessors, (36356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,879 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 596.0) internal successors, (36356), 61 states have internal predecessors, (36356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,880 INFO L186 Difference]: Start difference. First operand has 681 places, 672 transitions, 2172 flow. Second operand 60 states and 29379 transitions. [2022-07-13 22:05:53,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 740 places, 1164 transitions, 5201 flow [2022-07-13 22:05:53,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 729 places, 1164 transitions, 4817 flow, removed 6 selfloop flow, removed 11 redundant places. [2022-07-13 22:05:53,943 INFO L242 Difference]: Finished difference. Result has 775 places, 752 transitions, 3116 flow [2022-07-13 22:05:53,944 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=2092, PETRI_DIFFERENCE_MINUEND_PLACES=670, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=3116, PETRI_PLACES=775, PETRI_TRANSITIONS=752} [2022-07-13 22:05:53,945 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 248 predicate places. [2022-07-13 22:05:53,945 INFO L495 AbstractCegarLoop]: Abstraction has has 775 places, 752 transitions, 3116 flow [2022-07-13 22:05:53,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:53,946 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:53,947 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:05:53,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 22:05:53,947 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:05:53,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:53,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1507332030, now seen corresponding path program 3 times [2022-07-13 22:05:53,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:53,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846821298] [2022-07-13 22:05:53,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:53,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:53,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:54,151 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:05:54,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:54,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846821298] [2022-07-13 22:05:54,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846821298] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:54,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:54,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-13 22:05:54,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205695712] [2022-07-13 22:05:54,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:54,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 22:05:54,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:54,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 22:05:54,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-07-13 22:05:54,156 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 480 out of 596 [2022-07-13 22:05:54,160 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 775 places, 752 transitions, 3116 flow. Second operand has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:54,160 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:54,160 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 480 of 596 [2022-07-13 22:05:54,161 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:59,719 INFO L129 PetriNetUnfolder]: 3338/15469 cut-off events. [2022-07-13 22:05:59,719 INFO L130 PetriNetUnfolder]: For 16535/16535 co-relation queries the response was YES. [2022-07-13 22:06:00,333 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30890 conditions, 15469 events. 3338/15469 cut-off events. For 16535/16535 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 167956 event pairs, 1413 based on Foata normal form. 2/14363 useless extension candidates. Maximal degree in co-relation 30776. Up to 3187 conditions per place. [2022-07-13 22:06:00,380 INFO L132 encePairwiseOnDemand]: 570/596 looper letters, 510 selfloop transitions, 167 changer transitions 3/1187 dead transitions. [2022-07-13 22:06:00,381 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 832 places, 1187 transitions, 7502 flow [2022-07-13 22:06:00,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-07-13 22:06:00,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-07-13 22:06:00,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 28365 transitions. [2022-07-13 22:06:00,392 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8205565841240453 [2022-07-13 22:06:00,392 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 28365 transitions. [2022-07-13 22:06:00,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 28365 transitions. [2022-07-13 22:06:00,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:00,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 28365 transitions. [2022-07-13 22:06:00,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 489.05172413793105) internal successors, (28365), 58 states have internal predecessors, (28365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 596.0) internal successors, (35164), 59 states have internal predecessors, (35164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,444 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 596.0) internal successors, (35164), 59 states have internal predecessors, (35164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,445 INFO L186 Difference]: Start difference. First operand has 775 places, 752 transitions, 3116 flow. Second operand 58 states and 28365 transitions. [2022-07-13 22:06:00,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 832 places, 1187 transitions, 7502 flow [2022-07-13 22:06:00,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 821 places, 1187 transitions, 6763 flow, removed 140 selfloop flow, removed 11 redundant places. [2022-07-13 22:06:00,917 INFO L242 Difference]: Finished difference. Result has 865 places, 829 transitions, 4161 flow [2022-07-13 22:06:00,918 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=2692, PETRI_DIFFERENCE_MINUEND_PLACES=764, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=650, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=4161, PETRI_PLACES=865, PETRI_TRANSITIONS=829} [2022-07-13 22:06:00,918 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 338 predicate places. [2022-07-13 22:06:00,918 INFO L495 AbstractCegarLoop]: Abstraction has has 865 places, 829 transitions, 4161 flow [2022-07-13 22:06:00,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:00,920 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:00,920 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:00,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-13 22:06:00,920 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:00,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:00,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1836048088, now seen corresponding path program 4 times [2022-07-13 22:06:00,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:00,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114145027] [2022-07-13 22:06:00,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:00,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:01,151 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:06:01,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:01,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114145027] [2022-07-13 22:06:01,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114145027] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:01,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:01,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-13 22:06:01,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659847719] [2022-07-13 22:06:01,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:01,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 22:06:01,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:01,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 22:06:01,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-07-13 22:06:01,157 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 480 out of 596 [2022-07-13 22:06:01,160 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 865 places, 829 transitions, 4161 flow. Second operand has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:01,160 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:01,160 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 480 of 596 [2022-07-13 22:06:01,160 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:07,700 INFO L129 PetriNetUnfolder]: 3619/17040 cut-off events. [2022-07-13 22:06:07,700 INFO L130 PetriNetUnfolder]: For 37670/37670 co-relation queries the response was YES. [2022-07-13 22:06:07,951 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37355 conditions, 17040 events. 3619/17040 cut-off events. For 37670/37670 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 187650 event pairs, 1499 based on Foata normal form. 2/15895 useless extension candidates. Maximal degree in co-relation 37197. Up to 3157 conditions per place. [2022-07-13 22:06:07,998 INFO L132 encePairwiseOnDemand]: 570/596 looper letters, 569 selfloop transitions, 206 changer transitions 3/1285 dead transitions. [2022-07-13 22:06:07,998 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 922 places, 1285 transitions, 9457 flow [2022-07-13 22:06:07,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-07-13 22:06:07,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-07-13 22:06:08,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 28362 transitions. [2022-07-13 22:06:08,016 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8204697986577181 [2022-07-13 22:06:08,016 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 28362 transitions. [2022-07-13 22:06:08,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 28362 transitions. [2022-07-13 22:06:08,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:08,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 28362 transitions. [2022-07-13 22:06:08,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 489.0) internal successors, (28362), 58 states have internal predecessors, (28362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:08,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 596.0) internal successors, (35164), 59 states have internal predecessors, (35164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:08,074 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 596.0) internal successors, (35164), 59 states have internal predecessors, (35164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:08,075 INFO L186 Difference]: Start difference. First operand has 865 places, 829 transitions, 4161 flow. Second operand 58 states and 28362 transitions. [2022-07-13 22:06:08,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 922 places, 1285 transitions, 9457 flow [2022-07-13 22:06:08,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 917 places, 1285 transitions, 8527 flow, removed 403 selfloop flow, removed 5 redundant places. [2022-07-13 22:06:08,327 INFO L242 Difference]: Finished difference. Result has 961 places, 906 transitions, 5420 flow [2022-07-13 22:06:08,328 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=3521, PETRI_DIFFERENCE_MINUEND_PLACES=860, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=829, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=5420, PETRI_PLACES=961, PETRI_TRANSITIONS=906} [2022-07-13 22:06:08,328 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 434 predicate places. [2022-07-13 22:06:08,328 INFO L495 AbstractCegarLoop]: Abstraction has has 961 places, 906 transitions, 5420 flow [2022-07-13 22:06:08,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:08,330 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:08,330 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:08,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-13 22:06:08,331 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:08,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:08,331 INFO L85 PathProgramCache]: Analyzing trace with hash 102389314, now seen corresponding path program 5 times [2022-07-13 22:06:08,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:08,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202869349] [2022-07-13 22:06:08,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:08,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:08,517 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:06:08,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:08,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202869349] [2022-07-13 22:06:08,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202869349] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:08,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:08,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-13 22:06:08,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735845004] [2022-07-13 22:06:08,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:08,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 22:06:08,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:08,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 22:06:08,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-07-13 22:06:08,524 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 480 out of 596 [2022-07-13 22:06:08,528 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 961 places, 906 transitions, 5420 flow. Second operand has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:08,528 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:08,528 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 480 of 596 [2022-07-13 22:06:08,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:16,031 INFO L129 PetriNetUnfolder]: 3679/17461 cut-off events. [2022-07-13 22:06:16,031 INFO L130 PetriNetUnfolder]: For 65683/65683 co-relation queries the response was YES. [2022-07-13 22:06:16,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42842 conditions, 17461 events. 3679/17461 cut-off events. For 65683/65683 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 193500 event pairs, 1548 based on Foata normal form. 2/16222 useless extension candidates. Maximal degree in co-relation 42641. Up to 3187 conditions per place. [2022-07-13 22:06:16,428 INFO L132 encePairwiseOnDemand]: 570/596 looper letters, 629 selfloop transitions, 204 changer transitions 3/1343 dead transitions. [2022-07-13 22:06:16,428 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1018 places, 1343 transitions, 12259 flow [2022-07-13 22:06:16,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-07-13 22:06:16,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-07-13 22:06:16,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 28349 transitions. [2022-07-13 22:06:16,438 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8200937283036335 [2022-07-13 22:06:16,439 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 28349 transitions. [2022-07-13 22:06:16,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 28349 transitions. [2022-07-13 22:06:16,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:16,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 28349 transitions. [2022-07-13 22:06:16,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 488.7758620689655) internal successors, (28349), 58 states have internal predecessors, (28349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:16,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 596.0) internal successors, (35164), 59 states have internal predecessors, (35164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:16,486 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 596.0) internal successors, (35164), 59 states have internal predecessors, (35164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:16,486 INFO L186 Difference]: Start difference. First operand has 961 places, 906 transitions, 5420 flow. Second operand 58 states and 28349 transitions. [2022-07-13 22:06:16,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1018 places, 1343 transitions, 12259 flow [2022-07-13 22:06:16,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1013 places, 1343 transitions, 10901 flow, removed 607 selfloop flow, removed 5 redundant places. [2022-07-13 22:06:16,932 INFO L242 Difference]: Finished difference. Result has 1058 places, 984 transitions, 6820 flow [2022-07-13 22:06:16,933 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=4478, PETRI_DIFFERENCE_MINUEND_PLACES=956, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=906, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=766, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=6820, PETRI_PLACES=1058, PETRI_TRANSITIONS=984} [2022-07-13 22:06:16,934 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 531 predicate places. [2022-07-13 22:06:16,934 INFO L495 AbstractCegarLoop]: Abstraction has has 1058 places, 984 transitions, 6820 flow [2022-07-13 22:06:16,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:16,935 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:16,935 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:16,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-13 22:06:16,936 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:16,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:16,936 INFO L85 PathProgramCache]: Analyzing trace with hash -547522178, now seen corresponding path program 6 times [2022-07-13 22:06:16,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:16,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916008391] [2022-07-13 22:06:16,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:16,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:17,231 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:06:17,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:17,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916008391] [2022-07-13 22:06:17,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916008391] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:17,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:17,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-13 22:06:17,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109135115] [2022-07-13 22:06:17,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:17,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 22:06:17,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:17,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 22:06:17,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-07-13 22:06:17,237 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 480 out of 596 [2022-07-13 22:06:17,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1058 places, 984 transitions, 6820 flow. Second operand has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:17,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:17,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 480 of 596 [2022-07-13 22:06:17,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:25,862 INFO L129 PetriNetUnfolder]: 3898/18288 cut-off events. [2022-07-13 22:06:25,862 INFO L130 PetriNetUnfolder]: For 109343/109343 co-relation queries the response was YES. [2022-07-13 22:06:26,720 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49810 conditions, 18288 events. 3898/18288 cut-off events. For 109343/109343 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 203269 event pairs, 1516 based on Foata normal form. 2/17101 useless extension candidates. Maximal degree in co-relation 49565. Up to 3157 conditions per place. [2022-07-13 22:06:26,766 INFO L132 encePairwiseOnDemand]: 570/596 looper letters, 699 selfloop transitions, 235 changer transitions 3/1444 dead transitions. [2022-07-13 22:06:26,766 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1115 places, 1444 transitions, 14774 flow [2022-07-13 22:06:26,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-07-13 22:06:26,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-07-13 22:06:26,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 28347 transitions. [2022-07-13 22:06:26,777 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8200358713260819 [2022-07-13 22:06:26,778 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 28347 transitions. [2022-07-13 22:06:26,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 28347 transitions. [2022-07-13 22:06:26,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:26,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 28347 transitions. [2022-07-13 22:06:26,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 488.7413793103448) internal successors, (28347), 58 states have internal predecessors, (28347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:26,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 596.0) internal successors, (35164), 59 states have internal predecessors, (35164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:26,825 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 596.0) internal successors, (35164), 59 states have internal predecessors, (35164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:26,825 INFO L186 Difference]: Start difference. First operand has 1058 places, 984 transitions, 6820 flow. Second operand 58 states and 28347 transitions. [2022-07-13 22:06:26,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1115 places, 1444 transitions, 14774 flow [2022-07-13 22:06:27,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1110 places, 1444 transitions, 12990 flow, removed 820 selfloop flow, removed 5 redundant places. [2022-07-13 22:06:27,695 INFO L242 Difference]: Finished difference. Result has 1155 places, 1062 transitions, 8306 flow [2022-07-13 22:06:27,696 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=596, PETRI_DIFFERENCE_MINUEND_FLOW=5542, PETRI_DIFFERENCE_MINUEND_PLACES=1053, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=984, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=813, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=8306, PETRI_PLACES=1155, PETRI_TRANSITIONS=1062} [2022-07-13 22:06:27,697 INFO L279 CegarLoopForPetriNet]: 527 programPoint places, 628 predicate places. [2022-07-13 22:06:27,697 INFO L495 AbstractCegarLoop]: Abstraction has has 1155 places, 1062 transitions, 8306 flow [2022-07-13 22:06:27,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:27,698 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:27,699 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:27,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-13 22:06:27,699 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:06:27,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:27,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1249611816, now seen corresponding path program 7 times [2022-07-13 22:06:27,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:27,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431925833] [2022-07-13 22:06:27,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:27,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:27,893 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:06:27,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:27,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431925833] [2022-07-13 22:06:27,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431925833] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:27,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:27,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-13 22:06:27,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482828871] [2022-07-13 22:06:27,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:27,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 22:06:27,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:27,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 22:06:27,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-07-13 22:06:27,898 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 480 out of 596 [2022-07-13 22:06:27,902 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1155 places, 1062 transitions, 8306 flow. Second operand has 19 states, 19 states have (on average 482.42105263157896) internal successors, (9166), 19 states have internal predecessors, (9166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:27,902 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:27,902 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 480 of 596 [2022-07-13 22:06:27,902 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand