./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-node-subst.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-node-subst.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 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:04:52,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:04:52,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:04:52,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:04:52,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:04:52,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:04:52,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:04:52,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:04:52,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:04:52,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:04:52,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:04:52,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:04:52,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:04:52,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:04:52,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:04:52,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:04:52,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:04:52,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:04:52,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:04:52,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:04:52,933 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:04:52,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:04:52,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:04:52,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:04:52,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:04:52,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:04:52,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:04:52,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:04:52,941 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:04:52,941 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:04:52,942 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:04:52,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:04:52,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:04:52,943 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:04:52,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:04:52,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:04:52,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:04:52,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:04:52,946 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:04:52,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:04:52,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:04:52,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:04:52,948 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:04:52,965 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:04:52,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:04:52,966 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:04:52,966 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:04:52,967 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:04:52,967 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:04:52,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:04:52,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:04:52,968 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:04:52,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:04:52,969 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:04:52,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:04:52,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:04:52,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:04:52,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:04:52,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:04:52,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:04:52,969 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:04:52,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:04:52,970 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:04:52,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:04:52,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:04:52,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:04:52,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:04:52,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:04:52,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:04:52,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:04:52,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:04:52,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:04:52,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:04:52,971 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:04:52,972 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:04:52,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:04:52,972 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 [2022-07-13 22:04:53,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:04:53,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:04:53,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:04:53,181 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:04:53,181 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:04:53,182 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-07-13 22:04:53,229 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef4fd7598/8b4cc0347c8c4ff2aaa19a2dbc68580c/FLAGae2b305d3 [2022-07-13 22:04:53,552 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:04:53,553 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-07-13 22:04:53,562 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef4fd7598/8b4cc0347c8c4ff2aaa19a2dbc68580c/FLAGae2b305d3 [2022-07-13 22:04:53,985 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef4fd7598/8b4cc0347c8c4ff2aaa19a2dbc68580c [2022-07-13 22:04:53,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:04:53,987 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:04:53,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:04:53,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:04:53,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:04:53,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:04:53" (1/1) ... [2022-07-13 22:04:53,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f3fc33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:53, skipping insertion in model container [2022-07-13 22:04:53,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:04:53" (1/1) ... [2022-07-13 22:04:53,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:04:54,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:04:54,178 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-node-subst.wvr.c[3996,4009] [2022-07-13 22:04:54,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:04:54,216 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:04:54,250 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-node-subst.wvr.c[3996,4009] [2022-07-13 22:04:54,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:04:54,278 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:04:54,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:54 WrapperNode [2022-07-13 22:04:54,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:04:54,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:04:54,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:04:54,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:04:54,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:54" (1/1) ... [2022-07-13 22:04:54,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:54" (1/1) ... [2022-07-13 22:04:54,345 INFO L137 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 437 [2022-07-13 22:04:54,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:04:54,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:04:54,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:04:54,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:04:54,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:54" (1/1) ... [2022-07-13 22:04:54,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:54" (1/1) ... [2022-07-13 22:04:54,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:54" (1/1) ... [2022-07-13 22:04:54,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:54" (1/1) ... [2022-07-13 22:04:54,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:54" (1/1) ... [2022-07-13 22:04:54,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:54" (1/1) ... [2022-07-13 22:04:54,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:54" (1/1) ... [2022-07-13 22:04:54,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:04:54,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:04:54,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:04:54,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:04:54,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:54" (1/1) ... [2022-07-13 22:04:54,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:04:54,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:04:54,437 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 22:04:54,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 22:04:54,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:04:54,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:04:54,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:04:54,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:04:54,469 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:04:54,469 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:04:54,469 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:04:54,469 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:04:54,469 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-13 22:04:54,470 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-13 22:04:54,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:04:54,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:04:54,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:04:54,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:04:54,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:04:54,472 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:04:54,572 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:04:54,573 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:04:55,048 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:04:55,058 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:04:55,058 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-13 22:04:55,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:04:55 BoogieIcfgContainer [2022-07-13 22:04:55,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:04:55,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:04:55,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:04:55,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:04:55,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:04:53" (1/3) ... [2022-07-13 22:04:55,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dfa2eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:04:55, skipping insertion in model container [2022-07-13 22:04:55,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:54" (2/3) ... [2022-07-13 22:04:55,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dfa2eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:04:55, skipping insertion in model container [2022-07-13 22:04:55,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:04:55" (3/3) ... [2022-07-13 22:04:55,067 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2022-07-13 22:04:55,070 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:04:55,077 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:04:55,077 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:04:55,077 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:04:55,167 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-13 22:04:55,209 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 537 places, 574 transitions, 1172 flow [2022-07-13 22:04:55,390 INFO L129 PetriNetUnfolder]: 47/571 cut-off events. [2022-07-13 22:04:55,390 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 22:04:55,396 INFO L84 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 571 events. 47/571 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 848 event pairs, 0 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 479. Up to 2 conditions per place. [2022-07-13 22:04:55,397 INFO L82 GeneralOperation]: Start removeDead. Operand has 537 places, 574 transitions, 1172 flow [2022-07-13 22:04:55,406 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 523 places, 560 transitions, 1138 flow [2022-07-13 22:04:55,416 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:04:55,422 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@3024168a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@73d3a0bb [2022-07-13 22:04:55,422 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-13 22:04:55,493 INFO L129 PetriNetUnfolder]: 47/559 cut-off events. [2022-07-13 22:04:55,494 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 22:04:55,494 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:55,495 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:55,496 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:55,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:55,499 INFO L85 PathProgramCache]: Analyzing trace with hash 2022928042, now seen corresponding path program 1 times [2022-07-13 22:04:55,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:55,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994722594] [2022-07-13 22:04:55,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:55,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:55,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:55,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:55,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994722594] [2022-07-13 22:04:55,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994722594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:55,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:55,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 22:04:55,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975862784] [2022-07-13 22:04:55,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:55,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 22:04:55,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:55,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 22:04:55,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 22:04:55,839 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 538 out of 574 [2022-07-13 22:04:55,844 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 560 transitions, 1138 flow. Second operand has 2 states, 2 states have (on average 543.0) internal successors, (1086), 2 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:55,844 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:55,844 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 538 of 574 [2022-07-13 22:04:55,845 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:55,981 INFO L129 PetriNetUnfolder]: 18/531 cut-off events. [2022-07-13 22:04:55,982 INFO L130 PetriNetUnfolder]: For 14/16 co-relation queries the response was YES. [2022-07-13 22:04:55,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 531 events. 18/531 cut-off events. For 14/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 825 event pairs, 0 based on Foata normal form. 34/524 useless extension candidates. Maximal degree in co-relation 455. Up to 7 conditions per place. [2022-07-13 22:04:55,987 INFO L132 encePairwiseOnDemand]: 545/574 looper letters, 6 selfloop transitions, 0 changer transitions 17/531 dead transitions. [2022-07-13 22:04:55,988 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 531 transitions, 1092 flow [2022-07-13 22:04:55,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 22:04:55,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-13 22:04:56,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1111 transitions. [2022-07-13 22:04:56,004 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9677700348432056 [2022-07-13 22:04:56,005 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1111 transitions. [2022-07-13 22:04:56,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1111 transitions. [2022-07-13 22:04:56,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:56,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1111 transitions. [2022-07-13 22:04:56,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 555.5) internal successors, (1111), 2 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:56,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 574.0) internal successors, (1722), 3 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:56,024 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 574.0) internal successors, (1722), 3 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:56,026 INFO L186 Difference]: Start difference. First operand has 523 places, 560 transitions, 1138 flow. Second operand 2 states and 1111 transitions. [2022-07-13 22:04:56,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 531 transitions, 1092 flow [2022-07-13 22:04:56,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 531 transitions, 1080 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-13 22:04:56,044 INFO L242 Difference]: Finished difference. Result has 518 places, 514 transitions, 1034 flow [2022-07-13 22:04:56,046 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=1034, PETRI_PLACES=518, PETRI_TRANSITIONS=514} [2022-07-13 22:04:56,049 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, -5 predicate places. [2022-07-13 22:04:56,050 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 514 transitions, 1034 flow [2022-07-13 22:04:56,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 543.0) internal successors, (1086), 2 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:56,051 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:56,051 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:56,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:04:56,052 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:56,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:56,052 INFO L85 PathProgramCache]: Analyzing trace with hash -735916760, now seen corresponding path program 1 times [2022-07-13 22:04:56,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:56,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794746129] [2022-07-13 22:04:56,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:56,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:56,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:56,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:56,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794746129] [2022-07-13 22:04:56,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794746129] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:56,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:56,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:56,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288083129] [2022-07-13 22:04:56,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:56,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:56,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:56,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:56,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:56,218 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 531 out of 574 [2022-07-13 22:04:56,220 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 514 transitions, 1034 flow. Second operand has 3 states, 3 states have (on average 534.3333333333334) internal successors, (1603), 3 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:56,220 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:56,220 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 531 of 574 [2022-07-13 22:04:56,220 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:56,401 INFO L129 PetriNetUnfolder]: 44/720 cut-off events. [2022-07-13 22:04:56,402 INFO L130 PetriNetUnfolder]: For 10/33 co-relation queries the response was YES. [2022-07-13 22:04:56,407 INFO L84 FinitePrefix]: Finished finitePrefix Result has 780 conditions, 720 events. 44/720 cut-off events. For 10/33 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2195 event pairs, 10 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 777. Up to 35 conditions per place. [2022-07-13 22:04:56,411 INFO L132 encePairwiseOnDemand]: 570/574 looper letters, 14 selfloop transitions, 3 changer transitions 0/518 dead transitions. [2022-07-13 22:04:56,411 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 518 transitions, 1078 flow [2022-07-13 22:04:56,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:56,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:56,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1611 transitions. [2022-07-13 22:04:56,414 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9355400696864111 [2022-07-13 22:04:56,414 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1611 transitions. [2022-07-13 22:04:56,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1611 transitions. [2022-07-13 22:04:56,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:56,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1611 transitions. [2022-07-13 22:04:56,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 537.0) internal successors, (1611), 3 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:56,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 574.0) internal successors, (2296), 4 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:56,421 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 574.0) internal successors, (2296), 4 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:56,422 INFO L186 Difference]: Start difference. First operand has 518 places, 514 transitions, 1034 flow. Second operand 3 states and 1611 transitions. [2022-07-13 22:04:56,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 518 transitions, 1078 flow [2022-07-13 22:04:56,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 518 transitions, 1078 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:04:56,429 INFO L242 Difference]: Finished difference. Result has 505 places, 516 transitions, 1056 flow [2022-07-13 22:04:56,429 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1056, PETRI_PLACES=505, PETRI_TRANSITIONS=516} [2022-07-13 22:04:56,430 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, -18 predicate places. [2022-07-13 22:04:56,430 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 516 transitions, 1056 flow [2022-07-13 22:04:56,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 534.3333333333334) internal successors, (1603), 3 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:56,432 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:56,432 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:56,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:04:56,433 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:56,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:56,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1470072086, now seen corresponding path program 1 times [2022-07-13 22:04:56,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:56,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964217531] [2022-07-13 22:04:56,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:56,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:56,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:56,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:56,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964217531] [2022-07-13 22:04:56,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964217531] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:56,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:56,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:56,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848988615] [2022-07-13 22:04:56,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:56,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:56,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:56,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:56,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:56,575 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 531 out of 574 [2022-07-13 22:04:56,576 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 516 transitions, 1056 flow. Second operand has 3 states, 3 states have (on average 534.3333333333334) internal successors, (1603), 3 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:56,576 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:56,577 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 531 of 574 [2022-07-13 22:04:56,577 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:56,726 INFO L129 PetriNetUnfolder]: 48/795 cut-off events. [2022-07-13 22:04:56,726 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-07-13 22:04:56,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 882 conditions, 795 events. 48/795 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2861 event pairs, 10 based on Foata normal form. 0/746 useless extension candidates. Maximal degree in co-relation 877. Up to 35 conditions per place. [2022-07-13 22:04:56,733 INFO L132 encePairwiseOnDemand]: 570/574 looper letters, 14 selfloop transitions, 3 changer transitions 0/520 dead transitions. [2022-07-13 22:04:56,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 520 transitions, 1100 flow [2022-07-13 22:04:56,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:56,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:56,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1611 transitions. [2022-07-13 22:04:56,737 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9355400696864111 [2022-07-13 22:04:56,738 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1611 transitions. [2022-07-13 22:04:56,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1611 transitions. [2022-07-13 22:04:56,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:56,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1611 transitions. [2022-07-13 22:04:56,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 537.0) internal successors, (1611), 3 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:56,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 574.0) internal successors, (2296), 4 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:56,745 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 574.0) internal successors, (2296), 4 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:56,745 INFO L186 Difference]: Start difference. First operand has 505 places, 516 transitions, 1056 flow. Second operand 3 states and 1611 transitions. [2022-07-13 22:04:56,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 520 transitions, 1100 flow [2022-07-13 22:04:56,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 520 transitions, 1094 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 22:04:56,753 INFO L242 Difference]: Finished difference. Result has 507 places, 518 transitions, 1072 flow [2022-07-13 22:04:56,753 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1072, PETRI_PLACES=507, PETRI_TRANSITIONS=518} [2022-07-13 22:04:56,755 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, -16 predicate places. [2022-07-13 22:04:56,755 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 518 transitions, 1072 flow [2022-07-13 22:04:56,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 534.3333333333334) internal successors, (1603), 3 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:56,756 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:56,757 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:56,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 22:04:56,757 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:56,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:56,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1154364988, now seen corresponding path program 1 times [2022-07-13 22:04:56,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:56,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359848956] [2022-07-13 22:04:56,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:56,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:56,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:56,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:56,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359848956] [2022-07-13 22:04:56,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359848956] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:56,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:56,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:04:56,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266374013] [2022-07-13 22:04:56,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:56,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:04:56,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:56,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:04:56,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:04:56,856 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 531 out of 574 [2022-07-13 22:04:56,858 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 518 transitions, 1072 flow. Second operand has 3 states, 3 states have (on average 534.3333333333334) internal successors, (1603), 3 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:56,858 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:56,858 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 531 of 574 [2022-07-13 22:04:56,858 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:56,986 INFO L129 PetriNetUnfolder]: 40/663 cut-off events. [2022-07-13 22:04:56,987 INFO L130 PetriNetUnfolder]: For 20/22 co-relation queries the response was YES. [2022-07-13 22:04:56,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 663 events. 40/663 cut-off events. For 20/22 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1655 event pairs, 10 based on Foata normal form. 0/625 useless extension candidates. Maximal degree in co-relation 728. Up to 35 conditions per place. [2022-07-13 22:04:56,993 INFO L132 encePairwiseOnDemand]: 570/574 looper letters, 14 selfloop transitions, 3 changer transitions 0/522 dead transitions. [2022-07-13 22:04:56,993 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 522 transitions, 1116 flow [2022-07-13 22:04:56,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:04:56,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:04:56,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1611 transitions. [2022-07-13 22:04:56,996 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9355400696864111 [2022-07-13 22:04:56,997 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1611 transitions. [2022-07-13 22:04:56,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1611 transitions. [2022-07-13 22:04:56,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:56,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1611 transitions. [2022-07-13 22:04:57,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 537.0) internal successors, (1611), 3 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:57,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 574.0) internal successors, (2296), 4 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:57,007 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 574.0) internal successors, (2296), 4 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:57,007 INFO L186 Difference]: Start difference. First operand has 507 places, 518 transitions, 1072 flow. Second operand 3 states and 1611 transitions. [2022-07-13 22:04:57,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 522 transitions, 1116 flow [2022-07-13 22:04:57,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 522 transitions, 1110 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 22:04:57,018 INFO L242 Difference]: Finished difference. Result has 509 places, 520 transitions, 1088 flow [2022-07-13 22:04:57,019 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1088, PETRI_PLACES=509, PETRI_TRANSITIONS=520} [2022-07-13 22:04:57,020 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, -14 predicate places. [2022-07-13 22:04:57,024 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 520 transitions, 1088 flow [2022-07-13 22:04:57,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 534.3333333333334) internal successors, (1603), 3 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:57,025 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:57,025 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:57,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 22:04:57,026 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:57,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:57,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1945453358, now seen corresponding path program 1 times [2022-07-13 22:04:57,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:57,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384529357] [2022-07-13 22:04:57,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:57,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:57,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:57,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:57,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384529357] [2022-07-13 22:04:57,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384529357] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:57,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:57,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:04:57,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131223113] [2022-07-13 22:04:57,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:57,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:04:57,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:57,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:04:57,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:04:57,289 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 574 [2022-07-13 22:04:57,292 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 520 transitions, 1088 flow. Second operand has 8 states, 8 states have (on average 426.375) internal successors, (3411), 8 states have internal predecessors, (3411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:57,292 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:57,293 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 574 [2022-07-13 22:04:57,293 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:57,570 INFO L129 PetriNetUnfolder]: 97/1244 cut-off events. [2022-07-13 22:04:57,570 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-07-13 22:04:57,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1539 conditions, 1244 events. 97/1244 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6392 event pairs, 39 based on Foata normal form. 0/1163 useless extension candidates. Maximal degree in co-relation 1532. Up to 159 conditions per place. [2022-07-13 22:04:57,585 INFO L132 encePairwiseOnDemand]: 562/574 looper letters, 106 selfloop transitions, 11 changer transitions 0/524 dead transitions. [2022-07-13 22:04:57,585 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 524 transitions, 1330 flow [2022-07-13 22:04:57,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:04:57,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 22:04:57,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3844 transitions. [2022-07-13 22:04:57,591 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7440960123886953 [2022-07-13 22:04:57,591 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3844 transitions. [2022-07-13 22:04:57,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3844 transitions. [2022-07-13 22:04:57,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:57,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3844 transitions. [2022-07-13 22:04:57,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 427.1111111111111) internal successors, (3844), 9 states have internal predecessors, (3844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:57,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 574.0) internal successors, (5740), 10 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:57,608 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 574.0) internal successors, (5740), 10 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:57,608 INFO L186 Difference]: Start difference. First operand has 509 places, 520 transitions, 1088 flow. Second operand 9 states and 3844 transitions. [2022-07-13 22:04:57,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 524 transitions, 1330 flow [2022-07-13 22:04:57,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 524 transitions, 1324 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 22:04:57,616 INFO L242 Difference]: Finished difference. Result has 516 places, 521 transitions, 1112 flow [2022-07-13 22:04:57,617 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1082, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1112, PETRI_PLACES=516, PETRI_TRANSITIONS=521} [2022-07-13 22:04:57,618 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, -7 predicate places. [2022-07-13 22:04:57,618 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 521 transitions, 1112 flow [2022-07-13 22:04:57,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 426.375) internal successors, (3411), 8 states have internal predecessors, (3411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:57,619 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:57,620 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:57,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 22:04:57,620 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:57,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:57,621 INFO L85 PathProgramCache]: Analyzing trace with hash -23497976, now seen corresponding path program 1 times [2022-07-13 22:04:57,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:57,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522157363] [2022-07-13 22:04:57,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:57,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:57,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:57,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:57,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522157363] [2022-07-13 22:04:57,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522157363] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:04:57,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548030547] [2022-07-13 22:04:57,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:57,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:04:57,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:04:57,753 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 22:04:57,758 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 22:04:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:57,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:04:57,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:04:58,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:58,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:04:58,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:04:58,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548030547] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 22:04:58,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:04:58,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 16 [2022-07-13 22:04:58,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037286373] [2022-07-13 22:04:58,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:58,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:04:58,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:58,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:04:58,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:04:58,343 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 459 out of 574 [2022-07-13 22:04:58,346 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 521 transitions, 1112 flow. Second operand has 9 states, 9 states have (on average 466.0) internal successors, (4194), 9 states have internal predecessors, (4194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:58,346 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:58,346 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 459 of 574 [2022-07-13 22:04:58,346 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:58,674 INFO L129 PetriNetUnfolder]: 97/1245 cut-off events. [2022-07-13 22:04:58,674 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-13 22:04:58,684 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1525 conditions, 1245 events. 97/1245 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6378 event pairs, 39 based on Foata normal form. 0/1164 useless extension candidates. Maximal degree in co-relation 1517. Up to 130 conditions per place. [2022-07-13 22:04:58,688 INFO L132 encePairwiseOnDemand]: 556/574 looper letters, 71 selfloop transitions, 17 changer transitions 0/523 dead transitions. [2022-07-13 22:04:58,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 523 transitions, 1292 flow [2022-07-13 22:04:58,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:04:58,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-13 22:04:58,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5137 transitions. [2022-07-13 22:04:58,696 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.813588850174216 [2022-07-13 22:04:58,696 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5137 transitions. [2022-07-13 22:04:58,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5137 transitions. [2022-07-13 22:04:58,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:58,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5137 transitions. [2022-07-13 22:04:58,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 467.0) internal successors, (5137), 11 states have internal predecessors, (5137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:58,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 574.0) internal successors, (6888), 12 states have internal predecessors, (6888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:58,712 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 574.0) internal successors, (6888), 12 states have internal predecessors, (6888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:58,712 INFO L186 Difference]: Start difference. First operand has 516 places, 521 transitions, 1112 flow. Second operand 11 states and 5137 transitions. [2022-07-13 22:04:58,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 523 transitions, 1292 flow [2022-07-13 22:04:58,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 523 transitions, 1272 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-07-13 22:04:58,720 INFO L242 Difference]: Finished difference. Result has 522 places, 523 transitions, 1146 flow [2022-07-13 22:04:58,721 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1146, PETRI_PLACES=522, PETRI_TRANSITIONS=523} [2022-07-13 22:04:58,722 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, -1 predicate places. [2022-07-13 22:04:58,722 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 523 transitions, 1146 flow [2022-07-13 22:04:58,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 466.0) internal successors, (4194), 9 states have internal predecessors, (4194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:58,723 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:58,723 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:58,741 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 22:04:58,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-13 22:04:58,939 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:58,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:58,939 INFO L85 PathProgramCache]: Analyzing trace with hash -317225092, now seen corresponding path program 1 times [2022-07-13 22:04:58,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:58,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145612422] [2022-07-13 22:04:58,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:58,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:59,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:59,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:04:59,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:59,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145612422] [2022-07-13 22:04:59,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145612422] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:04:59,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:04:59,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:04:59,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940005572] [2022-07-13 22:04:59,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:59,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:04:59,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:59,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:04:59,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:04:59,162 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 574 [2022-07-13 22:04:59,164 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 523 transitions, 1146 flow. Second operand has 8 states, 8 states have (on average 426.875) internal successors, (3415), 8 states have internal predecessors, (3415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:59,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:59,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 574 [2022-07-13 22:04:59,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:59,398 INFO L129 PetriNetUnfolder]: 67/1026 cut-off events. [2022-07-13 22:04:59,399 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-07-13 22:04:59,404 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1298 conditions, 1026 events. 67/1026 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3991 event pairs, 21 based on Foata normal form. 0/966 useless extension candidates. Maximal degree in co-relation 1287. Up to 136 conditions per place. [2022-07-13 22:04:59,408 INFO L132 encePairwiseOnDemand]: 562/574 looper letters, 108 selfloop transitions, 11 changer transitions 0/527 dead transitions. [2022-07-13 22:04:59,408 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 527 transitions, 1392 flow [2022-07-13 22:04:59,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:04:59,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 22:04:59,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3844 transitions. [2022-07-13 22:04:59,414 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7440960123886953 [2022-07-13 22:04:59,415 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3844 transitions. [2022-07-13 22:04:59,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3844 transitions. [2022-07-13 22:04:59,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:59,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3844 transitions. [2022-07-13 22:04:59,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 427.1111111111111) internal successors, (3844), 9 states have internal predecessors, (3844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:59,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 574.0) internal successors, (5740), 10 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:59,427 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 574.0) internal successors, (5740), 10 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:59,427 INFO L186 Difference]: Start difference. First operand has 522 places, 523 transitions, 1146 flow. Second operand 9 states and 3844 transitions. [2022-07-13 22:04:59,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 527 transitions, 1392 flow [2022-07-13 22:04:59,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 527 transitions, 1365 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-07-13 22:04:59,439 INFO L242 Difference]: Finished difference. Result has 523 places, 524 transitions, 1149 flow [2022-07-13 22:04:59,440 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1149, PETRI_PLACES=523, PETRI_TRANSITIONS=524} [2022-07-13 22:04:59,440 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 0 predicate places. [2022-07-13 22:04:59,441 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 524 transitions, 1149 flow [2022-07-13 22:04:59,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 426.875) internal successors, (3415), 8 states have internal predecessors, (3415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:59,442 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:59,442 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:59,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 22:04:59,442 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:59,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:59,443 INFO L85 PathProgramCache]: Analyzing trace with hash 734939679, now seen corresponding path program 1 times [2022-07-13 22:04:59,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:59,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135989469] [2022-07-13 22:04:59,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:59,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:59,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:04:59,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:59,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135989469] [2022-07-13 22:04:59,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135989469] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:04:59,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020520207] [2022-07-13 22:04:59,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:59,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:04:59,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:04:59,586 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 22:04:59,619 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 22:04:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:59,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:04:59,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:04:59,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:04:59,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:05:00,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:05:00,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020520207] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 22:05:00,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:05:00,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 16 [2022-07-13 22:05:00,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334407026] [2022-07-13 22:05:00,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:00,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:05:00,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:00,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:05:00,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:05:00,084 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 459 out of 574 [2022-07-13 22:05:00,087 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 524 transitions, 1149 flow. Second operand has 9 states, 9 states have (on average 466.8888888888889) internal successors, (4202), 9 states have internal predecessors, (4202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:00,087 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:00,087 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 459 of 574 [2022-07-13 22:05:00,088 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:00,355 INFO L129 PetriNetUnfolder]: 67/1027 cut-off events. [2022-07-13 22:05:00,355 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-07-13 22:05:00,364 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1274 conditions, 1027 events. 67/1027 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3980 event pairs, 21 based on Foata normal form. 0/966 useless extension candidates. Maximal degree in co-relation 1262. Up to 91 conditions per place. [2022-07-13 22:05:00,369 INFO L132 encePairwiseOnDemand]: 554/574 looper letters, 71 selfloop transitions, 20 changer transitions 0/526 dead transitions. [2022-07-13 22:05:00,369 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 526 transitions, 1335 flow [2022-07-13 22:05:00,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 22:05:00,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-13 22:05:00,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 6055 transitions. [2022-07-13 22:05:00,377 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8114446529080676 [2022-07-13 22:05:00,377 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 6055 transitions. [2022-07-13 22:05:00,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 6055 transitions. [2022-07-13 22:05:00,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:00,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 6055 transitions. [2022-07-13 22:05:00,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 465.7692307692308) internal successors, (6055), 13 states have internal predecessors, (6055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:00,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 574.0) internal successors, (8036), 14 states have internal predecessors, (8036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:00,419 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 574.0) internal successors, (8036), 14 states have internal predecessors, (8036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:00,420 INFO L186 Difference]: Start difference. First operand has 523 places, 524 transitions, 1149 flow. Second operand 13 states and 6055 transitions. [2022-07-13 22:05:00,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 526 transitions, 1335 flow [2022-07-13 22:05:00,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 526 transitions, 1315 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-07-13 22:05:00,428 INFO L242 Difference]: Finished difference. Result has 531 places, 526 transitions, 1189 flow [2022-07-13 22:05:00,429 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1189, PETRI_PLACES=531, PETRI_TRANSITIONS=526} [2022-07-13 22:05:00,432 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 8 predicate places. [2022-07-13 22:05:00,432 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 526 transitions, 1189 flow [2022-07-13 22:05:00,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 466.8888888888889) internal successors, (4202), 9 states have internal predecessors, (4202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:00,433 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:00,434 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:00,454 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 22:05:00,654 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,SelfDestructingSolverStorable7 [2022-07-13 22:05:00,655 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:00,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:00,656 INFO L85 PathProgramCache]: Analyzing trace with hash -2034615736, now seen corresponding path program 1 times [2022-07-13 22:05:00,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:00,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472921736] [2022-07-13 22:05:00,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:00,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:00,790 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 22:05:00,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:00,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472921736] [2022-07-13 22:05:00,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472921736] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:00,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:00,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:05:00,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89070306] [2022-07-13 22:05:00,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:00,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:05:00,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:00,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:05:00,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:05:00,795 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 444 out of 574 [2022-07-13 22:05:00,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 526 transitions, 1189 flow. Second operand has 7 states, 7 states have (on average 455.57142857142856) internal successors, (3189), 7 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:00,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:00,797 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 444 of 574 [2022-07-13 22:05:00,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:01,042 INFO L129 PetriNetUnfolder]: 59/942 cut-off events. [2022-07-13 22:05:01,043 INFO L130 PetriNetUnfolder]: For 21/31 co-relation queries the response was YES. [2022-07-13 22:05:01,048 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1222 conditions, 942 events. 59/942 cut-off events. For 21/31 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3477 event pairs, 14 based on Foata normal form. 1/898 useless extension candidates. Maximal degree in co-relation 1207. Up to 112 conditions per place. [2022-07-13 22:05:01,051 INFO L132 encePairwiseOnDemand]: 566/574 looper letters, 94 selfloop transitions, 5 changer transitions 4/546 dead transitions. [2022-07-13 22:05:01,051 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 546 transitions, 1448 flow [2022-07-13 22:05:01,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:05:01,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 22:05:01,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4100 transitions. [2022-07-13 22:05:01,057 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7936507936507936 [2022-07-13 22:05:01,058 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4100 transitions. [2022-07-13 22:05:01,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4100 transitions. [2022-07-13 22:05:01,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:01,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4100 transitions. [2022-07-13 22:05:01,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 455.55555555555554) internal successors, (4100), 9 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:01,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 574.0) internal successors, (5740), 10 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:01,071 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 574.0) internal successors, (5740), 10 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:01,071 INFO L186 Difference]: Start difference. First operand has 531 places, 526 transitions, 1189 flow. Second operand 9 states and 4100 transitions. [2022-07-13 22:05:01,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 546 transitions, 1448 flow [2022-07-13 22:05:01,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 546 transitions, 1415 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-07-13 22:05:01,079 INFO L242 Difference]: Finished difference. Result has 536 places, 530 transitions, 1197 flow [2022-07-13 22:05:01,080 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1156, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1197, PETRI_PLACES=536, PETRI_TRANSITIONS=530} [2022-07-13 22:05:01,080 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 13 predicate places. [2022-07-13 22:05:01,081 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 530 transitions, 1197 flow [2022-07-13 22:05:01,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 455.57142857142856) internal successors, (3189), 7 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:01,082 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:01,082 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:01,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 22:05:01,082 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:01,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:01,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1765072472, now seen corresponding path program 1 times [2022-07-13 22:05:01,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:01,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117875531] [2022-07-13 22:05:01,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:01,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:01,235 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 22:05:01,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:01,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117875531] [2022-07-13 22:05:01,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117875531] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:01,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:01,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:05:01,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068601454] [2022-07-13 22:05:01,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:01,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:05:01,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:01,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:05:01,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:05:01,240 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 574 [2022-07-13 22:05:01,242 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 530 transitions, 1197 flow. Second operand has 8 states, 8 states have (on average 427.375) internal successors, (3419), 8 states have internal predecessors, (3419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:01,243 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:01,243 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 574 [2022-07-13 22:05:01,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:01,545 INFO L129 PetriNetUnfolder]: 147/1661 cut-off events. [2022-07-13 22:05:01,546 INFO L130 PetriNetUnfolder]: For 60/70 co-relation queries the response was YES. [2022-07-13 22:05:01,557 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2093 conditions, 1661 events. 147/1661 cut-off events. For 60/70 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 9575 event pairs, 66 based on Foata normal form. 0/1527 useless extension candidates. Maximal degree in co-relation 2071. Up to 174 conditions per place. [2022-07-13 22:05:01,562 INFO L132 encePairwiseOnDemand]: 564/574 looper letters, 112 selfloop transitions, 9 changer transitions 0/534 dead transitions. [2022-07-13 22:05:01,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 534 transitions, 1447 flow [2022-07-13 22:05:01,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:05:01,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-13 22:05:01,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 3430 transitions. [2022-07-13 22:05:01,568 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7469512195121951 [2022-07-13 22:05:01,568 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 3430 transitions. [2022-07-13 22:05:01,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 3430 transitions. [2022-07-13 22:05:01,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:01,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 3430 transitions. [2022-07-13 22:05:01,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 428.75) internal successors, (3430), 8 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:01,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 574.0) internal successors, (5166), 9 states have internal predecessors, (5166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:01,581 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 574.0) internal successors, (5166), 9 states have internal predecessors, (5166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:01,582 INFO L186 Difference]: Start difference. First operand has 536 places, 530 transitions, 1197 flow. Second operand 8 states and 3430 transitions. [2022-07-13 22:05:01,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 534 transitions, 1447 flow [2022-07-13 22:05:01,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 534 transitions, 1442 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-07-13 22:05:01,591 INFO L242 Difference]: Finished difference. Result has 539 places, 531 transitions, 1218 flow [2022-07-13 22:05:01,592 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1192, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1218, PETRI_PLACES=539, PETRI_TRANSITIONS=531} [2022-07-13 22:05:01,592 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 16 predicate places. [2022-07-13 22:05:01,593 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 531 transitions, 1218 flow [2022-07-13 22:05:01,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 427.375) internal successors, (3419), 8 states have internal predecessors, (3419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:01,594 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:01,594 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:01,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 22:05:01,594 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:01,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:01,595 INFO L85 PathProgramCache]: Analyzing trace with hash 681701814, now seen corresponding path program 1 times [2022-07-13 22:05:01,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:01,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298515811] [2022-07-13 22:05:01,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:01,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:01,699 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 22:05:01,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:01,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298515811] [2022-07-13 22:05:01,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298515811] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:05:01,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164081881] [2022-07-13 22:05:01,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:01,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:05:01,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:05:01,701 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 22:05:01,702 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 22:05:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:01,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:05:01,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:05:02,000 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 22:05:02,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:05:02,174 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 22:05:02,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164081881] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 22:05:02,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:05:02,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 16 [2022-07-13 22:05:02,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529887335] [2022-07-13 22:05:02,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:02,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:05:02,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:02,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:05:02,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:05:02,179 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 459 out of 574 [2022-07-13 22:05:02,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 531 transitions, 1218 flow. Second operand has 9 states, 9 states have (on average 467.77777777777777) internal successors, (4210), 9 states have internal predecessors, (4210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:02,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:02,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 459 of 574 [2022-07-13 22:05:02,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:02,576 INFO L129 PetriNetUnfolder]: 147/1662 cut-off events. [2022-07-13 22:05:02,576 INFO L130 PetriNetUnfolder]: For 77/87 co-relation queries the response was YES. [2022-07-13 22:05:02,586 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2078 conditions, 1662 events. 147/1662 cut-off events. For 77/87 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 9556 event pairs, 66 based on Foata normal form. 0/1529 useless extension candidates. Maximal degree in co-relation 2057. Up to 134 conditions per place. [2022-07-13 22:05:02,590 INFO L132 encePairwiseOnDemand]: 554/574 looper letters, 73 selfloop transitions, 21 changer transitions 0/533 dead transitions. [2022-07-13 22:05:02,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 533 transitions, 1410 flow [2022-07-13 22:05:02,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 22:05:02,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-13 22:05:02,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 5596 transitions. [2022-07-13 22:05:02,599 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8124274099883856 [2022-07-13 22:05:02,599 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 5596 transitions. [2022-07-13 22:05:02,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 5596 transitions. [2022-07-13 22:05:02,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:02,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 5596 transitions. [2022-07-13 22:05:02,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 466.3333333333333) internal successors, (5596), 12 states have internal predecessors, (5596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:02,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 574.0) internal successors, (7462), 13 states have internal predecessors, (7462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:02,615 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 574.0) internal successors, (7462), 13 states have internal predecessors, (7462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:02,615 INFO L186 Difference]: Start difference. First operand has 539 places, 531 transitions, 1218 flow. Second operand 12 states and 5596 transitions. [2022-07-13 22:05:02,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 533 transitions, 1410 flow [2022-07-13 22:05:02,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 533 transitions, 1394 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-13 22:05:02,624 INFO L242 Difference]: Finished difference. Result has 547 places, 533 transitions, 1263 flow [2022-07-13 22:05:02,624 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1202, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1263, PETRI_PLACES=547, PETRI_TRANSITIONS=533} [2022-07-13 22:05:02,625 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 24 predicate places. [2022-07-13 22:05:02,625 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 533 transitions, 1263 flow [2022-07-13 22:05:02,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 467.77777777777777) internal successors, (4210), 9 states have internal predecessors, (4210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:02,626 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:02,626 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:02,649 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 22:05:02,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:05:02,840 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:02,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:02,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1167783152, now seen corresponding path program 1 times [2022-07-13 22:05:02,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:02,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13305622] [2022-07-13 22:05:02,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:02,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:03,091 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 22:05:03,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:03,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13305622] [2022-07-13 22:05:03,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13305622] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:03,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:03,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:03,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736572190] [2022-07-13 22:05:03,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:03,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:03,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:03,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:03,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:03,096 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-13 22:05:03,098 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 533 transitions, 1263 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:03,098 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:03,099 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-13 22:05:03,099 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:03,852 INFO L129 PetriNetUnfolder]: 644/2573 cut-off events. [2022-07-13 22:05:03,853 INFO L130 PetriNetUnfolder]: For 312/333 co-relation queries the response was YES. [2022-07-13 22:05:03,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3902 conditions, 2573 events. 644/2573 cut-off events. For 312/333 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 20455 event pairs, 294 based on Foata normal form. 6/2393 useless extension candidates. Maximal degree in co-relation 3878. Up to 612 conditions per place. [2022-07-13 22:05:03,875 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 139 selfloop transitions, 30 changer transitions 24/634 dead transitions. [2022-07-13 22:05:03,875 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 634 transitions, 1888 flow [2022-07-13 22:05:03,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 22:05:03,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-13 22:05:03,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 10634 transitions. [2022-07-13 22:05:03,888 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7719221835075494 [2022-07-13 22:05:03,888 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 10634 transitions. [2022-07-13 22:05:03,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 10634 transitions. [2022-07-13 22:05:03,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:03,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 10634 transitions. [2022-07-13 22:05:03,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 443.0833333333333) internal successors, (10634), 24 states have internal predecessors, (10634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:03,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 574.0) internal successors, (14350), 25 states have internal predecessors, (14350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:03,914 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 574.0) internal successors, (14350), 25 states have internal predecessors, (14350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:03,914 INFO L186 Difference]: Start difference. First operand has 547 places, 533 transitions, 1263 flow. Second operand 24 states and 10634 transitions. [2022-07-13 22:05:03,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 634 transitions, 1888 flow [2022-07-13 22:05:03,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 634 transitions, 1852 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-07-13 22:05:03,923 INFO L242 Difference]: Finished difference. Result has 581 places, 562 transitions, 1443 flow [2022-07-13 22:05:03,924 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1227, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1443, PETRI_PLACES=581, PETRI_TRANSITIONS=562} [2022-07-13 22:05:03,925 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 58 predicate places. [2022-07-13 22:05:03,925 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 562 transitions, 1443 flow [2022-07-13 22:05:03,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:03,926 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:03,926 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:03,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 22:05:03,926 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:03,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:03,927 INFO L85 PathProgramCache]: Analyzing trace with hash -584080018, now seen corresponding path program 2 times [2022-07-13 22:05:03,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:03,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509140974] [2022-07-13 22:05:03,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:03,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:04,151 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 22:05:04,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:04,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509140974] [2022-07-13 22:05:04,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509140974] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:04,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:04,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:04,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944242850] [2022-07-13 22:05:04,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:04,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:04,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:04,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:04,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:04,157 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-13 22:05:04,160 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 562 transitions, 1443 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:04,160 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:04,160 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-13 22:05:04,160 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:05,263 INFO L129 PetriNetUnfolder]: 1010/3765 cut-off events. [2022-07-13 22:05:05,265 INFO L130 PetriNetUnfolder]: For 3440/3489 co-relation queries the response was YES. [2022-07-13 22:05:05,296 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7973 conditions, 3765 events. 1010/3765 cut-off events. For 3440/3489 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 35332 event pairs, 498 based on Foata normal form. 1/3470 useless extension candidates. Maximal degree in co-relation 7929. Up to 937 conditions per place. [2022-07-13 22:05:05,310 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 172 selfloop transitions, 45 changer transitions 22/680 dead transitions. [2022-07-13 22:05:05,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 680 transitions, 2468 flow [2022-07-13 22:05:05,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 22:05:05,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-13 22:05:05,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 10631 transitions. [2022-07-13 22:05:05,326 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7717044134727061 [2022-07-13 22:05:05,326 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 10631 transitions. [2022-07-13 22:05:05,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 10631 transitions. [2022-07-13 22:05:05,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:05,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 10631 transitions. [2022-07-13 22:05:05,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 442.9583333333333) internal successors, (10631), 24 states have internal predecessors, (10631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:05,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 574.0) internal successors, (14350), 25 states have internal predecessors, (14350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:05,351 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 574.0) internal successors, (14350), 25 states have internal predecessors, (14350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:05,352 INFO L186 Difference]: Start difference. First operand has 581 places, 562 transitions, 1443 flow. Second operand 24 states and 10631 transitions. [2022-07-13 22:05:05,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 680 transitions, 2468 flow [2022-07-13 22:05:05,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 680 transitions, 2458 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:05,372 INFO L242 Difference]: Finished difference. Result has 620 places, 591 transitions, 1853 flow [2022-07-13 22:05:05,373 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1439, PETRI_DIFFERENCE_MINUEND_PLACES=577, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1853, PETRI_PLACES=620, PETRI_TRANSITIONS=591} [2022-07-13 22:05:05,374 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 97 predicate places. [2022-07-13 22:05:05,374 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 591 transitions, 1853 flow [2022-07-13 22:05:05,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:05,375 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:05,375 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:05,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 22:05:05,375 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:05,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:05,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1345030594, now seen corresponding path program 3 times [2022-07-13 22:05:05,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:05,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098938650] [2022-07-13 22:05:05,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:05,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:05,545 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 22:05:05,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:05,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098938650] [2022-07-13 22:05:05,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098938650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:05,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:05,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:05,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920178652] [2022-07-13 22:05:05,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:05,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:05,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:05,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:05,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:05,550 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-13 22:05:05,553 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 591 transitions, 1853 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:05,553 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:05,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-13 22:05:05,553 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:06,913 INFO L129 PetriNetUnfolder]: 1120/4338 cut-off events. [2022-07-13 22:05:06,914 INFO L130 PetriNetUnfolder]: For 9994/10027 co-relation queries the response was YES. [2022-07-13 22:05:06,964 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10951 conditions, 4338 events. 1120/4338 cut-off events. For 9994/10027 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 42657 event pairs, 590 based on Foata normal form. 5/4004 useless extension candidates. Maximal degree in co-relation 10888. Up to 1177 conditions per place. [2022-07-13 22:05:06,984 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 161 selfloop transitions, 56 changer transitions 20/678 dead transitions. [2022-07-13 22:05:06,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 678 transitions, 3057 flow [2022-07-13 22:05:06,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 22:05:06,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-13 22:05:06,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 9747 transitions. [2022-07-13 22:05:06,993 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7718561925879 [2022-07-13 22:05:06,993 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 9747 transitions. [2022-07-13 22:05:06,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 9747 transitions. [2022-07-13 22:05:06,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:06,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 9747 transitions. [2022-07-13 22:05:07,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 443.04545454545456) internal successors, (9747), 22 states have internal predecessors, (9747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:07,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 574.0) internal successors, (13202), 23 states have internal predecessors, (13202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:07,078 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 574.0) internal successors, (13202), 23 states have internal predecessors, (13202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:07,078 INFO L186 Difference]: Start difference. First operand has 620 places, 591 transitions, 1853 flow. Second operand 22 states and 9747 transitions. [2022-07-13 22:05:07,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 678 transitions, 3057 flow [2022-07-13 22:05:07,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 637 places, 678 transitions, 2919 flow, removed 69 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:07,121 INFO L242 Difference]: Finished difference. Result has 651 places, 621 transitions, 2326 flow [2022-07-13 22:05:07,122 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=1765, PETRI_DIFFERENCE_MINUEND_PLACES=616, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2326, PETRI_PLACES=651, PETRI_TRANSITIONS=621} [2022-07-13 22:05:07,122 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 128 predicate places. [2022-07-13 22:05:07,123 INFO L495 AbstractCegarLoop]: Abstraction has has 651 places, 621 transitions, 2326 flow [2022-07-13 22:05:07,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:07,124 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:07,124 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:07,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 22:05:07,124 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:07,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:07,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1665310844, now seen corresponding path program 4 times [2022-07-13 22:05:07,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:07,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963212110] [2022-07-13 22:05:07,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:07,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:07,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 22:05:07,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:07,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963212110] [2022-07-13 22:05:07,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963212110] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:07,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:07,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:07,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109512438] [2022-07-13 22:05:07,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:07,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:07,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:07,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:07,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:07,289 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-13 22:05:07,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 621 transitions, 2326 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:07,292 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:07,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-13 22:05:07,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:08,704 INFO L129 PetriNetUnfolder]: 1273/4705 cut-off events. [2022-07-13 22:05:08,704 INFO L130 PetriNetUnfolder]: For 17970/18053 co-relation queries the response was YES. [2022-07-13 22:05:08,748 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13188 conditions, 4705 events. 1273/4705 cut-off events. For 17970/18053 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 47104 event pairs, 635 based on Foata normal form. 1/4336 useless extension candidates. Maximal degree in co-relation 13112. Up to 1186 conditions per place. [2022-07-13 22:05:08,768 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 179 selfloop transitions, 61 changer transitions 18/699 dead transitions. [2022-07-13 22:05:08,769 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 699 transitions, 3682 flow [2022-07-13 22:05:08,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:05:08,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-13 22:05:08,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 8871 transitions. [2022-07-13 22:05:08,774 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7727351916376307 [2022-07-13 22:05:08,774 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 8871 transitions. [2022-07-13 22:05:08,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 8871 transitions. [2022-07-13 22:05:08,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:08,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 8871 transitions. [2022-07-13 22:05:08,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 443.55) internal successors, (8871), 20 states have internal predecessors, (8871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:08,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 574.0) internal successors, (12054), 21 states have internal predecessors, (12054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:08,796 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 574.0) internal successors, (12054), 21 states have internal predecessors, (12054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:08,796 INFO L186 Difference]: Start difference. First operand has 651 places, 621 transitions, 2326 flow. Second operand 20 states and 8871 transitions. [2022-07-13 22:05:08,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 699 transitions, 3682 flow [2022-07-13 22:05:08,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 699 transitions, 3460 flow, removed 111 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:08,873 INFO L242 Difference]: Finished difference. Result has 681 places, 653 transitions, 2844 flow [2022-07-13 22:05:08,875 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=2144, PETRI_DIFFERENCE_MINUEND_PLACES=647, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2844, PETRI_PLACES=681, PETRI_TRANSITIONS=653} [2022-07-13 22:05:08,875 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 158 predicate places. [2022-07-13 22:05:08,875 INFO L495 AbstractCegarLoop]: Abstraction has has 681 places, 653 transitions, 2844 flow [2022-07-13 22:05:08,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:08,876 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:08,877 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:08,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 22:05:08,877 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:08,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:08,878 INFO L85 PathProgramCache]: Analyzing trace with hash 781660482, now seen corresponding path program 5 times [2022-07-13 22:05:08,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:08,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879371859] [2022-07-13 22:05:08,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:08,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:09,072 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 22:05:09,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:09,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879371859] [2022-07-13 22:05:09,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879371859] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:09,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:09,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:09,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115084831] [2022-07-13 22:05:09,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:09,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:09,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:09,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:09,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:09,078 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-13 22:05:09,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 681 places, 653 transitions, 2844 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:09,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:09,081 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-13 22:05:09,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:10,695 INFO L129 PetriNetUnfolder]: 1312/5119 cut-off events. [2022-07-13 22:05:10,696 INFO L130 PetriNetUnfolder]: For 27053/27110 co-relation queries the response was YES. [2022-07-13 22:05:10,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15073 conditions, 5119 events. 1312/5119 cut-off events. For 27053/27110 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 53418 event pairs, 736 based on Foata normal form. 19/4743 useless extension candidates. Maximal degree in co-relation 14983. Up to 1361 conditions per place. [2022-07-13 22:05:10,772 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 198 selfloop transitions, 78 changer transitions 15/732 dead transitions. [2022-07-13 22:05:10,772 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 698 places, 732 transitions, 4359 flow [2022-07-13 22:05:10,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:05:10,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-13 22:05:10,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 8867 transitions. [2022-07-13 22:05:10,780 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7723867595818815 [2022-07-13 22:05:10,780 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 8867 transitions. [2022-07-13 22:05:10,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 8867 transitions. [2022-07-13 22:05:10,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:10,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 8867 transitions. [2022-07-13 22:05:10,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 443.35) internal successors, (8867), 20 states have internal predecessors, (8867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:10,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 574.0) internal successors, (12054), 21 states have internal predecessors, (12054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:10,804 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 574.0) internal successors, (12054), 21 states have internal predecessors, (12054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:10,804 INFO L186 Difference]: Start difference. First operand has 681 places, 653 transitions, 2844 flow. Second operand 20 states and 8867 transitions. [2022-07-13 22:05:10,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 698 places, 732 transitions, 4359 flow [2022-07-13 22:05:10,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 696 places, 732 transitions, 4003 flow, removed 178 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:10,932 INFO L242 Difference]: Finished difference. Result has 711 places, 684 transitions, 3381 flow [2022-07-13 22:05:10,933 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=2618, PETRI_DIFFERENCE_MINUEND_PLACES=677, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3381, PETRI_PLACES=711, PETRI_TRANSITIONS=684} [2022-07-13 22:05:10,933 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 188 predicate places. [2022-07-13 22:05:10,933 INFO L495 AbstractCegarLoop]: Abstraction has has 711 places, 684 transitions, 3381 flow [2022-07-13 22:05:10,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:10,934 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:10,935 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:10,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 22:05:10,935 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:10,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:10,935 INFO L85 PathProgramCache]: Analyzing trace with hash -316243756, now seen corresponding path program 6 times [2022-07-13 22:05:10,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:10,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976605694] [2022-07-13 22:05:10,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:10,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:11,127 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 22:05:11,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:11,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976605694] [2022-07-13 22:05:11,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976605694] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:11,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:11,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:11,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753074147] [2022-07-13 22:05:11,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:11,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:11,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:11,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:11,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:11,134 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-13 22:05:11,137 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 684 transitions, 3381 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:11,137 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:11,137 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-13 22:05:11,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:12,833 INFO L129 PetriNetUnfolder]: 1343/5300 cut-off events. [2022-07-13 22:05:12,833 INFO L130 PetriNetUnfolder]: For 30062/30137 co-relation queries the response was YES. [2022-07-13 22:05:12,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15952 conditions, 5300 events. 1343/5300 cut-off events. For 30062/30137 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 56504 event pairs, 674 based on Foata normal form. 20/4915 useless extension candidates. Maximal degree in co-relation 15848. Up to 1375 conditions per place. [2022-07-13 22:05:12,906 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 200 selfloop transitions, 96 changer transitions 13/750 dead transitions. [2022-07-13 22:05:12,906 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 726 places, 750 transitions, 4804 flow [2022-07-13 22:05:12,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:12,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:12,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7991 transitions. [2022-07-13 22:05:12,912 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7734223770809137 [2022-07-13 22:05:12,912 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7991 transitions. [2022-07-13 22:05:12,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7991 transitions. [2022-07-13 22:05:12,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:12,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7991 transitions. [2022-07-13 22:05:12,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 443.94444444444446) internal successors, (7991), 18 states have internal predecessors, (7991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:12,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:12,928 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:12,928 INFO L186 Difference]: Start difference. First operand has 711 places, 684 transitions, 3381 flow. Second operand 18 states and 7991 transitions. [2022-07-13 22:05:12,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 726 places, 750 transitions, 4804 flow [2022-07-13 22:05:13,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 724 places, 750 transitions, 4408 flow, removed 198 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:13,072 INFO L242 Difference]: Finished difference. Result has 732 places, 705 transitions, 3756 flow [2022-07-13 22:05:13,073 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=3179, PETRI_DIFFERENCE_MINUEND_PLACES=707, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3756, PETRI_PLACES=732, PETRI_TRANSITIONS=705} [2022-07-13 22:05:13,073 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 209 predicate places. [2022-07-13 22:05:13,073 INFO L495 AbstractCegarLoop]: Abstraction has has 732 places, 705 transitions, 3756 flow [2022-07-13 22:05:13,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:13,074 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:13,074 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:13,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 22:05:13,074 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:13,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:13,075 INFO L85 PathProgramCache]: Analyzing trace with hash 211709358, now seen corresponding path program 7 times [2022-07-13 22:05:13,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:13,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346662111] [2022-07-13 22:05:13,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:13,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:13,207 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 22:05:13,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:13,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346662111] [2022-07-13 22:05:13,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346662111] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:13,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:13,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:13,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957915224] [2022-07-13 22:05:13,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:13,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:13,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:13,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:13,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:13,212 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-13 22:05:13,224 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 732 places, 705 transitions, 3756 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:13,225 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:13,225 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-13 22:05:13,225 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:15,040 INFO L129 PetriNetUnfolder]: 1412/5623 cut-off events. [2022-07-13 22:05:15,041 INFO L130 PetriNetUnfolder]: For 25365/25461 co-relation queries the response was YES. [2022-07-13 22:05:15,101 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16622 conditions, 5623 events. 1412/5623 cut-off events. For 25365/25461 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 60823 event pairs, 770 based on Foata normal form. 37/5232 useless extension candidates. Maximal degree in co-relation 16511. Up to 1425 conditions per place. [2022-07-13 22:05:15,120 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 210 selfloop transitions, 100 changer transitions 12/763 dead transitions. [2022-07-13 22:05:15,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 746 places, 763 transitions, 5057 flow [2022-07-13 22:05:15,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:05:15,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:05:15,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 7554 transitions. [2022-07-13 22:05:15,124 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.774134043861447 [2022-07-13 22:05:15,125 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 7554 transitions. [2022-07-13 22:05:15,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 7554 transitions. [2022-07-13 22:05:15,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:15,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 7554 transitions. [2022-07-13 22:05:15,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 444.3529411764706) internal successors, (7554), 17 states have internal predecessors, (7554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:15,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 574.0) internal successors, (10332), 18 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:15,138 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 574.0) internal successors, (10332), 18 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:15,138 INFO L186 Difference]: Start difference. First operand has 732 places, 705 transitions, 3756 flow. Second operand 17 states and 7554 transitions. [2022-07-13 22:05:15,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 746 places, 763 transitions, 5057 flow [2022-07-13 22:05:15,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 744 places, 763 transitions, 4915 flow, removed 71 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:15,264 INFO L242 Difference]: Finished difference. Result has 753 places, 726 transitions, 4275 flow [2022-07-13 22:05:15,265 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=3648, PETRI_DIFFERENCE_MINUEND_PLACES=728, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=620, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4275, PETRI_PLACES=753, PETRI_TRANSITIONS=726} [2022-07-13 22:05:15,265 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 230 predicate places. [2022-07-13 22:05:15,265 INFO L495 AbstractCegarLoop]: Abstraction has has 753 places, 726 transitions, 4275 flow [2022-07-13 22:05:15,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:15,266 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:15,266 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:15,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 22:05:15,266 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:15,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:15,267 INFO L85 PathProgramCache]: Analyzing trace with hash -825348756, now seen corresponding path program 8 times [2022-07-13 22:05:15,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:15,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179564765] [2022-07-13 22:05:15,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:15,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:15,435 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 22:05:15,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:15,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179564765] [2022-07-13 22:05:15,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179564765] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:15,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:15,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:15,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319589076] [2022-07-13 22:05:15,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:15,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:15,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:15,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:15,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:15,441 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-13 22:05:15,443 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 753 places, 726 transitions, 4275 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:15,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:15,443 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-13 22:05:15,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:17,235 INFO L129 PetriNetUnfolder]: 1417/5665 cut-off events. [2022-07-13 22:05:17,235 INFO L130 PetriNetUnfolder]: For 27882/28023 co-relation queries the response was YES. [2022-07-13 22:05:17,315 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17282 conditions, 5665 events. 1417/5665 cut-off events. For 27882/28023 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 61804 event pairs, 690 based on Foata normal form. 62/5298 useless extension candidates. Maximal degree in co-relation 17163. Up to 1460 conditions per place. [2022-07-13 22:05:17,338 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 211 selfloop transitions, 107 changer transitions 15/774 dead transitions. [2022-07-13 22:05:17,338 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 766 places, 774 transitions, 5363 flow [2022-07-13 22:05:17,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:05:17,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:05:17,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 7114 transitions. [2022-07-13 22:05:17,344 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7746080139372822 [2022-07-13 22:05:17,344 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 7114 transitions. [2022-07-13 22:05:17,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 7114 transitions. [2022-07-13 22:05:17,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:17,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 7114 transitions. [2022-07-13 22:05:17,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 444.625) internal successors, (7114), 16 states have internal predecessors, (7114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:17,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 574.0) internal successors, (9758), 17 states have internal predecessors, (9758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:17,360 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 574.0) internal successors, (9758), 17 states have internal predecessors, (9758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:17,360 INFO L186 Difference]: Start difference. First operand has 753 places, 726 transitions, 4275 flow. Second operand 16 states and 7114 transitions. [2022-07-13 22:05:17,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 766 places, 774 transitions, 5363 flow [2022-07-13 22:05:17,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 764 places, 774 transitions, 5243 flow, removed 60 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:17,633 INFO L242 Difference]: Finished difference. Result has 771 places, 734 transitions, 4563 flow [2022-07-13 22:05:17,634 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=4159, PETRI_DIFFERENCE_MINUEND_PLACES=749, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4563, PETRI_PLACES=771, PETRI_TRANSITIONS=734} [2022-07-13 22:05:17,634 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 248 predicate places. [2022-07-13 22:05:17,635 INFO L495 AbstractCegarLoop]: Abstraction has has 771 places, 734 transitions, 4563 flow [2022-07-13 22:05:17,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:17,635 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:17,635 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:17,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 22:05:17,636 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:17,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:17,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1591793836, now seen corresponding path program 9 times [2022-07-13 22:05:17,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:17,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546039178] [2022-07-13 22:05:17,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:17,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:17,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 22:05:17,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:17,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546039178] [2022-07-13 22:05:17,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546039178] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:17,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:17,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:17,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755520610] [2022-07-13 22:05:17,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:17,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:17,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:17,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:17,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:17,808 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-13 22:05:17,809 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 771 places, 734 transitions, 4563 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:17,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:17,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-13 22:05:17,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:19,781 INFO L129 PetriNetUnfolder]: 1462/5928 cut-off events. [2022-07-13 22:05:19,782 INFO L130 PetriNetUnfolder]: For 31510/31651 co-relation queries the response was YES. [2022-07-13 22:05:19,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18529 conditions, 5928 events. 1462/5928 cut-off events. For 31510/31651 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 65640 event pairs, 766 based on Foata normal form. 55/5550 useless extension candidates. Maximal degree in co-relation 18404. Up to 1388 conditions per place. [2022-07-13 22:05:19,885 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 244 selfloop transitions, 98 changer transitions 19/802 dead transitions. [2022-07-13 22:05:19,885 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 789 places, 802 transitions, 6129 flow [2022-07-13 22:05:19,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 22:05:19,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-13 22:05:19,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 9310 transitions. [2022-07-13 22:05:19,892 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7723577235772358 [2022-07-13 22:05:19,892 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 9310 transitions. [2022-07-13 22:05:19,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 9310 transitions. [2022-07-13 22:05:19,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:19,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 9310 transitions. [2022-07-13 22:05:19,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 443.3333333333333) internal successors, (9310), 21 states have internal predecessors, (9310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:19,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 574.0) internal successors, (12628), 22 states have internal predecessors, (12628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:19,915 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 574.0) internal successors, (12628), 22 states have internal predecessors, (12628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:19,915 INFO L186 Difference]: Start difference. First operand has 771 places, 734 transitions, 4563 flow. Second operand 21 states and 9310 transitions. [2022-07-13 22:05:19,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 789 places, 802 transitions, 6129 flow [2022-07-13 22:05:20,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 786 places, 802 transitions, 6016 flow, removed 34 selfloop flow, removed 3 redundant places. [2022-07-13 22:05:20,087 INFO L242 Difference]: Finished difference. Result has 800 places, 758 transitions, 5280 flow [2022-07-13 22:05:20,088 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=4482, PETRI_DIFFERENCE_MINUEND_PLACES=766, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=650, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5280, PETRI_PLACES=800, PETRI_TRANSITIONS=758} [2022-07-13 22:05:20,089 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 277 predicate places. [2022-07-13 22:05:20,089 INFO L495 AbstractCegarLoop]: Abstraction has has 800 places, 758 transitions, 5280 flow [2022-07-13 22:05:20,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:20,090 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:20,090 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:20,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 22:05:20,091 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:20,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:20,091 INFO L85 PathProgramCache]: Analyzing trace with hash 146240648, now seen corresponding path program 10 times [2022-07-13 22:05:20,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:20,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056142] [2022-07-13 22:05:20,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:20,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:20,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 22:05:20,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:20,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056142] [2022-07-13 22:05:20,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056142] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:20,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:20,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:20,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762936271] [2022-07-13 22:05:20,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:20,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:20,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:20,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:20,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:20,247 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-13 22:05:20,249 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 800 places, 758 transitions, 5280 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:20,250 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:20,250 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-13 22:05:20,250 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:22,360 INFO L129 PetriNetUnfolder]: 1486/6033 cut-off events. [2022-07-13 22:05:22,360 INFO L130 PetriNetUnfolder]: For 36819/36978 co-relation queries the response was YES. [2022-07-13 22:05:22,558 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19668 conditions, 6033 events. 1486/6033 cut-off events. For 36819/36978 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 67344 event pairs, 782 based on Foata normal form. 64/5645 useless extension candidates. Maximal degree in co-relation 19531. Up to 1526 conditions per place. [2022-07-13 22:05:22,579 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 226 selfloop transitions, 120 changer transitions 16/803 dead transitions. [2022-07-13 22:05:22,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 815 places, 803 transitions, 6521 flow [2022-07-13 22:05:22,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:22,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:22,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7990 transitions. [2022-07-13 22:05:22,583 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7733255903987611 [2022-07-13 22:05:22,583 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7990 transitions. [2022-07-13 22:05:22,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7990 transitions. [2022-07-13 22:05:22,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:22,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7990 transitions. [2022-07-13 22:05:22,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 443.8888888888889) internal successors, (7990), 18 states have internal predecessors, (7990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:22,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:22,597 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:22,597 INFO L186 Difference]: Start difference. First operand has 800 places, 758 transitions, 5280 flow. Second operand 18 states and 7990 transitions. [2022-07-13 22:05:22,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 815 places, 803 transitions, 6521 flow [2022-07-13 22:05:22,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 813 places, 803 transitions, 6287 flow, removed 117 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:22,797 INFO L242 Difference]: Finished difference. Result has 821 places, 772 transitions, 5660 flow [2022-07-13 22:05:22,797 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=5092, PETRI_DIFFERENCE_MINUEND_PLACES=796, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=646, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5660, PETRI_PLACES=821, PETRI_TRANSITIONS=772} [2022-07-13 22:05:22,798 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 298 predicate places. [2022-07-13 22:05:22,798 INFO L495 AbstractCegarLoop]: Abstraction has has 821 places, 772 transitions, 5660 flow [2022-07-13 22:05:22,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:22,798 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:22,798 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:22,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 22:05:22,799 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:22,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:22,799 INFO L85 PathProgramCache]: Analyzing trace with hash -816679436, now seen corresponding path program 11 times [2022-07-13 22:05:22,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:22,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173741111] [2022-07-13 22:05:22,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:22,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:22,937 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 22:05:22,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:22,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173741111] [2022-07-13 22:05:22,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173741111] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:22,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:22,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:22,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479278646] [2022-07-13 22:05:22,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:22,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:22,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:22,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:22,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:22,942 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-13 22:05:22,944 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 821 places, 772 transitions, 5660 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:22,944 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:22,944 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-13 22:05:22,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:25,099 INFO L129 PetriNetUnfolder]: 1517/6141 cut-off events. [2022-07-13 22:05:25,100 INFO L130 PetriNetUnfolder]: For 34891/35029 co-relation queries the response was YES. [2022-07-13 22:05:25,191 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20347 conditions, 6141 events. 1517/6141 cut-off events. For 34891/35029 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 69250 event pairs, 689 based on Foata normal form. 37/5716 useless extension candidates. Maximal degree in co-relation 20203. Up to 1559 conditions per place. [2022-07-13 22:05:25,213 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 256 selfloop transitions, 113 changer transitions 11/821 dead transitions. [2022-07-13 22:05:25,213 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 835 places, 821 transitions, 7049 flow [2022-07-13 22:05:25,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:05:25,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:05:25,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 7554 transitions. [2022-07-13 22:05:25,217 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.774134043861447 [2022-07-13 22:05:25,217 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 7554 transitions. [2022-07-13 22:05:25,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 7554 transitions. [2022-07-13 22:05:25,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:25,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 7554 transitions. [2022-07-13 22:05:25,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 444.3529411764706) internal successors, (7554), 17 states have internal predecessors, (7554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:25,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 574.0) internal successors, (10332), 18 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:25,229 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 574.0) internal successors, (10332), 18 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:25,229 INFO L186 Difference]: Start difference. First operand has 821 places, 772 transitions, 5660 flow. Second operand 17 states and 7554 transitions. [2022-07-13 22:05:25,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 835 places, 821 transitions, 7049 flow [2022-07-13 22:05:25,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 831 places, 821 transitions, 6882 flow, removed 34 selfloop flow, removed 4 redundant places. [2022-07-13 22:05:25,581 INFO L242 Difference]: Finished difference. Result has 839 places, 790 transitions, 6199 flow [2022-07-13 22:05:25,581 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=5505, PETRI_DIFFERENCE_MINUEND_PLACES=815, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=672, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6199, PETRI_PLACES=839, PETRI_TRANSITIONS=790} [2022-07-13 22:05:25,582 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 316 predicate places. [2022-07-13 22:05:25,582 INFO L495 AbstractCegarLoop]: Abstraction has has 839 places, 790 transitions, 6199 flow [2022-07-13 22:05:25,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:25,583 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:25,583 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:25,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 22:05:25,583 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:25,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:25,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1282102000, now seen corresponding path program 12 times [2022-07-13 22:05:25,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:25,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688983087] [2022-07-13 22:05:25,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:25,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:25,740 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 22:05:25,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:25,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688983087] [2022-07-13 22:05:25,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688983087] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:25,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:25,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:25,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606746518] [2022-07-13 22:05:25,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:25,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:25,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:25,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:25,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:25,744 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-13 22:05:25,746 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 839 places, 790 transitions, 6199 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:25,746 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:25,746 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-13 22:05:25,746 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:27,942 INFO L129 PetriNetUnfolder]: 1516/6203 cut-off events. [2022-07-13 22:05:27,942 INFO L130 PetriNetUnfolder]: For 35862/36024 co-relation queries the response was YES. [2022-07-13 22:05:28,046 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20672 conditions, 6203 events. 1516/6203 cut-off events. For 35862/36024 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 70226 event pairs, 677 based on Foata normal form. 46/5792 useless extension candidates. Maximal degree in co-relation 20522. Up to 1546 conditions per place. [2022-07-13 22:05:28,070 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 254 selfloop transitions, 116 changer transitions 20/831 dead transitions. [2022-07-13 22:05:28,070 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 854 places, 831 transitions, 7390 flow [2022-07-13 22:05:28,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:28,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:28,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7994 transitions. [2022-07-13 22:05:28,075 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7737127371273713 [2022-07-13 22:05:28,075 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7994 transitions. [2022-07-13 22:05:28,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7994 transitions. [2022-07-13 22:05:28,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:28,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7994 transitions. [2022-07-13 22:05:28,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 444.1111111111111) internal successors, (7994), 18 states have internal predecessors, (7994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:28,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:28,090 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:28,090 INFO L186 Difference]: Start difference. First operand has 839 places, 790 transitions, 6199 flow. Second operand 18 states and 7994 transitions. [2022-07-13 22:05:28,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 854 places, 831 transitions, 7390 flow [2022-07-13 22:05:28,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 851 places, 831 transitions, 7174 flow, removed 83 selfloop flow, removed 3 redundant places. [2022-07-13 22:05:28,335 INFO L242 Difference]: Finished difference. Result has 858 places, 799 transitions, 6489 flow [2022-07-13 22:05:28,336 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=6015, PETRI_DIFFERENCE_MINUEND_PLACES=834, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=790, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=677, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6489, PETRI_PLACES=858, PETRI_TRANSITIONS=799} [2022-07-13 22:05:28,337 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 335 predicate places. [2022-07-13 22:05:28,337 INFO L495 AbstractCegarLoop]: Abstraction has has 858 places, 799 transitions, 6489 flow [2022-07-13 22:05:28,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:28,337 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:28,338 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:28,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 22:05:28,338 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:28,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:28,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1009102832, now seen corresponding path program 13 times [2022-07-13 22:05:28,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:28,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343164359] [2022-07-13 22:05:28,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:28,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:28,599 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 22:05:28,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:28,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343164359] [2022-07-13 22:05:28,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343164359] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:28,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:28,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:28,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050164065] [2022-07-13 22:05:28,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:28,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:28,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:28,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:28,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:28,604 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-13 22:05:28,605 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 858 places, 799 transitions, 6489 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:28,605 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:28,606 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-13 22:05:28,606 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:30,938 INFO L129 PetriNetUnfolder]: 1639/6436 cut-off events. [2022-07-13 22:05:30,938 INFO L130 PetriNetUnfolder]: For 45467/45721 co-relation queries the response was YES. [2022-07-13 22:05:31,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22418 conditions, 6436 events. 1639/6436 cut-off events. For 45467/45721 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 72940 event pairs, 649 based on Foata normal form. 32/6002 useless extension candidates. Maximal degree in co-relation 22263. Up to 1441 conditions per place. [2022-07-13 22:05:31,056 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 279 selfloop transitions, 143 changer transitions 19/882 dead transitions. [2022-07-13 22:05:31,056 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 877 places, 882 transitions, 8344 flow [2022-07-13 22:05:31,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 22:05:31,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-13 22:05:31,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 9745 transitions. [2022-07-13 22:05:31,060 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7716978143807413 [2022-07-13 22:05:31,061 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 9745 transitions. [2022-07-13 22:05:31,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 9745 transitions. [2022-07-13 22:05:31,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:31,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 9745 transitions. [2022-07-13 22:05:31,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 442.95454545454544) internal successors, (9745), 22 states have internal predecessors, (9745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:31,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 574.0) internal successors, (13202), 23 states have internal predecessors, (13202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:31,074 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 574.0) internal successors, (13202), 23 states have internal predecessors, (13202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:31,074 INFO L186 Difference]: Start difference. First operand has 858 places, 799 transitions, 6489 flow. Second operand 22 states and 9745 transitions. [2022-07-13 22:05:31,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 877 places, 882 transitions, 8344 flow [2022-07-13 22:05:31,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 874 places, 882 transitions, 8172 flow, removed 55 selfloop flow, removed 3 redundant places. [2022-07-13 22:05:31,335 INFO L242 Difference]: Finished difference. Result has 888 places, 831 transitions, 7363 flow [2022-07-13 22:05:31,336 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=6332, PETRI_DIFFERENCE_MINUEND_PLACES=853, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=799, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=677, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7363, PETRI_PLACES=888, PETRI_TRANSITIONS=831} [2022-07-13 22:05:31,336 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 365 predicate places. [2022-07-13 22:05:31,337 INFO L495 AbstractCegarLoop]: Abstraction has has 888 places, 831 transitions, 7363 flow [2022-07-13 22:05:31,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:31,337 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:31,337 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:31,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 22:05:31,338 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:31,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:31,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1029494804, now seen corresponding path program 14 times [2022-07-13 22:05:31,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:31,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252241522] [2022-07-13 22:05:31,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:31,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:31,461 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 22:05:31,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:31,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252241522] [2022-07-13 22:05:31,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252241522] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:31,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:31,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:31,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046685492] [2022-07-13 22:05:31,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:31,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:31,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:31,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:31,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:31,466 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-13 22:05:31,467 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 888 places, 831 transitions, 7363 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:31,468 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:31,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-13 22:05:31,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:34,161 INFO L129 PetriNetUnfolder]: 1682/6638 cut-off events. [2022-07-13 22:05:34,161 INFO L130 PetriNetUnfolder]: For 52580/52858 co-relation queries the response was YES. [2022-07-13 22:05:34,263 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24171 conditions, 6638 events. 1682/6638 cut-off events. For 52580/52858 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 76240 event pairs, 663 based on Foata normal form. 23/6169 useless extension candidates. Maximal degree in co-relation 24003. Up to 1463 conditions per place. [2022-07-13 22:05:34,288 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 332 selfloop transitions, 105 changer transitions 17/895 dead transitions. [2022-07-13 22:05:34,288 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 906 places, 895 transitions, 9138 flow [2022-07-13 22:05:34,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 22:05:34,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-13 22:05:34,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 9307 transitions. [2022-07-13 22:05:34,292 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7721088435374149 [2022-07-13 22:05:34,292 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 9307 transitions. [2022-07-13 22:05:34,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 9307 transitions. [2022-07-13 22:05:34,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:34,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 9307 transitions. [2022-07-13 22:05:34,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 443.1904761904762) internal successors, (9307), 21 states have internal predecessors, (9307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:34,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 574.0) internal successors, (12628), 22 states have internal predecessors, (12628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:34,304 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 574.0) internal successors, (12628), 22 states have internal predecessors, (12628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:34,305 INFO L186 Difference]: Start difference. First operand has 888 places, 831 transitions, 7363 flow. Second operand 21 states and 9307 transitions. [2022-07-13 22:05:34,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 906 places, 895 transitions, 9138 flow [2022-07-13 22:05:34,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 904 places, 895 transitions, 8964 flow, removed 87 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:34,644 INFO L242 Difference]: Finished difference. Result has 918 places, 855 transitions, 8047 flow [2022-07-13 22:05:34,645 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=7203, PETRI_DIFFERENCE_MINUEND_PLACES=884, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=831, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=741, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=8047, PETRI_PLACES=918, PETRI_TRANSITIONS=855} [2022-07-13 22:05:34,645 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 395 predicate places. [2022-07-13 22:05:34,645 INFO L495 AbstractCegarLoop]: Abstraction has has 918 places, 855 transitions, 8047 flow [2022-07-13 22:05:34,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:34,646 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:34,646 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:34,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 22:05:34,647 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:34,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:34,647 INFO L85 PathProgramCache]: Analyzing trace with hash -693912916, now seen corresponding path program 15 times [2022-07-13 22:05:34,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:34,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856750174] [2022-07-13 22:05:34,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:34,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:34,792 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 22:05:34,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:34,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856750174] [2022-07-13 22:05:34,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856750174] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:34,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:34,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:34,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126439212] [2022-07-13 22:05:34,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:34,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:34,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:34,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:34,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:34,796 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-13 22:05:34,798 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 918 places, 855 transitions, 8047 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:34,798 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:34,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-13 22:05:34,798 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:37,587 INFO L129 PetriNetUnfolder]: 1715/6786 cut-off events. [2022-07-13 22:05:37,588 INFO L130 PetriNetUnfolder]: For 57337/57659 co-relation queries the response was YES. [2022-07-13 22:05:37,696 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25324 conditions, 6786 events. 1715/6786 cut-off events. For 57337/57659 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 78426 event pairs, 660 based on Foata normal form. 59/6356 useless extension candidates. Maximal degree in co-relation 25143. Up to 1529 conditions per place. [2022-07-13 22:05:37,721 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 300 selfloop transitions, 161 changer transitions 14/916 dead transitions. [2022-07-13 22:05:37,722 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 933 places, 916 transitions, 9717 flow [2022-07-13 22:05:37,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:05:37,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-13 22:05:37,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7991 transitions. [2022-07-13 22:05:37,725 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7734223770809137 [2022-07-13 22:05:37,725 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7991 transitions. [2022-07-13 22:05:37,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7991 transitions. [2022-07-13 22:05:37,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:37,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7991 transitions. [2022-07-13 22:05:37,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 443.94444444444446) internal successors, (7991), 18 states have internal predecessors, (7991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:37,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:37,736 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 574.0) internal successors, (10906), 19 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:37,737 INFO L186 Difference]: Start difference. First operand has 918 places, 855 transitions, 8047 flow. Second operand 18 states and 7991 transitions. [2022-07-13 22:05:37,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 933 places, 916 transitions, 9717 flow [2022-07-13 22:05:38,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 931 places, 916 transitions, 9537 flow, removed 90 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:38,097 INFO L242 Difference]: Finished difference. Result has 939 places, 876 transitions, 8709 flow [2022-07-13 22:05:38,098 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=7869, PETRI_DIFFERENCE_MINUEND_PLACES=914, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=855, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=708, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8709, PETRI_PLACES=939, PETRI_TRANSITIONS=876} [2022-07-13 22:05:38,099 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 416 predicate places. [2022-07-13 22:05:38,099 INFO L495 AbstractCegarLoop]: Abstraction has has 939 places, 876 transitions, 8709 flow [2022-07-13 22:05:38,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,099 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:38,100 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:38,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 22:05:38,100 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:38,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:38,100 INFO L85 PathProgramCache]: Analyzing trace with hash -738031714, now seen corresponding path program 16 times [2022-07-13 22:05:38,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:38,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42717296] [2022-07-13 22:05:38,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:38,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:38,231 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 22:05:38,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:38,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42717296] [2022-07-13 22:05:38,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42717296] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:38,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:38,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:38,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349394776] [2022-07-13 22:05:38,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:38,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:38,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:38,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:38,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:38,236 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-13 22:05:38,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 939 places, 876 transitions, 8709 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:38,238 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:38,238 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-13 22:05:38,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:05:41,041 INFO L129 PetriNetUnfolder]: 1780/7381 cut-off events. [2022-07-13 22:05:41,042 INFO L130 PetriNetUnfolder]: For 64193/64518 co-relation queries the response was YES. [2022-07-13 22:05:41,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27447 conditions, 7381 events. 1780/7381 cut-off events. For 64193/64518 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 87250 event pairs, 828 based on Foata normal form. 50/6911 useless extension candidates. Maximal degree in co-relation 27259. Up to 1565 conditions per place. [2022-07-13 22:05:41,212 INFO L132 encePairwiseOnDemand]: 561/574 looper letters, 342 selfloop transitions, 134 changer transitions 12/929 dead transitions. [2022-07-13 22:05:41,212 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 953 places, 929 transitions, 10419 flow [2022-07-13 22:05:41,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:05:41,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:05:41,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 7553 transitions. [2022-07-13 22:05:41,220 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7740315638450502 [2022-07-13 22:05:41,220 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 7553 transitions. [2022-07-13 22:05:41,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 7553 transitions. [2022-07-13 22:05:41,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:05:41,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 7553 transitions. [2022-07-13 22:05:41,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 444.29411764705884) internal successors, (7553), 17 states have internal predecessors, (7553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:41,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 574.0) internal successors, (10332), 18 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:41,236 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 574.0) internal successors, (10332), 18 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:41,236 INFO L186 Difference]: Start difference. First operand has 939 places, 876 transitions, 8709 flow. Second operand 17 states and 7553 transitions. [2022-07-13 22:05:41,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 953 places, 929 transitions, 10419 flow [2022-07-13 22:05:41,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 951 places, 929 transitions, 10201 flow, removed 109 selfloop flow, removed 2 redundant places. [2022-07-13 22:05:41,675 INFO L242 Difference]: Finished difference. Result has 960 places, 897 transitions, 9341 flow [2022-07-13 22:05:41,675 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=574, PETRI_DIFFERENCE_MINUEND_FLOW=8535, PETRI_DIFFERENCE_MINUEND_PLACES=935, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=876, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=757, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9341, PETRI_PLACES=960, PETRI_TRANSITIONS=897} [2022-07-13 22:05:41,676 INFO L279 CegarLoopForPetriNet]: 523 programPoint places, 437 predicate places. [2022-07-13 22:05:41,676 INFO L495 AbstractCegarLoop]: Abstraction has has 960 places, 897 transitions, 9341 flow [2022-07-13 22:05:41,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:41,677 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:05:41,677 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:41,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 22:05:41,677 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:05:41,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:05:41,678 INFO L85 PathProgramCache]: Analyzing trace with hash 783047828, now seen corresponding path program 17 times [2022-07-13 22:05:41,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:05:41,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061763485] [2022-07-13 22:05:41,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:05:41,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:05:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:05:41,822 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 22:05:41,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:05:41,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061763485] [2022-07-13 22:05:41,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061763485] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:05:41,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:05:41,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:05:41,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949575391] [2022-07-13 22:05:41,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:05:41,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:05:41,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:05:41,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:05:41,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:05:41,827 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 574 [2022-07-13 22:05:41,829 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 960 places, 897 transitions, 9341 flow. Second operand has 10 states, 10 states have (on average 443.8) internal successors, (4438), 10 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:05:41,829 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:05:41,829 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 574 [2022-07-13 22:05:41,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand