./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/test-easy7.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/test-easy7.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 89875838ba00841ab95f284d6aeb82a1a762d2b06c5f173202307480dc57b4e4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:58:44,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:58:44,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:58:44,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:58:44,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:58:44,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:58:44,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:58:44,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:58:44,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:58:44,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:58:44,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:58:44,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:58:44,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:58:44,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:58:44,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:58:44,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:58:44,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:58:44,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:58:44,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:58:44,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:58:45,000 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:58:45,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:58:45,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:58:45,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:58:45,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:58:45,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:58:45,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:58:45,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:58:45,007 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:58:45,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:58:45,008 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:58:45,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:58:45,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:58:45,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:58:45,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:58:45,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:58:45,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:58:45,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:58:45,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:58:45,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:58:45,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:58:45,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:58:45,015 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:58:45,043 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:58:45,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:58:45,044 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:58:45,044 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:58:45,044 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:58:45,045 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:58:45,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:58:45,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:58:45,046 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:58:45,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:58:45,047 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:58:45,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:58:45,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:58:45,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:58:45,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:58:45,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:58:45,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:58:45,048 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:58:45,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:58:45,048 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:58:45,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:58:45,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:58:45,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:58:45,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:58:45,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:58:45,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:58:45,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:58:45,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:58:45,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:58:45,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:58:45,050 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:58:45,050 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:58:45,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:58:45,050 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89875838ba00841ab95f284d6aeb82a1a762d2b06c5f173202307480dc57b4e4 [2022-07-22 21:58:45,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:58:45,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:58:45,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:58:45,290 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:58:45,291 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:58:45,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy7.wvr.c [2022-07-22 21:58:45,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da1f39dfa/d6d68b97bfa346069d2f8248f1d052c0/FLAGa7babba36 [2022-07-22 21:58:45,702 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:58:45,703 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy7.wvr.c [2022-07-22 21:58:45,708 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da1f39dfa/d6d68b97bfa346069d2f8248f1d052c0/FLAGa7babba36 [2022-07-22 21:58:45,724 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da1f39dfa/d6d68b97bfa346069d2f8248f1d052c0 [2022-07-22 21:58:45,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:58:45,727 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:58:45,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:58:45,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:58:45,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:58:45,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:58:45" (1/1) ... [2022-07-22 21:58:45,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d1e1886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:58:45, skipping insertion in model container [2022-07-22 21:58:45,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:58:45" (1/1) ... [2022-07-22 21:58:45,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:58:45,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:58:45,883 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/test-easy7.wvr.c[1872,1885] [2022-07-22 21:58:45,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:58:45,890 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:58:45,910 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/test-easy7.wvr.c[1872,1885] [2022-07-22 21:58:45,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:58:45,923 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:58:45,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:58:45 WrapperNode [2022-07-22 21:58:45,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:58:45,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:58:45,925 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:58:45,925 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:58:45,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:58:45" (1/1) ... [2022-07-22 21:58:45,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:58:45" (1/1) ... [2022-07-22 21:58:45,951 INFO L137 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2022-07-22 21:58:45,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:58:45,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:58:45,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:58:45,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:58:45,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:58:45" (1/1) ... [2022-07-22 21:58:45,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:58:45" (1/1) ... [2022-07-22 21:58:45,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:58:45" (1/1) ... [2022-07-22 21:58:45,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:58:45" (1/1) ... [2022-07-22 21:58:45,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:58:45" (1/1) ... [2022-07-22 21:58:45,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:58:45" (1/1) ... [2022-07-22 21:58:45,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:58:45" (1/1) ... [2022-07-22 21:58:45,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:58:45,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:58:45,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:58:45,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:58:45,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:58:45" (1/1) ... [2022-07-22 21:58:45,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:58:45,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:58:45,999 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 21:58:46,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 21:58:46,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:58:46,026 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-22 21:58:46,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-22 21:58:46,026 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-22 21:58:46,027 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-22 21:58:46,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:58:46,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:58:46,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:58:46,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:58:46,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:58:46,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:58:46,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:58:46,029 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:58:46,111 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:58:46,124 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:58:46,316 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:58:46,322 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:58:46,322 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 21:58:46,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:58:46 BoogieIcfgContainer [2022-07-22 21:58:46,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:58:46,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:58:46,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:58:46,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:58:46,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:58:45" (1/3) ... [2022-07-22 21:58:46,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@495829b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:58:46, skipping insertion in model container [2022-07-22 21:58:46,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:58:45" (2/3) ... [2022-07-22 21:58:46,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@495829b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:58:46, skipping insertion in model container [2022-07-22 21:58:46,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:58:46" (3/3) ... [2022-07-22 21:58:46,334 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy7.wvr.c [2022-07-22 21:58:46,339 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:58:46,345 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:58:46,345 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:58:46,346 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:58:46,409 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-22 21:58:46,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 94 transitions, 204 flow [2022-07-22 21:58:46,505 INFO L129 PetriNetUnfolder]: 2/92 cut-off events. [2022-07-22 21:58:46,505 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-22 21:58:46,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 92 events. 2/92 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2022-07-22 21:58:46,507 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 94 transitions, 204 flow [2022-07-22 21:58:46,511 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 83 transitions, 178 flow [2022-07-22 21:58:46,523 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:58:46,530 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@4bd150a6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6002fe48 [2022-07-22 21:58:46,530 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-22 21:58:46,552 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2022-07-22 21:58:46,552 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-22 21:58:46,553 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:58:46,554 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] [2022-07-22 21:58:46,554 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:58:46,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:58:46,558 INFO L85 PathProgramCache]: Analyzing trace with hash 126118782, now seen corresponding path program 1 times [2022-07-22 21:58:46,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:58:46,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298412330] [2022-07-22 21:58:46,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:58:46,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:58:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:58:47,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:58:47,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:58:47,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298412330] [2022-07-22 21:58:47,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298412330] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:58:47,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:58:47,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:58:47,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060942903] [2022-07-22 21:58:47,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:58:47,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:58:47,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:58:47,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:58:47,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:58:47,568 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:58:47,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 83 transitions, 178 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:47,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:58:47,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:58:47,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:58:48,586 INFO L129 PetriNetUnfolder]: 179/515 cut-off events. [2022-07-22 21:58:48,586 INFO L130 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2022-07-22 21:58:48,588 INFO L84 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 515 events. 179/515 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2117 event pairs, 133 based on Foata normal form. 3/511 useless extension candidates. Maximal degree in co-relation 824. Up to 332 conditions per place. [2022-07-22 21:58:48,591 INFO L132 encePairwiseOnDemand]: 60/94 looper letters, 47 selfloop transitions, 28 changer transitions 34/148 dead transitions. [2022-07-22 21:58:48,592 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 148 transitions, 535 flow [2022-07-22 21:58:48,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-22 21:58:48,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-22 21:58:48,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1583 transitions. [2022-07-22 21:58:48,606 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5613475177304964 [2022-07-22 21:58:48,607 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1583 transitions. [2022-07-22 21:58:48,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1583 transitions. [2022-07-22 21:58:48,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:58:48,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1583 transitions. [2022-07-22 21:58:48,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 52.766666666666666) internal successors, (1583), 30 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:48,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:48,626 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:48,628 INFO L186 Difference]: Start difference. First operand has 88 places, 83 transitions, 178 flow. Second operand 30 states and 1583 transitions. [2022-07-22 21:58:48,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 148 transitions, 535 flow [2022-07-22 21:58:48,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 148 transitions, 521 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-22 21:58:48,635 INFO L242 Difference]: Finished difference. Result has 136 places, 103 transitions, 360 flow [2022-07-22 21:58:48,636 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=360, PETRI_PLACES=136, PETRI_TRANSITIONS=103} [2022-07-22 21:58:48,639 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 48 predicate places. [2022-07-22 21:58:48,639 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 103 transitions, 360 flow [2022-07-22 21:58:48,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:48,640 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:58:48,640 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] [2022-07-22 21:58:48,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:58:48,641 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:58:48,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:58:48,641 INFO L85 PathProgramCache]: Analyzing trace with hash 99695484, now seen corresponding path program 2 times [2022-07-22 21:58:48,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:58:48,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326649260] [2022-07-22 21:58:48,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:58:48,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:58:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:58:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:58:49,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:58:49,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326649260] [2022-07-22 21:58:49,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326649260] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:58:49,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:58:49,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-22 21:58:49,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822716659] [2022-07-22 21:58:49,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:58:49,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 21:58:49,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:58:49,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 21:58:49,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-07-22 21:58:49,113 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:58:49,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 103 transitions, 360 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:49,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:58:49,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:58:49,114 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:58:50,044 INFO L129 PetriNetUnfolder]: 202/559 cut-off events. [2022-07-22 21:58:50,044 INFO L130 PetriNetUnfolder]: For 243/243 co-relation queries the response was YES. [2022-07-22 21:58:50,047 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1546 conditions, 559 events. 202/559 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2483 event pairs, 22 based on Foata normal form. 1/558 useless extension candidates. Maximal degree in co-relation 1515. Up to 329 conditions per place. [2022-07-22 21:58:50,049 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 82 selfloop transitions, 42 changer transitions 36/199 dead transitions. [2022-07-22 21:58:50,049 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 199 transitions, 1049 flow [2022-07-22 21:58:50,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-22 21:58:50,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-22 21:58:50,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1561 transitions. [2022-07-22 21:58:50,054 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5726338958180485 [2022-07-22 21:58:50,054 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1561 transitions. [2022-07-22 21:58:50,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1561 transitions. [2022-07-22 21:58:50,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:58:50,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1561 transitions. [2022-07-22 21:58:50,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 53.827586206896555) internal successors, (1561), 29 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:50,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:50,062 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:50,062 INFO L186 Difference]: Start difference. First operand has 136 places, 103 transitions, 360 flow. Second operand 29 states and 1561 transitions. [2022-07-22 21:58:50,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 199 transitions, 1049 flow [2022-07-22 21:58:50,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 199 transitions, 955 flow, removed 38 selfloop flow, removed 13 redundant places. [2022-07-22 21:58:50,069 INFO L242 Difference]: Finished difference. Result has 156 places, 139 transitions, 637 flow [2022-07-22 21:58:50,069 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=637, PETRI_PLACES=156, PETRI_TRANSITIONS=139} [2022-07-22 21:58:50,070 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 68 predicate places. [2022-07-22 21:58:50,070 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 139 transitions, 637 flow [2022-07-22 21:58:50,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:50,071 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:58:50,071 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] [2022-07-22 21:58:50,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:58:50,071 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:58:50,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:58:50,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1215992582, now seen corresponding path program 3 times [2022-07-22 21:58:50,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:58:50,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237824979] [2022-07-22 21:58:50,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:58:50,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:58:50,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:58:50,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:58:50,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:58:50,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237824979] [2022-07-22 21:58:50,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237824979] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:58:50,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:58:50,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-22 21:58:50,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595228638] [2022-07-22 21:58:50,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:58:50,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 21:58:50,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:58:50,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 21:58:50,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-07-22 21:58:50,486 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:58:50,487 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 139 transitions, 637 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:50,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:58:50,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:58:50,488 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:58:51,862 INFO L129 PetriNetUnfolder]: 240/645 cut-off events. [2022-07-22 21:58:51,862 INFO L130 PetriNetUnfolder]: For 821/821 co-relation queries the response was YES. [2022-07-22 21:58:51,865 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2261 conditions, 645 events. 240/645 cut-off events. For 821/821 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3009 event pairs, 40 based on Foata normal form. 1/643 useless extension candidates. Maximal degree in co-relation 2220. Up to 401 conditions per place. [2022-07-22 21:58:51,868 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 102 selfloop transitions, 56 changer transitions 43/240 dead transitions. [2022-07-22 21:58:51,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 240 transitions, 1595 flow [2022-07-22 21:58:51,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-22 21:58:51,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-07-22 21:58:51,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2062 transitions. [2022-07-22 21:58:51,873 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5624659028914348 [2022-07-22 21:58:51,873 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2062 transitions. [2022-07-22 21:58:51,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2062 transitions. [2022-07-22 21:58:51,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:58:51,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2062 transitions. [2022-07-22 21:58:51,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 52.87179487179487) internal successors, (2062), 39 states have internal predecessors, (2062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:51,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:51,883 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:51,883 INFO L186 Difference]: Start difference. First operand has 156 places, 139 transitions, 637 flow. Second operand 39 states and 2062 transitions. [2022-07-22 21:58:51,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 240 transitions, 1595 flow [2022-07-22 21:58:51,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 240 transitions, 1454 flow, removed 66 selfloop flow, removed 11 redundant places. [2022-07-22 21:58:51,893 INFO L242 Difference]: Finished difference. Result has 201 places, 182 transitions, 1065 flow [2022-07-22 21:58:51,893 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1065, PETRI_PLACES=201, PETRI_TRANSITIONS=182} [2022-07-22 21:58:51,894 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 113 predicate places. [2022-07-22 21:58:51,894 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 182 transitions, 1065 flow [2022-07-22 21:58:51,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:51,895 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:58:51,895 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] [2022-07-22 21:58:51,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:58:51,895 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:58:51,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:58:51,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1665333946, now seen corresponding path program 4 times [2022-07-22 21:58:51,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:58:51,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837337737] [2022-07-22 21:58:51,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:58:51,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:58:51,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:58:52,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:58:52,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:58:52,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837337737] [2022-07-22 21:58:52,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837337737] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:58:52,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:58:52,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:58:52,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720647992] [2022-07-22 21:58:52,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:58:52,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:58:52,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:58:52,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:58:52,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:58:52,251 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:58:52,252 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 182 transitions, 1065 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:52,252 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:58:52,252 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:58:52,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:58:53,219 INFO L129 PetriNetUnfolder]: 238/637 cut-off events. [2022-07-22 21:58:53,220 INFO L130 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2022-07-22 21:58:53,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2624 conditions, 637 events. 238/637 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3001 event pairs, 5 based on Foata normal form. 1/637 useless extension candidates. Maximal degree in co-relation 2564. Up to 403 conditions per place. [2022-07-22 21:58:53,226 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 111 selfloop transitions, 53 changer transitions 44/247 dead transitions. [2022-07-22 21:58:53,227 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 247 transitions, 1855 flow [2022-07-22 21:58:53,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-22 21:58:53,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-22 21:58:53,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1502 transitions. [2022-07-22 21:58:53,230 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5706686930091185 [2022-07-22 21:58:53,230 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1502 transitions. [2022-07-22 21:58:53,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1502 transitions. [2022-07-22 21:58:53,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:58:53,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1502 transitions. [2022-07-22 21:58:53,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 53.642857142857146) internal successors, (1502), 28 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:53,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 94.0) internal successors, (2726), 29 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:53,237 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 94.0) internal successors, (2726), 29 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:53,237 INFO L186 Difference]: Start difference. First operand has 201 places, 182 transitions, 1065 flow. Second operand 28 states and 1502 transitions. [2022-07-22 21:58:53,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 247 transitions, 1855 flow [2022-07-22 21:58:53,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 247 transitions, 1633 flow, removed 89 selfloop flow, removed 18 redundant places. [2022-07-22 21:58:53,248 INFO L242 Difference]: Finished difference. Result has 213 places, 187 transitions, 1114 flow [2022-07-22 21:58:53,249 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1114, PETRI_PLACES=213, PETRI_TRANSITIONS=187} [2022-07-22 21:58:53,249 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 125 predicate places. [2022-07-22 21:58:53,249 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 187 transitions, 1114 flow [2022-07-22 21:58:53,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:53,250 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:58:53,250 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] [2022-07-22 21:58:53,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:58:53,250 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:58:53,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:58:53,267 INFO L85 PathProgramCache]: Analyzing trace with hash 699227332, now seen corresponding path program 5 times [2022-07-22 21:58:53,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:58:53,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876617777] [2022-07-22 21:58:53,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:58:53,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:58:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:58:53,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:58:53,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:58:53,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876617777] [2022-07-22 21:58:53,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876617777] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:58:53,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:58:53,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 21:58:53,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843813419] [2022-07-22 21:58:53,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:58:53,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 21:58:53,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:58:53,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 21:58:53,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 21:58:53,661 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:58:53,662 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 187 transitions, 1114 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:53,662 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:58:53,662 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:58:53,662 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:58:54,804 INFO L129 PetriNetUnfolder]: 261/695 cut-off events. [2022-07-22 21:58:54,805 INFO L130 PetriNetUnfolder]: For 1976/1976 co-relation queries the response was YES. [2022-07-22 21:58:54,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2995 conditions, 695 events. 261/695 cut-off events. For 1976/1976 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3361 event pairs, 20 based on Foata normal form. 1/694 useless extension candidates. Maximal degree in co-relation 2932. Up to 446 conditions per place. [2022-07-22 21:58:54,811 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 131 selfloop transitions, 61 changer transitions 43/274 dead transitions. [2022-07-22 21:58:54,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 274 transitions, 2242 flow [2022-07-22 21:58:54,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-22 21:58:54,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-22 21:58:54,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1861 transitions. [2022-07-22 21:58:54,815 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5656534954407295 [2022-07-22 21:58:54,815 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1861 transitions. [2022-07-22 21:58:54,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1861 transitions. [2022-07-22 21:58:54,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:58:54,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1861 transitions. [2022-07-22 21:58:54,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.17142857142857) internal successors, (1861), 35 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:54,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:54,822 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:54,822 INFO L186 Difference]: Start difference. First operand has 213 places, 187 transitions, 1114 flow. Second operand 35 states and 1861 transitions. [2022-07-22 21:58:54,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 274 transitions, 2242 flow [2022-07-22 21:58:54,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 274 transitions, 1993 flow, removed 66 selfloop flow, removed 24 redundant places. [2022-07-22 21:58:54,833 INFO L242 Difference]: Finished difference. Result has 234 places, 215 transitions, 1438 flow [2022-07-22 21:58:54,834 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1438, PETRI_PLACES=234, PETRI_TRANSITIONS=215} [2022-07-22 21:58:54,834 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 146 predicate places. [2022-07-22 21:58:54,834 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 215 transitions, 1438 flow [2022-07-22 21:58:54,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:54,835 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:58:54,835 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] [2022-07-22 21:58:54,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:58:54,835 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:58:54,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:58:54,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1519473010, now seen corresponding path program 6 times [2022-07-22 21:58:54,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:58:54,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202812449] [2022-07-22 21:58:54,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:58:54,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:58:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:58:55,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:58:55,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:58:55,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202812449] [2022-07-22 21:58:55,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202812449] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:58:55,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:58:55,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:58:55,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511587099] [2022-07-22 21:58:55,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:58:55,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:58:55,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:58:55,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:58:55,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:58:55,174 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:58:55,175 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 215 transitions, 1438 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:55,175 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:58:55,175 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:58:55,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:58:56,240 INFO L129 PetriNetUnfolder]: 265/713 cut-off events. [2022-07-22 21:58:56,241 INFO L130 PetriNetUnfolder]: For 2404/2404 co-relation queries the response was YES. [2022-07-22 21:58:56,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3176 conditions, 713 events. 265/713 cut-off events. For 2404/2404 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3505 event pairs, 19 based on Foata normal form. 1/712 useless extension candidates. Maximal degree in co-relation 3104. Up to 459 conditions per place. [2022-07-22 21:58:56,248 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 126 selfloop transitions, 74 changer transitions 43/282 dead transitions. [2022-07-22 21:58:56,248 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 282 transitions, 2337 flow [2022-07-22 21:58:56,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 21:58:56,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-22 21:58:56,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1657 transitions. [2022-07-22 21:58:56,252 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5686341798215512 [2022-07-22 21:58:56,252 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1657 transitions. [2022-07-22 21:58:56,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1657 transitions. [2022-07-22 21:58:56,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:58:56,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1657 transitions. [2022-07-22 21:58:56,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.45161290322581) internal successors, (1657), 31 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:56,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:56,263 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:56,264 INFO L186 Difference]: Start difference. First operand has 234 places, 215 transitions, 1438 flow. Second operand 31 states and 1657 transitions. [2022-07-22 21:58:56,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 282 transitions, 2337 flow [2022-07-22 21:58:56,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 282 transitions, 2057 flow, removed 109 selfloop flow, removed 23 redundant places. [2022-07-22 21:58:56,279 INFO L242 Difference]: Finished difference. Result has 245 places, 224 transitions, 1536 flow [2022-07-22 21:58:56,280 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1238, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1536, PETRI_PLACES=245, PETRI_TRANSITIONS=224} [2022-07-22 21:58:56,282 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 157 predicate places. [2022-07-22 21:58:56,282 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 224 transitions, 1536 flow [2022-07-22 21:58:56,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:56,282 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:58:56,283 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] [2022-07-22 21:58:56,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:58:56,283 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:58:56,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:58:56,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1541157144, now seen corresponding path program 7 times [2022-07-22 21:58:56,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:58:56,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203288163] [2022-07-22 21:58:56,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:58:56,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:58:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:58:56,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:58:56,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:58:56,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203288163] [2022-07-22 21:58:56,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203288163] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:58:56,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:58:56,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:58:56,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919169673] [2022-07-22 21:58:56,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:58:56,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:58:56,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:58:56,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:58:56,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:58:56,634 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:58:56,635 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 224 transitions, 1536 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:56,635 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:58:56,635 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:58:56,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:58:57,694 INFO L129 PetriNetUnfolder]: 264/746 cut-off events. [2022-07-22 21:58:57,695 INFO L130 PetriNetUnfolder]: For 2496/2496 co-relation queries the response was YES. [2022-07-22 21:58:57,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3276 conditions, 746 events. 264/746 cut-off events. For 2496/2496 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3749 event pairs, 27 based on Foata normal form. 1/745 useless extension candidates. Maximal degree in co-relation 3202. Up to 448 conditions per place. [2022-07-22 21:58:57,701 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 124 selfloop transitions, 76 changer transitions 44/283 dead transitions. [2022-07-22 21:58:57,701 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 283 transitions, 2405 flow [2022-07-22 21:58:57,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 21:58:57,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-22 21:58:57,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1658 transitions. [2022-07-22 21:58:57,703 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5689773507206589 [2022-07-22 21:58:57,703 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1658 transitions. [2022-07-22 21:58:57,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1658 transitions. [2022-07-22 21:58:57,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:58:57,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1658 transitions. [2022-07-22 21:58:57,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.483870967741936) internal successors, (1658), 31 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:57,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:57,709 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:57,709 INFO L186 Difference]: Start difference. First operand has 245 places, 224 transitions, 1536 flow. Second operand 31 states and 1658 transitions. [2022-07-22 21:58:57,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 283 transitions, 2405 flow [2022-07-22 21:58:57,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 283 transitions, 2194 flow, removed 48 selfloop flow, removed 26 redundant places. [2022-07-22 21:58:57,724 INFO L242 Difference]: Finished difference. Result has 255 places, 224 transitions, 1617 flow [2022-07-22 21:58:57,724 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1617, PETRI_PLACES=255, PETRI_TRANSITIONS=224} [2022-07-22 21:58:57,725 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 167 predicate places. [2022-07-22 21:58:57,725 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 224 transitions, 1617 flow [2022-07-22 21:58:57,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:57,725 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:58:57,725 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] [2022-07-22 21:58:57,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:58:57,726 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:58:57,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:58:57,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1783083334, now seen corresponding path program 8 times [2022-07-22 21:58:57,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:58:57,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466024985] [2022-07-22 21:58:57,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:58:57,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:58:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:58:58,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:58:58,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:58:58,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466024985] [2022-07-22 21:58:58,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466024985] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:58:58,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:58:58,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:58:58,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899255874] [2022-07-22 21:58:58,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:58:58,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:58:58,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:58:58,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:58:58,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:58:58,046 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:58:58,046 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 224 transitions, 1617 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:58,046 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:58:58,047 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:58:58,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:58:59,083 INFO L129 PetriNetUnfolder]: 260/735 cut-off events. [2022-07-22 21:58:59,083 INFO L130 PetriNetUnfolder]: For 2603/2603 co-relation queries the response was YES. [2022-07-22 21:58:59,087 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3340 conditions, 735 events. 260/735 cut-off events. For 2603/2603 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3649 event pairs, 33 based on Foata normal form. 1/734 useless extension candidates. Maximal degree in co-relation 3261. Up to 456 conditions per place. [2022-07-22 21:58:59,090 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 126 selfloop transitions, 73 changer transitions 39/277 dead transitions. [2022-07-22 21:58:59,090 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 277 transitions, 2429 flow [2022-07-22 21:58:59,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-22 21:58:59,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-22 21:58:59,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1603 transitions. [2022-07-22 21:58:59,092 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5684397163120567 [2022-07-22 21:58:59,093 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1603 transitions. [2022-07-22 21:58:59,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1603 transitions. [2022-07-22 21:58:59,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:58:59,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1603 transitions. [2022-07-22 21:58:59,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.43333333333333) internal successors, (1603), 30 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) [2022-07-22 21:58:59,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:59,099 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:59,099 INFO L186 Difference]: Start difference. First operand has 255 places, 224 transitions, 1617 flow. Second operand 30 states and 1603 transitions. [2022-07-22 21:58:59,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 277 transitions, 2429 flow [2022-07-22 21:58:59,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 277 transitions, 2192 flow, removed 35 selfloop flow, removed 29 redundant places. [2022-07-22 21:58:59,115 INFO L242 Difference]: Finished difference. Result has 256 places, 223 transitions, 1629 flow [2022-07-22 21:58:59,115 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1629, PETRI_PLACES=256, PETRI_TRANSITIONS=223} [2022-07-22 21:58:59,116 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 168 predicate places. [2022-07-22 21:58:59,116 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 223 transitions, 1629 flow [2022-07-22 21:58:59,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:59,117 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:58:59,117 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] [2022-07-22 21:58:59,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:58:59,117 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:58:59,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:58:59,117 INFO L85 PathProgramCache]: Analyzing trace with hash -798716138, now seen corresponding path program 9 times [2022-07-22 21:58:59,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:58:59,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166401857] [2022-07-22 21:58:59,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:58:59,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:58:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:58:59,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:58:59,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:58:59,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166401857] [2022-07-22 21:58:59,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166401857] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:58:59,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:58:59,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-22 21:58:59,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822937218] [2022-07-22 21:58:59,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:58:59,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 21:58:59,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:58:59,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 21:58:59,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-07-22 21:58:59,614 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:58:59,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 223 transitions, 1629 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:58:59,615 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:58:59,615 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:58:59,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:01,785 INFO L129 PetriNetUnfolder]: 261/743 cut-off events. [2022-07-22 21:59:01,785 INFO L130 PetriNetUnfolder]: For 2968/2968 co-relation queries the response was YES. [2022-07-22 21:59:01,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3420 conditions, 743 events. 261/743 cut-off events. For 2968/2968 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3704 event pairs, 25 based on Foata normal form. 1/743 useless extension candidates. Maximal degree in co-relation 3343. Up to 460 conditions per place. [2022-07-22 21:59:01,792 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 129 selfloop transitions, 94 changer transitions 29/291 dead transitions. [2022-07-22 21:59:01,793 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 291 transitions, 2637 flow [2022-07-22 21:59:01,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-07-22 21:59:01,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-07-22 21:59:01,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2205 transitions. [2022-07-22 21:59:01,795 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2022-07-22 21:59:01,796 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2205 transitions. [2022-07-22 21:59:01,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2205 transitions. [2022-07-22 21:59:01,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:01,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2205 transitions. [2022-07-22 21:59:01,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 52.5) internal successors, (2205), 42 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:01,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:01,804 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:01,804 INFO L186 Difference]: Start difference. First operand has 256 places, 223 transitions, 1629 flow. Second operand 42 states and 2205 transitions. [2022-07-22 21:59:01,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 291 transitions, 2637 flow [2022-07-22 21:59:01,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 291 transitions, 2381 flow, removed 68 selfloop flow, removed 28 redundant places. [2022-07-22 21:59:01,821 INFO L242 Difference]: Finished difference. Result has 273 places, 244 transitions, 1891 flow [2022-07-22 21:59:01,821 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1468, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=1891, PETRI_PLACES=273, PETRI_TRANSITIONS=244} [2022-07-22 21:59:01,822 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 185 predicate places. [2022-07-22 21:59:01,822 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 244 transitions, 1891 flow [2022-07-22 21:59:01,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:01,822 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:01,823 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] [2022-07-22 21:59:01,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 21:59:01,823 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:01,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:01,823 INFO L85 PathProgramCache]: Analyzing trace with hash -811115394, now seen corresponding path program 10 times [2022-07-22 21:59:01,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:01,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874425465] [2022-07-22 21:59:01,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:01,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:02,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:02,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:02,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874425465] [2022-07-22 21:59:02,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874425465] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:02,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:02,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 21:59:02,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789102722] [2022-07-22 21:59:02,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:02,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 21:59:02,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:02,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 21:59:02,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 21:59:02,154 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:02,155 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 244 transitions, 1891 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:02,155 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:02,155 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:02,156 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:03,365 INFO L129 PetriNetUnfolder]: 261/745 cut-off events. [2022-07-22 21:59:03,366 INFO L130 PetriNetUnfolder]: For 3276/3276 co-relation queries the response was YES. [2022-07-22 21:59:03,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3603 conditions, 745 events. 261/745 cut-off events. For 3276/3276 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3786 event pairs, 24 based on Foata normal form. 1/744 useless extension candidates. Maximal degree in co-relation 3521. Up to 477 conditions per place. [2022-07-22 21:59:03,375 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 138 selfloop transitions, 78 changer transitions 32/287 dead transitions. [2022-07-22 21:59:03,376 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 287 transitions, 2626 flow [2022-07-22 21:59:03,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-22 21:59:03,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-22 21:59:03,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1745 transitions. [2022-07-22 21:59:03,380 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5625402965828498 [2022-07-22 21:59:03,380 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1745 transitions. [2022-07-22 21:59:03,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1745 transitions. [2022-07-22 21:59:03,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:03,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1745 transitions. [2022-07-22 21:59:03,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.878787878787875) internal successors, (1745), 33 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:03,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:03,417 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:03,417 INFO L186 Difference]: Start difference. First operand has 273 places, 244 transitions, 1891 flow. Second operand 33 states and 1745 transitions. [2022-07-22 21:59:03,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 287 transitions, 2626 flow [2022-07-22 21:59:03,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 287 transitions, 2308 flow, removed 96 selfloop flow, removed 27 redundant places. [2022-07-22 21:59:03,436 INFO L242 Difference]: Finished difference. Result has 280 places, 241 transitions, 1804 flow [2022-07-22 21:59:03,437 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1623, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1804, PETRI_PLACES=280, PETRI_TRANSITIONS=241} [2022-07-22 21:59:03,438 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 192 predicate places. [2022-07-22 21:59:03,438 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 241 transitions, 1804 flow [2022-07-22 21:59:03,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:03,439 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:03,439 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] [2022-07-22 21:59:03,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 21:59:03,439 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:03,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:03,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1115730886, now seen corresponding path program 11 times [2022-07-22 21:59:03,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:03,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750724346] [2022-07-22 21:59:03,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:03,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:03,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:03,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:03,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750724346] [2022-07-22 21:59:03,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750724346] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:03,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:03,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 21:59:03,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463963659] [2022-07-22 21:59:03,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:03,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 21:59:03,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:03,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 21:59:03,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 21:59:03,771 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:03,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 241 transitions, 1804 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:03,771 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:03,771 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:03,771 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:04,769 INFO L129 PetriNetUnfolder]: 251/701 cut-off events. [2022-07-22 21:59:04,769 INFO L130 PetriNetUnfolder]: For 2886/2886 co-relation queries the response was YES. [2022-07-22 21:59:04,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3431 conditions, 701 events. 251/701 cut-off events. For 2886/2886 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3438 event pairs, 23 based on Foata normal form. 1/700 useless extension candidates. Maximal degree in co-relation 3347. Up to 465 conditions per place. [2022-07-22 21:59:04,786 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 134 selfloop transitions, 75 changer transitions 26/274 dead transitions. [2022-07-22 21:59:04,786 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 274 transitions, 2427 flow [2022-07-22 21:59:04,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 21:59:04,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-22 21:59:04,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1639 transitions. [2022-07-22 21:59:04,788 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5624571036376115 [2022-07-22 21:59:04,788 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1639 transitions. [2022-07-22 21:59:04,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1639 transitions. [2022-07-22 21:59:04,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:04,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1639 transitions. [2022-07-22 21:59:04,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 52.87096774193548) internal successors, (1639), 31 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:04,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:04,794 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:04,794 INFO L186 Difference]: Start difference. First operand has 280 places, 241 transitions, 1804 flow. Second operand 31 states and 1639 transitions. [2022-07-22 21:59:04,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 274 transitions, 2427 flow [2022-07-22 21:59:04,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 274 transitions, 2189 flow, removed 25 selfloop flow, removed 33 redundant places. [2022-07-22 21:59:04,813 INFO L242 Difference]: Finished difference. Result has 274 places, 234 transitions, 1729 flow [2022-07-22 21:59:04,813 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1729, PETRI_PLACES=274, PETRI_TRANSITIONS=234} [2022-07-22 21:59:04,813 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 186 predicate places. [2022-07-22 21:59:04,814 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 234 transitions, 1729 flow [2022-07-22 21:59:04,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:04,814 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:04,814 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] [2022-07-22 21:59:04,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 21:59:04,815 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:04,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:04,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1030533186, now seen corresponding path program 12 times [2022-07-22 21:59:04,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:04,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245519354] [2022-07-22 21:59:04,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:04,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:05,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:05,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:05,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245519354] [2022-07-22 21:59:05,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245519354] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:05,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:05,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-22 21:59:05,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688779684] [2022-07-22 21:59:05,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:05,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 21:59:05,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:05,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 21:59:05,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-07-22 21:59:05,193 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:05,193 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 234 transitions, 1729 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:05,193 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:05,193 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:05,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:06,227 INFO L129 PetriNetUnfolder]: 244/700 cut-off events. [2022-07-22 21:59:06,228 INFO L130 PetriNetUnfolder]: For 2595/2595 co-relation queries the response was YES. [2022-07-22 21:59:06,232 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3293 conditions, 700 events. 244/700 cut-off events. For 2595/2595 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3374 event pairs, 32 based on Foata normal form. 1/700 useless extension candidates. Maximal degree in co-relation 3212. Up to 460 conditions per place. [2022-07-22 21:59:06,235 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 130 selfloop transitions, 75 changer transitions 19/263 dead transitions. [2022-07-22 21:59:06,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 263 transitions, 2301 flow [2022-07-22 21:59:06,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 21:59:06,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-22 21:59:06,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1633 transitions. [2022-07-22 21:59:06,238 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.560398078242965 [2022-07-22 21:59:06,238 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1633 transitions. [2022-07-22 21:59:06,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1633 transitions. [2022-07-22 21:59:06,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:06,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1633 transitions. [2022-07-22 21:59:06,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 52.67741935483871) internal successors, (1633), 31 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:06,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:06,243 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:06,243 INFO L186 Difference]: Start difference. First operand has 274 places, 234 transitions, 1729 flow. Second operand 31 states and 1633 transitions. [2022-07-22 21:59:06,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 263 transitions, 2301 flow [2022-07-22 21:59:06,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 263 transitions, 2097 flow, removed 17 selfloop flow, removed 33 redundant places. [2022-07-22 21:59:06,259 INFO L242 Difference]: Finished difference. Result has 267 places, 231 transitions, 1700 flow [2022-07-22 21:59:06,260 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1700, PETRI_PLACES=267, PETRI_TRANSITIONS=231} [2022-07-22 21:59:06,260 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 179 predicate places. [2022-07-22 21:59:06,260 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 231 transitions, 1700 flow [2022-07-22 21:59:06,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:06,261 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:06,261 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] [2022-07-22 21:59:06,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 21:59:06,261 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:06,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:06,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1360263200, now seen corresponding path program 13 times [2022-07-22 21:59:06,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:06,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138751276] [2022-07-22 21:59:06,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:06,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:06,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:06,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:06,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138751276] [2022-07-22 21:59:06,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138751276] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:06,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:06,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-22 21:59:06,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697642161] [2022-07-22 21:59:06,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:06,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 21:59:06,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:06,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 21:59:06,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-07-22 21:59:06,618 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:06,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 231 transitions, 1700 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:06,619 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:06,619 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:06,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:08,212 INFO L129 PetriNetUnfolder]: 238/683 cut-off events. [2022-07-22 21:59:08,212 INFO L130 PetriNetUnfolder]: For 2350/2350 co-relation queries the response was YES. [2022-07-22 21:59:08,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3178 conditions, 683 events. 238/683 cut-off events. For 2350/2350 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3213 event pairs, 35 based on Foata normal form. 1/682 useless extension candidates. Maximal degree in co-relation 3101. Up to 452 conditions per place. [2022-07-22 21:59:08,219 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 123 selfloop transitions, 65 changer transitions 26/253 dead transitions. [2022-07-22 21:59:08,219 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 253 transitions, 2225 flow [2022-07-22 21:59:08,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-22 21:59:08,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-22 21:59:08,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1677 transitions. [2022-07-22 21:59:08,222 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5575132978723404 [2022-07-22 21:59:08,222 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1677 transitions. [2022-07-22 21:59:08,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1677 transitions. [2022-07-22 21:59:08,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:08,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1677 transitions. [2022-07-22 21:59:08,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.40625) internal successors, (1677), 32 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:08,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:08,246 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:08,246 INFO L186 Difference]: Start difference. First operand has 267 places, 231 transitions, 1700 flow. Second operand 32 states and 1677 transitions. [2022-07-22 21:59:08,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 253 transitions, 2225 flow [2022-07-22 21:59:08,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 253 transitions, 2037 flow, removed 9 selfloop flow, removed 31 redundant places. [2022-07-22 21:59:08,277 INFO L242 Difference]: Finished difference. Result has 264 places, 215 transitions, 1558 flow [2022-07-22 21:59:08,277 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1558, PETRI_PLACES=264, PETRI_TRANSITIONS=215} [2022-07-22 21:59:08,277 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 176 predicate places. [2022-07-22 21:59:08,278 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 215 transitions, 1558 flow [2022-07-22 21:59:08,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:08,278 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:08,278 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] [2022-07-22 21:59:08,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 21:59:08,278 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:08,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:08,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1690499486, now seen corresponding path program 14 times [2022-07-22 21:59:08,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:08,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75662371] [2022-07-22 21:59:08,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:08,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:08,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:08,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:08,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75662371] [2022-07-22 21:59:08,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75662371] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:08,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:08,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 21:59:08,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614125419] [2022-07-22 21:59:08,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:08,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 21:59:08,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:08,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 21:59:08,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 21:59:08,614 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:08,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 215 transitions, 1558 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:08,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:08,615 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:08,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:09,771 INFO L129 PetriNetUnfolder]: 260/745 cut-off events. [2022-07-22 21:59:09,771 INFO L130 PetriNetUnfolder]: For 2570/2570 co-relation queries the response was YES. [2022-07-22 21:59:09,775 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3362 conditions, 745 events. 260/745 cut-off events. For 2570/2570 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3759 event pairs, 37 based on Foata normal form. 1/743 useless extension candidates. Maximal degree in co-relation 3287. Up to 436 conditions per place. [2022-07-22 21:59:09,777 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 120 selfloop transitions, 83 changer transitions 42/284 dead transitions. [2022-07-22 21:59:09,777 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 284 transitions, 2512 flow [2022-07-22 21:59:09,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-22 21:59:09,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-22 21:59:09,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1861 transitions. [2022-07-22 21:59:09,780 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5656534954407295 [2022-07-22 21:59:09,780 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1861 transitions. [2022-07-22 21:59:09,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1861 transitions. [2022-07-22 21:59:09,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:09,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1861 transitions. [2022-07-22 21:59:09,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.17142857142857) internal successors, (1861), 35 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:09,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:09,784 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:09,784 INFO L186 Difference]: Start difference. First operand has 264 places, 215 transitions, 1558 flow. Second operand 35 states and 1861 transitions. [2022-07-22 21:59:09,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 284 transitions, 2512 flow [2022-07-22 21:59:09,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 284 transitions, 2221 flow, removed 45 selfloop flow, removed 29 redundant places. [2022-07-22 21:59:09,797 INFO L242 Difference]: Finished difference. Result has 256 places, 224 transitions, 1654 flow [2022-07-22 21:59:09,798 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1654, PETRI_PLACES=256, PETRI_TRANSITIONS=224} [2022-07-22 21:59:09,798 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 168 predicate places. [2022-07-22 21:59:09,798 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 224 transitions, 1654 flow [2022-07-22 21:59:09,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:09,799 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:09,799 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] [2022-07-22 21:59:09,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 21:59:09,799 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:09,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:09,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1409575526, now seen corresponding path program 15 times [2022-07-22 21:59:09,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:09,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102859131] [2022-07-22 21:59:09,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:09,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:10,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:10,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:10,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102859131] [2022-07-22 21:59:10,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102859131] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:10,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:10,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:59:10,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282759279] [2022-07-22 21:59:10,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:10,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:59:10,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:10,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:59:10,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:59:10,074 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:10,074 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 224 transitions, 1654 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:10,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:10,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:10,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:11,167 INFO L129 PetriNetUnfolder]: 272/762 cut-off events. [2022-07-22 21:59:11,167 INFO L130 PetriNetUnfolder]: For 3705/3705 co-relation queries the response was YES. [2022-07-22 21:59:11,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3673 conditions, 762 events. 272/762 cut-off events. For 3705/3705 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3719 event pairs, 23 based on Foata normal form. 1/760 useless extension candidates. Maximal degree in co-relation 3596. Up to 458 conditions per place. [2022-07-22 21:59:11,175 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 138 selfloop transitions, 101 changer transitions 22/300 dead transitions. [2022-07-22 21:59:11,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 300 transitions, 2850 flow [2022-07-22 21:59:11,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-22 21:59:11,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-22 21:59:11,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1818 transitions. [2022-07-22 21:59:11,177 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5688360450563203 [2022-07-22 21:59:11,177 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1818 transitions. [2022-07-22 21:59:11,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1818 transitions. [2022-07-22 21:59:11,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:11,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1818 transitions. [2022-07-22 21:59:11,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.470588235294116) internal successors, (1818), 34 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:11,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:11,182 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:11,182 INFO L186 Difference]: Start difference. First operand has 256 places, 224 transitions, 1654 flow. Second operand 34 states and 1818 transitions. [2022-07-22 21:59:11,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 300 transitions, 2850 flow [2022-07-22 21:59:11,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 300 transitions, 2572 flow, removed 73 selfloop flow, removed 29 redundant places. [2022-07-22 21:59:11,200 INFO L242 Difference]: Finished difference. Result has 260 places, 251 transitions, 2016 flow [2022-07-22 21:59:11,200 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2016, PETRI_PLACES=260, PETRI_TRANSITIONS=251} [2022-07-22 21:59:11,202 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 172 predicate places. [2022-07-22 21:59:11,203 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 251 transitions, 2016 flow [2022-07-22 21:59:11,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:11,203 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:11,203 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:59:11,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 21:59:11,203 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:11,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:11,204 INFO L85 PathProgramCache]: Analyzing trace with hash 2084111022, now seen corresponding path program 16 times [2022-07-22 21:59:11,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:11,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440355256] [2022-07-22 21:59:11,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:11,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:11,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:11,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:11,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440355256] [2022-07-22 21:59:11,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440355256] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:11,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:11,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-22 21:59:11,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910638520] [2022-07-22 21:59:11,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:11,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 21:59:11,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:11,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 21:59:11,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-07-22 21:59:11,505 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:11,506 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 251 transitions, 2016 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:11,506 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:11,506 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:11,506 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:12,391 INFO L129 PetriNetUnfolder]: 280/785 cut-off events. [2022-07-22 21:59:12,391 INFO L130 PetriNetUnfolder]: For 3938/3938 co-relation queries the response was YES. [2022-07-22 21:59:12,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3914 conditions, 785 events. 280/785 cut-off events. For 3938/3938 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3937 event pairs, 25 based on Foata normal form. 1/783 useless extension candidates. Maximal degree in co-relation 3839. Up to 487 conditions per place. [2022-07-22 21:59:12,397 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 151 selfloop transitions, 89 changer transitions 29/308 dead transitions. [2022-07-22 21:59:12,397 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 308 transitions, 3040 flow [2022-07-22 21:59:12,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-22 21:59:12,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-22 21:59:12,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1560 transitions. [2022-07-22 21:59:12,399 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5722670579603815 [2022-07-22 21:59:12,399 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1560 transitions. [2022-07-22 21:59:12,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1560 transitions. [2022-07-22 21:59:12,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:12,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1560 transitions. [2022-07-22 21:59:12,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 53.793103448275865) internal successors, (1560), 29 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:12,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:12,403 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:12,403 INFO L186 Difference]: Start difference. First operand has 260 places, 251 transitions, 2016 flow. Second operand 29 states and 1560 transitions. [2022-07-22 21:59:12,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 308 transitions, 3040 flow [2022-07-22 21:59:12,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 308 transitions, 2719 flow, removed 122 selfloop flow, removed 14 redundant places. [2022-07-22 21:59:12,421 INFO L242 Difference]: Finished difference. Result has 278 places, 259 transitions, 2077 flow [2022-07-22 21:59:12,422 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1743, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2077, PETRI_PLACES=278, PETRI_TRANSITIONS=259} [2022-07-22 21:59:12,422 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 190 predicate places. [2022-07-22 21:59:12,422 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 259 transitions, 2077 flow [2022-07-22 21:59:12,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:12,423 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:12,423 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] [2022-07-22 21:59:12,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 21:59:12,423 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:12,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:12,424 INFO L85 PathProgramCache]: Analyzing trace with hash -2051877010, now seen corresponding path program 17 times [2022-07-22 21:59:12,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:12,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396899368] [2022-07-22 21:59:12,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:12,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:12,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:12,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:12,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396899368] [2022-07-22 21:59:12,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396899368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:12,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:12,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:59:12,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118694294] [2022-07-22 21:59:12,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:12,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:59:12,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:12,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:59:12,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:59:12,694 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:12,695 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 259 transitions, 2077 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:12,695 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:12,695 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:12,695 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:13,723 INFO L129 PetriNetUnfolder]: 278/784 cut-off events. [2022-07-22 21:59:13,723 INFO L130 PetriNetUnfolder]: For 4212/4212 co-relation queries the response was YES. [2022-07-22 21:59:13,728 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3998 conditions, 784 events. 278/784 cut-off events. For 4212/4212 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3955 event pairs, 25 based on Foata normal form. 1/782 useless extension candidates. Maximal degree in co-relation 3914. Up to 483 conditions per place. [2022-07-22 21:59:13,731 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 149 selfloop transitions, 85 changer transitions 35/308 dead transitions. [2022-07-22 21:59:13,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 308 transitions, 3007 flow [2022-07-22 21:59:13,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 21:59:13,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-22 21:59:13,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1658 transitions. [2022-07-22 21:59:13,733 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5689773507206589 [2022-07-22 21:59:13,733 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1658 transitions. [2022-07-22 21:59:13,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1658 transitions. [2022-07-22 21:59:13,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:13,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1658 transitions. [2022-07-22 21:59:13,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.483870967741936) internal successors, (1658), 31 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:13,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:13,738 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:13,738 INFO L186 Difference]: Start difference. First operand has 278 places, 259 transitions, 2077 flow. Second operand 31 states and 1658 transitions. [2022-07-22 21:59:13,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 308 transitions, 3007 flow [2022-07-22 21:59:13,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 308 transitions, 2721 flow, removed 64 selfloop flow, removed 27 redundant places. [2022-07-22 21:59:13,758 INFO L242 Difference]: Finished difference. Result has 286 places, 256 transitions, 2053 flow [2022-07-22 21:59:13,759 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1831, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2053, PETRI_PLACES=286, PETRI_TRANSITIONS=256} [2022-07-22 21:59:13,759 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 198 predicate places. [2022-07-22 21:59:13,759 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 256 transitions, 2053 flow [2022-07-22 21:59:13,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:13,760 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:13,760 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] [2022-07-22 21:59:13,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 21:59:13,760 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:13,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:13,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1422442310, now seen corresponding path program 18 times [2022-07-22 21:59:13,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:13,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674179998] [2022-07-22 21:59:13,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:13,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:14,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:14,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:14,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674179998] [2022-07-22 21:59:14,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674179998] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:14,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:14,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:59:14,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448742284] [2022-07-22 21:59:14,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:14,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:59:14,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:14,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:59:14,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:59:14,027 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:14,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 256 transitions, 2053 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:14,028 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:14,028 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:14,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:15,052 INFO L129 PetriNetUnfolder]: 274/768 cut-off events. [2022-07-22 21:59:15,052 INFO L130 PetriNetUnfolder]: For 3941/3941 co-relation queries the response was YES. [2022-07-22 21:59:15,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3953 conditions, 768 events. 274/768 cut-off events. For 3941/3941 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3832 event pairs, 24 based on Foata normal form. 1/766 useless extension candidates. Maximal degree in co-relation 3868. Up to 481 conditions per place. [2022-07-22 21:59:15,058 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 147 selfloop transitions, 92 changer transitions 26/304 dead transitions. [2022-07-22 21:59:15,058 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 304 transitions, 2973 flow [2022-07-22 21:59:15,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-22 21:59:15,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-22 21:59:15,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1606 transitions. [2022-07-22 21:59:15,059 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5695035460992908 [2022-07-22 21:59:15,059 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1606 transitions. [2022-07-22 21:59:15,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1606 transitions. [2022-07-22 21:59:15,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:15,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1606 transitions. [2022-07-22 21:59:15,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.53333333333333) internal successors, (1606), 30 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:15,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:15,063 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:15,063 INFO L186 Difference]: Start difference. First operand has 286 places, 256 transitions, 2053 flow. Second operand 30 states and 1606 transitions. [2022-07-22 21:59:15,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 304 transitions, 2973 flow [2022-07-22 21:59:15,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 304 transitions, 2719 flow, removed 24 selfloop flow, removed 28 redundant places. [2022-07-22 21:59:15,084 INFO L242 Difference]: Finished difference. Result has 286 places, 259 transitions, 2104 flow [2022-07-22 21:59:15,084 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1826, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2104, PETRI_PLACES=286, PETRI_TRANSITIONS=259} [2022-07-22 21:59:15,084 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 198 predicate places. [2022-07-22 21:59:15,085 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 259 transitions, 2104 flow [2022-07-22 21:59:15,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:15,085 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:15,085 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] [2022-07-22 21:59:15,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 21:59:15,085 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:15,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:15,086 INFO L85 PathProgramCache]: Analyzing trace with hash 2093389318, now seen corresponding path program 19 times [2022-07-22 21:59:15,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:15,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280967062] [2022-07-22 21:59:15,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:15,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:15,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:15,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:15,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280967062] [2022-07-22 21:59:15,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280967062] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:15,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:15,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:59:15,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213379279] [2022-07-22 21:59:15,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:15,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:59:15,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:15,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:59:15,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:59:15,348 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:15,349 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 259 transitions, 2104 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:15,349 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:15,349 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:15,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:16,285 INFO L129 PetriNetUnfolder]: 280/787 cut-off events. [2022-07-22 21:59:16,285 INFO L130 PetriNetUnfolder]: For 4356/4356 co-relation queries the response was YES. [2022-07-22 21:59:16,289 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4093 conditions, 787 events. 280/787 cut-off events. For 4356/4356 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3990 event pairs, 26 based on Foata normal form. 1/784 useless extension candidates. Maximal degree in co-relation 4008. Up to 511 conditions per place. [2022-07-22 21:59:16,292 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 165 selfloop transitions, 78 changer transitions 30/312 dead transitions. [2022-07-22 21:59:16,292 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 312 transitions, 3125 flow [2022-07-22 21:59:16,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 21:59:16,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-22 21:59:16,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1651 transitions. [2022-07-22 21:59:16,297 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5665751544269046 [2022-07-22 21:59:16,297 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1651 transitions. [2022-07-22 21:59:16,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1651 transitions. [2022-07-22 21:59:16,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:16,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1651 transitions. [2022-07-22 21:59:16,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.25806451612903) internal successors, (1651), 31 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:16,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:16,301 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:16,301 INFO L186 Difference]: Start difference. First operand has 286 places, 259 transitions, 2104 flow. Second operand 31 states and 1651 transitions. [2022-07-22 21:59:16,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 312 transitions, 3125 flow [2022-07-22 21:59:16,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 312 transitions, 2890 flow, removed 47 selfloop flow, removed 26 redundant places. [2022-07-22 21:59:16,321 INFO L242 Difference]: Finished difference. Result has 297 places, 266 transitions, 2244 flow [2022-07-22 21:59:16,321 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1925, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2244, PETRI_PLACES=297, PETRI_TRANSITIONS=266} [2022-07-22 21:59:16,321 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 209 predicate places. [2022-07-22 21:59:16,321 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 266 transitions, 2244 flow [2022-07-22 21:59:16,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:16,321 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:16,321 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] [2022-07-22 21:59:16,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 21:59:16,322 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:16,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:16,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1511959520, now seen corresponding path program 20 times [2022-07-22 21:59:16,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:16,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952018329] [2022-07-22 21:59:16,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:16,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:16,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:16,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:16,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952018329] [2022-07-22 21:59:16,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952018329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:16,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:16,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 21:59:16,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313193239] [2022-07-22 21:59:16,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:16,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 21:59:16,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:16,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 21:59:16,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 21:59:16,590 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:16,591 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 266 transitions, 2244 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:16,591 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:16,591 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:16,591 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:17,687 INFO L129 PetriNetUnfolder]: 278/791 cut-off events. [2022-07-22 21:59:17,687 INFO L130 PetriNetUnfolder]: For 4509/4509 co-relation queries the response was YES. [2022-07-22 21:59:17,692 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4160 conditions, 791 events. 278/791 cut-off events. For 4509/4509 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4047 event pairs, 23 based on Foata normal form. 1/789 useless extension candidates. Maximal degree in co-relation 4069. Up to 503 conditions per place. [2022-07-22 21:59:17,695 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 155 selfloop transitions, 86 changer transitions 30/310 dead transitions. [2022-07-22 21:59:17,695 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 310 transitions, 3174 flow [2022-07-22 21:59:17,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-22 21:59:17,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-22 21:59:17,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1701 transitions. [2022-07-22 21:59:17,697 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5654920212765957 [2022-07-22 21:59:17,697 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1701 transitions. [2022-07-22 21:59:17,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1701 transitions. [2022-07-22 21:59:17,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:17,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1701 transitions. [2022-07-22 21:59:17,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.15625) internal successors, (1701), 32 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:17,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:17,701 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:17,701 INFO L186 Difference]: Start difference. First operand has 297 places, 266 transitions, 2244 flow. Second operand 32 states and 1701 transitions. [2022-07-22 21:59:17,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 310 transitions, 3174 flow [2022-07-22 21:59:17,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 310 transitions, 2977 flow, removed 39 selfloop flow, removed 26 redundant places. [2022-07-22 21:59:17,725 INFO L242 Difference]: Finished difference. Result has 304 places, 264 transitions, 2304 flow [2022-07-22 21:59:17,725 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2077, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2304, PETRI_PLACES=304, PETRI_TRANSITIONS=264} [2022-07-22 21:59:17,725 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 216 predicate places. [2022-07-22 21:59:17,725 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 264 transitions, 2304 flow [2022-07-22 21:59:17,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:17,726 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:17,726 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] [2022-07-22 21:59:17,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 21:59:17,726 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:17,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:17,727 INFO L85 PathProgramCache]: Analyzing trace with hash -462340898, now seen corresponding path program 21 times [2022-07-22 21:59:17,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:17,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039918413] [2022-07-22 21:59:17,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:17,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:18,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:18,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:18,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039918413] [2022-07-22 21:59:18,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039918413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:18,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:18,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:59:18,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80288383] [2022-07-22 21:59:18,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:18,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:59:18,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:18,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:59:18,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:59:18,033 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:18,033 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 264 transitions, 2304 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:18,033 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:18,033 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:18,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:19,023 INFO L129 PetriNetUnfolder]: 274/774 cut-off events. [2022-07-22 21:59:19,023 INFO L130 PetriNetUnfolder]: For 4679/4679 co-relation queries the response was YES. [2022-07-22 21:59:19,027 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4169 conditions, 774 events. 274/774 cut-off events. For 4679/4679 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3863 event pairs, 21 based on Foata normal form. 1/772 useless extension candidates. Maximal degree in co-relation 4077. Up to 472 conditions per place. [2022-07-22 21:59:19,029 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 151 selfloop transitions, 98 changer transitions 26/314 dead transitions. [2022-07-22 21:59:19,029 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 314 transitions, 3258 flow [2022-07-22 21:59:19,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 21:59:19,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-22 21:59:19,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1659 transitions. [2022-07-22 21:59:19,031 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5693205216197667 [2022-07-22 21:59:19,031 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1659 transitions. [2022-07-22 21:59:19,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1659 transitions. [2022-07-22 21:59:19,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:19,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1659 transitions. [2022-07-22 21:59:19,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.516129032258064) internal successors, (1659), 31 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:19,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:19,035 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:19,035 INFO L186 Difference]: Start difference. First operand has 304 places, 264 transitions, 2304 flow. Second operand 31 states and 1659 transitions. [2022-07-22 21:59:19,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 314 transitions, 3258 flow [2022-07-22 21:59:19,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 314 transitions, 3017 flow, removed 49 selfloop flow, removed 30 redundant places. [2022-07-22 21:59:19,058 INFO L242 Difference]: Finished difference. Result has 305 places, 267 transitions, 2388 flow [2022-07-22 21:59:19,058 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2109, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2388, PETRI_PLACES=305, PETRI_TRANSITIONS=267} [2022-07-22 21:59:19,058 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 217 predicate places. [2022-07-22 21:59:19,059 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 267 transitions, 2388 flow [2022-07-22 21:59:19,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:19,059 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:19,059 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] [2022-07-22 21:59:19,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 21:59:19,059 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:19,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:19,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1766688790, now seen corresponding path program 22 times [2022-07-22 21:59:19,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:19,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772851480] [2022-07-22 21:59:19,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:19,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:19,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:19,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:19,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772851480] [2022-07-22 21:59:19,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772851480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:19,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:19,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-22 21:59:19,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116904802] [2022-07-22 21:59:19,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:19,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 21:59:19,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:19,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 21:59:19,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-07-22 21:59:19,355 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:19,356 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 267 transitions, 2388 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:19,356 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:19,356 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:19,356 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:20,516 INFO L129 PetriNetUnfolder]: 275/781 cut-off events. [2022-07-22 21:59:20,516 INFO L130 PetriNetUnfolder]: For 4192/4192 co-relation queries the response was YES. [2022-07-22 21:59:20,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4232 conditions, 781 events. 275/781 cut-off events. For 4192/4192 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3918 event pairs, 22 based on Foata normal form. 1/779 useless extension candidates. Maximal degree in co-relation 4138. Up to 505 conditions per place. [2022-07-22 21:59:20,523 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 159 selfloop transitions, 91 changer transitions 22/311 dead transitions. [2022-07-22 21:59:20,523 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 311 transitions, 3282 flow [2022-07-22 21:59:20,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-22 21:59:20,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-22 21:59:20,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1798 transitions. [2022-07-22 21:59:20,525 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5625782227784731 [2022-07-22 21:59:20,525 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1798 transitions. [2022-07-22 21:59:20,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1798 transitions. [2022-07-22 21:59:20,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:20,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1798 transitions. [2022-07-22 21:59:20,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.88235294117647) internal successors, (1798), 34 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:20,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:20,529 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:20,529 INFO L186 Difference]: Start difference. First operand has 305 places, 267 transitions, 2388 flow. Second operand 34 states and 1798 transitions. [2022-07-22 21:59:20,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 311 transitions, 3282 flow [2022-07-22 21:59:20,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 311 transitions, 3014 flow, removed 32 selfloop flow, removed 28 redundant places. [2022-07-22 21:59:20,553 INFO L242 Difference]: Finished difference. Result has 313 places, 272 transitions, 2453 flow [2022-07-22 21:59:20,554 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2169, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2453, PETRI_PLACES=313, PETRI_TRANSITIONS=272} [2022-07-22 21:59:20,554 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 225 predicate places. [2022-07-22 21:59:20,554 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 272 transitions, 2453 flow [2022-07-22 21:59:20,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:20,554 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:20,554 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] [2022-07-22 21:59:20,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 21:59:20,555 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:20,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:20,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1582155802, now seen corresponding path program 23 times [2022-07-22 21:59:20,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:20,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369571333] [2022-07-22 21:59:20,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:20,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:20,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:20,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:20,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369571333] [2022-07-22 21:59:20,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369571333] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:20,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:20,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:59:20,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574872963] [2022-07-22 21:59:20,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:20,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:59:20,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:20,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:59:20,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:59:20,813 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:20,814 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 272 transitions, 2453 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:20,814 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:20,814 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:20,814 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:22,020 INFO L129 PetriNetUnfolder]: 276/788 cut-off events. [2022-07-22 21:59:22,020 INFO L130 PetriNetUnfolder]: For 4695/4695 co-relation queries the response was YES. [2022-07-22 21:59:22,025 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4329 conditions, 788 events. 276/788 cut-off events. For 4695/4695 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4005 event pairs, 18 based on Foata normal form. 1/787 useless extension candidates. Maximal degree in co-relation 4234. Up to 503 conditions per place. [2022-07-22 21:59:22,027 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 161 selfloop transitions, 98 changer transitions 21/319 dead transitions. [2022-07-22 21:59:22,027 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 319 transitions, 3414 flow [2022-07-22 21:59:22,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-22 21:59:22,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-22 21:59:22,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1706 transitions. [2022-07-22 21:59:22,041 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.567154255319149 [2022-07-22 21:59:22,041 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1706 transitions. [2022-07-22 21:59:22,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1706 transitions. [2022-07-22 21:59:22,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:22,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1706 transitions. [2022-07-22 21:59:22,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.3125) internal successors, (1706), 32 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:22,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:22,046 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:22,046 INFO L186 Difference]: Start difference. First operand has 313 places, 272 transitions, 2453 flow. Second operand 32 states and 1706 transitions. [2022-07-22 21:59:22,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 319 transitions, 3414 flow [2022-07-22 21:59:22,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 319 transitions, 3211 flow, removed 37 selfloop flow, removed 27 redundant places. [2022-07-22 21:59:22,071 INFO L242 Difference]: Finished difference. Result has 322 places, 278 transitions, 2613 flow [2022-07-22 21:59:22,072 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2280, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2613, PETRI_PLACES=322, PETRI_TRANSITIONS=278} [2022-07-22 21:59:22,072 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 234 predicate places. [2022-07-22 21:59:22,072 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 278 transitions, 2613 flow [2022-07-22 21:59:22,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:22,072 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:22,073 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] [2022-07-22 21:59:22,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 21:59:22,074 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:22,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:22,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1449125434, now seen corresponding path program 24 times [2022-07-22 21:59:22,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:22,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780586876] [2022-07-22 21:59:22,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:22,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:22,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:22,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:22,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780586876] [2022-07-22 21:59:22,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780586876] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:22,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:22,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:59:22,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145033013] [2022-07-22 21:59:22,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:22,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:59:22,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:22,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:59:22,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:59:22,388 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:22,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 278 transitions, 2613 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:22,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:22,388 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:22,388 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:23,663 INFO L129 PetriNetUnfolder]: 269/789 cut-off events. [2022-07-22 21:59:23,663 INFO L130 PetriNetUnfolder]: For 4915/4915 co-relation queries the response was YES. [2022-07-22 21:59:23,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4392 conditions, 789 events. 269/789 cut-off events. For 4915/4915 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4030 event pairs, 22 based on Foata normal form. 1/787 useless extension candidates. Maximal degree in co-relation 4291. Up to 507 conditions per place. [2022-07-22 21:59:23,684 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 162 selfloop transitions, 92 changer transitions 18/311 dead transitions. [2022-07-22 21:59:23,684 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 311 transitions, 3355 flow [2022-07-22 21:59:23,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-22 21:59:23,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-22 21:59:23,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1597 transitions. [2022-07-22 21:59:23,686 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5663120567375887 [2022-07-22 21:59:23,686 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1597 transitions. [2022-07-22 21:59:23,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1597 transitions. [2022-07-22 21:59:23,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:23,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1597 transitions. [2022-07-22 21:59:23,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.233333333333334) internal successors, (1597), 30 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:23,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:23,690 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:23,690 INFO L186 Difference]: Start difference. First operand has 322 places, 278 transitions, 2613 flow. Second operand 30 states and 1597 transitions. [2022-07-22 21:59:23,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 311 transitions, 3355 flow [2022-07-22 21:59:23,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 311 transitions, 3165 flow, removed 32 selfloop flow, removed 25 redundant places. [2022-07-22 21:59:23,718 INFO L242 Difference]: Finished difference. Result has 327 places, 275 transitions, 2626 flow [2022-07-22 21:59:23,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2431, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2626, PETRI_PLACES=327, PETRI_TRANSITIONS=275} [2022-07-22 21:59:23,719 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 239 predicate places. [2022-07-22 21:59:23,719 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 275 transitions, 2626 flow [2022-07-22 21:59:23,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:23,719 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:23,720 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] [2022-07-22 21:59:23,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 21:59:23,720 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:23,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:23,720 INFO L85 PathProgramCache]: Analyzing trace with hash -771716962, now seen corresponding path program 25 times [2022-07-22 21:59:23,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:23,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942572574] [2022-07-22 21:59:23,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:23,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:24,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:24,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:24,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942572574] [2022-07-22 21:59:24,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942572574] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:24,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:24,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 21:59:24,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3809008] [2022-07-22 21:59:24,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:24,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 21:59:24,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:24,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 21:59:24,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 21:59:24,032 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:24,032 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 275 transitions, 2626 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:24,032 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:24,032 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:24,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:25,571 INFO L129 PetriNetUnfolder]: 275/790 cut-off events. [2022-07-22 21:59:25,571 INFO L130 PetriNetUnfolder]: For 5300/5300 co-relation queries the response was YES. [2022-07-22 21:59:25,576 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4565 conditions, 790 events. 275/790 cut-off events. For 5300/5300 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4016 event pairs, 21 based on Foata normal form. 1/787 useless extension candidates. Maximal degree in co-relation 4462. Up to 498 conditions per place. [2022-07-22 21:59:25,578 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 156 selfloop transitions, 105 changer transitions 21/321 dead transitions. [2022-07-22 21:59:25,578 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 321 transitions, 3615 flow [2022-07-22 21:59:25,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-22 21:59:25,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-22 21:59:25,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1756 transitions. [2022-07-22 21:59:25,588 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.56608639587363 [2022-07-22 21:59:25,589 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1756 transitions. [2022-07-22 21:59:25,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1756 transitions. [2022-07-22 21:59:25,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:25,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1756 transitions. [2022-07-22 21:59:25,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.21212121212121) internal successors, (1756), 33 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:25,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:25,592 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:25,592 INFO L186 Difference]: Start difference. First operand has 327 places, 275 transitions, 2626 flow. Second operand 33 states and 1756 transitions. [2022-07-22 21:59:25,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 321 transitions, 3615 flow [2022-07-22 21:59:25,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 321 transitions, 3349 flow, removed 21 selfloop flow, removed 31 redundant places. [2022-07-22 21:59:25,621 INFO L242 Difference]: Finished difference. Result has 331 places, 280 transitions, 2745 flow [2022-07-22 21:59:25,621 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2384, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2745, PETRI_PLACES=331, PETRI_TRANSITIONS=280} [2022-07-22 21:59:25,621 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 243 predicate places. [2022-07-22 21:59:25,621 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 280 transitions, 2745 flow [2022-07-22 21:59:25,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:25,622 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:25,622 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] [2022-07-22 21:59:25,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 21:59:25,622 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:25,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:25,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1151247688, now seen corresponding path program 26 times [2022-07-22 21:59:25,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:25,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924606866] [2022-07-22 21:59:25,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:25,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:25,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:25,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:25,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924606866] [2022-07-22 21:59:25,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924606866] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:25,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:25,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-22 21:59:25,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876593610] [2022-07-22 21:59:25,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:25,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 21:59:25,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:25,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 21:59:25,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-07-22 21:59:25,924 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:25,925 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 280 transitions, 2745 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:25,925 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:25,925 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:25,925 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:27,132 INFO L129 PetriNetUnfolder]: 268/779 cut-off events. [2022-07-22 21:59:27,133 INFO L130 PetriNetUnfolder]: For 5642/5642 co-relation queries the response was YES. [2022-07-22 21:59:27,138 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4563 conditions, 779 events. 268/779 cut-off events. For 5642/5642 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4011 event pairs, 20 based on Foata normal form. 1/776 useless extension candidates. Maximal degree in co-relation 4457. Up to 522 conditions per place. [2022-07-22 21:59:27,140 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 168 selfloop transitions, 82 changer transitions 21/310 dead transitions. [2022-07-22 21:59:27,140 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 310 transitions, 3465 flow [2022-07-22 21:59:27,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-22 21:59:27,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-22 21:59:27,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1689 transitions. [2022-07-22 21:59:27,142 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5615026595744681 [2022-07-22 21:59:27,142 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1689 transitions. [2022-07-22 21:59:27,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1689 transitions. [2022-07-22 21:59:27,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:27,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1689 transitions. [2022-07-22 21:59:27,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.78125) internal successors, (1689), 32 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:27,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:27,146 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:27,146 INFO L186 Difference]: Start difference. First operand has 331 places, 280 transitions, 2745 flow. Second operand 32 states and 1689 transitions. [2022-07-22 21:59:27,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 310 transitions, 3465 flow [2022-07-22 21:59:27,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 310 transitions, 3251 flow, removed 42 selfloop flow, removed 26 redundant places. [2022-07-22 21:59:27,176 INFO L242 Difference]: Finished difference. Result has 337 places, 274 transitions, 2648 flow [2022-07-22 21:59:27,177 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2545, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2648, PETRI_PLACES=337, PETRI_TRANSITIONS=274} [2022-07-22 21:59:27,178 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 249 predicate places. [2022-07-22 21:59:27,178 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 274 transitions, 2648 flow [2022-07-22 21:59:27,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:27,179 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:27,179 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] [2022-07-22 21:59:27,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 21:59:27,180 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:27,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:27,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1179211540, now seen corresponding path program 27 times [2022-07-22 21:59:27,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:27,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874430995] [2022-07-22 21:59:27,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:27,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:27,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:27,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:27,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874430995] [2022-07-22 21:59:27,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874430995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:27,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:27,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-22 21:59:27,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636768445] [2022-07-22 21:59:27,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:27,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 21:59:27,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:27,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 21:59:27,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-07-22 21:59:27,542 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:27,543 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 274 transitions, 2648 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:27,543 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:27,543 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:27,543 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:29,468 INFO L129 PetriNetUnfolder]: 263/763 cut-off events. [2022-07-22 21:59:29,468 INFO L130 PetriNetUnfolder]: For 5128/5128 co-relation queries the response was YES. [2022-07-22 21:59:29,473 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4457 conditions, 763 events. 263/763 cut-off events. For 5128/5128 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3837 event pairs, 22 based on Foata normal form. 1/760 useless extension candidates. Maximal degree in co-relation 4354. Up to 514 conditions per place. [2022-07-22 21:59:29,476 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 165 selfloop transitions, 84 changer transitions 17/305 dead transitions. [2022-07-22 21:59:29,476 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 305 transitions, 3420 flow [2022-07-22 21:59:29,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-22 21:59:29,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-22 21:59:29,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1837 transitions. [2022-07-22 21:59:29,487 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5583586626139818 [2022-07-22 21:59:29,487 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1837 transitions. [2022-07-22 21:59:29,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1837 transitions. [2022-07-22 21:59:29,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:29,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1837 transitions. [2022-07-22 21:59:29,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.48571428571429) internal successors, (1837), 35 states have internal predecessors, (1837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:29,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:29,491 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:29,491 INFO L186 Difference]: Start difference. First operand has 337 places, 274 transitions, 2648 flow. Second operand 35 states and 1837 transitions. [2022-07-22 21:59:29,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 305 transitions, 3420 flow [2022-07-22 21:59:29,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 305 transitions, 3109 flow, removed 18 selfloop flow, removed 36 redundant places. [2022-07-22 21:59:29,535 INFO L242 Difference]: Finished difference. Result has 334 places, 273 transitions, 2558 flow [2022-07-22 21:59:29,535 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2356, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2558, PETRI_PLACES=334, PETRI_TRANSITIONS=273} [2022-07-22 21:59:29,535 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 246 predicate places. [2022-07-22 21:59:29,535 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 273 transitions, 2558 flow [2022-07-22 21:59:29,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:29,536 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:29,536 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] [2022-07-22 21:59:29,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-22 21:59:29,536 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:29,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:29,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1837290896, now seen corresponding path program 28 times [2022-07-22 21:59:29,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:29,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759972438] [2022-07-22 21:59:29,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:29,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:29,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:29,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:29,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759972438] [2022-07-22 21:59:29,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759972438] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:29,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:29,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 21:59:29,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944641702] [2022-07-22 21:59:29,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:29,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 21:59:29,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:29,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 21:59:29,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 21:59:29,824 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:29,825 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 273 transitions, 2558 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:29,825 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:29,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:29,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:31,050 INFO L129 PetriNetUnfolder]: 262/761 cut-off events. [2022-07-22 21:59:31,050 INFO L130 PetriNetUnfolder]: For 5108/5108 co-relation queries the response was YES. [2022-07-22 21:59:31,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4334 conditions, 761 events. 262/761 cut-off events. For 5108/5108 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3848 event pairs, 21 based on Foata normal form. 1/759 useless extension candidates. Maximal degree in co-relation 4233. Up to 493 conditions per place. [2022-07-22 21:59:31,057 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 155 selfloop transitions, 94 changer transitions 18/306 dead transitions. [2022-07-22 21:59:31,057 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 306 transitions, 3298 flow [2022-07-22 21:59:31,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 21:59:31,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-22 21:59:31,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1646 transitions. [2022-07-22 21:59:31,072 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5648592999313659 [2022-07-22 21:59:31,072 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1646 transitions. [2022-07-22 21:59:31,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1646 transitions. [2022-07-22 21:59:31,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:31,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1646 transitions. [2022-07-22 21:59:31,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.096774193548384) internal successors, (1646), 31 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:31,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:31,076 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:31,077 INFO L186 Difference]: Start difference. First operand has 334 places, 273 transitions, 2558 flow. Second operand 31 states and 1646 transitions. [2022-07-22 21:59:31,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 306 transitions, 3298 flow [2022-07-22 21:59:31,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 306 transitions, 3069 flow, removed 26 selfloop flow, removed 34 redundant places. [2022-07-22 21:59:31,105 INFO L242 Difference]: Finished difference. Result has 330 places, 270 transitions, 2539 flow [2022-07-22 21:59:31,105 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2341, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2539, PETRI_PLACES=330, PETRI_TRANSITIONS=270} [2022-07-22 21:59:31,109 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 242 predicate places. [2022-07-22 21:59:31,109 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 270 transitions, 2539 flow [2022-07-22 21:59:31,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:31,109 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:31,110 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] [2022-07-22 21:59:31,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-22 21:59:31,110 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:31,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:31,110 INFO L85 PathProgramCache]: Analyzing trace with hash 681641326, now seen corresponding path program 29 times [2022-07-22 21:59:31,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:31,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501417488] [2022-07-22 21:59:31,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:31,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:31,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:31,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:31,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501417488] [2022-07-22 21:59:31,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501417488] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:31,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:31,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:59:31,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283634436] [2022-07-22 21:59:31,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:31,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:59:31,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:31,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:59:31,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:59:31,407 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:31,407 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 270 transitions, 2539 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:31,407 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:31,407 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:31,407 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:32,305 INFO L129 PetriNetUnfolder]: 262/761 cut-off events. [2022-07-22 21:59:32,305 INFO L130 PetriNetUnfolder]: For 4914/4914 co-relation queries the response was YES. [2022-07-22 21:59:32,310 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4358 conditions, 761 events. 262/761 cut-off events. For 4914/4914 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3826 event pairs, 17 based on Foata normal form. 1/759 useless extension candidates. Maximal degree in co-relation 4258. Up to 466 conditions per place. [2022-07-22 21:59:32,313 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 147 selfloop transitions, 111 changer transitions 19/316 dead transitions. [2022-07-22 21:59:32,313 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 316 transitions, 3517 flow [2022-07-22 21:59:32,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-22 21:59:32,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-22 21:59:32,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1553 transitions. [2022-07-22 21:59:32,314 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5696991929567131 [2022-07-22 21:59:32,314 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1553 transitions. [2022-07-22 21:59:32,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1553 transitions. [2022-07-22 21:59:32,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:32,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1553 transitions. [2022-07-22 21:59:32,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 53.55172413793103) internal successors, (1553), 29 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:32,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:32,317 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:32,318 INFO L186 Difference]: Start difference. First operand has 330 places, 270 transitions, 2539 flow. Second operand 29 states and 1553 transitions. [2022-07-22 21:59:32,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 316 transitions, 3517 flow [2022-07-22 21:59:32,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 316 transitions, 3219 flow, removed 15 selfloop flow, removed 32 redundant places. [2022-07-22 21:59:32,345 INFO L242 Difference]: Finished difference. Result has 325 places, 275 transitions, 2609 flow [2022-07-22 21:59:32,345 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2261, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2609, PETRI_PLACES=325, PETRI_TRANSITIONS=275} [2022-07-22 21:59:32,346 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 237 predicate places. [2022-07-22 21:59:32,346 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 275 transitions, 2609 flow [2022-07-22 21:59:32,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:32,346 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:32,346 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] [2022-07-22 21:59:32,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-22 21:59:32,347 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:32,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:32,347 INFO L85 PathProgramCache]: Analyzing trace with hash 860362678, now seen corresponding path program 30 times [2022-07-22 21:59:32,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:32,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41437689] [2022-07-22 21:59:32,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:32,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:32,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:32,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:32,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41437689] [2022-07-22 21:59:32,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41437689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:32,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:32,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-22 21:59:32,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23592223] [2022-07-22 21:59:32,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:32,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 21:59:32,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:32,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 21:59:32,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-07-22 21:59:32,649 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:32,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 275 transitions, 2609 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:32,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:32,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:32,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:35,463 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:59:35,778 INFO L129 PetriNetUnfolder]: 258/735 cut-off events. [2022-07-22 21:59:35,778 INFO L130 PetriNetUnfolder]: For 4990/4990 co-relation queries the response was YES. [2022-07-22 21:59:35,783 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4232 conditions, 735 events. 258/735 cut-off events. For 4990/4990 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3573 event pairs, 20 based on Foata normal form. 1/733 useless extension candidates. Maximal degree in co-relation 4133. Up to 505 conditions per place. [2022-07-22 21:59:35,785 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 166 selfloop transitions, 64 changer transitions 29/298 dead transitions. [2022-07-22 21:59:35,786 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 298 transitions, 3230 flow [2022-07-22 21:59:35,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-22 21:59:35,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-22 21:59:35,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1681 transitions. [2022-07-22 21:59:35,788 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.558843085106383 [2022-07-22 21:59:35,788 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1681 transitions. [2022-07-22 21:59:35,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1681 transitions. [2022-07-22 21:59:35,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:35,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1681 transitions. [2022-07-22 21:59:35,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.53125) internal successors, (1681), 32 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:35,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:35,791 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:35,791 INFO L186 Difference]: Start difference. First operand has 325 places, 275 transitions, 2609 flow. Second operand 32 states and 1681 transitions. [2022-07-22 21:59:35,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 298 transitions, 3230 flow [2022-07-22 21:59:35,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 298 transitions, 2964 flow, removed 41 selfloop flow, removed 25 redundant places. [2022-07-22 21:59:35,820 INFO L242 Difference]: Finished difference. Result has 330 places, 255 transitions, 2250 flow [2022-07-22 21:59:35,820 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2349, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2250, PETRI_PLACES=330, PETRI_TRANSITIONS=255} [2022-07-22 21:59:35,821 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 242 predicate places. [2022-07-22 21:59:35,821 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 255 transitions, 2250 flow [2022-07-22 21:59:35,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:35,821 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:35,821 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] [2022-07-22 21:59:35,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-22 21:59:35,821 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:35,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:35,822 INFO L85 PathProgramCache]: Analyzing trace with hash -575180962, now seen corresponding path program 31 times [2022-07-22 21:59:35,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:35,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149971796] [2022-07-22 21:59:35,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:35,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:36,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:36,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:36,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149971796] [2022-07-22 21:59:36,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149971796] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:36,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:36,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:59:36,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105929078] [2022-07-22 21:59:36,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:36,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:59:36,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:36,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:59:36,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:59:36,110 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:36,111 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 255 transitions, 2250 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:36,111 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:36,111 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:36,111 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:37,079 INFO L129 PetriNetUnfolder]: 261/731 cut-off events. [2022-07-22 21:59:37,079 INFO L130 PetriNetUnfolder]: For 4284/4284 co-relation queries the response was YES. [2022-07-22 21:59:37,083 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4043 conditions, 731 events. 261/731 cut-off events. For 4284/4284 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3544 event pairs, 17 based on Foata normal form. 1/729 useless extension candidates. Maximal degree in co-relation 3946. Up to 463 conditions per place. [2022-07-22 21:59:37,086 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 143 selfloop transitions, 97 changer transitions 18/297 dead transitions. [2022-07-22 21:59:37,086 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 297 transitions, 3101 flow [2022-07-22 21:59:37,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-22 21:59:37,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-22 21:59:37,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1602 transitions. [2022-07-22 21:59:37,087 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5680851063829787 [2022-07-22 21:59:37,087 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1602 transitions. [2022-07-22 21:59:37,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1602 transitions. [2022-07-22 21:59:37,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:37,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1602 transitions. [2022-07-22 21:59:37,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.4) internal successors, (1602), 30 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:37,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:37,090 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:37,090 INFO L186 Difference]: Start difference. First operand has 330 places, 255 transitions, 2250 flow. Second operand 30 states and 1602 transitions. [2022-07-22 21:59:37,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 297 transitions, 3101 flow [2022-07-22 21:59:37,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 297 transitions, 2818 flow, removed 35 selfloop flow, removed 37 redundant places. [2022-07-22 21:59:37,113 INFO L242 Difference]: Finished difference. Result has 301 places, 257 transitions, 2260 flow [2022-07-22 21:59:37,113 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1997, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2260, PETRI_PLACES=301, PETRI_TRANSITIONS=257} [2022-07-22 21:59:37,114 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 213 predicate places. [2022-07-22 21:59:37,114 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 257 transitions, 2260 flow [2022-07-22 21:59:37,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:37,114 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:37,114 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] [2022-07-22 21:59:37,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-22 21:59:37,115 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:37,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:37,115 INFO L85 PathProgramCache]: Analyzing trace with hash -397698678, now seen corresponding path program 32 times [2022-07-22 21:59:37,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:37,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090719597] [2022-07-22 21:59:37,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:37,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:37,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:37,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:37,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090719597] [2022-07-22 21:59:37,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090719597] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:37,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:37,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:59:37,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363555770] [2022-07-22 21:59:37,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:37,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:59:37,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:37,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:59:37,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:59:37,390 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:37,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 257 transitions, 2260 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:37,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:37,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:37,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:38,378 INFO L129 PetriNetUnfolder]: 256/718 cut-off events. [2022-07-22 21:59:38,378 INFO L130 PetriNetUnfolder]: For 4216/4216 co-relation queries the response was YES. [2022-07-22 21:59:38,382 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3933 conditions, 718 events. 256/718 cut-off events. For 4216/4216 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3428 event pairs, 18 based on Foata normal form. 1/716 useless extension candidates. Maximal degree in co-relation 3843. Up to 456 conditions per place. [2022-07-22 21:59:38,384 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 143 selfloop transitions, 100 changer transitions 14/296 dead transitions. [2022-07-22 21:59:38,384 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 296 transitions, 3085 flow [2022-07-22 21:59:38,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-22 21:59:38,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-22 21:59:38,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1701 transitions. [2022-07-22 21:59:38,386 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5654920212765957 [2022-07-22 21:59:38,386 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1701 transitions. [2022-07-22 21:59:38,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1701 transitions. [2022-07-22 21:59:38,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:38,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1701 transitions. [2022-07-22 21:59:38,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.15625) internal successors, (1701), 32 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:38,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:38,390 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:38,390 INFO L186 Difference]: Start difference. First operand has 301 places, 257 transitions, 2260 flow. Second operand 32 states and 1701 transitions. [2022-07-22 21:59:38,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 296 transitions, 3085 flow [2022-07-22 21:59:38,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 296 transitions, 2878 flow, removed 28 selfloop flow, removed 27 redundant places. [2022-07-22 21:59:38,412 INFO L242 Difference]: Finished difference. Result has 307 places, 260 transitions, 2363 flow [2022-07-22 21:59:38,413 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2074, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2363, PETRI_PLACES=307, PETRI_TRANSITIONS=260} [2022-07-22 21:59:38,413 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 219 predicate places. [2022-07-22 21:59:38,413 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 260 transitions, 2363 flow [2022-07-22 21:59:38,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:38,414 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:38,414 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] [2022-07-22 21:59:38,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-22 21:59:38,414 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:38,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:38,414 INFO L85 PathProgramCache]: Analyzing trace with hash -953887820, now seen corresponding path program 33 times [2022-07-22 21:59:38,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:38,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135640769] [2022-07-22 21:59:38,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:38,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:38,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:38,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:38,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135640769] [2022-07-22 21:59:38,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135640769] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:38,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:38,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 21:59:38,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621514186] [2022-07-22 21:59:38,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:38,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 21:59:38,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:38,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 21:59:38,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 21:59:38,694 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:38,695 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 260 transitions, 2363 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:38,695 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:38,695 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:38,695 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:39,865 INFO L129 PetriNetUnfolder]: 257/722 cut-off events. [2022-07-22 21:59:39,866 INFO L130 PetriNetUnfolder]: For 4059/4059 co-relation queries the response was YES. [2022-07-22 21:59:39,870 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4000 conditions, 722 events. 257/722 cut-off events. For 4059/4059 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3475 event pairs, 18 based on Foata normal form. 1/720 useless extension candidates. Maximal degree in co-relation 3910. Up to 455 conditions per place. [2022-07-22 21:59:39,872 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 140 selfloop transitions, 105 changer transitions 16/300 dead transitions. [2022-07-22 21:59:39,872 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 300 transitions, 3193 flow [2022-07-22 21:59:39,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-22 21:59:39,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-22 21:59:39,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1853 transitions. [2022-07-22 21:59:39,873 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5632218844984802 [2022-07-22 21:59:39,874 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1853 transitions. [2022-07-22 21:59:39,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1853 transitions. [2022-07-22 21:59:39,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:39,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1853 transitions. [2022-07-22 21:59:39,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.94285714285714) internal successors, (1853), 35 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:39,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:39,877 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:39,877 INFO L186 Difference]: Start difference. First operand has 307 places, 260 transitions, 2363 flow. Second operand 35 states and 1853 transitions. [2022-07-22 21:59:39,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 300 transitions, 3193 flow [2022-07-22 21:59:39,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 300 transitions, 2957 flow, removed 33 selfloop flow, removed 27 redundant places. [2022-07-22 21:59:39,898 INFO L242 Difference]: Finished difference. Result has 316 places, 262 transitions, 2439 flow [2022-07-22 21:59:39,899 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2144, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2439, PETRI_PLACES=316, PETRI_TRANSITIONS=262} [2022-07-22 21:59:39,899 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 228 predicate places. [2022-07-22 21:59:39,899 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 262 transitions, 2439 flow [2022-07-22 21:59:39,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:39,900 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:39,900 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:59:39,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-22 21:59:39,900 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:39,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:39,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1987884648, now seen corresponding path program 34 times [2022-07-22 21:59:39,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:39,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302557857] [2022-07-22 21:59:39,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:39,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:40,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:40,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:40,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302557857] [2022-07-22 21:59:40,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302557857] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:40,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:40,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 21:59:40,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272679846] [2022-07-22 21:59:40,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:40,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 21:59:40,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:40,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 21:59:40,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 21:59:40,191 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:40,192 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 262 transitions, 2439 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:40,192 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:40,192 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:40,192 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:43,498 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 21:59:43,792 INFO L129 PetriNetUnfolder]: 255/718 cut-off events. [2022-07-22 21:59:43,792 INFO L130 PetriNetUnfolder]: For 4331/4331 co-relation queries the response was YES. [2022-07-22 21:59:43,797 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4053 conditions, 718 events. 255/718 cut-off events. For 4331/4331 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3441 event pairs, 16 based on Foata normal form. 1/717 useless extension candidates. Maximal degree in co-relation 3960. Up to 481 conditions per place. [2022-07-22 21:59:43,799 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 160 selfloop transitions, 80 changer transitions 15/294 dead transitions. [2022-07-22 21:59:43,799 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 294 transitions, 3181 flow [2022-07-22 21:59:43,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-22 21:59:43,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-22 21:59:43,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1690 transitions. [2022-07-22 21:59:43,800 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5618351063829787 [2022-07-22 21:59:43,800 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1690 transitions. [2022-07-22 21:59:43,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1690 transitions. [2022-07-22 21:59:43,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:43,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1690 transitions. [2022-07-22 21:59:43,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.8125) internal successors, (1690), 32 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:43,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:43,811 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:43,811 INFO L186 Difference]: Start difference. First operand has 316 places, 262 transitions, 2439 flow. Second operand 32 states and 1690 transitions. [2022-07-22 21:59:43,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 294 transitions, 3181 flow [2022-07-22 21:59:43,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 294 transitions, 2914 flow, removed 26 selfloop flow, removed 30 redundant places. [2022-07-22 21:59:43,835 INFO L242 Difference]: Finished difference. Result has 319 places, 261 transitions, 2351 flow [2022-07-22 21:59:43,835 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2180, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2351, PETRI_PLACES=319, PETRI_TRANSITIONS=261} [2022-07-22 21:59:43,835 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 231 predicate places. [2022-07-22 21:59:43,835 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 261 transitions, 2351 flow [2022-07-22 21:59:43,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:43,835 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:43,836 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] [2022-07-22 21:59:43,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-22 21:59:43,836 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:43,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:43,836 INFO L85 PathProgramCache]: Analyzing trace with hash 536324172, now seen corresponding path program 35 times [2022-07-22 21:59:43,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:43,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175819554] [2022-07-22 21:59:43,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:43,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:44,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:44,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:44,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175819554] [2022-07-22 21:59:44,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175819554] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:44,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:44,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:59:44,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18328279] [2022-07-22 21:59:44,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:44,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:59:44,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:44,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:59:44,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:59:44,168 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:44,168 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 261 transitions, 2351 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:44,168 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:44,168 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:44,168 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:45,047 INFO L129 PetriNetUnfolder]: 250/700 cut-off events. [2022-07-22 21:59:45,048 INFO L130 PetriNetUnfolder]: For 4289/4289 co-relation queries the response was YES. [2022-07-22 21:59:45,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3946 conditions, 700 events. 250/700 cut-off events. For 4289/4289 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3314 event pairs, 16 based on Foata normal form. 1/699 useless extension candidates. Maximal degree in co-relation 3849. Up to 453 conditions per place. [2022-07-22 21:59:45,055 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 146 selfloop transitions, 87 changer transitions 18/290 dead transitions. [2022-07-22 21:59:45,055 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 290 transitions, 3035 flow [2022-07-22 21:59:45,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 21:59:45,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-22 21:59:45,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1647 transitions. [2022-07-22 21:59:45,056 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5652024708304736 [2022-07-22 21:59:45,056 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1647 transitions. [2022-07-22 21:59:45,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1647 transitions. [2022-07-22 21:59:45,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:45,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1647 transitions. [2022-07-22 21:59:45,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.12903225806452) internal successors, (1647), 31 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:45,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:45,060 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:45,060 INFO L186 Difference]: Start difference. First operand has 319 places, 261 transitions, 2351 flow. Second operand 31 states and 1647 transitions. [2022-07-22 21:59:45,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 290 transitions, 3035 flow [2022-07-22 21:59:45,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 290 transitions, 2842 flow, removed 16 selfloop flow, removed 31 redundant places. [2022-07-22 21:59:45,084 INFO L242 Difference]: Finished difference. Result has 317 places, 251 transitions, 2270 flow [2022-07-22 21:59:45,085 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2168, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2270, PETRI_PLACES=317, PETRI_TRANSITIONS=251} [2022-07-22 21:59:45,085 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 229 predicate places. [2022-07-22 21:59:45,085 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 251 transitions, 2270 flow [2022-07-22 21:59:45,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:45,085 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:45,086 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] [2022-07-22 21:59:45,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-22 21:59:45,086 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:45,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:45,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1431551966, now seen corresponding path program 36 times [2022-07-22 21:59:45,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:45,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775127821] [2022-07-22 21:59:45,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:45,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:45,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:45,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:45,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775127821] [2022-07-22 21:59:45,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775127821] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:45,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:45,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 21:59:45,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796327134] [2022-07-22 21:59:45,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:45,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 21:59:45,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:45,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 21:59:45,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 21:59:45,382 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:45,383 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 251 transitions, 2270 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:45,383 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:45,383 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:45,383 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:46,315 INFO L129 PetriNetUnfolder]: 245/691 cut-off events. [2022-07-22 21:59:46,316 INFO L130 PetriNetUnfolder]: For 4077/4077 co-relation queries the response was YES. [2022-07-22 21:59:46,319 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3868 conditions, 691 events. 245/691 cut-off events. For 4077/4077 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3266 event pairs, 16 based on Foata normal form. 1/689 useless extension candidates. Maximal degree in co-relation 3773. Up to 445 conditions per place. [2022-07-22 21:59:46,321 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 139 selfloop transitions, 84 changer transitions 18/280 dead transitions. [2022-07-22 21:59:46,321 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 280 transitions, 2932 flow [2022-07-22 21:59:46,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-22 21:59:46,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-22 21:59:46,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1696 transitions. [2022-07-22 21:59:46,322 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2022-07-22 21:59:46,322 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1696 transitions. [2022-07-22 21:59:46,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1696 transitions. [2022-07-22 21:59:46,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:46,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1696 transitions. [2022-07-22 21:59:46,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.0) internal successors, (1696), 32 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:46,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:46,326 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:46,326 INFO L186 Difference]: Start difference. First operand has 317 places, 251 transitions, 2270 flow. Second operand 32 states and 1696 transitions. [2022-07-22 21:59:46,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 280 transitions, 2932 flow [2022-07-22 21:59:46,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 280 transitions, 2676 flow, removed 19 selfloop flow, removed 32 redundant places. [2022-07-22 21:59:46,348 INFO L242 Difference]: Finished difference. Result has 308 places, 241 transitions, 2125 flow [2022-07-22 21:59:46,348 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2022, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2125, PETRI_PLACES=308, PETRI_TRANSITIONS=241} [2022-07-22 21:59:46,348 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 220 predicate places. [2022-07-22 21:59:46,349 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 241 transitions, 2125 flow [2022-07-22 21:59:46,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:46,349 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:46,351 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] [2022-07-22 21:59:46,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-22 21:59:46,351 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:46,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:46,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1536235202, now seen corresponding path program 37 times [2022-07-22 21:59:46,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:46,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226754584] [2022-07-22 21:59:46,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:46,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:46,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:46,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:46,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226754584] [2022-07-22 21:59:46,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226754584] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:46,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:46,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:59:46,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172776495] [2022-07-22 21:59:46,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:46,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:59:46,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:46,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:59:46,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:59:46,605 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:46,605 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 241 transitions, 2125 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:46,605 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:46,605 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:46,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:47,413 INFO L129 PetriNetUnfolder]: 242/673 cut-off events. [2022-07-22 21:59:47,413 INFO L130 PetriNetUnfolder]: For 3941/3941 co-relation queries the response was YES. [2022-07-22 21:59:47,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3752 conditions, 673 events. 242/673 cut-off events. For 3941/3941 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3138 event pairs, 18 based on Foata normal form. 1/671 useless extension candidates. Maximal degree in co-relation 3659. Up to 438 conditions per place. [2022-07-22 21:59:47,419 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 128 selfloop transitions, 80 changer transitions 24/271 dead transitions. [2022-07-22 21:59:47,419 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 271 transitions, 2764 flow [2022-07-22 21:59:47,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-22 21:59:47,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-22 21:59:47,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1594 transitions. [2022-07-22 21:59:47,420 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5652482269503546 [2022-07-22 21:59:47,420 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1594 transitions. [2022-07-22 21:59:47,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1594 transitions. [2022-07-22 21:59:47,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:47,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1594 transitions. [2022-07-22 21:59:47,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.13333333333333) internal successors, (1594), 30 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:47,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:47,423 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:47,423 INFO L186 Difference]: Start difference. First operand has 308 places, 241 transitions, 2125 flow. Second operand 30 states and 1594 transitions. [2022-07-22 21:59:47,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 271 transitions, 2764 flow [2022-07-22 21:59:47,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 271 transitions, 2511 flow, removed 13 selfloop flow, removed 33 redundant places. [2022-07-22 21:59:47,443 INFO L242 Difference]: Finished difference. Result has 293 places, 230 transitions, 1976 flow [2022-07-22 21:59:47,444 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1878, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1976, PETRI_PLACES=293, PETRI_TRANSITIONS=230} [2022-07-22 21:59:47,444 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 205 predicate places. [2022-07-22 21:59:47,444 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 230 transitions, 1976 flow [2022-07-22 21:59:47,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:47,444 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:47,444 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] [2022-07-22 21:59:47,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-22 21:59:47,445 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:47,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:47,449 INFO L85 PathProgramCache]: Analyzing trace with hash 2048868158, now seen corresponding path program 38 times [2022-07-22 21:59:47,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:47,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965975109] [2022-07-22 21:59:47,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:47,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:47,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:47,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:47,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965975109] [2022-07-22 21:59:47,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965975109] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:47,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:47,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 21:59:47,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005074392] [2022-07-22 21:59:47,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:47,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 21:59:47,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:47,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 21:59:47,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 21:59:47,729 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:47,730 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 230 transitions, 1976 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:47,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:47,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:47,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:48,917 INFO L129 PetriNetUnfolder]: 234/647 cut-off events. [2022-07-22 21:59:48,918 INFO L130 PetriNetUnfolder]: For 3564/3564 co-relation queries the response was YES. [2022-07-22 21:59:48,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3551 conditions, 647 events. 234/647 cut-off events. For 3564/3564 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2963 event pairs, 18 based on Foata normal form. 1/645 useless extension candidates. Maximal degree in co-relation 3463. Up to 437 conditions per place. [2022-07-22 21:59:48,923 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 129 selfloop transitions, 65 changer transitions 23/256 dead transitions. [2022-07-22 21:59:48,923 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 256 transitions, 2545 flow [2022-07-22 21:59:48,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-22 21:59:48,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-22 21:59:48,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1584 transitions. [2022-07-22 21:59:48,924 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5617021276595745 [2022-07-22 21:59:48,924 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1584 transitions. [2022-07-22 21:59:48,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1584 transitions. [2022-07-22 21:59:48,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:48,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1584 transitions. [2022-07-22 21:59:48,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 52.8) internal successors, (1584), 30 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:48,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:48,927 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:48,927 INFO L186 Difference]: Start difference. First operand has 293 places, 230 transitions, 1976 flow. Second operand 30 states and 1584 transitions. [2022-07-22 21:59:48,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 256 transitions, 2545 flow [2022-07-22 21:59:48,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 256 transitions, 2252 flow, removed 16 selfloop flow, removed 39 redundant places. [2022-07-22 21:59:48,944 INFO L242 Difference]: Finished difference. Result has 276 places, 218 transitions, 1728 flow [2022-07-22 21:59:48,945 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1691, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1728, PETRI_PLACES=276, PETRI_TRANSITIONS=218} [2022-07-22 21:59:48,945 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 188 predicate places. [2022-07-22 21:59:48,945 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 218 transitions, 1728 flow [2022-07-22 21:59:48,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:48,945 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:48,945 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] [2022-07-22 21:59:48,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-22 21:59:48,945 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:48,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:48,946 INFO L85 PathProgramCache]: Analyzing trace with hash 249919834, now seen corresponding path program 39 times [2022-07-22 21:59:48,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:48,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571016154] [2022-07-22 21:59:48,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:48,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:49,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:49,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:49,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571016154] [2022-07-22 21:59:49,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571016154] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:49,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:49,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-22 21:59:49,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438093752] [2022-07-22 21:59:49,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:49,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 21:59:49,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:49,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 21:59:49,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-07-22 21:59:49,252 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:49,252 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 218 transitions, 1728 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:49,252 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:49,252 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:49,253 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:50,248 INFO L129 PetriNetUnfolder]: 232/628 cut-off events. [2022-07-22 21:59:50,248 INFO L130 PetriNetUnfolder]: For 2956/2956 co-relation queries the response was YES. [2022-07-22 21:59:50,252 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3323 conditions, 628 events. 232/628 cut-off events. For 2956/2956 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2821 event pairs, 17 based on Foata normal form. 1/627 useless extension candidates. Maximal degree in co-relation 3243. Up to 429 conditions per place. [2022-07-22 21:59:50,254 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 119 selfloop transitions, 75 changer transitions 16/249 dead transitions. [2022-07-22 21:59:50,254 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 249 transitions, 2354 flow [2022-07-22 21:59:50,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-22 21:59:50,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-22 21:59:50,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1784 transitions. [2022-07-22 21:59:50,255 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.55819774718398 [2022-07-22 21:59:50,255 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1784 transitions. [2022-07-22 21:59:50,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1784 transitions. [2022-07-22 21:59:50,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:50,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1784 transitions. [2022-07-22 21:59:50,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.470588235294116) internal successors, (1784), 34 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:50,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:50,258 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:50,258 INFO L186 Difference]: Start difference. First operand has 276 places, 218 transitions, 1728 flow. Second operand 34 states and 1784 transitions. [2022-07-22 21:59:50,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 249 transitions, 2354 flow [2022-07-22 21:59:50,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 249 transitions, 2130 flow, removed 18 selfloop flow, removed 32 redundant places. [2022-07-22 21:59:50,273 INFO L242 Difference]: Finished difference. Result has 263 places, 217 transitions, 1699 flow [2022-07-22 21:59:50,274 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1699, PETRI_PLACES=263, PETRI_TRANSITIONS=217} [2022-07-22 21:59:50,274 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 175 predicate places. [2022-07-22 21:59:50,274 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 217 transitions, 1699 flow [2022-07-22 21:59:50,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:50,274 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:50,274 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] [2022-07-22 21:59:50,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-22 21:59:50,275 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:50,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:50,275 INFO L85 PathProgramCache]: Analyzing trace with hash -867374622, now seen corresponding path program 40 times [2022-07-22 21:59:50,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:50,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213603578] [2022-07-22 21:59:50,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:50,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:50,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:50,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:50,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213603578] [2022-07-22 21:59:50,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213603578] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:50,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:50,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-22 21:59:50,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539366977] [2022-07-22 21:59:50,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:50,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 21:59:50,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:50,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 21:59:50,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-07-22 21:59:50,604 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:50,604 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 217 transitions, 1699 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:50,604 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:50,604 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:50,604 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:51,529 INFO L129 PetriNetUnfolder]: 227/614 cut-off events. [2022-07-22 21:59:51,529 INFO L130 PetriNetUnfolder]: For 3024/3024 co-relation queries the response was YES. [2022-07-22 21:59:51,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3237 conditions, 614 events. 227/614 cut-off events. For 3024/3024 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2743 event pairs, 19 based on Foata normal form. 1/612 useless extension candidates. Maximal degree in co-relation 3162. Up to 424 conditions per place. [2022-07-22 21:59:51,534 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 112 selfloop transitions, 55 changer transitions 33/239 dead transitions. [2022-07-22 21:59:51,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 239 transitions, 2216 flow [2022-07-22 21:59:51,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 21:59:51,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-22 21:59:51,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1628 transitions. [2022-07-22 21:59:51,536 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5586822237474263 [2022-07-22 21:59:51,536 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1628 transitions. [2022-07-22 21:59:51,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1628 transitions. [2022-07-22 21:59:51,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:51,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1628 transitions. [2022-07-22 21:59:51,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 52.516129032258064) internal successors, (1628), 31 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:51,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:51,539 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:51,539 INFO L186 Difference]: Start difference. First operand has 263 places, 217 transitions, 1699 flow. Second operand 31 states and 1628 transitions. [2022-07-22 21:59:51,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 239 transitions, 2216 flow [2022-07-22 21:59:51,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 239 transitions, 2013 flow, removed 24 selfloop flow, removed 30 redundant places. [2022-07-22 21:59:51,554 INFO L242 Difference]: Finished difference. Result has 260 places, 196 transitions, 1502 flow [2022-07-22 21:59:51,554 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1502, PETRI_PLACES=260, PETRI_TRANSITIONS=196} [2022-07-22 21:59:51,554 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 172 predicate places. [2022-07-22 21:59:51,554 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 196 transitions, 1502 flow [2022-07-22 21:59:51,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:51,555 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:51,555 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] [2022-07-22 21:59:51,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-22 21:59:51,555 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:51,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:51,555 INFO L85 PathProgramCache]: Analyzing trace with hash -108080956, now seen corresponding path program 41 times [2022-07-22 21:59:51,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:51,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479160779] [2022-07-22 21:59:51,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:51,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:51,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:51,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:51,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479160779] [2022-07-22 21:59:51,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479160779] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:51,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:51,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 21:59:51,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060894699] [2022-07-22 21:59:51,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:51,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 21:59:51,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:51,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 21:59:51,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 21:59:51,859 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:51,860 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 196 transitions, 1502 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:51,860 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:51,860 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:51,860 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:52,919 INFO L129 PetriNetUnfolder]: 260/724 cut-off events. [2022-07-22 21:59:52,920 INFO L130 PetriNetUnfolder]: For 4090/4090 co-relation queries the response was YES. [2022-07-22 21:59:52,924 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3748 conditions, 724 events. 260/724 cut-off events. For 4090/4090 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3565 event pairs, 44 based on Foata normal form. 1/723 useless extension candidates. Maximal degree in co-relation 3673. Up to 435 conditions per place. [2022-07-22 21:59:52,926 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 115 selfloop transitions, 81 changer transitions 45/280 dead transitions. [2022-07-22 21:59:52,926 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 280 transitions, 2851 flow [2022-07-22 21:59:52,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-22 21:59:52,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-22 21:59:52,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1965 transitions. [2022-07-22 21:59:52,927 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5649798734905118 [2022-07-22 21:59:52,927 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1965 transitions. [2022-07-22 21:59:52,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1965 transitions. [2022-07-22 21:59:52,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:52,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1965 transitions. [2022-07-22 21:59:52,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 53.108108108108105) internal successors, (1965), 37 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:52,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:52,931 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:52,931 INFO L186 Difference]: Start difference. First operand has 260 places, 196 transitions, 1502 flow. Second operand 37 states and 1965 transitions. [2022-07-22 21:59:52,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 280 transitions, 2851 flow [2022-07-22 21:59:52,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 280 transitions, 2503 flow, removed 53 selfloop flow, removed 29 redundant places. [2022-07-22 21:59:52,945 INFO L242 Difference]: Finished difference. Result has 257 places, 221 transitions, 1845 flow [2022-07-22 21:59:52,945 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1845, PETRI_PLACES=257, PETRI_TRANSITIONS=221} [2022-07-22 21:59:52,945 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 169 predicate places. [2022-07-22 21:59:52,945 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 221 transitions, 1845 flow [2022-07-22 21:59:52,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:52,946 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:52,946 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] [2022-07-22 21:59:52,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-22 21:59:52,946 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:52,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:52,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1170288916, now seen corresponding path program 42 times [2022-07-22 21:59:52,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:52,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989646921] [2022-07-22 21:59:52,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:52,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:53,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:53,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:53,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989646921] [2022-07-22 21:59:53,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989646921] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:53,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:53,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:59:53,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260347906] [2022-07-22 21:59:53,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:53,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:59:53,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:53,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:59:53,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:59:53,225 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:53,226 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 221 transitions, 1845 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:53,226 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:53,226 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:53,226 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:54,258 INFO L129 PetriNetUnfolder]: 258/722 cut-off events. [2022-07-22 21:59:54,258 INFO L130 PetriNetUnfolder]: For 4668/4668 co-relation queries the response was YES. [2022-07-22 21:59:54,263 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3895 conditions, 722 events. 258/722 cut-off events. For 4668/4668 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3516 event pairs, 53 based on Foata normal form. 1/721 useless extension candidates. Maximal degree in co-relation 3812. Up to 442 conditions per place. [2022-07-22 21:59:54,265 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 120 selfloop transitions, 83 changer transitions 36/278 dead transitions. [2022-07-22 21:59:54,265 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 278 transitions, 2894 flow [2022-07-22 21:59:54,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-22 21:59:54,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-22 21:59:54,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1811 transitions. [2022-07-22 21:59:54,267 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5666458072590739 [2022-07-22 21:59:54,267 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1811 transitions. [2022-07-22 21:59:54,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1811 transitions. [2022-07-22 21:59:54,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:54,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1811 transitions. [2022-07-22 21:59:54,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.26470588235294) internal successors, (1811), 34 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:54,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:54,271 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:54,271 INFO L186 Difference]: Start difference. First operand has 257 places, 221 transitions, 1845 flow. Second operand 34 states and 1811 transitions. [2022-07-22 21:59:54,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 278 transitions, 2894 flow [2022-07-22 21:59:54,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 278 transitions, 2530 flow, removed 146 selfloop flow, removed 21 redundant places. [2022-07-22 21:59:54,308 INFO L242 Difference]: Finished difference. Result has 272 places, 228 transitions, 1896 flow [2022-07-22 21:59:54,308 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1896, PETRI_PLACES=272, PETRI_TRANSITIONS=228} [2022-07-22 21:59:54,309 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 184 predicate places. [2022-07-22 21:59:54,309 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 228 transitions, 1896 flow [2022-07-22 21:59:54,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:54,309 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:54,309 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] [2022-07-22 21:59:54,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-22 21:59:54,309 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:54,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:54,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1501875706, now seen corresponding path program 43 times [2022-07-22 21:59:54,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:54,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285775018] [2022-07-22 21:59:54,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:54,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:54,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:54,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:54,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285775018] [2022-07-22 21:59:54,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285775018] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:54,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:54,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:59:54,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105158618] [2022-07-22 21:59:54,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:54,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:59:54,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:54,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:59:54,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:59:54,606 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:54,607 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 228 transitions, 1896 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:54,607 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:54,607 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:54,607 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:55,703 INFO L129 PetriNetUnfolder]: 283/788 cut-off events. [2022-07-22 21:59:55,703 INFO L130 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2022-07-22 21:59:55,707 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4396 conditions, 788 events. 283/788 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3938 event pairs, 29 based on Foata normal form. 1/787 useless extension candidates. Maximal degree in co-relation 4311. Up to 494 conditions per place. [2022-07-22 21:59:55,709 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 153 selfloop transitions, 97 changer transitions 22/311 dead transitions. [2022-07-22 21:59:55,709 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 311 transitions, 3442 flow [2022-07-22 21:59:55,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-22 21:59:55,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-07-22 21:59:55,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2071 transitions. [2022-07-22 21:59:55,711 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5649208947081288 [2022-07-22 21:59:55,711 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2071 transitions. [2022-07-22 21:59:55,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2071 transitions. [2022-07-22 21:59:55,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:55,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2071 transitions. [2022-07-22 21:59:55,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 53.1025641025641) internal successors, (2071), 39 states have internal predecessors, (2071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:55,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:55,714 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:55,714 INFO L186 Difference]: Start difference. First operand has 272 places, 228 transitions, 1896 flow. Second operand 39 states and 2071 transitions. [2022-07-22 21:59:55,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 311 transitions, 3442 flow [2022-07-22 21:59:55,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 311 transitions, 3138 flow, removed 86 selfloop flow, removed 30 redundant places. [2022-07-22 21:59:55,735 INFO L242 Difference]: Finished difference. Result has 284 places, 265 transitions, 2479 flow [2022-07-22 21:59:55,736 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1678, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=2479, PETRI_PLACES=284, PETRI_TRANSITIONS=265} [2022-07-22 21:59:55,736 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 196 predicate places. [2022-07-22 21:59:55,736 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 265 transitions, 2479 flow [2022-07-22 21:59:55,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:55,736 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:55,737 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] [2022-07-22 21:59:55,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-22 21:59:55,737 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:55,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:55,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1942248590, now seen corresponding path program 44 times [2022-07-22 21:59:55,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:55,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068237718] [2022-07-22 21:59:55,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:55,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:56,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:56,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:56,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068237718] [2022-07-22 21:59:56,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068237718] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:56,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:56,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 21:59:56,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600392825] [2022-07-22 21:59:56,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:56,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 21:59:56,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:56,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 21:59:56,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 21:59:56,027 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:56,027 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 265 transitions, 2479 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:56,027 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:56,027 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:56,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:57,170 INFO L129 PetriNetUnfolder]: 299/809 cut-off events. [2022-07-22 21:59:57,170 INFO L130 PetriNetUnfolder]: For 7604/7604 co-relation queries the response was YES. [2022-07-22 21:59:57,175 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4911 conditions, 809 events. 299/809 cut-off events. For 7604/7604 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 4145 event pairs, 34 based on Foata normal form. 1/807 useless extension candidates. Maximal degree in co-relation 4824. Up to 538 conditions per place. [2022-07-22 21:59:57,177 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 159 selfloop transitions, 96 changer transitions 38/332 dead transitions. [2022-07-22 21:59:57,177 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 332 transitions, 3792 flow [2022-07-22 21:59:57,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-22 21:59:57,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-07-22 21:59:57,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2115 transitions. [2022-07-22 21:59:57,179 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5625 [2022-07-22 21:59:57,179 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2115 transitions. [2022-07-22 21:59:57,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2115 transitions. [2022-07-22 21:59:57,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:57,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2115 transitions. [2022-07-22 21:59:57,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 52.875) internal successors, (2115), 40 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:57,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:57,182 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:57,182 INFO L186 Difference]: Start difference. First operand has 284 places, 265 transitions, 2479 flow. Second operand 40 states and 2115 transitions. [2022-07-22 21:59:57,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 332 transitions, 3792 flow [2022-07-22 21:59:57,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 332 transitions, 3302 flow, removed 208 selfloop flow, removed 17 redundant places. [2022-07-22 21:59:57,211 INFO L242 Difference]: Finished difference. Result has 314 places, 281 transitions, 2537 flow [2022-07-22 21:59:57,211 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2025, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=2537, PETRI_PLACES=314, PETRI_TRANSITIONS=281} [2022-07-22 21:59:57,212 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 226 predicate places. [2022-07-22 21:59:57,212 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 281 transitions, 2537 flow [2022-07-22 21:59:57,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:57,212 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:57,212 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] [2022-07-22 21:59:57,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-22 21:59:57,212 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:57,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:57,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1864024636, now seen corresponding path program 45 times [2022-07-22 21:59:57,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:57,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403596781] [2022-07-22 21:59:57,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:57,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:57,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:57,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:57,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403596781] [2022-07-22 21:59:57,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403596781] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:57,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:57,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 21:59:57,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589434093] [2022-07-22 21:59:57,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:57,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 21:59:57,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:57,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 21:59:57,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 21:59:57,511 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:57,512 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 281 transitions, 2537 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:57,512 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:57,512 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:57,512 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:58,619 INFO L129 PetriNetUnfolder]: 294/832 cut-off events. [2022-07-22 21:59:58,619 INFO L130 PetriNetUnfolder]: For 7861/7861 co-relation queries the response was YES. [2022-07-22 21:59:58,625 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4975 conditions, 832 events. 294/832 cut-off events. For 7861/7861 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 4320 event pairs, 35 based on Foata normal form. 1/831 useless extension candidates. Maximal degree in co-relation 4876. Up to 525 conditions per place. [2022-07-22 21:59:58,641 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 158 selfloop transitions, 89 changer transitions 39/325 dead transitions. [2022-07-22 21:59:58,641 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 325 transitions, 3513 flow [2022-07-22 21:59:58,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-22 21:59:58,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-22 21:59:58,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1961 transitions. [2022-07-22 21:59:58,643 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2022-07-22 21:59:58,643 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1961 transitions. [2022-07-22 21:59:58,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1961 transitions. [2022-07-22 21:59:58,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:58,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1961 transitions. [2022-07-22 21:59:58,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 53.0) internal successors, (1961), 37 states have internal predecessors, (1961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:58,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:58,646 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:58,646 INFO L186 Difference]: Start difference. First operand has 314 places, 281 transitions, 2537 flow. Second operand 37 states and 1961 transitions. [2022-07-22 21:59:58,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 325 transitions, 3513 flow [2022-07-22 21:59:58,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 325 transitions, 3139 flow, removed 131 selfloop flow, removed 31 redundant places. [2022-07-22 21:59:58,677 INFO L242 Difference]: Finished difference. Result has 322 places, 274 transitions, 2410 flow [2022-07-22 21:59:58,678 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2213, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2410, PETRI_PLACES=322, PETRI_TRANSITIONS=274} [2022-07-22 21:59:58,678 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 234 predicate places. [2022-07-22 21:59:58,678 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 274 transitions, 2410 flow [2022-07-22 21:59:58,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:58,678 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:58,678 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] [2022-07-22 21:59:58,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-22 21:59:58,679 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:58,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:58,679 INFO L85 PathProgramCache]: Analyzing trace with hash -550326550, now seen corresponding path program 46 times [2022-07-22 21:59:58,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:58,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025601771] [2022-07-22 21:59:58,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:58,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:58,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:58,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:58,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025601771] [2022-07-22 21:59:58,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025601771] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:58,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:58,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:59:58,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531497177] [2022-07-22 21:59:58,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:58,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:59:58,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:58,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:59:58,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:59:58,949 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 21:59:58,950 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 274 transitions, 2410 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:58,950 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:58,950 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 21:59:58,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:59,949 INFO L129 PetriNetUnfolder]: 301/873 cut-off events. [2022-07-22 21:59:59,949 INFO L130 PetriNetUnfolder]: For 7861/7861 co-relation queries the response was YES. [2022-07-22 21:59:59,954 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5163 conditions, 873 events. 301/873 cut-off events. For 7861/7861 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4709 event pairs, 55 based on Foata normal form. 1/872 useless extension candidates. Maximal degree in co-relation 5063. Up to 529 conditions per place. [2022-07-22 21:59:59,957 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 169 selfloop transitions, 94 changer transitions 40/342 dead transitions. [2022-07-22 21:59:59,957 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 342 transitions, 3736 flow [2022-07-22 21:59:59,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 21:59:59,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-22 21:59:59,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1659 transitions. [2022-07-22 21:59:59,958 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5693205216197667 [2022-07-22 21:59:59,958 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1659 transitions. [2022-07-22 21:59:59,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1659 transitions. [2022-07-22 21:59:59,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:59,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1659 transitions. [2022-07-22 21:59:59,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.516129032258064) internal successors, (1659), 31 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:59,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:59,961 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:59,961 INFO L186 Difference]: Start difference. First operand has 322 places, 274 transitions, 2410 flow. Second operand 31 states and 1659 transitions. [2022-07-22 21:59:59,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 342 transitions, 3736 flow [2022-07-22 21:59:59,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 342 transitions, 3399 flow, removed 41 selfloop flow, removed 42 redundant places. [2022-07-22 21:59:59,993 INFO L242 Difference]: Finished difference. Result has 313 places, 285 transitions, 2617 flow [2022-07-22 21:59:59,994 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2160, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2617, PETRI_PLACES=313, PETRI_TRANSITIONS=285} [2022-07-22 21:59:59,994 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 225 predicate places. [2022-07-22 21:59:59,994 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 285 transitions, 2617 flow [2022-07-22 21:59:59,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:59,994 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:59,994 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] [2022-07-22 21:59:59,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-22 21:59:59,994 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:59,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:59,995 INFO L85 PathProgramCache]: Analyzing trace with hash 345730114, now seen corresponding path program 47 times [2022-07-22 21:59:59,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:59,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322335830] [2022-07-22 21:59:59,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:59,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:00,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:00,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:00,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322335830] [2022-07-22 22:00:00,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322335830] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:00,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:00,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 22:00:00,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15571248] [2022-07-22 22:00:00,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:00,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 22:00:00,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:00,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 22:00:00,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:00:00,294 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:00,295 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 285 transitions, 2617 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:00,295 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:00,295 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:00,295 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:01,398 INFO L129 PetriNetUnfolder]: 314/913 cut-off events. [2022-07-22 22:00:01,398 INFO L130 PetriNetUnfolder]: For 9539/9539 co-relation queries the response was YES. [2022-07-22 22:00:01,404 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5553 conditions, 913 events. 314/913 cut-off events. For 9539/9539 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4895 event pairs, 56 based on Foata normal form. 1/912 useless extension candidates. Maximal degree in co-relation 5453. Up to 563 conditions per place. [2022-07-22 22:00:01,407 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 189 selfloop transitions, 108 changer transitions 24/360 dead transitions. [2022-07-22 22:00:01,407 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 360 transitions, 4296 flow [2022-07-22 22:00:01,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-22 22:00:01,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-22 22:00:01,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1970 transitions. [2022-07-22 22:00:01,414 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5664174813110984 [2022-07-22 22:00:01,414 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1970 transitions. [2022-07-22 22:00:01,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1970 transitions. [2022-07-22 22:00:01,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:01,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1970 transitions. [2022-07-22 22:00:01,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 53.24324324324324) internal successors, (1970), 37 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:01,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:01,418 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:01,418 INFO L186 Difference]: Start difference. First operand has 313 places, 285 transitions, 2617 flow. Second operand 37 states and 1970 transitions. [2022-07-22 22:00:01,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 360 transitions, 4296 flow [2022-07-22 22:00:01,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 360 transitions, 4056 flow, removed 72 selfloop flow, removed 26 redundant places. [2022-07-22 22:00:01,456 INFO L242 Difference]: Finished difference. Result has 322 places, 312 transitions, 3211 flow [2022-07-22 22:00:01,456 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2446, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=3211, PETRI_PLACES=322, PETRI_TRANSITIONS=312} [2022-07-22 22:00:01,456 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 234 predicate places. [2022-07-22 22:00:01,457 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 312 transitions, 3211 flow [2022-07-22 22:00:01,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:01,457 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:01,457 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] [2022-07-22 22:00:01,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-22 22:00:01,457 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:01,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:01,457 INFO L85 PathProgramCache]: Analyzing trace with hash 2033047628, now seen corresponding path program 48 times [2022-07-22 22:00:01,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:01,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971524301] [2022-07-22 22:00:01,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:01,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:01,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:01,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:01,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971524301] [2022-07-22 22:00:01,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971524301] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:01,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:01,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-22 22:00:01,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509041545] [2022-07-22 22:00:01,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:01,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 22:00:01,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:01,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 22:00:01,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-07-22 22:00:01,700 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:01,700 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 312 transitions, 3211 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:01,700 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:01,700 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:01,700 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:02,680 INFO L129 PetriNetUnfolder]: 322/921 cut-off events. [2022-07-22 22:00:02,680 INFO L130 PetriNetUnfolder]: For 10764/10764 co-relation queries the response was YES. [2022-07-22 22:00:02,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5930 conditions, 921 events. 322/921 cut-off events. For 10764/10764 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4974 event pairs, 51 based on Foata normal form. 1/920 useless extension candidates. Maximal degree in co-relation 5829. Up to 589 conditions per place. [2022-07-22 22:00:02,688 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 202 selfloop transitions, 96 changer transitions 30/367 dead transitions. [2022-07-22 22:00:02,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 367 transitions, 4561 flow [2022-07-22 22:00:02,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-22 22:00:02,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-22 22:00:02,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1712 transitions. [2022-07-22 22:00:02,691 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5691489361702128 [2022-07-22 22:00:02,691 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1712 transitions. [2022-07-22 22:00:02,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1712 transitions. [2022-07-22 22:00:02,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:02,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1712 transitions. [2022-07-22 22:00:02,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.5) internal successors, (1712), 32 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:02,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:02,695 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:02,695 INFO L186 Difference]: Start difference. First operand has 322 places, 312 transitions, 3211 flow. Second operand 32 states and 1712 transitions. [2022-07-22 22:00:02,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 367 transitions, 4561 flow [2022-07-22 22:00:02,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 367 transitions, 4046 flow, removed 212 selfloop flow, removed 18 redundant places. [2022-07-22 22:00:02,737 INFO L242 Difference]: Finished difference. Result has 339 places, 320 transitions, 3164 flow [2022-07-22 22:00:02,738 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2770, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=3164, PETRI_PLACES=339, PETRI_TRANSITIONS=320} [2022-07-22 22:00:02,738 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 251 predicate places. [2022-07-22 22:00:02,738 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 320 transitions, 3164 flow [2022-07-22 22:00:02,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:02,738 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:02,738 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] [2022-07-22 22:00:02,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-22 22:00:02,739 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:02,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:02,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1568072524, now seen corresponding path program 49 times [2022-07-22 22:00:02,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:02,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971197191] [2022-07-22 22:00:02,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:02,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:03,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:03,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:03,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971197191] [2022-07-22 22:00:03,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971197191] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:03,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:03,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-22 22:00:03,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400830022] [2022-07-22 22:00:03,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:03,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 22:00:03,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:03,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 22:00:03,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-07-22 22:00:03,004 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:03,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 320 transitions, 3164 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:03,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:03,005 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:03,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:03,978 INFO L129 PetriNetUnfolder]: 325/934 cut-off events. [2022-07-22 22:00:03,978 INFO L130 PetriNetUnfolder]: For 10940/10940 co-relation queries the response was YES. [2022-07-22 22:00:03,984 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5970 conditions, 934 events. 325/934 cut-off events. For 10940/10940 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5113 event pairs, 55 based on Foata normal form. 1/933 useless extension candidates. Maximal degree in co-relation 5861. Up to 614 conditions per place. [2022-07-22 22:00:03,987 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 219 selfloop transitions, 86 changer transitions 30/374 dead transitions. [2022-07-22 22:00:03,987 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 374 transitions, 4489 flow [2022-07-22 22:00:03,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-22 22:00:03,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-22 22:00:03,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1814 transitions. [2022-07-22 22:00:03,988 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.567584480600751 [2022-07-22 22:00:03,988 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1814 transitions. [2022-07-22 22:00:03,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1814 transitions. [2022-07-22 22:00:03,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:03,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1814 transitions. [2022-07-22 22:00:03,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.35294117647059) internal successors, (1814), 34 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:03,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:03,991 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:03,991 INFO L186 Difference]: Start difference. First operand has 339 places, 320 transitions, 3164 flow. Second operand 34 states and 1814 transitions. [2022-07-22 22:00:03,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 374 transitions, 4489 flow [2022-07-22 22:00:04,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 374 transitions, 4155 flow, removed 91 selfloop flow, removed 29 redundant places. [2022-07-22 22:00:04,037 INFO L242 Difference]: Finished difference. Result has 346 places, 328 transitions, 3257 flow [2022-07-22 22:00:04,037 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2896, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3257, PETRI_PLACES=346, PETRI_TRANSITIONS=328} [2022-07-22 22:00:04,037 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 258 predicate places. [2022-07-22 22:00:04,037 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 328 transitions, 3257 flow [2022-07-22 22:00:04,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:04,038 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:04,038 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] [2022-07-22 22:00:04,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-22 22:00:04,038 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:04,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:04,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1812402046, now seen corresponding path program 50 times [2022-07-22 22:00:04,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:04,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818618804] [2022-07-22 22:00:04,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:04,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:04,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:04,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:04,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818618804] [2022-07-22 22:00:04,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818618804] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:04,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:04,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 22:00:04,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537965311] [2022-07-22 22:00:04,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:04,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 22:00:04,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:04,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 22:00:04,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:00:04,316 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:04,317 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 328 transitions, 3257 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:04,317 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:04,317 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:04,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:05,458 INFO L129 PetriNetUnfolder]: 333/967 cut-off events. [2022-07-22 22:00:05,458 INFO L130 PetriNetUnfolder]: For 10879/10879 co-relation queries the response was YES. [2022-07-22 22:00:05,466 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6128 conditions, 967 events. 333/967 cut-off events. For 10879/10879 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 5361 event pairs, 62 based on Foata normal form. 1/966 useless extension candidates. Maximal degree in co-relation 6019. Up to 640 conditions per place. [2022-07-22 22:00:05,469 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 228 selfloop transitions, 90 changer transitions 31/388 dead transitions. [2022-07-22 22:00:05,469 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 388 transitions, 4671 flow [2022-07-22 22:00:05,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-22 22:00:05,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-22 22:00:05,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2011 transitions. [2022-07-22 22:00:05,471 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.562989921612542 [2022-07-22 22:00:05,471 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2011 transitions. [2022-07-22 22:00:05,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2011 transitions. [2022-07-22 22:00:05,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:05,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2011 transitions. [2022-07-22 22:00:05,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.921052631578945) internal successors, (2011), 38 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:05,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:05,474 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:05,474 INFO L186 Difference]: Start difference. First operand has 346 places, 328 transitions, 3257 flow. Second operand 38 states and 2011 transitions. [2022-07-22 22:00:05,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 388 transitions, 4671 flow [2022-07-22 22:00:05,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 388 transitions, 4372 flow, removed 78 selfloop flow, removed 30 redundant places. [2022-07-22 22:00:05,519 INFO L242 Difference]: Finished difference. Result has 360 places, 343 transitions, 3469 flow [2022-07-22 22:00:05,519 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3020, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3469, PETRI_PLACES=360, PETRI_TRANSITIONS=343} [2022-07-22 22:00:05,520 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 272 predicate places. [2022-07-22 22:00:05,520 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 343 transitions, 3469 flow [2022-07-22 22:00:05,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:05,520 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:05,520 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] [2022-07-22 22:00:05,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-22 22:00:05,520 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:05,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:05,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1149402536, now seen corresponding path program 51 times [2022-07-22 22:00:05,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:05,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799239619] [2022-07-22 22:00:05,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:05,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:05,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:05,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:05,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799239619] [2022-07-22 22:00:05,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799239619] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:05,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:05,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-22 22:00:05,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180714144] [2022-07-22 22:00:05,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:05,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 22:00:05,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:05,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 22:00:05,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-07-22 22:00:05,814 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:05,814 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 343 transitions, 3469 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:05,814 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:05,814 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:05,814 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:07,540 INFO L129 PetriNetUnfolder]: 375/1041 cut-off events. [2022-07-22 22:00:07,540 INFO L130 PetriNetUnfolder]: For 13336/13336 co-relation queries the response was YES. [2022-07-22 22:00:07,547 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6944 conditions, 1041 events. 375/1041 cut-off events. For 13336/13336 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5861 event pairs, 37 based on Foata normal form. 1/1040 useless extension candidates. Maximal degree in co-relation 6830. Up to 671 conditions per place. [2022-07-22 22:00:07,550 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 252 selfloop transitions, 157 changer transitions 22/470 dead transitions. [2022-07-22 22:00:07,551 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 470 transitions, 5986 flow [2022-07-22 22:00:07,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-07-22 22:00:07,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-07-22 22:00:07,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 2728 transitions. [2022-07-22 22:00:07,552 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.55810147299509 [2022-07-22 22:00:07,552 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 2728 transitions. [2022-07-22 22:00:07,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 2728 transitions. [2022-07-22 22:00:07,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:07,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 2728 transitions. [2022-07-22 22:00:07,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 52.46153846153846) internal successors, (2728), 52 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:07,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 94.0) internal successors, (4982), 53 states have internal predecessors, (4982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:07,557 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 94.0) internal successors, (4982), 53 states have internal predecessors, (4982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:07,557 INFO L186 Difference]: Start difference. First operand has 360 places, 343 transitions, 3469 flow. Second operand 52 states and 2728 transitions. [2022-07-22 22:00:07,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 470 transitions, 5986 flow [2022-07-22 22:00:07,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 470 transitions, 5661 flow, removed 102 selfloop flow, removed 28 redundant places. [2022-07-22 22:00:07,609 INFO L242 Difference]: Finished difference. Result has 396 places, 427 transitions, 4851 flow [2022-07-22 22:00:07,610 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3219, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=4851, PETRI_PLACES=396, PETRI_TRANSITIONS=427} [2022-07-22 22:00:07,610 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 308 predicate places. [2022-07-22 22:00:07,610 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 427 transitions, 4851 flow [2022-07-22 22:00:07,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:07,611 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:07,611 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] [2022-07-22 22:00:07,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-22 22:00:07,611 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:07,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:07,611 INFO L85 PathProgramCache]: Analyzing trace with hash -804778110, now seen corresponding path program 52 times [2022-07-22 22:00:07,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:07,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920552812] [2022-07-22 22:00:07,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:07,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:07,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:07,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:07,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920552812] [2022-07-22 22:00:07,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920552812] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:07,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:07,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 22:00:07,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383742205] [2022-07-22 22:00:07,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:07,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 22:00:07,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:07,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 22:00:07,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:00:07,887 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:07,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 427 transitions, 4851 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:07,888 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:07,888 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:07,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:08,985 INFO L129 PetriNetUnfolder]: 376/1092 cut-off events. [2022-07-22 22:00:08,985 INFO L130 PetriNetUnfolder]: For 15247/15247 co-relation queries the response was YES. [2022-07-22 22:00:08,995 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7438 conditions, 1092 events. 376/1092 cut-off events. For 15247/15247 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6420 event pairs, 46 based on Foata normal form. 1/1091 useless extension candidates. Maximal degree in co-relation 7312. Up to 750 conditions per place. [2022-07-22 22:00:08,998 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 308 selfloop transitions, 83 changer transitions 36/466 dead transitions. [2022-07-22 22:00:08,999 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 466 transitions, 6077 flow [2022-07-22 22:00:09,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-22 22:00:09,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-22 22:00:09,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1857 transitions. [2022-07-22 22:00:09,008 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5644376899696049 [2022-07-22 22:00:09,008 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1857 transitions. [2022-07-22 22:00:09,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1857 transitions. [2022-07-22 22:00:09,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:09,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1857 transitions. [2022-07-22 22:00:09,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.05714285714286) internal successors, (1857), 35 states have internal predecessors, (1857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:09,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:09,011 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:09,012 INFO L186 Difference]: Start difference. First operand has 396 places, 427 transitions, 4851 flow. Second operand 35 states and 1857 transitions. [2022-07-22 22:00:09,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 466 transitions, 6077 flow [2022-07-22 22:00:09,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 466 transitions, 5291 flow, removed 339 selfloop flow, removed 22 redundant places. [2022-07-22 22:00:09,090 INFO L242 Difference]: Finished difference. Result has 413 places, 420 transitions, 4236 flow [2022-07-22 22:00:09,090 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4069, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4236, PETRI_PLACES=413, PETRI_TRANSITIONS=420} [2022-07-22 22:00:09,090 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 325 predicate places. [2022-07-22 22:00:09,090 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 420 transitions, 4236 flow [2022-07-22 22:00:09,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:09,091 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:09,091 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] [2022-07-22 22:00:09,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-07-22 22:00:09,091 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:09,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:09,091 INFO L85 PathProgramCache]: Analyzing trace with hash 2095767580, now seen corresponding path program 53 times [2022-07-22 22:00:09,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:09,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591443152] [2022-07-22 22:00:09,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:09,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:09,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:09,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:09,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591443152] [2022-07-22 22:00:09,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591443152] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:09,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:09,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 22:00:09,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631651053] [2022-07-22 22:00:09,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:09,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 22:00:09,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:09,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 22:00:09,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:00:09,376 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:09,376 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 420 transitions, 4236 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:09,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:09,376 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:09,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:10,507 INFO L129 PetriNetUnfolder]: 378/1066 cut-off events. [2022-07-22 22:00:10,507 INFO L130 PetriNetUnfolder]: For 13794/13794 co-relation queries the response was YES. [2022-07-22 22:00:10,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7208 conditions, 1066 events. 378/1066 cut-off events. For 13794/13794 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6188 event pairs, 38 based on Foata normal form. 1/1064 useless extension candidates. Maximal degree in co-relation 7076. Up to 720 conditions per place. [2022-07-22 22:00:10,517 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 289 selfloop transitions, 113 changer transitions 31/472 dead transitions. [2022-07-22 22:00:10,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 472 transitions, 5831 flow [2022-07-22 22:00:10,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-22 22:00:10,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-22 22:00:10,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1966 transitions. [2022-07-22 22:00:10,518 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5652673950546291 [2022-07-22 22:00:10,518 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1966 transitions. [2022-07-22 22:00:10,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1966 transitions. [2022-07-22 22:00:10,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:10,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1966 transitions. [2022-07-22 22:00:10,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 53.13513513513514) internal successors, (1966), 37 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:10,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:10,522 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:10,522 INFO L186 Difference]: Start difference. First operand has 413 places, 420 transitions, 4236 flow. Second operand 37 states and 1966 transitions. [2022-07-22 22:00:10,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 472 transitions, 5831 flow [2022-07-22 22:00:10,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 472 transitions, 5571 flow, removed 35 selfloop flow, removed 36 redundant places. [2022-07-22 22:00:10,590 INFO L242 Difference]: Finished difference. Result has 412 places, 429 transitions, 4516 flow [2022-07-22 22:00:10,590 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4016, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=4516, PETRI_PLACES=412, PETRI_TRANSITIONS=429} [2022-07-22 22:00:10,590 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 324 predicate places. [2022-07-22 22:00:10,590 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 429 transitions, 4516 flow [2022-07-22 22:00:10,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:10,590 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:10,590 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] [2022-07-22 22:00:10,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-07-22 22:00:10,590 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:10,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:10,591 INFO L85 PathProgramCache]: Analyzing trace with hash -62530402, now seen corresponding path program 54 times [2022-07-22 22:00:10,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:10,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315327206] [2022-07-22 22:00:10,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:10,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:10,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:10,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:10,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315327206] [2022-07-22 22:00:10,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315327206] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:10,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:10,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 22:00:10,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207275727] [2022-07-22 22:00:10,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:10,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 22:00:10,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:10,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 22:00:10,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:00:10,878 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:10,878 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 429 transitions, 4516 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:10,878 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:10,878 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:10,878 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:12,022 INFO L129 PetriNetUnfolder]: 373/1094 cut-off events. [2022-07-22 22:00:12,022 INFO L130 PetriNetUnfolder]: For 13790/13790 co-relation queries the response was YES. [2022-07-22 22:00:12,031 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7225 conditions, 1094 events. 373/1094 cut-off events. For 13790/13790 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 6446 event pairs, 48 based on Foata normal form. 1/1093 useless extension candidates. Maximal degree in co-relation 7094. Up to 714 conditions per place. [2022-07-22 22:00:12,035 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 291 selfloop transitions, 96 changer transitions 40/466 dead transitions. [2022-07-22 22:00:12,035 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 466 transitions, 5766 flow [2022-07-22 22:00:12,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-22 22:00:12,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-22 22:00:12,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1809 transitions. [2022-07-22 22:00:12,037 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5660200250312891 [2022-07-22 22:00:12,037 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1809 transitions. [2022-07-22 22:00:12,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1809 transitions. [2022-07-22 22:00:12,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:12,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1809 transitions. [2022-07-22 22:00:12,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.205882352941174) internal successors, (1809), 34 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:12,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:12,040 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:12,040 INFO L186 Difference]: Start difference. First operand has 412 places, 429 transitions, 4516 flow. Second operand 34 states and 1809 transitions. [2022-07-22 22:00:12,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 466 transitions, 5766 flow [2022-07-22 22:00:12,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 466 transitions, 5423 flow, removed 98 selfloop flow, removed 28 redundant places. [2022-07-22 22:00:12,118 INFO L242 Difference]: Finished difference. Result has 419 places, 417 transitions, 4346 flow [2022-07-22 22:00:12,119 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4211, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=4346, PETRI_PLACES=419, PETRI_TRANSITIONS=417} [2022-07-22 22:00:12,119 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 331 predicate places. [2022-07-22 22:00:12,119 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 417 transitions, 4346 flow [2022-07-22 22:00:12,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:12,119 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:12,120 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] [2022-07-22 22:00:12,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-07-22 22:00:12,120 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:12,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:12,120 INFO L85 PathProgramCache]: Analyzing trace with hash -417519632, now seen corresponding path program 55 times [2022-07-22 22:00:12,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:12,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404327200] [2022-07-22 22:00:12,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:12,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:12,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:12,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:12,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404327200] [2022-07-22 22:00:12,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404327200] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:12,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:12,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 22:00:12,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296255572] [2022-07-22 22:00:12,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:12,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 22:00:12,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:12,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 22:00:12,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:00:12,408 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:12,409 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 417 transitions, 4346 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:12,409 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:12,409 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:12,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:14,553 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 22:00:15,225 INFO L129 PetriNetUnfolder]: 387/1114 cut-off events. [2022-07-22 22:00:15,225 INFO L130 PetriNetUnfolder]: For 15802/15802 co-relation queries the response was YES. [2022-07-22 22:00:15,232 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7636 conditions, 1114 events. 387/1114 cut-off events. For 15802/15802 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 6560 event pairs, 49 based on Foata normal form. 1/1113 useless extension candidates. Maximal degree in co-relation 7504. Up to 718 conditions per place. [2022-07-22 22:00:15,235 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 289 selfloop transitions, 130 changer transitions 32/490 dead transitions. [2022-07-22 22:00:15,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 490 transitions, 6370 flow [2022-07-22 22:00:15,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-22 22:00:15,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-07-22 22:00:15,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2170 transitions. [2022-07-22 22:00:15,237 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.563051375194603 [2022-07-22 22:00:15,237 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2170 transitions. [2022-07-22 22:00:15,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2170 transitions. [2022-07-22 22:00:15,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:15,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2170 transitions. [2022-07-22 22:00:15,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 52.926829268292686) internal successors, (2170), 41 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:15,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:15,241 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:15,241 INFO L186 Difference]: Start difference. First operand has 419 places, 417 transitions, 4346 flow. Second operand 41 states and 2170 transitions. [2022-07-22 22:00:15,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 490 transitions, 6370 flow [2022-07-22 22:00:15,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 490 transitions, 6028 flow, removed 46 selfloop flow, removed 37 redundant places. [2022-07-22 22:00:15,309 INFO L242 Difference]: Finished difference. Result has 423 places, 437 transitions, 4838 flow [2022-07-22 22:00:15,309 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4071, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=4838, PETRI_PLACES=423, PETRI_TRANSITIONS=437} [2022-07-22 22:00:15,309 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 335 predicate places. [2022-07-22 22:00:15,310 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 437 transitions, 4838 flow [2022-07-22 22:00:15,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:15,310 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:15,310 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] [2022-07-22 22:00:15,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-07-22 22:00:15,310 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:15,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:15,310 INFO L85 PathProgramCache]: Analyzing trace with hash -71421206, now seen corresponding path program 56 times [2022-07-22 22:00:15,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:15,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188793130] [2022-07-22 22:00:15,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:15,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:15,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:15,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:15,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188793130] [2022-07-22 22:00:15,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188793130] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:15,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:15,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 22:00:15,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115174691] [2022-07-22 22:00:15,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:15,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 22:00:15,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:15,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 22:00:15,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:00:15,575 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:15,575 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 437 transitions, 4838 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:15,575 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:15,575 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:15,575 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:16,831 INFO L129 PetriNetUnfolder]: 389/1123 cut-off events. [2022-07-22 22:00:16,832 INFO L130 PetriNetUnfolder]: For 17049/17049 co-relation queries the response was YES. [2022-07-22 22:00:16,841 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7869 conditions, 1123 events. 389/1123 cut-off events. For 17049/17049 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6643 event pairs, 45 based on Foata normal form. 1/1121 useless extension candidates. Maximal degree in co-relation 7735. Up to 757 conditions per place. [2022-07-22 22:00:16,845 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 315 selfloop transitions, 109 changer transitions 31/494 dead transitions. [2022-07-22 22:00:16,845 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 494 transitions, 6559 flow [2022-07-22 22:00:16,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-22 22:00:16,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-07-22 22:00:16,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2067 transitions. [2022-07-22 22:00:16,846 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2022-07-22 22:00:16,846 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2067 transitions. [2022-07-22 22:00:16,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2067 transitions. [2022-07-22 22:00:16,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:16,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2067 transitions. [2022-07-22 22:00:16,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 53.0) internal successors, (2067), 39 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:16,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:16,850 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:16,850 INFO L186 Difference]: Start difference. First operand has 423 places, 437 transitions, 4838 flow. Second operand 39 states and 2067 transitions. [2022-07-22 22:00:16,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 494 transitions, 6559 flow [2022-07-22 22:00:16,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 494 transitions, 6087 flow, removed 164 selfloop flow, removed 33 redundant places. [2022-07-22 22:00:16,946 INFO L242 Difference]: Finished difference. Result has 434 places, 447 transitions, 4939 flow [2022-07-22 22:00:16,946 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4445, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=4939, PETRI_PLACES=434, PETRI_TRANSITIONS=447} [2022-07-22 22:00:16,946 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 346 predicate places. [2022-07-22 22:00:16,947 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 447 transitions, 4939 flow [2022-07-22 22:00:16,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:16,947 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:16,947 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] [2022-07-22 22:00:16,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-07-22 22:00:16,947 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:16,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:16,948 INFO L85 PathProgramCache]: Analyzing trace with hash 197309594, now seen corresponding path program 57 times [2022-07-22 22:00:16,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:16,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926773942] [2022-07-22 22:00:16,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:16,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:17,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:17,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:17,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926773942] [2022-07-22 22:00:17,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926773942] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:17,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:17,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 22:00:17,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247365105] [2022-07-22 22:00:17,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:17,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 22:00:17,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:17,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 22:00:17,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:00:17,246 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:17,247 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 447 transitions, 4939 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:17,247 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:17,247 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:17,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:19,191 INFO L129 PetriNetUnfolder]: 393/1130 cut-off events. [2022-07-22 22:00:19,192 INFO L130 PetriNetUnfolder]: For 16364/16364 co-relation queries the response was YES. [2022-07-22 22:00:19,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7857 conditions, 1130 events. 393/1130 cut-off events. For 16364/16364 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6736 event pairs, 38 based on Foata normal form. 1/1129 useless extension candidates. Maximal degree in co-relation 7719. Up to 752 conditions per place. [2022-07-22 22:00:19,207 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 317 selfloop transitions, 121 changer transitions 30/507 dead transitions. [2022-07-22 22:00:19,208 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 507 transitions, 6673 flow [2022-07-22 22:00:19,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-22 22:00:19,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-07-22 22:00:19,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2066 transitions. [2022-07-22 22:00:19,209 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.563557010365521 [2022-07-22 22:00:19,209 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2066 transitions. [2022-07-22 22:00:19,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2066 transitions. [2022-07-22 22:00:19,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:19,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2066 transitions. [2022-07-22 22:00:19,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 52.97435897435897) internal successors, (2066), 39 states have internal predecessors, (2066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:19,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:19,213 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:19,213 INFO L186 Difference]: Start difference. First operand has 434 places, 447 transitions, 4939 flow. Second operand 39 states and 2066 transitions. [2022-07-22 22:00:19,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 507 transitions, 6673 flow [2022-07-22 22:00:19,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 507 transitions, 6352 flow, removed 88 selfloop flow, removed 29 redundant places. [2022-07-22 22:00:19,307 INFO L242 Difference]: Finished difference. Result has 445 places, 460 transitions, 5209 flow [2022-07-22 22:00:19,307 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4648, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=5209, PETRI_PLACES=445, PETRI_TRANSITIONS=460} [2022-07-22 22:00:19,307 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 357 predicate places. [2022-07-22 22:00:19,307 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 460 transitions, 5209 flow [2022-07-22 22:00:19,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:19,307 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:19,308 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] [2022-07-22 22:00:19,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-07-22 22:00:19,308 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:19,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:19,308 INFO L85 PathProgramCache]: Analyzing trace with hash -278398910, now seen corresponding path program 58 times [2022-07-22 22:00:19,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:19,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917480861] [2022-07-22 22:00:19,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:19,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:19,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:19,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:19,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917480861] [2022-07-22 22:00:19,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917480861] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:19,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:19,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 22:00:19,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876957172] [2022-07-22 22:00:19,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:19,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 22:00:19,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:19,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 22:00:19,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:00:19,593 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:19,594 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 460 transitions, 5209 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:19,594 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:19,594 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:19,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:20,741 INFO L129 PetriNetUnfolder]: 389/1143 cut-off events. [2022-07-22 22:00:20,742 INFO L130 PetriNetUnfolder]: For 16576/16576 co-relation queries the response was YES. [2022-07-22 22:00:20,749 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7885 conditions, 1143 events. 389/1143 cut-off events. For 16576/16576 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6927 event pairs, 47 based on Foata normal form. 1/1142 useless extension candidates. Maximal degree in co-relation 7746. Up to 772 conditions per place. [2022-07-22 22:00:20,753 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 330 selfloop transitions, 96 changer transitions 36/501 dead transitions. [2022-07-22 22:00:20,753 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 501 transitions, 6571 flow [2022-07-22 22:00:20,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-22 22:00:20,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-07-22 22:00:20,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1910 transitions. [2022-07-22 22:00:20,754 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5644208037825059 [2022-07-22 22:00:20,754 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1910 transitions. [2022-07-22 22:00:20,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1910 transitions. [2022-07-22 22:00:20,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:20,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1910 transitions. [2022-07-22 22:00:20,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.05555555555556) internal successors, (1910), 36 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:20,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:20,758 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:20,758 INFO L186 Difference]: Start difference. First operand has 445 places, 460 transitions, 5209 flow. Second operand 36 states and 1910 transitions. [2022-07-22 22:00:20,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 501 transitions, 6571 flow [2022-07-22 22:00:20,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 501 transitions, 6331 flow, removed 52 selfloop flow, removed 35 redundant places. [2022-07-22 22:00:20,848 INFO L242 Difference]: Finished difference. Result has 449 places, 453 transitions, 5186 flow [2022-07-22 22:00:20,848 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4994, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=5186, PETRI_PLACES=449, PETRI_TRANSITIONS=453} [2022-07-22 22:00:20,848 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 361 predicate places. [2022-07-22 22:00:20,849 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 453 transitions, 5186 flow [2022-07-22 22:00:20,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:20,849 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:20,849 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] [2022-07-22 22:00:20,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-07-22 22:00:20,849 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:20,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:20,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1661837890, now seen corresponding path program 59 times [2022-07-22 22:00:20,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:20,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724438493] [2022-07-22 22:00:20,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:20,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:21,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:21,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:21,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724438493] [2022-07-22 22:00:21,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724438493] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:21,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:21,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:00:21,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229533738] [2022-07-22 22:00:21,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:21,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:00:21,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:21,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:00:21,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:00:21,104 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:21,105 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 453 transitions, 5186 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:21,105 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:21,105 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:21,105 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:22,753 INFO L129 PetriNetUnfolder]: 391/1127 cut-off events. [2022-07-22 22:00:22,753 INFO L130 PetriNetUnfolder]: For 17453/17453 co-relation queries the response was YES. [2022-07-22 22:00:22,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8096 conditions, 1127 events. 391/1127 cut-off events. For 17453/17453 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6755 event pairs, 32 based on Foata normal form. 1/1125 useless extension candidates. Maximal degree in co-relation 7954. Up to 725 conditions per place. [2022-07-22 22:00:22,766 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 290 selfloop transitions, 155 changer transitions 30/514 dead transitions. [2022-07-22 22:00:22,766 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 514 transitions, 7084 flow [2022-07-22 22:00:22,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-07-22 22:00:22,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-07-22 22:00:22,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 2471 transitions. [2022-07-22 22:00:22,768 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5593028519692168 [2022-07-22 22:00:22,768 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 2471 transitions. [2022-07-22 22:00:22,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 2471 transitions. [2022-07-22 22:00:22,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:22,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 2471 transitions. [2022-07-22 22:00:22,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 52.57446808510638) internal successors, (2471), 47 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:22,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 94.0) internal successors, (4512), 48 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:22,772 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 94.0) internal successors, (4512), 48 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:22,772 INFO L186 Difference]: Start difference. First operand has 449 places, 453 transitions, 5186 flow. Second operand 47 states and 2471 transitions. [2022-07-22 22:00:22,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 514 transitions, 7084 flow [2022-07-22 22:00:22,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 514 transitions, 6778 flow, removed 36 selfloop flow, removed 38 redundant places. [2022-07-22 22:00:22,872 INFO L242 Difference]: Finished difference. Result has 457 places, 464 transitions, 5599 flow [2022-07-22 22:00:22,873 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4924, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=5599, PETRI_PLACES=457, PETRI_TRANSITIONS=464} [2022-07-22 22:00:22,873 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 369 predicate places. [2022-07-22 22:00:22,873 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 464 transitions, 5599 flow [2022-07-22 22:00:22,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:22,874 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:22,874 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] [2022-07-22 22:00:22,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-07-22 22:00:22,874 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:22,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:22,874 INFO L85 PathProgramCache]: Analyzing trace with hash -359520012, now seen corresponding path program 60 times [2022-07-22 22:00:22,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:22,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86654237] [2022-07-22 22:00:22,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:22,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:23,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:23,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:23,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86654237] [2022-07-22 22:00:23,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86654237] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:23,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:23,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:00:23,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211106339] [2022-07-22 22:00:23,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:23,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:00:23,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:23,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:00:23,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:00:23,177 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:23,178 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 464 transitions, 5599 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:23,178 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:23,178 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:23,178 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:24,682 INFO L129 PetriNetUnfolder]: 386/1153 cut-off events. [2022-07-22 22:00:24,682 INFO L130 PetriNetUnfolder]: For 17408/17408 co-relation queries the response was YES. [2022-07-22 22:00:24,693 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8194 conditions, 1153 events. 386/1153 cut-off events. For 17408/17408 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7067 event pairs, 50 based on Foata normal form. 1/1152 useless extension candidates. Maximal degree in co-relation 8052. Up to 741 conditions per place. [2022-07-22 22:00:24,697 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 305 selfloop transitions, 126 changer transitions 36/506 dead transitions. [2022-07-22 22:00:24,697 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 506 transitions, 7033 flow [2022-07-22 22:00:24,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-22 22:00:24,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-07-22 22:00:24,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2314 transitions. [2022-07-22 22:00:24,703 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.559477756286267 [2022-07-22 22:00:24,703 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2314 transitions. [2022-07-22 22:00:24,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2314 transitions. [2022-07-22 22:00:24,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:24,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2314 transitions. [2022-07-22 22:00:24,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 52.59090909090909) internal successors, (2314), 44 states have internal predecessors, (2314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:24,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 94.0) internal successors, (4230), 45 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:24,708 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 94.0) internal successors, (4230), 45 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:24,708 INFO L186 Difference]: Start difference. First operand has 457 places, 464 transitions, 5599 flow. Second operand 44 states and 2314 transitions. [2022-07-22 22:00:24,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 506 transitions, 7033 flow [2022-07-22 22:00:24,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 506 transitions, 6624 flow, removed 117 selfloop flow, removed 36 redundant places. [2022-07-22 22:00:24,815 INFO L242 Difference]: Finished difference. Result has 466 places, 456 transitions, 5481 flow [2022-07-22 22:00:24,815 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5230, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=5481, PETRI_PLACES=466, PETRI_TRANSITIONS=456} [2022-07-22 22:00:24,815 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 378 predicate places. [2022-07-22 22:00:24,816 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 456 transitions, 5481 flow [2022-07-22 22:00:24,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:24,816 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:24,816 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] [2022-07-22 22:00:24,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-07-22 22:00:24,816 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:24,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:24,817 INFO L85 PathProgramCache]: Analyzing trace with hash -80926160, now seen corresponding path program 61 times [2022-07-22 22:00:24,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:24,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124125808] [2022-07-22 22:00:24,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:24,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:25,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:25,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:25,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124125808] [2022-07-22 22:00:25,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124125808] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:25,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:25,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-22 22:00:25,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762720138] [2022-07-22 22:00:25,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:25,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 22:00:25,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:25,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 22:00:25,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-07-22 22:00:25,107 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:25,108 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 456 transitions, 5481 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:25,108 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:25,108 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:25,108 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:27,876 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 22:00:29,302 INFO L129 PetriNetUnfolder]: 409/1244 cut-off events. [2022-07-22 22:00:29,303 INFO L130 PetriNetUnfolder]: For 18731/18731 co-relation queries the response was YES. [2022-07-22 22:00:29,312 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8687 conditions, 1244 events. 409/1244 cut-off events. For 18731/18731 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 7844 event pairs, 46 based on Foata normal form. 1/1243 useless extension candidates. Maximal degree in co-relation 8543. Up to 756 conditions per place. [2022-07-22 22:00:29,316 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 320 selfloop transitions, 171 changer transitions 22/552 dead transitions. [2022-07-22 22:00:29,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 552 transitions, 7732 flow [2022-07-22 22:00:29,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-07-22 22:00:29,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-07-22 22:00:29,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 2575 transitions. [2022-07-22 22:00:29,318 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5590534085974815 [2022-07-22 22:00:29,318 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 2575 transitions. [2022-07-22 22:00:29,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 2575 transitions. [2022-07-22 22:00:29,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:29,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 2575 transitions. [2022-07-22 22:00:29,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 52.55102040816327) internal successors, (2575), 49 states have internal predecessors, (2575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:29,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 94.0) internal successors, (4700), 50 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:29,322 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 94.0) internal successors, (4700), 50 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:29,322 INFO L186 Difference]: Start difference. First operand has 466 places, 456 transitions, 5481 flow. Second operand 49 states and 2575 transitions. [2022-07-22 22:00:29,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 552 transitions, 7732 flow [2022-07-22 22:00:29,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 552 transitions, 7343 flow, removed 35 selfloop flow, removed 44 redundant places. [2022-07-22 22:00:29,422 INFO L242 Difference]: Finished difference. Result has 468 places, 507 transitions, 6331 flow [2022-07-22 22:00:29,423 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5152, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=6331, PETRI_PLACES=468, PETRI_TRANSITIONS=507} [2022-07-22 22:00:29,423 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 380 predicate places. [2022-07-22 22:00:29,423 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 507 transitions, 6331 flow [2022-07-22 22:00:29,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:29,423 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:29,424 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] [2022-07-22 22:00:29,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-07-22 22:00:29,424 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:29,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:29,424 INFO L85 PathProgramCache]: Analyzing trace with hash 330824508, now seen corresponding path program 62 times [2022-07-22 22:00:29,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:29,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081203916] [2022-07-22 22:00:29,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:29,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:29,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:29,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:29,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081203916] [2022-07-22 22:00:29,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081203916] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:29,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:29,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 22:00:29,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363097965] [2022-07-22 22:00:29,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:29,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 22:00:29,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:29,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 22:00:29,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:00:29,706 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:29,707 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 507 transitions, 6331 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:29,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:29,707 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:29,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:30,846 INFO L129 PetriNetUnfolder]: 417/1285 cut-off events. [2022-07-22 22:00:30,846 INFO L130 PetriNetUnfolder]: For 20575/20575 co-relation queries the response was YES. [2022-07-22 22:00:30,857 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9167 conditions, 1285 events. 417/1285 cut-off events. For 20575/20575 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8292 event pairs, 48 based on Foata normal form. 1/1284 useless extension candidates. Maximal degree in co-relation 9023. Up to 874 conditions per place. [2022-07-22 22:00:30,862 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 398 selfloop transitions, 88 changer transitions 31/556 dead transitions. [2022-07-22 22:00:30,862 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 556 transitions, 8040 flow [2022-07-22 22:00:30,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-22 22:00:30,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-22 22:00:30,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1803 transitions. [2022-07-22 22:00:30,863 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.564142678347935 [2022-07-22 22:00:30,863 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1803 transitions. [2022-07-22 22:00:30,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1803 transitions. [2022-07-22 22:00:30,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:30,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1803 transitions. [2022-07-22 22:00:30,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.029411764705884) internal successors, (1803), 34 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:30,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:30,866 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:30,866 INFO L186 Difference]: Start difference. First operand has 468 places, 507 transitions, 6331 flow. Second operand 34 states and 1803 transitions. [2022-07-22 22:00:30,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 556 transitions, 8040 flow [2022-07-22 22:00:30,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 556 transitions, 7622 flow, removed 129 selfloop flow, removed 33 redundant places. [2022-07-22 22:00:30,976 INFO L242 Difference]: Finished difference. Result has 476 places, 514 transitions, 6321 flow [2022-07-22 22:00:30,976 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5917, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=6321, PETRI_PLACES=476, PETRI_TRANSITIONS=514} [2022-07-22 22:00:30,976 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 388 predicate places. [2022-07-22 22:00:30,976 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 514 transitions, 6321 flow [2022-07-22 22:00:30,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:30,977 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:30,977 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] [2022-07-22 22:00:30,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-07-22 22:00:30,977 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:30,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:30,977 INFO L85 PathProgramCache]: Analyzing trace with hash 722367228, now seen corresponding path program 63 times [2022-07-22 22:00:30,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:30,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737824995] [2022-07-22 22:00:30,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:30,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:31,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:31,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:31,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737824995] [2022-07-22 22:00:31,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737824995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:31,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:31,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:00:31,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985842484] [2022-07-22 22:00:31,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:31,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:00:31,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:31,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:00:31,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:00:31,252 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:31,253 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 514 transitions, 6321 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:31,253 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:31,253 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:31,253 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:32,468 INFO L129 PetriNetUnfolder]: 415/1289 cut-off events. [2022-07-22 22:00:32,468 INFO L130 PetriNetUnfolder]: For 22493/22493 co-relation queries the response was YES. [2022-07-22 22:00:32,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9279 conditions, 1289 events. 415/1289 cut-off events. For 22493/22493 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8341 event pairs, 41 based on Foata normal form. 1/1288 useless extension candidates. Maximal degree in co-relation 9122. Up to 866 conditions per place. [2022-07-22 22:00:32,512 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 387 selfloop transitions, 97 changer transitions 31/554 dead transitions. [2022-07-22 22:00:32,512 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 554 transitions, 7984 flow [2022-07-22 22:00:32,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-22 22:00:32,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-22 22:00:32,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1854 transitions. [2022-07-22 22:00:32,514 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5635258358662614 [2022-07-22 22:00:32,514 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1854 transitions. [2022-07-22 22:00:32,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1854 transitions. [2022-07-22 22:00:32,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:32,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1854 transitions. [2022-07-22 22:00:32,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.97142857142857) internal successors, (1854), 35 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:32,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:32,517 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:32,517 INFO L186 Difference]: Start difference. First operand has 476 places, 514 transitions, 6321 flow. Second operand 35 states and 1854 transitions. [2022-07-22 22:00:32,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 554 transitions, 7984 flow [2022-07-22 22:00:32,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 554 transitions, 7732 flow, removed 57 selfloop flow, removed 29 redundant places. [2022-07-22 22:00:32,638 INFO L242 Difference]: Finished difference. Result has 483 places, 512 transitions, 6402 flow [2022-07-22 22:00:32,638 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6099, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6402, PETRI_PLACES=483, PETRI_TRANSITIONS=512} [2022-07-22 22:00:32,638 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 395 predicate places. [2022-07-22 22:00:32,639 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 512 transitions, 6402 flow [2022-07-22 22:00:32,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:32,639 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:32,639 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:00:32,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-07-22 22:00:32,639 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:32,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:32,639 INFO L85 PathProgramCache]: Analyzing trace with hash -686276450, now seen corresponding path program 64 times [2022-07-22 22:00:32,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:32,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27617566] [2022-07-22 22:00:32,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:32,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:32,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:32,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:32,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27617566] [2022-07-22 22:00:32,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27617566] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:32,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:32,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:00:32,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284054600] [2022-07-22 22:00:32,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:32,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:00:32,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:32,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:00:32,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:00:32,895 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:32,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 512 transitions, 6402 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:32,895 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:32,895 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:32,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:34,646 INFO L129 PetriNetUnfolder]: 412/1277 cut-off events. [2022-07-22 22:00:34,646 INFO L130 PetriNetUnfolder]: For 22017/22017 co-relation queries the response was YES. [2022-07-22 22:00:34,658 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9279 conditions, 1277 events. 412/1277 cut-off events. For 22017/22017 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 8208 event pairs, 57 based on Foata normal form. 1/1276 useless extension candidates. Maximal degree in co-relation 9121. Up to 874 conditions per place. [2022-07-22 22:00:34,663 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 396 selfloop transitions, 92 changer transitions 26/553 dead transitions. [2022-07-22 22:00:34,663 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 553 transitions, 7978 flow [2022-07-22 22:00:34,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-22 22:00:34,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-22 22:00:34,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1950 transitions. [2022-07-22 22:00:34,664 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5606670500287522 [2022-07-22 22:00:34,664 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1950 transitions. [2022-07-22 22:00:34,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1950 transitions. [2022-07-22 22:00:34,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:34,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1950 transitions. [2022-07-22 22:00:34,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.7027027027027) internal successors, (1950), 37 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:34,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:34,668 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:34,668 INFO L186 Difference]: Start difference. First operand has 483 places, 512 transitions, 6402 flow. Second operand 37 states and 1950 transitions. [2022-07-22 22:00:34,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 553 transitions, 7978 flow [2022-07-22 22:00:34,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 553 transitions, 7679 flow, removed 65 selfloop flow, removed 32 redundant places. [2022-07-22 22:00:34,793 INFO L242 Difference]: Finished difference. Result has 487 places, 516 transitions, 6442 flow [2022-07-22 22:00:34,793 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6147, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=6442, PETRI_PLACES=487, PETRI_TRANSITIONS=516} [2022-07-22 22:00:34,795 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 399 predicate places. [2022-07-22 22:00:34,795 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 516 transitions, 6442 flow [2022-07-22 22:00:34,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:34,796 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:34,796 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] [2022-07-22 22:00:34,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-07-22 22:00:34,796 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:34,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:34,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1439843804, now seen corresponding path program 65 times [2022-07-22 22:00:34,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:34,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175927467] [2022-07-22 22:00:34,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:34,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:35,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:35,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:35,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175927467] [2022-07-22 22:00:35,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175927467] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:35,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:35,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:00:35,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268622080] [2022-07-22 22:00:35,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:35,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:00:35,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:35,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:00:35,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:00:35,082 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:35,083 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 516 transitions, 6442 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:35,083 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:35,083 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:35,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:36,983 INFO L129 PetriNetUnfolder]: 448/1398 cut-off events. [2022-07-22 22:00:36,983 INFO L130 PetriNetUnfolder]: For 25046/25046 co-relation queries the response was YES. [2022-07-22 22:00:36,998 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10135 conditions, 1398 events. 448/1398 cut-off events. For 25046/25046 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9259 event pairs, 44 based on Foata normal form. 1/1397 useless extension candidates. Maximal degree in co-relation 9975. Up to 798 conditions per place. [2022-07-22 22:00:37,003 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 320 selfloop transitions, 235 changer transitions 24/618 dead transitions. [2022-07-22 22:00:37,003 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 618 transitions, 9185 flow [2022-07-22 22:00:37,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-07-22 22:00:37,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-07-22 22:00:37,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 2423 transitions. [2022-07-22 22:00:37,004 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5603607770582794 [2022-07-22 22:00:37,005 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 2423 transitions. [2022-07-22 22:00:37,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 2423 transitions. [2022-07-22 22:00:37,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:37,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 2423 transitions. [2022-07-22 22:00:37,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 52.67391304347826) internal successors, (2423), 46 states have internal predecessors, (2423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:37,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 94.0) internal successors, (4418), 47 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:37,012 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 94.0) internal successors, (4418), 47 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:37,012 INFO L186 Difference]: Start difference. First operand has 487 places, 516 transitions, 6442 flow. Second operand 46 states and 2423 transitions. [2022-07-22 22:00:37,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 618 transitions, 9185 flow [2022-07-22 22:00:37,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 618 transitions, 8894 flow, removed 67 selfloop flow, removed 30 redundant places. [2022-07-22 22:00:37,200 INFO L242 Difference]: Finished difference. Result has 505 places, 574 transitions, 7918 flow [2022-07-22 22:00:37,201 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6197, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=7918, PETRI_PLACES=505, PETRI_TRANSITIONS=574} [2022-07-22 22:00:37,201 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 417 predicate places. [2022-07-22 22:00:37,201 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 574 transitions, 7918 flow [2022-07-22 22:00:37,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:37,201 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:37,201 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] [2022-07-22 22:00:37,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-07-22 22:00:37,201 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:37,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:37,202 INFO L85 PathProgramCache]: Analyzing trace with hash 52893064, now seen corresponding path program 66 times [2022-07-22 22:00:37,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:37,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154799225] [2022-07-22 22:00:37,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:37,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:37,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:37,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:37,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154799225] [2022-07-22 22:00:37,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154799225] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:37,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:37,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:00:37,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533788073] [2022-07-22 22:00:37,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:37,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:00:37,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:37,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:00:37,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:00:37,471 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:37,471 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 574 transitions, 7918 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:37,471 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:37,471 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:37,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:39,044 INFO L129 PetriNetUnfolder]: 452/1406 cut-off events. [2022-07-22 22:00:39,044 INFO L130 PetriNetUnfolder]: For 27687/27687 co-relation queries the response was YES. [2022-07-22 22:00:39,057 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10765 conditions, 1406 events. 452/1406 cut-off events. For 27687/27687 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9359 event pairs, 46 based on Foata normal form. 1/1405 useless extension candidates. Maximal degree in co-relation 10599. Up to 944 conditions per place. [2022-07-22 22:00:39,062 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 443 selfloop transitions, 113 changer transitions 23/618 dead transitions. [2022-07-22 22:00:39,062 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 618 transitions, 9692 flow [2022-07-22 22:00:39,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-22 22:00:39,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-22 22:00:39,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1960 transitions. [2022-07-22 22:00:39,064 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5635422656699253 [2022-07-22 22:00:39,064 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1960 transitions. [2022-07-22 22:00:39,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1960 transitions. [2022-07-22 22:00:39,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:39,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1960 transitions. [2022-07-22 22:00:39,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.972972972972975) internal successors, (1960), 37 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:39,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:39,067 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:39,067 INFO L186 Difference]: Start difference. First operand has 505 places, 574 transitions, 7918 flow. Second operand 37 states and 1960 transitions. [2022-07-22 22:00:39,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 618 transitions, 9692 flow [2022-07-22 22:00:39,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 618 transitions, 9120 flow, removed 176 selfloop flow, removed 33 redundant places. [2022-07-22 22:00:39,248 INFO L242 Difference]: Finished difference. Result has 513 places, 583 transitions, 7804 flow [2022-07-22 22:00:39,248 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7352, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7804, PETRI_PLACES=513, PETRI_TRANSITIONS=583} [2022-07-22 22:00:39,248 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 425 predicate places. [2022-07-22 22:00:39,248 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 583 transitions, 7804 flow [2022-07-22 22:00:39,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:39,249 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:39,249 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] [2022-07-22 22:00:39,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-07-22 22:00:39,249 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:39,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:39,249 INFO L85 PathProgramCache]: Analyzing trace with hash -629395902, now seen corresponding path program 67 times [2022-07-22 22:00:39,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:39,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328241976] [2022-07-22 22:00:39,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:39,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:39,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:39,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:39,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328241976] [2022-07-22 22:00:39,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328241976] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:39,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:39,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 22:00:39,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004111124] [2022-07-22 22:00:39,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:39,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 22:00:39,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:39,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 22:00:39,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:00:39,533 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:39,534 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 583 transitions, 7804 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:39,534 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:39,534 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:39,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:40,743 INFO L129 PetriNetUnfolder]: 446/1385 cut-off events. [2022-07-22 22:00:40,743 INFO L130 PetriNetUnfolder]: For 27548/27548 co-relation queries the response was YES. [2022-07-22 22:00:40,759 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10652 conditions, 1385 events. 446/1385 cut-off events. For 27548/27548 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 9165 event pairs, 40 based on Foata normal form. 1/1384 useless extension candidates. Maximal degree in co-relation 10480. Up to 920 conditions per place. [2022-07-22 22:00:40,764 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 438 selfloop transitions, 130 changer transitions 22/629 dead transitions. [2022-07-22 22:00:40,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 629 transitions, 9697 flow [2022-07-22 22:00:40,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-22 22:00:40,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-22 22:00:40,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1808 transitions. [2022-07-22 22:00:40,765 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5657071339173968 [2022-07-22 22:00:40,765 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1808 transitions. [2022-07-22 22:00:40,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1808 transitions. [2022-07-22 22:00:40,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:40,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1808 transitions. [2022-07-22 22:00:40,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.1764705882353) internal successors, (1808), 34 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:40,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:40,768 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:40,768 INFO L186 Difference]: Start difference. First operand has 513 places, 583 transitions, 7804 flow. Second operand 34 states and 1808 transitions. [2022-07-22 22:00:40,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 629 transitions, 9697 flow [2022-07-22 22:00:40,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 629 transitions, 9394 flow, removed 69 selfloop flow, removed 31 redundant places. [2022-07-22 22:00:40,953 INFO L242 Difference]: Finished difference. Result has 516 places, 587 transitions, 7981 flow [2022-07-22 22:00:40,954 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7526, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=7981, PETRI_PLACES=516, PETRI_TRANSITIONS=587} [2022-07-22 22:00:40,954 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 428 predicate places. [2022-07-22 22:00:40,954 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 587 transitions, 7981 flow [2022-07-22 22:00:40,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:40,954 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:40,954 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] [2022-07-22 22:00:40,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-07-22 22:00:40,954 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:40,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:40,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1797616870, now seen corresponding path program 68 times [2022-07-22 22:00:40,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:40,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312341666] [2022-07-22 22:00:40,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:40,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:41,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:41,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:41,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312341666] [2022-07-22 22:00:41,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312341666] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:41,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:41,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:00:41,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130207932] [2022-07-22 22:00:41,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:41,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:00:41,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:41,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:00:41,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:00:41,248 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:41,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 587 transitions, 7981 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:41,249 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:41,249 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:41,249 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:42,620 INFO L129 PetriNetUnfolder]: 443/1382 cut-off events. [2022-07-22 22:00:42,620 INFO L130 PetriNetUnfolder]: For 25823/25823 co-relation queries the response was YES. [2022-07-22 22:00:42,632 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10504 conditions, 1382 events. 443/1382 cut-off events. For 25823/25823 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 9171 event pairs, 57 based on Foata normal form. 1/1381 useless extension candidates. Maximal degree in co-relation 10332. Up to 941 conditions per place. [2022-07-22 22:00:42,636 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 449 selfloop transitions, 105 changer transitions 22/615 dead transitions. [2022-07-22 22:00:42,637 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 615 transitions, 9358 flow [2022-07-22 22:00:42,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-22 22:00:42,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-22 22:00:42,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1853 transitions. [2022-07-22 22:00:42,638 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5632218844984802 [2022-07-22 22:00:42,638 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1853 transitions. [2022-07-22 22:00:42,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1853 transitions. [2022-07-22 22:00:42,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:42,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1853 transitions. [2022-07-22 22:00:42,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.94285714285714) internal successors, (1853), 35 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:42,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:42,641 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:42,641 INFO L186 Difference]: Start difference. First operand has 516 places, 587 transitions, 7981 flow. Second operand 35 states and 1853 transitions. [2022-07-22 22:00:42,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 615 transitions, 9358 flow [2022-07-22 22:00:42,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 615 transitions, 9074 flow, removed 71 selfloop flow, removed 26 redundant places. [2022-07-22 22:00:42,814 INFO L242 Difference]: Finished difference. Result has 526 places, 582 transitions, 7910 flow [2022-07-22 22:00:42,814 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7707, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=7910, PETRI_PLACES=526, PETRI_TRANSITIONS=582} [2022-07-22 22:00:42,814 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 438 predicate places. [2022-07-22 22:00:42,814 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 582 transitions, 7910 flow [2022-07-22 22:00:42,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:42,815 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:42,815 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] [2022-07-22 22:00:42,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-07-22 22:00:42,815 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:42,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:42,815 INFO L85 PathProgramCache]: Analyzing trace with hash -87403888, now seen corresponding path program 69 times [2022-07-22 22:00:42,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:42,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166285484] [2022-07-22 22:00:42,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:42,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:43,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:43,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:43,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166285484] [2022-07-22 22:00:43,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166285484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:43,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:43,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 22:00:43,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814694000] [2022-07-22 22:00:43,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:43,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 22:00:43,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:43,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 22:00:43,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:00:43,060 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:43,060 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 582 transitions, 7910 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:43,060 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:43,060 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:43,060 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:44,344 INFO L129 PetriNetUnfolder]: 451/1396 cut-off events. [2022-07-22 22:00:44,344 INFO L130 PetriNetUnfolder]: For 25742/25742 co-relation queries the response was YES. [2022-07-22 22:00:44,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10739 conditions, 1396 events. 451/1396 cut-off events. For 25742/25742 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9253 event pairs, 55 based on Foata normal form. 1/1395 useless extension candidates. Maximal degree in co-relation 10563. Up to 919 conditions per place. [2022-07-22 22:00:44,366 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 437 selfloop transitions, 126 changer transitions 32/634 dead transitions. [2022-07-22 22:00:44,366 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 634 transitions, 9829 flow [2022-07-22 22:00:44,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-22 22:00:44,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-07-22 22:00:44,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1912 transitions. [2022-07-22 22:00:44,368 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5650118203309693 [2022-07-22 22:00:44,368 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1912 transitions. [2022-07-22 22:00:44,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1912 transitions. [2022-07-22 22:00:44,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:44,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1912 transitions. [2022-07-22 22:00:44,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.111111111111114) internal successors, (1912), 36 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:44,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:44,371 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:44,371 INFO L186 Difference]: Start difference. First operand has 526 places, 582 transitions, 7910 flow. Second operand 36 states and 1912 transitions. [2022-07-22 22:00:44,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 634 transitions, 9829 flow [2022-07-22 22:00:44,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 634 transitions, 9543 flow, removed 14 selfloop flow, removed 36 redundant places. [2022-07-22 22:00:44,562 INFO L242 Difference]: Finished difference. Result has 528 places, 588 transitions, 8099 flow [2022-07-22 22:00:44,562 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7638, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=8099, PETRI_PLACES=528, PETRI_TRANSITIONS=588} [2022-07-22 22:00:44,562 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 440 predicate places. [2022-07-22 22:00:44,563 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 588 transitions, 8099 flow [2022-07-22 22:00:44,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:44,563 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:44,563 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] [2022-07-22 22:00:44,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-07-22 22:00:44,563 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:44,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:44,563 INFO L85 PathProgramCache]: Analyzing trace with hash 465638924, now seen corresponding path program 70 times [2022-07-22 22:00:44,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:44,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89887499] [2022-07-22 22:00:44,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:44,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:44,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:44,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:44,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89887499] [2022-07-22 22:00:44,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89887499] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:44,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:44,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 22:00:44,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076580551] [2022-07-22 22:00:44,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:44,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 22:00:44,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:44,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 22:00:44,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:00:44,848 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:44,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 588 transitions, 8099 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:44,849 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:44,849 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:44,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:46,109 INFO L129 PetriNetUnfolder]: 444/1379 cut-off events. [2022-07-22 22:00:46,109 INFO L130 PetriNetUnfolder]: For 26043/26043 co-relation queries the response was YES. [2022-07-22 22:00:46,126 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10701 conditions, 1379 events. 444/1379 cut-off events. For 26043/26043 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 9104 event pairs, 45 based on Foata normal form. 1/1378 useless extension candidates. Maximal degree in co-relation 10521. Up to 921 conditions per place. [2022-07-22 22:00:46,131 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 440 selfloop transitions, 117 changer transitions 27/623 dead transitions. [2022-07-22 22:00:46,131 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 623 transitions, 9762 flow [2022-07-22 22:00:46,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-22 22:00:46,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-22 22:00:46,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1811 transitions. [2022-07-22 22:00:46,133 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5666458072590739 [2022-07-22 22:00:46,133 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1811 transitions. [2022-07-22 22:00:46,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1811 transitions. [2022-07-22 22:00:46,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:46,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1811 transitions. [2022-07-22 22:00:46,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.26470588235294) internal successors, (1811), 34 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:46,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:46,136 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:46,136 INFO L186 Difference]: Start difference. First operand has 528 places, 588 transitions, 8099 flow. Second operand 34 states and 1811 transitions. [2022-07-22 22:00:46,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 623 transitions, 9762 flow [2022-07-22 22:00:46,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 623 transitions, 9419 flow, removed 40 selfloop flow, removed 34 redundant places. [2022-07-22 22:00:46,342 INFO L242 Difference]: Finished difference. Result has 528 places, 586 transitions, 8089 flow [2022-07-22 22:00:46,342 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7786, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=8089, PETRI_PLACES=528, PETRI_TRANSITIONS=586} [2022-07-22 22:00:46,343 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 440 predicate places. [2022-07-22 22:00:46,343 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 586 transitions, 8089 flow [2022-07-22 22:00:46,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:46,343 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:46,343 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] [2022-07-22 22:00:46,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-07-22 22:00:46,343 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:46,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:46,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1410787142, now seen corresponding path program 71 times [2022-07-22 22:00:46,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:46,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113254690] [2022-07-22 22:00:46,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:46,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:46,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:46,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:46,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113254690] [2022-07-22 22:00:46,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113254690] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:46,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:46,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 22:00:46,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448844182] [2022-07-22 22:00:46,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:46,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 22:00:46,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:46,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 22:00:46,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:00:46,619 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:46,620 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 586 transitions, 8089 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:46,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:46,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:46,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:47,910 INFO L129 PetriNetUnfolder]: 438/1367 cut-off events. [2022-07-22 22:00:47,910 INFO L130 PetriNetUnfolder]: For 25493/25493 co-relation queries the response was YES. [2022-07-22 22:00:47,929 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10637 conditions, 1367 events. 438/1367 cut-off events. For 25493/25493 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9033 event pairs, 47 based on Foata normal form. 1/1366 useless extension candidates. Maximal degree in co-relation 10458. Up to 915 conditions per place. [2022-07-22 22:00:47,934 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 440 selfloop transitions, 123 changer transitions 20/622 dead transitions. [2022-07-22 22:00:47,934 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 622 transitions, 9838 flow [2022-07-22 22:00:47,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-22 22:00:47,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-22 22:00:47,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1707 transitions. [2022-07-22 22:00:47,935 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5674867021276596 [2022-07-22 22:00:47,935 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1707 transitions. [2022-07-22 22:00:47,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1707 transitions. [2022-07-22 22:00:47,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:47,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1707 transitions. [2022-07-22 22:00:47,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.34375) internal successors, (1707), 32 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:47,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:47,938 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:47,938 INFO L186 Difference]: Start difference. First operand has 528 places, 586 transitions, 8089 flow. Second operand 32 states and 1707 transitions. [2022-07-22 22:00:47,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 622 transitions, 9838 flow [2022-07-22 22:00:48,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 622 transitions, 9519 flow, removed 28 selfloop flow, removed 31 redundant places. [2022-07-22 22:00:48,167 INFO L242 Difference]: Finished difference. Result has 526 places, 591 transitions, 8262 flow [2022-07-22 22:00:48,168 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7800, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=8262, PETRI_PLACES=526, PETRI_TRANSITIONS=591} [2022-07-22 22:00:48,169 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 438 predicate places. [2022-07-22 22:00:48,169 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 591 transitions, 8262 flow [2022-07-22 22:00:48,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:48,170 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:48,170 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] [2022-07-22 22:00:48,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-07-22 22:00:48,170 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:48,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:48,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1269499718, now seen corresponding path program 72 times [2022-07-22 22:00:48,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:48,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062904614] [2022-07-22 22:00:48,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:48,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:48,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:48,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:48,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062904614] [2022-07-22 22:00:48,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062904614] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:48,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:48,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-22 22:00:48,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895339994] [2022-07-22 22:00:48,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:48,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 22:00:48,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:48,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 22:00:48,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-07-22 22:00:48,476 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:48,477 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 591 transitions, 8262 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:48,477 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:48,477 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:48,477 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:50,473 INFO L129 PetriNetUnfolder]: 437/1358 cut-off events. [2022-07-22 22:00:50,473 INFO L130 PetriNetUnfolder]: For 25884/25884 co-relation queries the response was YES. [2022-07-22 22:00:50,486 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10627 conditions, 1358 events. 437/1358 cut-off events. For 25884/25884 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 8898 event pairs, 41 based on Foata normal form. 1/1357 useless extension candidates. Maximal degree in co-relation 10450. Up to 868 conditions per place. [2022-07-22 22:00:50,491 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 429 selfloop transitions, 148 changer transitions 24/640 dead transitions. [2022-07-22 22:00:50,491 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 640 transitions, 10204 flow [2022-07-22 22:00:50,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-07-22 22:00:50,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-07-22 22:00:50,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 2663 transitions. [2022-07-22 22:00:50,493 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5554860241969128 [2022-07-22 22:00:50,493 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 2663 transitions. [2022-07-22 22:00:50,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 2663 transitions. [2022-07-22 22:00:50,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:50,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 2663 transitions. [2022-07-22 22:00:50,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 52.21568627450981) internal successors, (2663), 51 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:50,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 94.0) internal successors, (4888), 52 states have internal predecessors, (4888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:50,497 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 94.0) internal successors, (4888), 52 states have internal predecessors, (4888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:50,497 INFO L186 Difference]: Start difference. First operand has 526 places, 591 transitions, 8262 flow. Second operand 51 states and 2663 transitions. [2022-07-22 22:00:50,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 640 transitions, 10204 flow [2022-07-22 22:00:50,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 640 transitions, 9769 flow, removed 121 selfloop flow, removed 27 redundant places. [2022-07-22 22:00:50,689 INFO L242 Difference]: Finished difference. Result has 557 places, 595 transitions, 8350 flow [2022-07-22 22:00:50,689 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7899, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=8350, PETRI_PLACES=557, PETRI_TRANSITIONS=595} [2022-07-22 22:00:50,689 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 469 predicate places. [2022-07-22 22:00:50,689 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 595 transitions, 8350 flow [2022-07-22 22:00:50,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:50,689 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:50,690 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] [2022-07-22 22:00:50,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-07-22 22:00:50,690 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:50,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:50,690 INFO L85 PathProgramCache]: Analyzing trace with hash 82159902, now seen corresponding path program 73 times [2022-07-22 22:00:50,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:50,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373352930] [2022-07-22 22:00:50,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:50,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:50,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:50,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:50,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373352930] [2022-07-22 22:00:50,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373352930] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:50,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:50,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 22:00:50,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030908417] [2022-07-22 22:00:50,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:50,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 22:00:50,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:50,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 22:00:50,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:00:50,988 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:50,988 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 595 transitions, 8350 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:50,988 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:50,988 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:50,988 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:52,265 INFO L129 PetriNetUnfolder]: 437/1380 cut-off events. [2022-07-22 22:00:52,265 INFO L130 PetriNetUnfolder]: For 25366/25366 co-relation queries the response was YES. [2022-07-22 22:00:52,281 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10709 conditions, 1380 events. 437/1380 cut-off events. For 25366/25366 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 9149 event pairs, 52 based on Foata normal form. 1/1379 useless extension candidates. Maximal degree in co-relation 10524. Up to 915 conditions per place. [2022-07-22 22:00:52,285 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 445 selfloop transitions, 127 changer transitions 18/629 dead transitions. [2022-07-22 22:00:52,285 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 629 transitions, 10003 flow [2022-07-22 22:00:52,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-22 22:00:52,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-22 22:00:52,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1759 transitions. [2022-07-22 22:00:52,287 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5670535138620245 [2022-07-22 22:00:52,287 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1759 transitions. [2022-07-22 22:00:52,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1759 transitions. [2022-07-22 22:00:52,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:52,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1759 transitions. [2022-07-22 22:00:52,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.303030303030305) internal successors, (1759), 33 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:52,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:52,290 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:52,290 INFO L186 Difference]: Start difference. First operand has 557 places, 595 transitions, 8350 flow. Second operand 33 states and 1759 transitions. [2022-07-22 22:00:52,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 629 transitions, 10003 flow [2022-07-22 22:00:52,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 629 transitions, 9567 flow, removed 62 selfloop flow, removed 46 redundant places. [2022-07-22 22:00:52,477 INFO L242 Difference]: Finished difference. Result has 541 places, 600 transitions, 8349 flow [2022-07-22 22:00:52,477 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7930, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=8349, PETRI_PLACES=541, PETRI_TRANSITIONS=600} [2022-07-22 22:00:52,478 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 453 predicate places. [2022-07-22 22:00:52,478 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 600 transitions, 8349 flow [2022-07-22 22:00:52,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:52,478 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:52,478 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] [2022-07-22 22:00:52,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-07-22 22:00:52,478 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:52,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:52,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1114092190, now seen corresponding path program 74 times [2022-07-22 22:00:52,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:52,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704161568] [2022-07-22 22:00:52,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:52,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:52,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:52,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:52,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704161568] [2022-07-22 22:00:52,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704161568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:52,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:52,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:00:52,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710100480] [2022-07-22 22:00:52,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:52,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:00:52,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:52,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:00:52,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:00:52,763 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:52,764 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 600 transitions, 8349 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:52,764 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:52,764 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:52,764 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:54,478 INFO L129 PetriNetUnfolder]: 438/1374 cut-off events. [2022-07-22 22:00:54,478 INFO L130 PetriNetUnfolder]: For 26036/26036 co-relation queries the response was YES. [2022-07-22 22:00:54,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10643 conditions, 1374 events. 438/1374 cut-off events. For 26036/26036 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 9069 event pairs, 40 based on Foata normal form. 1/1373 useless extension candidates. Maximal degree in co-relation 10461. Up to 962 conditions per place. [2022-07-22 22:00:54,499 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 479 selfloop transitions, 91 changer transitions 22/631 dead transitions. [2022-07-22 22:00:54,499 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 631 transitions, 9977 flow [2022-07-22 22:00:54,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-22 22:00:54,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-22 22:00:54,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1846 transitions. [2022-07-22 22:00:54,500 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5610942249240122 [2022-07-22 22:00:54,501 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1846 transitions. [2022-07-22 22:00:54,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1846 transitions. [2022-07-22 22:00:54,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:54,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1846 transitions. [2022-07-22 22:00:54,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.74285714285714) internal successors, (1846), 35 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:54,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:54,503 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:54,504 INFO L186 Difference]: Start difference. First operand has 541 places, 600 transitions, 8349 flow. Second operand 35 states and 1846 transitions. [2022-07-22 22:00:54,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 631 transitions, 9977 flow [2022-07-22 22:00:54,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 631 transitions, 9694 flow, removed 46 selfloop flow, removed 28 redundant places. [2022-07-22 22:00:54,703 INFO L242 Difference]: Finished difference. Result has 549 places, 598 transitions, 8331 flow [2022-07-22 22:00:54,704 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8084, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=8331, PETRI_PLACES=549, PETRI_TRANSITIONS=598} [2022-07-22 22:00:54,704 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 461 predicate places. [2022-07-22 22:00:54,704 INFO L495 AbstractCegarLoop]: Abstraction has has 549 places, 598 transitions, 8331 flow [2022-07-22 22:00:54,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:54,704 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:54,704 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] [2022-07-22 22:00:54,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-07-22 22:00:54,704 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:54,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:54,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1402128276, now seen corresponding path program 75 times [2022-07-22 22:00:54,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:54,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136350847] [2022-07-22 22:00:54,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:54,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:55,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:55,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:55,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136350847] [2022-07-22 22:00:55,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136350847] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:55,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:55,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-22 22:00:55,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322203736] [2022-07-22 22:00:55,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:55,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 22:00:55,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:55,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 22:00:55,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-07-22 22:00:55,006 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:55,007 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 598 transitions, 8331 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:55,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:55,007 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:55,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:56,859 INFO L129 PetriNetUnfolder]: 431/1361 cut-off events. [2022-07-22 22:00:56,859 INFO L130 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2022-07-22 22:00:56,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10496 conditions, 1361 events. 431/1361 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 8989 event pairs, 46 based on Foata normal form. 1/1359 useless extension candidates. Maximal degree in co-relation 10312. Up to 960 conditions per place. [2022-07-22 22:00:56,881 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 478 selfloop transitions, 90 changer transitions 16/623 dead transitions. [2022-07-22 22:00:56,882 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 576 places, 623 transitions, 9725 flow [2022-07-22 22:00:56,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-22 22:00:56,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-07-22 22:00:56,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1888 transitions. [2022-07-22 22:00:56,883 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.557919621749409 [2022-07-22 22:00:56,883 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1888 transitions. [2022-07-22 22:00:56,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1888 transitions. [2022-07-22 22:00:56,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:56,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1888 transitions. [2022-07-22 22:00:56,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.44444444444444) internal successors, (1888), 36 states have internal predecessors, (1888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:56,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:56,886 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:56,886 INFO L186 Difference]: Start difference. First operand has 549 places, 598 transitions, 8331 flow. Second operand 36 states and 1888 transitions. [2022-07-22 22:00:56,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 576 places, 623 transitions, 9725 flow [2022-07-22 22:00:57,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 623 transitions, 9449 flow, removed 46 selfloop flow, removed 33 redundant places. [2022-07-22 22:00:57,075 INFO L242 Difference]: Finished difference. Result has 551 places, 597 transitions, 8269 flow [2022-07-22 22:00:57,075 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8071, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=8269, PETRI_PLACES=551, PETRI_TRANSITIONS=597} [2022-07-22 22:00:57,075 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 463 predicate places. [2022-07-22 22:00:57,075 INFO L495 AbstractCegarLoop]: Abstraction has has 551 places, 597 transitions, 8269 flow [2022-07-22 22:00:57,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:57,076 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:57,076 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] [2022-07-22 22:00:57,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-07-22 22:00:57,076 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:57,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:57,076 INFO L85 PathProgramCache]: Analyzing trace with hash 84633238, now seen corresponding path program 76 times [2022-07-22 22:00:57,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:57,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028220246] [2022-07-22 22:00:57,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:57,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:57,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:57,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:57,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028220246] [2022-07-22 22:00:57,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028220246] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:57,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:57,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-22 22:00:57,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228724411] [2022-07-22 22:00:57,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:57,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 22:00:57,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:57,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 22:00:57,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-07-22 22:00:57,373 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:57,374 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 597 transitions, 8269 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:57,374 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:57,374 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:57,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:59,122 INFO L129 PetriNetUnfolder]: 453/1429 cut-off events. [2022-07-22 22:00:59,122 INFO L130 PetriNetUnfolder]: For 27826/27826 co-relation queries the response was YES. [2022-07-22 22:00:59,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11134 conditions, 1429 events. 453/1429 cut-off events. For 27826/27826 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 9603 event pairs, 50 based on Foata normal form. 1/1428 useless extension candidates. Maximal degree in co-relation 10949. Up to 837 conditions per place. [2022-07-22 22:00:59,147 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 386 selfloop transitions, 222 changer transitions 23/670 dead transitions. [2022-07-22 22:00:59,147 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 670 transitions, 10832 flow [2022-07-22 22:00:59,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-07-22 22:00:59,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-07-22 22:00:59,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 2778 transitions. [2022-07-22 22:00:59,149 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5576073865917303 [2022-07-22 22:00:59,149 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 2778 transitions. [2022-07-22 22:00:59,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 2778 transitions. [2022-07-22 22:00:59,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:59,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 2778 transitions. [2022-07-22 22:00:59,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 52.41509433962264) internal successors, (2778), 53 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:59,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 94.0) internal successors, (5076), 54 states have internal predecessors, (5076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:59,155 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 94.0) internal successors, (5076), 54 states have internal predecessors, (5076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:59,155 INFO L186 Difference]: Start difference. First operand has 551 places, 597 transitions, 8269 flow. Second operand 53 states and 2778 transitions. [2022-07-22 22:00:59,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 670 transitions, 10832 flow [2022-07-22 22:00:59,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 670 transitions, 10593 flow, removed 29 selfloop flow, removed 35 redundant places. [2022-07-22 22:00:59,374 INFO L242 Difference]: Finished difference. Result has 574 places, 626 transitions, 9245 flow [2022-07-22 22:00:59,374 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8064, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=9245, PETRI_PLACES=574, PETRI_TRANSITIONS=626} [2022-07-22 22:00:59,375 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 486 predicate places. [2022-07-22 22:00:59,375 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 626 transitions, 9245 flow [2022-07-22 22:00:59,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:59,375 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:59,375 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] [2022-07-22 22:00:59,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-07-22 22:00:59,375 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:59,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:59,376 INFO L85 PathProgramCache]: Analyzing trace with hash -437917612, now seen corresponding path program 77 times [2022-07-22 22:00:59,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:59,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269808123] [2022-07-22 22:00:59,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:59,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:59,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:59,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:59,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269808123] [2022-07-22 22:00:59,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269808123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:00:59,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:00:59,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:00:59,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256960692] [2022-07-22 22:00:59,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:00:59,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:00:59,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:59,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:00:59,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:00:59,656 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:00:59,657 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 626 transitions, 9245 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:59,657 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:59,657 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:00:59,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:01,149 INFO L129 PetriNetUnfolder]: 447/1420 cut-off events. [2022-07-22 22:01:01,149 INFO L130 PetriNetUnfolder]: For 28106/28106 co-relation queries the response was YES. [2022-07-22 22:01:01,164 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11350 conditions, 1420 events. 447/1420 cut-off events. For 28106/28106 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 9586 event pairs, 52 based on Foata normal form. 1/1419 useless extension candidates. Maximal degree in co-relation 11160. Up to 985 conditions per place. [2022-07-22 22:01:01,169 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 501 selfloop transitions, 102 changer transitions 16/658 dead transitions. [2022-07-22 22:01:01,169 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 658 transitions, 10784 flow [2022-07-22 22:01:01,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-22 22:01:01,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-22 22:01:01,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1846 transitions. [2022-07-22 22:01:01,170 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5610942249240122 [2022-07-22 22:01:01,170 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1846 transitions. [2022-07-22 22:01:01,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1846 transitions. [2022-07-22 22:01:01,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:01,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1846 transitions. [2022-07-22 22:01:01,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.74285714285714) internal successors, (1846), 35 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:01,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:01,174 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:01,174 INFO L186 Difference]: Start difference. First operand has 574 places, 626 transitions, 9245 flow. Second operand 35 states and 1846 transitions. [2022-07-22 22:01:01,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 658 transitions, 10784 flow [2022-07-22 22:01:01,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 658 transitions, 10326 flow, removed 134 selfloop flow, removed 38 redundant places. [2022-07-22 22:01:01,354 INFO L242 Difference]: Finished difference. Result has 577 places, 632 transitions, 9146 flow [2022-07-22 22:01:01,354 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8795, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=9146, PETRI_PLACES=577, PETRI_TRANSITIONS=632} [2022-07-22 22:01:01,354 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 489 predicate places. [2022-07-22 22:01:01,354 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 632 transitions, 9146 flow [2022-07-22 22:01:01,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:01,355 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:01,355 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] [2022-07-22 22:01:01,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-07-22 22:01:01,355 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:01,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:01,355 INFO L85 PathProgramCache]: Analyzing trace with hash 651514354, now seen corresponding path program 78 times [2022-07-22 22:01:01,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:01,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199252329] [2022-07-22 22:01:01,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:01,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:01,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:01,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:01,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199252329] [2022-07-22 22:01:01,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199252329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:01,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:01,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:01:01,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425692878] [2022-07-22 22:01:01,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:01,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:01:01,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:01,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:01:01,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:01:01,649 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:01:01,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 632 transitions, 9146 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:01,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:01,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:01:01,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:03,081 INFO L129 PetriNetUnfolder]: 455/1448 cut-off events. [2022-07-22 22:01:03,082 INFO L130 PetriNetUnfolder]: For 29343/29343 co-relation queries the response was YES. [2022-07-22 22:01:03,099 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11581 conditions, 1448 events. 455/1448 cut-off events. For 29343/29343 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 9858 event pairs, 51 based on Foata normal form. 1/1447 useless extension candidates. Maximal degree in co-relation 11382. Up to 1022 conditions per place. [2022-07-22 22:01:03,105 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 520 selfloop transitions, 89 changer transitions 26/674 dead transitions. [2022-07-22 22:01:03,105 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 674 transitions, 11042 flow [2022-07-22 22:01:03,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-22 22:01:03,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-22 22:01:03,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1951 transitions. [2022-07-22 22:01:03,106 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5609545715928694 [2022-07-22 22:01:03,106 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1951 transitions. [2022-07-22 22:01:03,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1951 transitions. [2022-07-22 22:01:03,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:03,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1951 transitions. [2022-07-22 22:01:03,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.729729729729726) internal successors, (1951), 37 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:03,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:03,109 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:03,109 INFO L186 Difference]: Start difference. First operand has 577 places, 632 transitions, 9146 flow. Second operand 37 states and 1951 transitions. [2022-07-22 22:01:03,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 674 transitions, 11042 flow [2022-07-22 22:01:03,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 674 transitions, 10814 flow, removed 28 selfloop flow, removed 29 redundant places. [2022-07-22 22:01:03,333 INFO L242 Difference]: Finished difference. Result has 588 places, 637 transitions, 9304 flow [2022-07-22 22:01:03,334 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8948, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9304, PETRI_PLACES=588, PETRI_TRANSITIONS=637} [2022-07-22 22:01:03,334 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 500 predicate places. [2022-07-22 22:01:03,334 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 637 transitions, 9304 flow [2022-07-22 22:01:03,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:03,334 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:03,334 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] [2022-07-22 22:01:03,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-07-22 22:01:03,334 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:03,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:03,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1649670576, now seen corresponding path program 79 times [2022-07-22 22:01:03,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:03,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327326413] [2022-07-22 22:01:03,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:03,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:03,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:03,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:03,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327326413] [2022-07-22 22:01:03,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327326413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:03,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:03,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-22 22:01:03,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96185736] [2022-07-22 22:01:03,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:03,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 22:01:03,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:03,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 22:01:03,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-07-22 22:01:03,640 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:01:03,640 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 637 transitions, 9304 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:03,640 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:03,640 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:01:03,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:05,022 INFO L129 PetriNetUnfolder]: 445/1423 cut-off events. [2022-07-22 22:01:05,022 INFO L130 PetriNetUnfolder]: For 28757/28757 co-relation queries the response was YES. [2022-07-22 22:01:05,040 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11321 conditions, 1423 events. 445/1423 cut-off events. For 28757/28757 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9597 event pairs, 50 based on Foata normal form. 1/1422 useless extension candidates. Maximal degree in co-relation 11119. Up to 1010 conditions per place. [2022-07-22 22:01:05,046 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 517 selfloop transitions, 74 changer transitions 26/656 dead transitions. [2022-07-22 22:01:05,046 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 656 transitions, 10620 flow [2022-07-22 22:01:05,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-22 22:01:05,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-22 22:01:05,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1783 transitions. [2022-07-22 22:01:05,047 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5578848560700876 [2022-07-22 22:01:05,047 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1783 transitions. [2022-07-22 22:01:05,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1783 transitions. [2022-07-22 22:01:05,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:05,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1783 transitions. [2022-07-22 22:01:05,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.44117647058823) internal successors, (1783), 34 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:05,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:05,050 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:05,050 INFO L186 Difference]: Start difference. First operand has 588 places, 637 transitions, 9304 flow. Second operand 34 states and 1783 transitions. [2022-07-22 22:01:05,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 656 transitions, 10620 flow [2022-07-22 22:01:05,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 583 places, 656 transitions, 10376 flow, removed 50 selfloop flow, removed 29 redundant places. [2022-07-22 22:01:05,287 INFO L242 Difference]: Finished difference. Result has 587 places, 621 transitions, 8989 flow [2022-07-22 22:01:05,287 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9066, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=8989, PETRI_PLACES=587, PETRI_TRANSITIONS=621} [2022-07-22 22:01:05,287 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 499 predicate places. [2022-07-22 22:01:05,287 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 621 transitions, 8989 flow [2022-07-22 22:01:05,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:05,287 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:05,288 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] [2022-07-22 22:01:05,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-07-22 22:01:05,288 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:05,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:05,288 INFO L85 PathProgramCache]: Analyzing trace with hash 2122350750, now seen corresponding path program 80 times [2022-07-22 22:01:05,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:05,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094258694] [2022-07-22 22:01:05,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:05,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:05,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:05,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:05,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094258694] [2022-07-22 22:01:05,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094258694] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:05,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:05,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 22:01:05,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714883822] [2022-07-22 22:01:05,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:05,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 22:01:05,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:05,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 22:01:05,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:01:05,555 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:01:05,555 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 621 transitions, 8989 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:05,555 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:05,555 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:01:05,555 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:06,775 INFO L129 PetriNetUnfolder]: 444/1411 cut-off events. [2022-07-22 22:01:06,775 INFO L130 PetriNetUnfolder]: For 27907/27907 co-relation queries the response was YES. [2022-07-22 22:01:06,793 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11220 conditions, 1411 events. 444/1411 cut-off events. For 27907/27907 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 9487 event pairs, 44 based on Foata normal form. 1/1410 useless extension candidates. Maximal degree in co-relation 11019. Up to 954 conditions per place. [2022-07-22 22:01:06,799 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 472 selfloop transitions, 122 changer transitions 17/650 dead transitions. [2022-07-22 22:01:06,799 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 650 transitions, 10533 flow [2022-07-22 22:01:06,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-22 22:01:06,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-07-22 22:01:06,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1907 transitions. [2022-07-22 22:01:06,800 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5635342789598109 [2022-07-22 22:01:06,800 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1907 transitions. [2022-07-22 22:01:06,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1907 transitions. [2022-07-22 22:01:06,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:06,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1907 transitions. [2022-07-22 22:01:06,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.97222222222222) internal successors, (1907), 36 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:06,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:06,803 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:06,803 INFO L186 Difference]: Start difference. First operand has 587 places, 621 transitions, 8989 flow. Second operand 36 states and 1907 transitions. [2022-07-22 22:01:06,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 650 transitions, 10533 flow [2022-07-22 22:01:07,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 650 transitions, 10235 flow, removed 30 selfloop flow, removed 37 redundant places. [2022-07-22 22:01:07,037 INFO L242 Difference]: Finished difference. Result has 569 places, 623 transitions, 9076 flow [2022-07-22 22:01:07,037 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8709, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=9076, PETRI_PLACES=569, PETRI_TRANSITIONS=623} [2022-07-22 22:01:07,038 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 481 predicate places. [2022-07-22 22:01:07,038 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 623 transitions, 9076 flow [2022-07-22 22:01:07,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:07,038 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:07,038 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] [2022-07-22 22:01:07,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-07-22 22:01:07,038 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:07,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:07,038 INFO L85 PathProgramCache]: Analyzing trace with hash 761559658, now seen corresponding path program 81 times [2022-07-22 22:01:07,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:07,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68080026] [2022-07-22 22:01:07,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:07,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:07,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:07,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:07,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:07,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68080026] [2022-07-22 22:01:07,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68080026] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:07,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:07,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:01:07,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112526061] [2022-07-22 22:01:07,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:07,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:01:07,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:07,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:01:07,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:01:07,319 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:01:07,320 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 623 transitions, 9076 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:07,320 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:07,320 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:01:07,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:08,766 INFO L129 PetriNetUnfolder]: 451/1411 cut-off events. [2022-07-22 22:01:08,766 INFO L130 PetriNetUnfolder]: For 28594/28594 co-relation queries the response was YES. [2022-07-22 22:01:08,784 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11452 conditions, 1411 events. 451/1411 cut-off events. For 28594/28594 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9498 event pairs, 39 based on Foata normal form. 1/1410 useless extension candidates. Maximal degree in co-relation 11258. Up to 967 conditions per place. [2022-07-22 22:01:08,790 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 485 selfloop transitions, 117 changer transitions 28/669 dead transitions. [2022-07-22 22:01:08,790 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 669 transitions, 11081 flow [2022-07-22 22:01:08,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-22 22:01:08,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-22 22:01:08,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2008 transitions. [2022-07-22 22:01:08,791 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5621500559910414 [2022-07-22 22:01:08,791 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2008 transitions. [2022-07-22 22:01:08,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2008 transitions. [2022-07-22 22:01:08,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:08,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2008 transitions. [2022-07-22 22:01:08,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.8421052631579) internal successors, (2008), 38 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:08,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:08,795 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:08,795 INFO L186 Difference]: Start difference. First operand has 569 places, 623 transitions, 9076 flow. Second operand 38 states and 2008 transitions. [2022-07-22 22:01:08,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 669 transitions, 11081 flow [2022-07-22 22:01:09,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 669 transitions, 10749 flow, removed 59 selfloop flow, removed 29 redundant places. [2022-07-22 22:01:09,017 INFO L242 Difference]: Finished difference. Result has 581 places, 626 transitions, 9175 flow [2022-07-22 22:01:09,017 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8758, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9175, PETRI_PLACES=581, PETRI_TRANSITIONS=626} [2022-07-22 22:01:09,018 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 493 predicate places. [2022-07-22 22:01:09,018 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 626 transitions, 9175 flow [2022-07-22 22:01:09,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:09,018 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:09,018 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] [2022-07-22 22:01:09,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-07-22 22:01:09,018 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:09,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:09,018 INFO L85 PathProgramCache]: Analyzing trace with hash -213158064, now seen corresponding path program 82 times [2022-07-22 22:01:09,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:09,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538182128] [2022-07-22 22:01:09,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:09,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:09,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:09,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:09,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538182128] [2022-07-22 22:01:09,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538182128] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:09,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:09,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:01:09,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768998520] [2022-07-22 22:01:09,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:09,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:01:09,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:09,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:01:09,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:01:09,296 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:01:09,296 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 626 transitions, 9175 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:09,296 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:09,296 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:01:09,296 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:10,783 INFO L129 PetriNetUnfolder]: 439/1404 cut-off events. [2022-07-22 22:01:10,783 INFO L130 PetriNetUnfolder]: For 29431/29431 co-relation queries the response was YES. [2022-07-22 22:01:10,800 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11322 conditions, 1404 events. 439/1404 cut-off events. For 29431/29431 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 9533 event pairs, 51 based on Foata normal form. 1/1403 useless extension candidates. Maximal degree in co-relation 11121. Up to 964 conditions per place. [2022-07-22 22:01:10,805 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 486 selfloop transitions, 105 changer transitions 25/655 dead transitions. [2022-07-22 22:01:10,805 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 610 places, 655 transitions, 10646 flow [2022-07-22 22:01:10,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-22 22:01:10,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-07-22 22:01:10,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1899 transitions. [2022-07-22 22:01:10,807 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5611702127659575 [2022-07-22 22:01:10,807 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1899 transitions. [2022-07-22 22:01:10,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1899 transitions. [2022-07-22 22:01:10,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:10,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1899 transitions. [2022-07-22 22:01:10,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.75) internal successors, (1899), 36 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:10,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:10,810 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:10,810 INFO L186 Difference]: Start difference. First operand has 581 places, 626 transitions, 9175 flow. Second operand 36 states and 1899 transitions. [2022-07-22 22:01:10,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 610 places, 655 transitions, 10646 flow [2022-07-22 22:01:11,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 655 transitions, 10365 flow, removed 55 selfloop flow, removed 32 redundant places. [2022-07-22 22:01:11,035 INFO L242 Difference]: Finished difference. Result has 585 places, 617 transitions, 8986 flow [2022-07-22 22:01:11,035 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8904, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=8986, PETRI_PLACES=585, PETRI_TRANSITIONS=617} [2022-07-22 22:01:11,035 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 497 predicate places. [2022-07-22 22:01:11,035 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 617 transitions, 8986 flow [2022-07-22 22:01:11,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:11,036 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:11,036 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] [2022-07-22 22:01:11,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-07-22 22:01:11,036 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:11,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:11,036 INFO L85 PathProgramCache]: Analyzing trace with hash -530566256, now seen corresponding path program 83 times [2022-07-22 22:01:11,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:11,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26508861] [2022-07-22 22:01:11,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:11,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:11,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:11,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:11,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26508861] [2022-07-22 22:01:11,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26508861] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:11,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:11,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:01:11,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038465904] [2022-07-22 22:01:11,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:11,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:01:11,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:11,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:01:11,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:01:11,298 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:01:11,299 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 617 transitions, 8986 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:11,299 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:11,299 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:01:11,299 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:12,746 INFO L129 PetriNetUnfolder]: 437/1392 cut-off events. [2022-07-22 22:01:12,746 INFO L130 PetriNetUnfolder]: For 30589/30589 co-relation queries the response was YES. [2022-07-22 22:01:12,765 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11377 conditions, 1392 events. 437/1392 cut-off events. For 30589/30589 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 9343 event pairs, 36 based on Foata normal form. 1/1391 useless extension candidates. Maximal degree in co-relation 11175. Up to 987 conditions per place. [2022-07-22 22:01:12,770 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 500 selfloop transitions, 87 changer transitions 22/648 dead transitions. [2022-07-22 22:01:12,771 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 610 places, 648 transitions, 10706 flow [2022-07-22 22:01:12,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-22 22:01:12,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-22 22:01:12,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1847 transitions. [2022-07-22 22:01:12,772 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5613981762917933 [2022-07-22 22:01:12,772 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1847 transitions. [2022-07-22 22:01:12,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1847 transitions. [2022-07-22 22:01:12,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:12,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1847 transitions. [2022-07-22 22:01:12,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.77142857142857) internal successors, (1847), 35 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:12,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:12,775 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:12,775 INFO L186 Difference]: Start difference. First operand has 585 places, 617 transitions, 8986 flow. Second operand 35 states and 1847 transitions. [2022-07-22 22:01:12,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 610 places, 648 transitions, 10706 flow [2022-07-22 22:01:13,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 648 transitions, 10386 flow, removed 26 selfloop flow, removed 38 redundant places. [2022-07-22 22:01:13,023 INFO L242 Difference]: Finished difference. Result has 579 places, 615 transitions, 8932 flow [2022-07-22 22:01:13,024 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8684, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=8932, PETRI_PLACES=579, PETRI_TRANSITIONS=615} [2022-07-22 22:01:13,024 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 491 predicate places. [2022-07-22 22:01:13,024 INFO L495 AbstractCegarLoop]: Abstraction has has 579 places, 615 transitions, 8932 flow [2022-07-22 22:01:13,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:13,024 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:13,025 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] [2022-07-22 22:01:13,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-07-22 22:01:13,025 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:13,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:13,025 INFO L85 PathProgramCache]: Analyzing trace with hash 555248976, now seen corresponding path program 84 times [2022-07-22 22:01:13,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:13,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862946779] [2022-07-22 22:01:13,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:13,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:13,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:13,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:13,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862946779] [2022-07-22 22:01:13,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862946779] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:13,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:13,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-22 22:01:13,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246348915] [2022-07-22 22:01:13,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:13,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 22:01:13,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:13,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 22:01:13,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-07-22 22:01:13,319 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:01:13,320 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 615 transitions, 8932 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:13,320 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:13,320 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:01:13,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:16,077 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 22:01:17,175 INFO L129 PetriNetUnfolder]: 432/1393 cut-off events. [2022-07-22 22:01:17,175 INFO L130 PetriNetUnfolder]: For 30565/30565 co-relation queries the response was YES. [2022-07-22 22:01:17,193 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11258 conditions, 1393 events. 432/1393 cut-off events. For 30565/30565 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9424 event pairs, 50 based on Foata normal form. 1/1392 useless extension candidates. Maximal degree in co-relation 11057. Up to 845 conditions per place. [2022-07-22 22:01:17,198 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 398 selfloop transitions, 182 changer transitions 31/650 dead transitions. [2022-07-22 22:01:17,198 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 650 transitions, 10595 flow [2022-07-22 22:01:17,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-07-22 22:01:17,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-07-22 22:01:17,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 2619 transitions. [2022-07-22 22:01:17,200 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5572340425531915 [2022-07-22 22:01:17,200 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 2619 transitions. [2022-07-22 22:01:17,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 2619 transitions. [2022-07-22 22:01:17,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:17,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 2619 transitions. [2022-07-22 22:01:17,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 52.38) internal successors, (2619), 50 states have internal predecessors, (2619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:17,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 94.0) internal successors, (4794), 51 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:17,204 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 94.0) internal successors, (4794), 51 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:17,204 INFO L186 Difference]: Start difference. First operand has 579 places, 615 transitions, 8932 flow. Second operand 50 states and 2619 transitions. [2022-07-22 22:01:17,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 650 transitions, 10595 flow [2022-07-22 22:01:17,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 650 transitions, 10309 flow, removed 55 selfloop flow, removed 33 redundant places. [2022-07-22 22:01:17,440 INFO L242 Difference]: Finished difference. Result has 594 places, 603 transitions, 8939 flow [2022-07-22 22:01:17,440 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8666, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=8939, PETRI_PLACES=594, PETRI_TRANSITIONS=603} [2022-07-22 22:01:17,440 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 506 predicate places. [2022-07-22 22:01:17,440 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 603 transitions, 8939 flow [2022-07-22 22:01:17,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:17,440 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:17,440 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] [2022-07-22 22:01:17,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-07-22 22:01:17,441 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:17,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:17,441 INFO L85 PathProgramCache]: Analyzing trace with hash 74662062, now seen corresponding path program 85 times [2022-07-22 22:01:17,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:17,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123270141] [2022-07-22 22:01:17,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:17,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:17,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:17,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:17,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123270141] [2022-07-22 22:01:17,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123270141] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:17,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:17,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 22:01:17,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657966148] [2022-07-22 22:01:17,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:17,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 22:01:17,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:17,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 22:01:17,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:01:17,682 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:01:17,682 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 603 transitions, 8939 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:17,682 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:17,682 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:01:17,682 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:19,184 INFO L129 PetriNetUnfolder]: 428/1383 cut-off events. [2022-07-22 22:01:19,184 INFO L130 PetriNetUnfolder]: For 30579/30579 co-relation queries the response was YES. [2022-07-22 22:01:19,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11396 conditions, 1383 events. 428/1383 cut-off events. For 30579/30579 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9279 event pairs, 50 based on Foata normal form. 1/1382 useless extension candidates. Maximal degree in co-relation 11195. Up to 900 conditions per place. [2022-07-22 22:01:19,207 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 438 selfloop transitions, 148 changer transitions 19/644 dead transitions. [2022-07-22 22:01:19,207 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 644 transitions, 10796 flow [2022-07-22 22:01:19,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-22 22:01:19,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-22 22:01:19,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1858 transitions. [2022-07-22 22:01:19,210 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.564741641337386 [2022-07-22 22:01:19,210 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1858 transitions. [2022-07-22 22:01:19,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1858 transitions. [2022-07-22 22:01:19,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:19,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1858 transitions. [2022-07-22 22:01:19,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.08571428571429) internal successors, (1858), 35 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:19,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:19,213 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:19,213 INFO L186 Difference]: Start difference. First operand has 594 places, 603 transitions, 8939 flow. Second operand 35 states and 1858 transitions. [2022-07-22 22:01:19,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 644 transitions, 10796 flow [2022-07-22 22:01:19,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 644 transitions, 10300 flow, removed 23 selfloop flow, removed 50 redundant places. [2022-07-22 22:01:19,446 INFO L242 Difference]: Finished difference. Result has 574 places, 608 transitions, 8970 flow [2022-07-22 22:01:19,446 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8469, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=8970, PETRI_PLACES=574, PETRI_TRANSITIONS=608} [2022-07-22 22:01:19,447 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 486 predicate places. [2022-07-22 22:01:19,447 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 608 transitions, 8970 flow [2022-07-22 22:01:19,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:19,447 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:19,447 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] [2022-07-22 22:01:19,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-07-22 22:01:19,448 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:19,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:19,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1621350444, now seen corresponding path program 86 times [2022-07-22 22:01:19,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:19,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798853181] [2022-07-22 22:01:19,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:19,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:19,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:19,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:19,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798853181] [2022-07-22 22:01:19,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798853181] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:19,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:19,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:01:19,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523866209] [2022-07-22 22:01:19,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:19,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:01:19,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:19,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:01:19,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:01:19,729 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:01:19,730 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 608 transitions, 8970 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:19,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:19,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:01:19,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:21,805 INFO L129 PetriNetUnfolder]: 424/1368 cut-off events. [2022-07-22 22:01:21,805 INFO L130 PetriNetUnfolder]: For 30137/30137 co-relation queries the response was YES. [2022-07-22 22:01:21,822 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11140 conditions, 1368 events. 424/1368 cut-off events. For 30137/30137 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 9139 event pairs, 42 based on Foata normal form. 1/1367 useless extension candidates. Maximal degree in co-relation 10942. Up to 923 conditions per place. [2022-07-22 22:01:21,827 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 458 selfloop transitions, 110 changer transitions 26/633 dead transitions. [2022-07-22 22:01:21,827 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 633 transitions, 10406 flow [2022-07-22 22:01:21,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-22 22:01:21,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-22 22:01:21,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1853 transitions. [2022-07-22 22:01:21,829 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5632218844984802 [2022-07-22 22:01:21,829 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1853 transitions. [2022-07-22 22:01:21,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1853 transitions. [2022-07-22 22:01:21,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:21,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1853 transitions. [2022-07-22 22:01:21,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.94285714285714) internal successors, (1853), 35 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:21,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:21,832 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:21,832 INFO L186 Difference]: Start difference. First operand has 574 places, 608 transitions, 8970 flow. Second operand 35 states and 1853 transitions. [2022-07-22 22:01:21,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 603 places, 633 transitions, 10406 flow [2022-07-22 22:01:22,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 633 transitions, 10142 flow, removed 43 selfloop flow, removed 31 redundant places. [2022-07-22 22:01:22,055 INFO L242 Difference]: Finished difference. Result has 580 places, 597 transitions, 8895 flow [2022-07-22 22:01:22,056 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8718, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=8895, PETRI_PLACES=580, PETRI_TRANSITIONS=597} [2022-07-22 22:01:22,056 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 492 predicate places. [2022-07-22 22:01:22,056 INFO L495 AbstractCegarLoop]: Abstraction has has 580 places, 597 transitions, 8895 flow [2022-07-22 22:01:22,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:22,057 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:22,057 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] [2022-07-22 22:01:22,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-07-22 22:01:22,057 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:22,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:22,057 INFO L85 PathProgramCache]: Analyzing trace with hash -698756946, now seen corresponding path program 87 times [2022-07-22 22:01:22,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:22,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551768350] [2022-07-22 22:01:22,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:22,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:22,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:22,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:22,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:22,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551768350] [2022-07-22 22:01:22,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551768350] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:22,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:22,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-22 22:01:22,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230181108] [2022-07-22 22:01:22,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:22,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 22:01:22,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:22,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 22:01:22,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-07-22 22:01:22,350 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:01:22,351 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 597 transitions, 8895 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:22,351 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:22,351 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:01:22,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:23,874 INFO L129 PetriNetUnfolder]: 419/1355 cut-off events. [2022-07-22 22:01:23,874 INFO L130 PetriNetUnfolder]: For 29934/29934 co-relation queries the response was YES. [2022-07-22 22:01:23,890 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11146 conditions, 1355 events. 419/1355 cut-off events. For 29934/29934 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 9048 event pairs, 40 based on Foata normal form. 1/1354 useless extension candidates. Maximal degree in co-relation 10947. Up to 962 conditions per place. [2022-07-22 22:01:23,895 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 481 selfloop transitions, 89 changer transitions 17/626 dead transitions. [2022-07-22 22:01:23,895 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 606 places, 626 transitions, 10437 flow [2022-07-22 22:01:23,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-22 22:01:23,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-22 22:01:23,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1991 transitions. [2022-07-22 22:01:23,897 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5573908174692049 [2022-07-22 22:01:23,897 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1991 transitions. [2022-07-22 22:01:23,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1991 transitions. [2022-07-22 22:01:23,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:23,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1991 transitions. [2022-07-22 22:01:23,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.39473684210526) internal successors, (1991), 38 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:23,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:23,900 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:23,900 INFO L186 Difference]: Start difference. First operand has 580 places, 597 transitions, 8895 flow. Second operand 38 states and 1991 transitions. [2022-07-22 22:01:23,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 606 places, 626 transitions, 10437 flow [2022-07-22 22:01:24,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 626 transitions, 10118 flow, removed 29 selfloop flow, removed 38 redundant places. [2022-07-22 22:01:24,119 INFO L242 Difference]: Finished difference. Result has 575 places, 599 transitions, 8897 flow [2022-07-22 22:01:24,119 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8600, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8897, PETRI_PLACES=575, PETRI_TRANSITIONS=599} [2022-07-22 22:01:24,119 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 487 predicate places. [2022-07-22 22:01:24,119 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 599 transitions, 8897 flow [2022-07-22 22:01:24,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:24,120 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:24,120 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] [2022-07-22 22:01:24,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-07-22 22:01:24,120 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:24,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:24,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1092988032, now seen corresponding path program 88 times [2022-07-22 22:01:24,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:24,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664050057] [2022-07-22 22:01:24,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:24,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:24,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:24,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:24,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664050057] [2022-07-22 22:01:24,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664050057] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:24,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:24,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:01:24,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818317005] [2022-07-22 22:01:24,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:24,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:01:24,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:24,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:01:24,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:01:24,390 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:01:24,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 599 transitions, 8897 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:24,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:24,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:01:24,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:26,571 INFO L129 PetriNetUnfolder]: 431/1392 cut-off events. [2022-07-22 22:01:26,571 INFO L130 PetriNetUnfolder]: For 31706/31706 co-relation queries the response was YES. [2022-07-22 22:01:26,588 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11495 conditions, 1392 events. 431/1392 cut-off events. For 31706/31706 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9426 event pairs, 40 based on Foata normal form. 1/1391 useless extension candidates. Maximal degree in co-relation 11298. Up to 905 conditions per place. [2022-07-22 22:01:26,594 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 434 selfloop transitions, 153 changer transitions 30/656 dead transitions. [2022-07-22 22:01:26,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 656 transitions, 11055 flow [2022-07-22 22:01:26,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-07-22 22:01:26,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-07-22 22:01:26,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 2418 transitions. [2022-07-22 22:01:26,595 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.559204440333025 [2022-07-22 22:01:26,595 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 2418 transitions. [2022-07-22 22:01:26,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 2418 transitions. [2022-07-22 22:01:26,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:26,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 2418 transitions. [2022-07-22 22:01:26,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 52.56521739130435) internal successors, (2418), 46 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:26,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 94.0) internal successors, (4418), 47 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:26,599 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 94.0) internal successors, (4418), 47 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:26,599 INFO L186 Difference]: Start difference. First operand has 575 places, 599 transitions, 8897 flow. Second operand 46 states and 2418 transitions. [2022-07-22 22:01:26,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 656 transitions, 11055 flow [2022-07-22 22:01:26,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 656 transitions, 10731 flow, removed 84 selfloop flow, removed 32 redundant places. [2022-07-22 22:01:26,845 INFO L242 Difference]: Finished difference. Result has 591 places, 611 transitions, 9267 flow [2022-07-22 22:01:26,845 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8607, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=9267, PETRI_PLACES=591, PETRI_TRANSITIONS=611} [2022-07-22 22:01:26,845 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 503 predicate places. [2022-07-22 22:01:26,845 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 611 transitions, 9267 flow [2022-07-22 22:01:26,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:26,846 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:26,846 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] [2022-07-22 22:01:26,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-07-22 22:01:26,846 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:26,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:26,846 INFO L85 PathProgramCache]: Analyzing trace with hash 676105714, now seen corresponding path program 89 times [2022-07-22 22:01:26,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:26,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409948490] [2022-07-22 22:01:26,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:26,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:27,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:27,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:27,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409948490] [2022-07-22 22:01:27,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409948490] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:27,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:27,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-22 22:01:27,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054030054] [2022-07-22 22:01:27,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:27,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 22:01:27,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:27,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 22:01:27,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-07-22 22:01:27,140 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:01:27,140 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 611 transitions, 9267 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:27,140 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:27,140 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:01:27,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:30,490 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 22:01:31,073 INFO L129 PetriNetUnfolder]: 430/1392 cut-off events. [2022-07-22 22:01:31,074 INFO L130 PetriNetUnfolder]: For 32207/32207 co-relation queries the response was YES. [2022-07-22 22:01:31,091 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11652 conditions, 1392 events. 430/1392 cut-off events. For 32207/32207 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9442 event pairs, 48 based on Foata normal form. 1/1392 useless extension candidates. Maximal degree in co-relation 11450. Up to 901 conditions per place. [2022-07-22 22:01:31,096 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 424 selfloop transitions, 167 changer transitions 26/656 dead transitions. [2022-07-22 22:01:31,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 656 transitions, 11251 flow [2022-07-22 22:01:31,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-22 22:01:31,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-07-22 22:01:31,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 2517 transitions. [2022-07-22 22:01:31,098 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.557845744680851 [2022-07-22 22:01:31,098 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 2517 transitions. [2022-07-22 22:01:31,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 2517 transitions. [2022-07-22 22:01:31,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:31,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 2517 transitions. [2022-07-22 22:01:31,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 52.4375) internal successors, (2517), 48 states have internal predecessors, (2517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:31,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 94.0) internal successors, (4606), 49 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:31,102 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 94.0) internal successors, (4606), 49 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:31,102 INFO L186 Difference]: Start difference. First operand has 591 places, 611 transitions, 9267 flow. Second operand 48 states and 2517 transitions. [2022-07-22 22:01:31,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 656 transitions, 11251 flow [2022-07-22 22:01:31,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 656 transitions, 10865 flow, removed 70 selfloop flow, removed 38 redundant places. [2022-07-22 22:01:31,350 INFO L242 Difference]: Finished difference. Result has 603 places, 615 transitions, 9487 flow [2022-07-22 22:01:31,351 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8905, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=9487, PETRI_PLACES=603, PETRI_TRANSITIONS=615} [2022-07-22 22:01:31,351 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 515 predicate places. [2022-07-22 22:01:31,351 INFO L495 AbstractCegarLoop]: Abstraction has has 603 places, 615 transitions, 9487 flow [2022-07-22 22:01:31,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:31,351 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:31,351 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] [2022-07-22 22:01:31,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-07-22 22:01:31,352 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:31,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:31,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1747269710, now seen corresponding path program 90 times [2022-07-22 22:01:31,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:31,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014185575] [2022-07-22 22:01:31,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:31,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:31,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:31,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:31,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014185575] [2022-07-22 22:01:31,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014185575] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:31,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:31,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-22 22:01:31,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529547749] [2022-07-22 22:01:31,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:31,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 22:01:31,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:31,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 22:01:31,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-07-22 22:01:31,650 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:01:31,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 615 transitions, 9487 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:31,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:31,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:01:31,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:33,086 INFO L129 PetriNetUnfolder]: 419/1352 cut-off events. [2022-07-22 22:01:33,086 INFO L130 PetriNetUnfolder]: For 30169/30169 co-relation queries the response was YES. [2022-07-22 22:01:33,104 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11395 conditions, 1352 events. 419/1352 cut-off events. For 30169/30169 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9052 event pairs, 51 based on Foata normal form. 1/1350 useless extension candidates. Maximal degree in co-relation 11187. Up to 973 conditions per place. [2022-07-22 22:01:33,109 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 495 selfloop transitions, 74 changer transitions 25/633 dead transitions. [2022-07-22 22:01:33,109 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 633 transitions, 10787 flow [2022-07-22 22:01:33,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-22 22:01:33,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-22 22:01:33,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1835 transitions. [2022-07-22 22:01:33,110 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5577507598784195 [2022-07-22 22:01:33,111 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1835 transitions. [2022-07-22 22:01:33,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1835 transitions. [2022-07-22 22:01:33,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:33,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1835 transitions. [2022-07-22 22:01:33,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.42857142857143) internal successors, (1835), 35 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:33,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:33,113 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:33,113 INFO L186 Difference]: Start difference. First operand has 603 places, 615 transitions, 9487 flow. Second operand 35 states and 1835 transitions. [2022-07-22 22:01:33,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 633 transitions, 10787 flow [2022-07-22 22:01:33,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 633 transitions, 10419 flow, removed 54 selfloop flow, removed 42 redundant places. [2022-07-22 22:01:33,364 INFO L242 Difference]: Finished difference. Result has 592 places, 599 transitions, 9058 flow [2022-07-22 22:01:33,365 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=9127, PETRI_DIFFERENCE_MINUEND_PLACES=553, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=9058, PETRI_PLACES=592, PETRI_TRANSITIONS=599} [2022-07-22 22:01:33,365 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 504 predicate places. [2022-07-22 22:01:33,365 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 599 transitions, 9058 flow [2022-07-22 22:01:33,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:33,365 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:33,365 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] [2022-07-22 22:01:33,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-07-22 22:01:33,365 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:33,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:33,366 INFO L85 PathProgramCache]: Analyzing trace with hash -928950882, now seen corresponding path program 91 times [2022-07-22 22:01:33,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:33,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888885527] [2022-07-22 22:01:33,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:33,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:33,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:33,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:33,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888885527] [2022-07-22 22:01:33,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888885527] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:33,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:33,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:01:33,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72651079] [2022-07-22 22:01:33,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:33,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:01:33,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:33,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:01:33,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:01:33,645 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:01:33,646 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 599 transitions, 9058 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:33,646 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:33,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:01:33,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:35,963 INFO L129 PetriNetUnfolder]: 417/1344 cut-off events. [2022-07-22 22:01:35,963 INFO L130 PetriNetUnfolder]: For 29396/29396 co-relation queries the response was YES. [2022-07-22 22:01:35,980 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11179 conditions, 1344 events. 417/1344 cut-off events. For 29396/29396 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 8923 event pairs, 40 based on Foata normal form. 1/1343 useless extension candidates. Maximal degree in co-relation 10972. Up to 862 conditions per place. [2022-07-22 22:01:35,984 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 414 selfloop transitions, 133 changer transitions 44/630 dead transitions. [2022-07-22 22:01:35,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 630 transitions, 10568 flow [2022-07-22 22:01:35,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-22 22:01:35,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-22 22:01:35,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2006 transitions. [2022-07-22 22:01:35,986 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5615901455767077 [2022-07-22 22:01:35,986 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2006 transitions. [2022-07-22 22:01:35,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2006 transitions. [2022-07-22 22:01:35,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:35,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2006 transitions. [2022-07-22 22:01:35,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.78947368421053) internal successors, (2006), 38 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:35,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:35,989 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:35,989 INFO L186 Difference]: Start difference. First operand has 592 places, 599 transitions, 9058 flow. Second operand 38 states and 2006 transitions. [2022-07-22 22:01:35,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 630 transitions, 10568 flow [2022-07-22 22:01:36,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 630 transitions, 10218 flow, removed 37 selfloop flow, removed 41 redundant places. [2022-07-22 22:01:36,224 INFO L242 Difference]: Finished difference. Result has 572 places, 570 transitions, 8603 flow [2022-07-22 22:01:36,224 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8736, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8603, PETRI_PLACES=572, PETRI_TRANSITIONS=570} [2022-07-22 22:01:36,225 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 484 predicate places. [2022-07-22 22:01:36,225 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 570 transitions, 8603 flow [2022-07-22 22:01:36,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:36,225 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:36,225 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] [2022-07-22 22:01:36,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-07-22 22:01:36,225 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:36,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:36,225 INFO L85 PathProgramCache]: Analyzing trace with hash 2091962840, now seen corresponding path program 92 times [2022-07-22 22:01:36,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:36,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701184211] [2022-07-22 22:01:36,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:36,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:36,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:36,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:36,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701184211] [2022-07-22 22:01:36,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701184211] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:36,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:36,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 22:01:36,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065004512] [2022-07-22 22:01:36,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:36,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 22:01:36,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:36,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 22:01:36,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:01:36,493 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:01:36,493 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 570 transitions, 8603 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:36,493 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:36,493 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:01:36,493 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:37,595 INFO L129 PetriNetUnfolder]: 395/1281 cut-off events. [2022-07-22 22:01:37,596 INFO L130 PetriNetUnfolder]: For 27985/27985 co-relation queries the response was YES. [2022-07-22 22:01:37,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10690 conditions, 1281 events. 395/1281 cut-off events. For 27985/27985 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 8427 event pairs, 49 based on Foata normal form. 1/1280 useless extension candidates. Maximal degree in co-relation 10492. Up to 877 conditions per place. [2022-07-22 22:01:37,615 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 421 selfloop transitions, 105 changer transitions 23/588 dead transitions. [2022-07-22 22:01:37,615 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 588 transitions, 9810 flow [2022-07-22 22:01:37,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-22 22:01:37,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-22 22:01:37,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1749 transitions. [2022-07-22 22:01:37,616 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2022-07-22 22:01:37,616 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1749 transitions. [2022-07-22 22:01:37,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1749 transitions. [2022-07-22 22:01:37,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:37,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1749 transitions. [2022-07-22 22:01:37,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.0) internal successors, (1749), 33 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:37,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:37,619 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:37,619 INFO L186 Difference]: Start difference. First operand has 572 places, 570 transitions, 8603 flow. Second operand 33 states and 1749 transitions. [2022-07-22 22:01:37,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 588 transitions, 9810 flow [2022-07-22 22:01:37,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 550 places, 588 transitions, 9323 flow, removed 69 selfloop flow, removed 43 redundant places. [2022-07-22 22:01:37,826 INFO L242 Difference]: Finished difference. Result has 555 places, 556 transitions, 8228 flow [2022-07-22 22:01:37,826 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8124, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=8228, PETRI_PLACES=555, PETRI_TRANSITIONS=556} [2022-07-22 22:01:37,834 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 467 predicate places. [2022-07-22 22:01:37,834 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 556 transitions, 8228 flow [2022-07-22 22:01:37,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:37,834 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:37,834 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] [2022-07-22 22:01:37,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-07-22 22:01:37,835 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:37,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:37,835 INFO L85 PathProgramCache]: Analyzing trace with hash 2109799400, now seen corresponding path program 93 times [2022-07-22 22:01:37,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:37,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189740950] [2022-07-22 22:01:37,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:37,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:38,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:38,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:38,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189740950] [2022-07-22 22:01:38,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189740950] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:38,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:38,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:01:38,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541515792] [2022-07-22 22:01:38,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:38,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:01:38,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:38,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:01:38,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:01:38,111 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:01:38,111 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 556 transitions, 8228 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:38,111 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:38,111 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:01:38,111 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:39,487 INFO L129 PetriNetUnfolder]: 395/1285 cut-off events. [2022-07-22 22:01:39,487 INFO L130 PetriNetUnfolder]: For 28445/28445 co-relation queries the response was YES. [2022-07-22 22:01:39,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10573 conditions, 1285 events. 395/1285 cut-off events. For 28445/28445 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 8429 event pairs, 41 based on Foata normal form. 1/1284 useless extension candidates. Maximal degree in co-relation 10382. Up to 886 conditions per place. [2022-07-22 22:01:39,505 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 430 selfloop transitions, 104 changer transitions 18/591 dead transitions. [2022-07-22 22:01:39,505 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 591 transitions, 9735 flow [2022-07-22 22:01:39,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-22 22:01:39,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-07-22 22:01:39,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2048 transitions. [2022-07-22 22:01:39,507 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5586470267321331 [2022-07-22 22:01:39,507 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2048 transitions. [2022-07-22 22:01:39,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2048 transitions. [2022-07-22 22:01:39,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:39,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2048 transitions. [2022-07-22 22:01:39,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 52.51282051282051) internal successors, (2048), 39 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:39,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:39,510 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:39,510 INFO L186 Difference]: Start difference. First operand has 555 places, 556 transitions, 8228 flow. Second operand 39 states and 2048 transitions. [2022-07-22 22:01:39,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 591 transitions, 9735 flow [2022-07-22 22:01:39,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 591 transitions, 9393 flow, removed 26 selfloop flow, removed 39 redundant places. [2022-07-22 22:01:39,702 INFO L242 Difference]: Finished difference. Result has 549 places, 560 transitions, 8221 flow [2022-07-22 22:01:39,702 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7902, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=8221, PETRI_PLACES=549, PETRI_TRANSITIONS=560} [2022-07-22 22:01:39,702 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 461 predicate places. [2022-07-22 22:01:39,702 INFO L495 AbstractCegarLoop]: Abstraction has has 549 places, 560 transitions, 8221 flow [2022-07-22 22:01:39,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:39,703 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:39,703 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] [2022-07-22 22:01:39,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-07-22 22:01:39,703 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:39,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:39,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1656427872, now seen corresponding path program 94 times [2022-07-22 22:01:39,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:39,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376603595] [2022-07-22 22:01:39,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:39,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:39,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:39,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:39,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376603595] [2022-07-22 22:01:39,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376603595] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:39,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:39,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-22 22:01:39,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933176447] [2022-07-22 22:01:39,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:39,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 22:01:39,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:39,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 22:01:39,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-07-22 22:01:39,991 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:01:39,991 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 560 transitions, 8221 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:39,992 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:39,992 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:01:39,992 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:43,282 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 22:01:43,573 INFO L129 PetriNetUnfolder]: 392/1276 cut-off events. [2022-07-22 22:01:43,573 INFO L130 PetriNetUnfolder]: For 26715/26715 co-relation queries the response was YES. [2022-07-22 22:01:43,586 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10428 conditions, 1276 events. 392/1276 cut-off events. For 26715/26715 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8389 event pairs, 41 based on Foata normal form. 1/1275 useless extension candidates. Maximal degree in co-relation 10241. Up to 881 conditions per place. [2022-07-22 22:01:43,591 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 429 selfloop transitions, 101 changer transitions 16/585 dead transitions. [2022-07-22 22:01:43,591 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 585 transitions, 9548 flow [2022-07-22 22:01:43,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-22 22:01:43,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-07-22 22:01:43,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1894 transitions. [2022-07-22 22:01:43,592 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5596926713947991 [2022-07-22 22:01:43,592 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1894 transitions. [2022-07-22 22:01:43,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1894 transitions. [2022-07-22 22:01:43,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:43,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1894 transitions. [2022-07-22 22:01:43,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.611111111111114) internal successors, (1894), 36 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:43,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:43,595 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:43,595 INFO L186 Difference]: Start difference. First operand has 549 places, 560 transitions, 8221 flow. Second operand 36 states and 1894 transitions. [2022-07-22 22:01:43,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 585 transitions, 9548 flow [2022-07-22 22:01:43,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 585 transitions, 9281 flow, removed 61 selfloop flow, removed 30 redundant places. [2022-07-22 22:01:43,786 INFO L242 Difference]: Finished difference. Result has 556 places, 559 transitions, 8182 flow [2022-07-22 22:01:43,786 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7962, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=8182, PETRI_PLACES=556, PETRI_TRANSITIONS=559} [2022-07-22 22:01:43,786 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 468 predicate places. [2022-07-22 22:01:43,786 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 559 transitions, 8182 flow [2022-07-22 22:01:43,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:43,786 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:43,787 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] [2022-07-22 22:01:43,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-07-22 22:01:43,787 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:43,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:43,787 INFO L85 PathProgramCache]: Analyzing trace with hash 738337764, now seen corresponding path program 95 times [2022-07-22 22:01:43,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:43,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882804148] [2022-07-22 22:01:43,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:43,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:44,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:44,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:44,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882804148] [2022-07-22 22:01:44,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882804148] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:44,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:44,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:01:44,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164485300] [2022-07-22 22:01:44,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:44,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:01:44,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:44,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:01:44,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:01:44,040 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:01:44,040 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 559 transitions, 8182 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:44,040 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:44,040 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:01:44,040 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:45,344 INFO L129 PetriNetUnfolder]: 388/1263 cut-off events. [2022-07-22 22:01:45,344 INFO L130 PetriNetUnfolder]: For 26712/26712 co-relation queries the response was YES. [2022-07-22 22:01:45,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10348 conditions, 1263 events. 388/1263 cut-off events. For 26712/26712 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 8279 event pairs, 38 based on Foata normal form. 1/1262 useless extension candidates. Maximal degree in co-relation 10158. Up to 885 conditions per place. [2022-07-22 22:01:45,361 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 436 selfloop transitions, 83 changer transitions 20/578 dead transitions. [2022-07-22 22:01:45,361 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 578 transitions, 9346 flow [2022-07-22 22:01:45,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-22 22:01:45,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-22 22:01:45,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1739 transitions. [2022-07-22 22:01:45,362 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2022-07-22 22:01:45,362 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1739 transitions. [2022-07-22 22:01:45,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1739 transitions. [2022-07-22 22:01:45,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:45,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1739 transitions. [2022-07-22 22:01:45,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.696969696969695) internal successors, (1739), 33 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:45,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:45,365 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:45,365 INFO L186 Difference]: Start difference. First operand has 556 places, 559 transitions, 8182 flow. Second operand 33 states and 1739 transitions. [2022-07-22 22:01:45,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 578 transitions, 9346 flow [2022-07-22 22:01:45,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 578 transitions, 9115 flow, removed 15 selfloop flow, removed 35 redundant places. [2022-07-22 22:01:45,545 INFO L242 Difference]: Finished difference. Result has 551 places, 549 transitions, 7995 flow [2022-07-22 22:01:45,546 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7957, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=7995, PETRI_PLACES=551, PETRI_TRANSITIONS=549} [2022-07-22 22:01:45,546 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 463 predicate places. [2022-07-22 22:01:45,546 INFO L495 AbstractCegarLoop]: Abstraction has has 551 places, 549 transitions, 7995 flow [2022-07-22 22:01:45,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:45,546 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:45,546 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] [2022-07-22 22:01:45,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-07-22 22:01:45,546 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:45,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:45,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1475427454, now seen corresponding path program 96 times [2022-07-22 22:01:45,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:45,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851090882] [2022-07-22 22:01:45,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:45,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:45,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:45,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:45,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851090882] [2022-07-22 22:01:45,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851090882] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:45,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:45,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:01:45,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654954249] [2022-07-22 22:01:45,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:45,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:01:45,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:45,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:01:45,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:01:45,809 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:01:45,809 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 549 transitions, 7995 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:45,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:45,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:01:45,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:47,057 INFO L129 PetriNetUnfolder]: 385/1239 cut-off events. [2022-07-22 22:01:47,057 INFO L130 PetriNetUnfolder]: For 25397/25397 co-relation queries the response was YES. [2022-07-22 22:01:47,068 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10194 conditions, 1239 events. 385/1239 cut-off events. For 25397/25397 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 8039 event pairs, 50 based on Foata normal form. 1/1238 useless extension candidates. Maximal degree in co-relation 10007. Up to 871 conditions per place. [2022-07-22 22:01:47,072 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 418 selfloop transitions, 85 changer transitions 26/568 dead transitions. [2022-07-22 22:01:47,072 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 568 transitions, 9139 flow [2022-07-22 22:01:47,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-22 22:01:47,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-22 22:01:47,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1741 transitions. [2022-07-22 22:01:47,073 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.561250805931657 [2022-07-22 22:01:47,073 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1741 transitions. [2022-07-22 22:01:47,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1741 transitions. [2022-07-22 22:01:47,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:47,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1741 transitions. [2022-07-22 22:01:47,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.75757575757576) internal successors, (1741), 33 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:47,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:47,076 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:47,076 INFO L186 Difference]: Start difference. First operand has 551 places, 549 transitions, 7995 flow. Second operand 33 states and 1741 transitions. [2022-07-22 22:01:47,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 568 transitions, 9139 flow [2022-07-22 22:01:47,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 568 transitions, 8863 flow, removed 16 selfloop flow, removed 37 redundant places. [2022-07-22 22:01:47,249 INFO L242 Difference]: Finished difference. Result has 534 places, 533 transitions, 7723 flow [2022-07-22 22:01:47,250 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7725, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=7723, PETRI_PLACES=534, PETRI_TRANSITIONS=533} [2022-07-22 22:01:47,250 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 446 predicate places. [2022-07-22 22:01:47,250 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 533 transitions, 7723 flow [2022-07-22 22:01:47,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:47,250 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:47,250 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] [2022-07-22 22:01:47,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-07-22 22:01:47,250 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:47,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:47,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1838222642, now seen corresponding path program 97 times [2022-07-22 22:01:47,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:47,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658994055] [2022-07-22 22:01:47,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:47,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:47,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:47,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:47,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658994055] [2022-07-22 22:01:47,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658994055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:47,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:47,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-22 22:01:47,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700206882] [2022-07-22 22:01:47,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:47,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 22:01:47,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:47,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 22:01:47,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-07-22 22:01:47,544 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:01:47,545 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 533 transitions, 7723 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:47,545 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:47,545 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:01:47,545 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:48,981 INFO L129 PetriNetUnfolder]: 379/1222 cut-off events. [2022-07-22 22:01:48,981 INFO L130 PetriNetUnfolder]: For 25317/25317 co-relation queries the response was YES. [2022-07-22 22:01:48,992 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9986 conditions, 1222 events. 379/1222 cut-off events. For 25317/25317 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7868 event pairs, 50 based on Foata normal form. 1/1221 useless extension candidates. Maximal degree in co-relation 9806. Up to 869 conditions per place. [2022-07-22 22:01:48,996 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 417 selfloop transitions, 65 changer transitions 31/552 dead transitions. [2022-07-22 22:01:48,996 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 552 transitions, 8835 flow [2022-07-22 22:01:48,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-22 22:01:48,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-22 22:01:48,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1784 transitions. [2022-07-22 22:01:48,998 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.55819774718398 [2022-07-22 22:01:48,998 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1784 transitions. [2022-07-22 22:01:48,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1784 transitions. [2022-07-22 22:01:48,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:48,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1784 transitions. [2022-07-22 22:01:48,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.470588235294116) internal successors, (1784), 34 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:49,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:49,001 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:49,001 INFO L186 Difference]: Start difference. First operand has 534 places, 533 transitions, 7723 flow. Second operand 34 states and 1784 transitions. [2022-07-22 22:01:49,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 552 transitions, 8835 flow [2022-07-22 22:01:49,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 552 transitions, 8536 flow, removed 17 selfloop flow, removed 37 redundant places. [2022-07-22 22:01:49,175 INFO L242 Difference]: Finished difference. Result has 517 places, 512 transitions, 7320 flow [2022-07-22 22:01:49,175 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7430, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=7320, PETRI_PLACES=517, PETRI_TRANSITIONS=512} [2022-07-22 22:01:49,175 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 429 predicate places. [2022-07-22 22:01:49,175 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 512 transitions, 7320 flow [2022-07-22 22:01:49,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:49,175 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:49,175 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] [2022-07-22 22:01:49,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-07-22 22:01:49,176 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:49,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:49,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1830901918, now seen corresponding path program 98 times [2022-07-22 22:01:49,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:49,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156171158] [2022-07-22 22:01:49,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:49,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:49,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:49,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:49,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156171158] [2022-07-22 22:01:49,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156171158] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:49,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:49,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 22:01:49,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631798033] [2022-07-22 22:01:49,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:49,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 22:01:49,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:49,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 22:01:49,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:01:49,434 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:01:49,434 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 512 transitions, 7320 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:49,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:49,434 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:01:49,434 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:50,546 INFO L129 PetriNetUnfolder]: 377/1207 cut-off events. [2022-07-22 22:01:50,546 INFO L130 PetriNetUnfolder]: For 24904/24904 co-relation queries the response was YES. [2022-07-22 22:01:50,562 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9757 conditions, 1207 events. 377/1207 cut-off events. For 24904/24904 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 7738 event pairs, 48 based on Foata normal form. 1/1207 useless extension candidates. Maximal degree in co-relation 9582. Up to 791 conditions per place. [2022-07-22 22:01:50,595 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 363 selfloop transitions, 126 changer transitions 20/548 dead transitions. [2022-07-22 22:01:50,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 548 transitions, 8801 flow [2022-07-22 22:01:50,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-22 22:01:50,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-22 22:01:50,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1852 transitions. [2022-07-22 22:01:50,596 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.562917933130699 [2022-07-22 22:01:50,596 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1852 transitions. [2022-07-22 22:01:50,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1852 transitions. [2022-07-22 22:01:50,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:50,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1852 transitions. [2022-07-22 22:01:50,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.91428571428571) internal successors, (1852), 35 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:50,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:50,599 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:50,599 INFO L186 Difference]: Start difference. First operand has 517 places, 512 transitions, 7320 flow. Second operand 35 states and 1852 transitions. [2022-07-22 22:01:50,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 548 transitions, 8801 flow [2022-07-22 22:01:50,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 548 transitions, 8505 flow, removed 29 selfloop flow, removed 41 redundant places. [2022-07-22 22:01:50,782 INFO L242 Difference]: Finished difference. Result has 491 places, 512 transitions, 7385 flow [2022-07-22 22:01:50,783 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7042, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=7385, PETRI_PLACES=491, PETRI_TRANSITIONS=512} [2022-07-22 22:01:50,783 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 403 predicate places. [2022-07-22 22:01:50,783 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 512 transitions, 7385 flow [2022-07-22 22:01:50,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:50,784 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:50,784 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] [2022-07-22 22:01:50,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-07-22 22:01:50,784 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:50,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:50,784 INFO L85 PathProgramCache]: Analyzing trace with hash -932541008, now seen corresponding path program 99 times [2022-07-22 22:01:50,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:50,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059299101] [2022-07-22 22:01:50,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:50,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:51,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:51,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:51,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059299101] [2022-07-22 22:01:51,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059299101] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:51,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:51,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:01:51,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486061680] [2022-07-22 22:01:51,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:51,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:01:51,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:51,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:01:51,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:01:51,063 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:01:51,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 512 transitions, 7385 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:51,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:51,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:01:51,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:52,566 INFO L129 PetriNetUnfolder]: 371/1200 cut-off events. [2022-07-22 22:01:52,566 INFO L130 PetriNetUnfolder]: For 24079/24079 co-relation queries the response was YES. [2022-07-22 22:01:52,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9539 conditions, 1200 events. 371/1200 cut-off events. For 24079/24079 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 7665 event pairs, 40 based on Foata normal form. 1/1199 useless extension candidates. Maximal degree in co-relation 9371. Up to 824 conditions per place. [2022-07-22 22:01:52,584 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 387 selfloop transitions, 79 changer transitions 28/533 dead transitions. [2022-07-22 22:01:52,585 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 533 transitions, 8514 flow [2022-07-22 22:01:52,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-22 22:01:52,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-22 22:01:52,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1788 transitions. [2022-07-22 22:01:52,586 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5594493116395495 [2022-07-22 22:01:52,586 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1788 transitions. [2022-07-22 22:01:52,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1788 transitions. [2022-07-22 22:01:52,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:52,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1788 transitions. [2022-07-22 22:01:52,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.588235294117645) internal successors, (1788), 34 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:52,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:52,589 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:52,589 INFO L186 Difference]: Start difference. First operand has 491 places, 512 transitions, 7385 flow. Second operand 34 states and 1788 transitions. [2022-07-22 22:01:52,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 533 transitions, 8514 flow [2022-07-22 22:01:52,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 533 transitions, 8128 flow, removed 80 selfloop flow, removed 32 redundant places. [2022-07-22 22:01:52,802 INFO L242 Difference]: Finished difference. Result has 492 places, 493 transitions, 6797 flow [2022-07-22 22:01:52,803 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7005, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=6797, PETRI_PLACES=492, PETRI_TRANSITIONS=493} [2022-07-22 22:01:52,803 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 404 predicate places. [2022-07-22 22:01:52,803 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 493 transitions, 6797 flow [2022-07-22 22:01:52,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:52,803 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:52,803 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] [2022-07-22 22:01:52,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-07-22 22:01:52,803 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:52,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:52,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1921398188, now seen corresponding path program 100 times [2022-07-22 22:01:52,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:52,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339809929] [2022-07-22 22:01:52,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:52,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:53,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:53,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:53,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339809929] [2022-07-22 22:01:53,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339809929] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:53,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:53,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-22 22:01:53,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235323917] [2022-07-22 22:01:53,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:53,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 22:01:53,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:53,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 22:01:53,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-07-22 22:01:53,115 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:01:53,115 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 493 transitions, 6797 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:53,116 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:53,116 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:01:53,116 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:55,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 22:01:55,544 INFO L129 PetriNetUnfolder]: 374/1203 cut-off events. [2022-07-22 22:01:55,544 INFO L130 PetriNetUnfolder]: For 23734/23734 co-relation queries the response was YES. [2022-07-22 22:01:55,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9513 conditions, 1203 events. 374/1203 cut-off events. For 23734/23734 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 7744 event pairs, 52 based on Foata normal form. 1/1202 useless extension candidates. Maximal degree in co-relation 9345. Up to 836 conditions per place. [2022-07-22 22:01:55,564 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 390 selfloop transitions, 75 changer transitions 23/527 dead transitions. [2022-07-22 22:01:55,565 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 527 transitions, 8313 flow [2022-07-22 22:01:55,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-22 22:01:55,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-22 22:01:55,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1841 transitions. [2022-07-22 22:01:55,568 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5595744680851064 [2022-07-22 22:01:55,568 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1841 transitions. [2022-07-22 22:01:55,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1841 transitions. [2022-07-22 22:01:55,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:01:55,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1841 transitions. [2022-07-22 22:01:55,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.6) internal successors, (1841), 35 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:55,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:55,571 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:55,571 INFO L186 Difference]: Start difference. First operand has 492 places, 493 transitions, 6797 flow. Second operand 35 states and 1841 transitions. [2022-07-22 22:01:55,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 527 transitions, 8313 flow [2022-07-22 22:01:55,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 527 transitions, 7993 flow, removed 46 selfloop flow, removed 34 redundant places. [2022-07-22 22:01:55,765 INFO L242 Difference]: Finished difference. Result has 481 places, 493 transitions, 6749 flow [2022-07-22 22:01:55,766 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6503, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6749, PETRI_PLACES=481, PETRI_TRANSITIONS=493} [2022-07-22 22:01:55,766 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 393 predicate places. [2022-07-22 22:01:55,766 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 493 transitions, 6749 flow [2022-07-22 22:01:55,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:55,766 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:01:55,767 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] [2022-07-22 22:01:55,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-07-22 22:01:55,767 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:01:55,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:01:55,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1599466410, now seen corresponding path program 101 times [2022-07-22 22:01:55,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:01:55,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557035484] [2022-07-22 22:01:55,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:01:55,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:01:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:01:56,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:01:56,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:01:56,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557035484] [2022-07-22 22:01:56,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557035484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:01:56,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:01:56,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:01:56,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479991754] [2022-07-22 22:01:56,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:01:56,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:01:56,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:01:56,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:01:56,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:01:56,079 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:01:56,079 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 493 transitions, 6749 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:01:56,079 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:01:56,079 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:01:56,079 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:01:58,731 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 22:02:00,239 INFO L129 PetriNetUnfolder]: 375/1203 cut-off events. [2022-07-22 22:02:00,239 INFO L130 PetriNetUnfolder]: For 25677/25677 co-relation queries the response was YES. [2022-07-22 22:02:00,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9595 conditions, 1203 events. 375/1203 cut-off events. For 25677/25677 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 7718 event pairs, 40 based on Foata normal form. 1/1201 useless extension candidates. Maximal degree in co-relation 9429. Up to 789 conditions per place. [2022-07-22 22:02:00,258 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 360 selfloop transitions, 112 changer transitions 26/537 dead transitions. [2022-07-22 22:02:00,258 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 537 transitions, 8478 flow [2022-07-22 22:02:00,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-22 22:02:00,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-22 22:02:00,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1957 transitions. [2022-07-22 22:02:00,259 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5626797009775734 [2022-07-22 22:02:00,259 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1957 transitions. [2022-07-22 22:02:00,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1957 transitions. [2022-07-22 22:02:00,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:02:00,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1957 transitions. [2022-07-22 22:02:00,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.891891891891895) internal successors, (1957), 37 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:00,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:00,263 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:00,263 INFO L186 Difference]: Start difference. First operand has 481 places, 493 transitions, 6749 flow. Second operand 37 states and 1957 transitions. [2022-07-22 22:02:00,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 537 transitions, 8478 flow [2022-07-22 22:02:00,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 537 transitions, 8234 flow, removed 59 selfloop flow, removed 32 redundant places. [2022-07-22 22:02:00,462 INFO L242 Difference]: Finished difference. Result has 490 places, 496 transitions, 6959 flow [2022-07-22 22:02:00,463 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6541, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=6959, PETRI_PLACES=490, PETRI_TRANSITIONS=496} [2022-07-22 22:02:00,463 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 402 predicate places. [2022-07-22 22:02:00,463 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 496 transitions, 6959 flow [2022-07-22 22:02:00,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:00,463 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:02:00,463 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] [2022-07-22 22:02:00,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-07-22 22:02:00,464 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:02:00,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:02:00,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1920506336, now seen corresponding path program 102 times [2022-07-22 22:02:00,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:02:00,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014360704] [2022-07-22 22:02:00,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:02:00,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:02:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:02:00,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:02:00,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:02:00,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014360704] [2022-07-22 22:02:00,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014360704] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:02:00,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:02:00,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:02:00,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907186235] [2022-07-22 22:02:00,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:02:00,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:02:00,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:02:00,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:02:00,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:02:00,722 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:02:00,722 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 496 transitions, 6959 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:00,722 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:02:00,722 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:02:00,722 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:02:01,957 INFO L129 PetriNetUnfolder]: 362/1168 cut-off events. [2022-07-22 22:02:01,957 INFO L130 PetriNetUnfolder]: For 24856/24856 co-relation queries the response was YES. [2022-07-22 22:02:01,973 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9401 conditions, 1168 events. 362/1168 cut-off events. For 24856/24856 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 7447 event pairs, 49 based on Foata normal form. 1/1167 useless extension candidates. Maximal degree in co-relation 9230. Up to 785 conditions per place. [2022-07-22 22:02:01,977 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 360 selfloop transitions, 100 changer transitions 23/522 dead transitions. [2022-07-22 22:02:01,977 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 522 transitions, 8083 flow [2022-07-22 22:02:01,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-22 22:02:01,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-22 22:02:01,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1795 transitions. [2022-07-22 22:02:01,978 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.561639549436796 [2022-07-22 22:02:01,978 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1795 transitions. [2022-07-22 22:02:01,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1795 transitions. [2022-07-22 22:02:01,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:02:01,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1795 transitions. [2022-07-22 22:02:01,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.794117647058826) internal successors, (1795), 34 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:01,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:01,982 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:01,982 INFO L186 Difference]: Start difference. First operand has 490 places, 496 transitions, 6959 flow. Second operand 34 states and 1795 transitions. [2022-07-22 22:02:01,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 522 transitions, 8083 flow [2022-07-22 22:02:02,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 522 transitions, 7780 flow, removed 79 selfloop flow, removed 29 redundant places. [2022-07-22 22:02:02,203 INFO L242 Difference]: Finished difference. Result has 492 places, 483 transitions, 6643 flow [2022-07-22 22:02:02,203 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6665, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=6643, PETRI_PLACES=492, PETRI_TRANSITIONS=483} [2022-07-22 22:02:02,203 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 404 predicate places. [2022-07-22 22:02:02,203 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 483 transitions, 6643 flow [2022-07-22 22:02:02,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:02,203 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:02:02,203 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:02:02,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-07-22 22:02:02,204 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:02:02,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:02:02,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1390155996, now seen corresponding path program 103 times [2022-07-22 22:02:02,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:02:02,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838454941] [2022-07-22 22:02:02,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:02:02,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:02:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:02:02,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:02:02,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:02:02,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838454941] [2022-07-22 22:02:02,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838454941] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:02:02,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:02:02,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-22 22:02:02,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151606576] [2022-07-22 22:02:02,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:02:02,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 22:02:02,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:02:02,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 22:02:02,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-07-22 22:02:02,495 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:02:02,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 483 transitions, 6643 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:02,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:02:02,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:02:02,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:02:04,389 INFO L129 PetriNetUnfolder]: 361/1170 cut-off events. [2022-07-22 22:02:04,389 INFO L130 PetriNetUnfolder]: For 24863/24863 co-relation queries the response was YES. [2022-07-22 22:02:04,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9270 conditions, 1170 events. 361/1170 cut-off events. For 24863/24863 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 7447 event pairs, 40 based on Foata normal form. 1/1169 useless extension candidates. Maximal degree in co-relation 9099. Up to 823 conditions per place. [2022-07-22 22:02:04,408 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 381 selfloop transitions, 69 changer transitions 19/508 dead transitions. [2022-07-22 22:02:04,408 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 508 transitions, 7770 flow [2022-07-22 22:02:04,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-22 22:02:04,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-22 22:02:04,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1732 transitions. [2022-07-22 22:02:04,409 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5583494519664732 [2022-07-22 22:02:04,409 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1732 transitions. [2022-07-22 22:02:04,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1732 transitions. [2022-07-22 22:02:04,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:02:04,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1732 transitions. [2022-07-22 22:02:04,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.484848484848484) internal successors, (1732), 33 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:04,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:04,412 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:04,412 INFO L186 Difference]: Start difference. First operand has 492 places, 483 transitions, 6643 flow. Second operand 33 states and 1732 transitions. [2022-07-22 22:02:04,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 508 transitions, 7770 flow [2022-07-22 22:02:04,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 508 transitions, 7409 flow, removed 23 selfloop flow, removed 36 redundant places. [2022-07-22 22:02:04,598 INFO L242 Difference]: Finished difference. Result has 482 places, 480 transitions, 6419 flow [2022-07-22 22:02:04,598 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6292, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=6419, PETRI_PLACES=482, PETRI_TRANSITIONS=480} [2022-07-22 22:02:04,598 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 394 predicate places. [2022-07-22 22:02:04,598 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 480 transitions, 6419 flow [2022-07-22 22:02:04,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:04,599 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:02:04,599 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] [2022-07-22 22:02:04,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-07-22 22:02:04,599 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:02:04,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:02:04,599 INFO L85 PathProgramCache]: Analyzing trace with hash -769213218, now seen corresponding path program 104 times [2022-07-22 22:02:04,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:02:04,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886137556] [2022-07-22 22:02:04,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:02:04,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:02:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:02:04,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:02:04,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:02:04,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886137556] [2022-07-22 22:02:04,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886137556] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:02:04,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:02:04,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:02:04,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964363210] [2022-07-22 22:02:04,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:02:04,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:02:04,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:02:04,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:02:04,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:02:04,881 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:02:04,881 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 480 transitions, 6419 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:04,881 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:02:04,881 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:02:04,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:02:07,473 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 22:02:08,622 INFO L129 PetriNetUnfolder]: 363/1166 cut-off events. [2022-07-22 22:02:08,622 INFO L130 PetriNetUnfolder]: For 25510/25510 co-relation queries the response was YES. [2022-07-22 22:02:08,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9292 conditions, 1166 events. 363/1166 cut-off events. For 25510/25510 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 7378 event pairs, 50 based on Foata normal form. 1/1164 useless extension candidates. Maximal degree in co-relation 9123. Up to 708 conditions per place. [2022-07-22 22:02:08,640 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 299 selfloop transitions, 155 changer transitions 27/520 dead transitions. [2022-07-22 22:02:08,640 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 520 transitions, 7975 flow [2022-07-22 22:02:08,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-22 22:02:08,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-07-22 22:02:08,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2109 transitions. [2022-07-22 22:02:08,641 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5609042553191489 [2022-07-22 22:02:08,641 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2109 transitions. [2022-07-22 22:02:08,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2109 transitions. [2022-07-22 22:02:08,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:02:08,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2109 transitions. [2022-07-22 22:02:08,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 52.725) internal successors, (2109), 40 states have internal predecessors, (2109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:08,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:08,645 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 94.0) internal successors, (3854), 41 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:08,645 INFO L186 Difference]: Start difference. First operand has 482 places, 480 transitions, 6419 flow. Second operand 40 states and 2109 transitions. [2022-07-22 22:02:08,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 520 transitions, 7975 flow [2022-07-22 22:02:08,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 520 transitions, 7720 flow, removed 23 selfloop flow, removed 37 redundant places. [2022-07-22 22:02:08,824 INFO L242 Difference]: Finished difference. Result has 485 places, 477 transitions, 6584 flow [2022-07-22 22:02:08,824 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6190, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=6584, PETRI_PLACES=485, PETRI_TRANSITIONS=477} [2022-07-22 22:02:08,824 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 397 predicate places. [2022-07-22 22:02:08,824 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 477 transitions, 6584 flow [2022-07-22 22:02:08,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:08,825 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:02:08,825 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] [2022-07-22 22:02:08,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-07-22 22:02:08,825 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:02:08,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:02:08,825 INFO L85 PathProgramCache]: Analyzing trace with hash 503866660, now seen corresponding path program 105 times [2022-07-22 22:02:08,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:02:08,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703528398] [2022-07-22 22:02:08,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:02:08,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:02:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:02:09,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:02:09,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:02:09,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703528398] [2022-07-22 22:02:09,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703528398] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:02:09,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:02:09,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-22 22:02:09,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270679357] [2022-07-22 22:02:09,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:02:09,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 22:02:09,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:02:09,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 22:02:09,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-07-22 22:02:09,152 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:02:09,152 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 477 transitions, 6584 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:09,152 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:02:09,152 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:02:09,152 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:02:12,503 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 22:02:12,974 INFO L129 PetriNetUnfolder]: 353/1132 cut-off events. [2022-07-22 22:02:12,974 INFO L130 PetriNetUnfolder]: For 25004/25004 co-relation queries the response was YES. [2022-07-22 22:02:12,988 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9090 conditions, 1132 events. 353/1132 cut-off events. For 25004/25004 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7070 event pairs, 37 based on Foata normal form. 1/1130 useless extension candidates. Maximal degree in co-relation 8921. Up to 808 conditions per place. [2022-07-22 22:02:12,992 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 372 selfloop transitions, 71 changer transitions 16/498 dead transitions. [2022-07-22 22:02:12,992 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 498 transitions, 7709 flow [2022-07-22 22:02:12,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-22 22:02:12,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-22 22:02:12,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1829 transitions. [2022-07-22 22:02:12,993 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5559270516717325 [2022-07-22 22:02:12,993 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1829 transitions. [2022-07-22 22:02:12,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1829 transitions. [2022-07-22 22:02:12,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:02:12,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1829 transitions. [2022-07-22 22:02:13,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.25714285714286) internal successors, (1829), 35 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:13,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:13,035 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:13,035 INFO L186 Difference]: Start difference. First operand has 485 places, 477 transitions, 6584 flow. Second operand 35 states and 1829 transitions. [2022-07-22 22:02:13,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 498 transitions, 7709 flow [2022-07-22 22:02:13,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 498 transitions, 7348 flow, removed 29 selfloop flow, removed 37 redundant places. [2022-07-22 22:02:13,199 INFO L242 Difference]: Finished difference. Result has 478 places, 472 transitions, 6368 flow [2022-07-22 22:02:13,200 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6239, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6368, PETRI_PLACES=478, PETRI_TRANSITIONS=472} [2022-07-22 22:02:13,200 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 390 predicate places. [2022-07-22 22:02:13,200 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 472 transitions, 6368 flow [2022-07-22 22:02:13,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:13,200 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:02:13,200 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] [2022-07-22 22:02:13,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-07-22 22:02:13,200 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:02:13,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:02:13,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1162867318, now seen corresponding path program 106 times [2022-07-22 22:02:13,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:02:13,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372450670] [2022-07-22 22:02:13,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:02:13,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:02:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:02:13,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:02:13,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:02:13,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372450670] [2022-07-22 22:02:13,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372450670] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:02:13,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:02:13,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 22:02:13,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224658221] [2022-07-22 22:02:13,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:02:13,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 22:02:13,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:02:13,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 22:02:13,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:02:13,469 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:02:13,469 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 472 transitions, 6368 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:13,469 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:02:13,469 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:02:13,469 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:02:14,540 INFO L129 PetriNetUnfolder]: 349/1122 cut-off events. [2022-07-22 22:02:14,540 INFO L130 PetriNetUnfolder]: For 22403/22403 co-relation queries the response was YES. [2022-07-22 22:02:14,554 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8791 conditions, 1122 events. 349/1122 cut-off events. For 22403/22403 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 6981 event pairs, 51 based on Foata normal form. 1/1120 useless extension candidates. Maximal degree in co-relation 8627. Up to 755 conditions per place. [2022-07-22 22:02:14,558 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 335 selfloop transitions, 75 changer transitions 48/497 dead transitions. [2022-07-22 22:02:14,558 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 497 transitions, 7435 flow [2022-07-22 22:02:14,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-22 22:02:14,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-22 22:02:14,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1744 transitions. [2022-07-22 22:02:14,559 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5622179239200515 [2022-07-22 22:02:14,559 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1744 transitions. [2022-07-22 22:02:14,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1744 transitions. [2022-07-22 22:02:14,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:02:14,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1744 transitions. [2022-07-22 22:02:14,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.84848484848485) internal successors, (1744), 33 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:14,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:14,562 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:14,562 INFO L186 Difference]: Start difference. First operand has 478 places, 472 transitions, 6368 flow. Second operand 33 states and 1744 transitions. [2022-07-22 22:02:14,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 497 transitions, 7435 flow [2022-07-22 22:02:14,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 497 transitions, 7193 flow, removed 16 selfloop flow, removed 36 redundant places. [2022-07-22 22:02:14,723 INFO L242 Difference]: Finished difference. Result has 470 places, 440 transitions, 5772 flow [2022-07-22 22:02:14,723 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6136, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=5772, PETRI_PLACES=470, PETRI_TRANSITIONS=440} [2022-07-22 22:02:14,724 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 382 predicate places. [2022-07-22 22:02:14,724 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 440 transitions, 5772 flow [2022-07-22 22:02:14,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:14,724 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:02:14,724 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] [2022-07-22 22:02:14,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-07-22 22:02:14,724 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:02:14,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:02:14,725 INFO L85 PathProgramCache]: Analyzing trace with hash -323389374, now seen corresponding path program 107 times [2022-07-22 22:02:14,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:02:14,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162683872] [2022-07-22 22:02:14,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:02:14,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:02:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:02:15,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:02:15,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:02:15,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162683872] [2022-07-22 22:02:15,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162683872] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:02:15,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:02:15,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-22 22:02:15,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674786469] [2022-07-22 22:02:15,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:02:15,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 22:02:15,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:02:15,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 22:02:15,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-07-22 22:02:15,028 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:02:15,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 440 transitions, 5772 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:15,028 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:02:15,028 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:02:15,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:02:16,342 INFO L129 PetriNetUnfolder]: 335/1059 cut-off events. [2022-07-22 22:02:16,342 INFO L130 PetriNetUnfolder]: For 21076/21076 co-relation queries the response was YES. [2022-07-22 22:02:16,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8196 conditions, 1059 events. 335/1059 cut-off events. For 21076/21076 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6399 event pairs, 50 based on Foata normal form. 1/1057 useless extension candidates. Maximal degree in co-relation 8036. Up to 757 conditions per place. [2022-07-22 22:02:16,358 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 339 selfloop transitions, 56 changer transitions 25/459 dead transitions. [2022-07-22 22:02:16,359 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 459 transitions, 6694 flow [2022-07-22 22:02:16,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-22 22:02:16,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-22 22:02:16,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1724 transitions. [2022-07-22 22:02:16,360 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5557704706640877 [2022-07-22 22:02:16,360 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1724 transitions. [2022-07-22 22:02:16,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1724 transitions. [2022-07-22 22:02:16,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:02:16,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1724 transitions. [2022-07-22 22:02:16,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.24242424242424) internal successors, (1724), 33 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:16,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:16,363 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:16,363 INFO L186 Difference]: Start difference. First operand has 470 places, 440 transitions, 5772 flow. Second operand 33 states and 1724 transitions. [2022-07-22 22:02:16,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 459 transitions, 6694 flow [2022-07-22 22:02:16,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 459 transitions, 6282 flow, removed 75 selfloop flow, removed 43 redundant places. [2022-07-22 22:02:16,515 INFO L242 Difference]: Finished difference. Result has 451 places, 425 transitions, 5367 flow [2022-07-22 22:02:16,516 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5368, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=5367, PETRI_PLACES=451, PETRI_TRANSITIONS=425} [2022-07-22 22:02:16,516 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 363 predicate places. [2022-07-22 22:02:16,516 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 425 transitions, 5367 flow [2022-07-22 22:02:16,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:16,516 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:02:16,516 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] [2022-07-22 22:02:16,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-07-22 22:02:16,516 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:02:16,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:02:16,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1562153192, now seen corresponding path program 108 times [2022-07-22 22:02:16,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:02:16,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333453507] [2022-07-22 22:02:16,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:02:16,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:02:16,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:02:16,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:02:16,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:02:16,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333453507] [2022-07-22 22:02:16,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333453507] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:02:16,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:02:16,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-22 22:02:16,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820416135] [2022-07-22 22:02:16,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:02:16,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 22:02:16,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:02:16,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 22:02:16,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-07-22 22:02:16,796 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:02:16,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 425 transitions, 5367 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:16,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:02:16,797 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:02:16,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:02:19,196 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 22:02:19,994 INFO L129 PetriNetUnfolder]: 336/1048 cut-off events. [2022-07-22 22:02:19,994 INFO L130 PetriNetUnfolder]: For 19029/19029 co-relation queries the response was YES. [2022-07-22 22:02:20,005 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7894 conditions, 1048 events. 336/1048 cut-off events. For 19029/19029 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6277 event pairs, 40 based on Foata normal form. 1/1047 useless extension candidates. Maximal degree in co-relation 7742. Up to 735 conditions per place. [2022-07-22 22:02:20,009 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 319 selfloop transitions, 76 changer transitions 17/451 dead transitions. [2022-07-22 22:02:20,009 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 451 transitions, 6466 flow [2022-07-22 22:02:20,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-22 22:02:20,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-07-22 22:02:20,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1884 transitions. [2022-07-22 22:02:20,010 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5567375886524822 [2022-07-22 22:02:20,010 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1884 transitions. [2022-07-22 22:02:20,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1884 transitions. [2022-07-22 22:02:20,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:02:20,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1884 transitions. [2022-07-22 22:02:20,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.333333333333336) internal successors, (1884), 36 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:20,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:20,014 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:20,014 INFO L186 Difference]: Start difference. First operand has 451 places, 425 transitions, 5367 flow. Second operand 36 states and 1884 transitions. [2022-07-22 22:02:20,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 451 transitions, 6466 flow [2022-07-22 22:02:20,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 451 transitions, 5970 flow, removed 88 selfloop flow, removed 34 redundant places. [2022-07-22 22:02:20,133 INFO L242 Difference]: Finished difference. Result has 428 places, 424 transitions, 5115 flow [2022-07-22 22:02:20,134 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4915, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=5115, PETRI_PLACES=428, PETRI_TRANSITIONS=424} [2022-07-22 22:02:20,134 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 340 predicate places. [2022-07-22 22:02:20,134 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 424 transitions, 5115 flow [2022-07-22 22:02:20,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:20,134 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:02:20,134 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] [2022-07-22 22:02:20,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-07-22 22:02:20,134 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:02:20,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:02:20,135 INFO L85 PathProgramCache]: Analyzing trace with hash -45751702, now seen corresponding path program 109 times [2022-07-22 22:02:20,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:02:20,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642770108] [2022-07-22 22:02:20,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:02:20,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:02:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:02:20,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:02:20,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:02:20,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642770108] [2022-07-22 22:02:20,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642770108] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:02:20,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:02:20,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-22 22:02:20,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636227357] [2022-07-22 22:02:20,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:02:20,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 22:02:20,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:02:20,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 22:02:20,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-07-22 22:02:20,429 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:02:20,430 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 424 transitions, 5115 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:20,430 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:02:20,430 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:02:20,430 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:02:21,567 INFO L129 PetriNetUnfolder]: 331/1031 cut-off events. [2022-07-22 22:02:21,568 INFO L130 PetriNetUnfolder]: For 14467/14467 co-relation queries the response was YES. [2022-07-22 22:02:21,578 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7254 conditions, 1031 events. 331/1031 cut-off events. For 14467/14467 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6113 event pairs, 51 based on Foata normal form. 1/1030 useless extension candidates. Maximal degree in co-relation 7113. Up to 730 conditions per place. [2022-07-22 22:02:21,581 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 316 selfloop transitions, 55 changer transitions 31/441 dead transitions. [2022-07-22 22:02:21,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 441 transitions, 6009 flow [2022-07-22 22:02:21,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-22 22:02:21,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-22 22:02:21,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1728 transitions. [2022-07-22 22:02:21,582 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5570599613152805 [2022-07-22 22:02:21,582 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1728 transitions. [2022-07-22 22:02:21,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1728 transitions. [2022-07-22 22:02:21,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:02:21,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1728 transitions. [2022-07-22 22:02:21,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.36363636363637) internal successors, (1728), 33 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:21,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:21,585 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:21,585 INFO L186 Difference]: Start difference. First operand has 428 places, 424 transitions, 5115 flow. Second operand 33 states and 1728 transitions. [2022-07-22 22:02:21,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 441 transitions, 6009 flow [2022-07-22 22:02:21,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 441 transitions, 5764 flow, removed 44 selfloop flow, removed 33 redundant places. [2022-07-22 22:02:21,685 INFO L242 Difference]: Finished difference. Result has 424 places, 401 transitions, 4787 flow [2022-07-22 22:02:21,685 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4878, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=4787, PETRI_PLACES=424, PETRI_TRANSITIONS=401} [2022-07-22 22:02:21,685 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 336 predicate places. [2022-07-22 22:02:21,685 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 401 transitions, 4787 flow [2022-07-22 22:02:21,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:21,686 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:02:21,686 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] [2022-07-22 22:02:21,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-07-22 22:02:21,686 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:02:21,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:02:21,686 INFO L85 PathProgramCache]: Analyzing trace with hash 70347620, now seen corresponding path program 110 times [2022-07-22 22:02:21,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:02:21,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020877671] [2022-07-22 22:02:21,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:02:21,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:02:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:02:21,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:02:21,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:02:21,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020877671] [2022-07-22 22:02:21,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020877671] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:02:21,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:02:21,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:02:21,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309126464] [2022-07-22 22:02:21,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:02:21,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:02:21,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:02:21,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:02:21,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:02:21,960 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:02:21,960 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 401 transitions, 4787 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:21,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:02:21,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:02:21,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:02:24,448 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 22:02:27,179 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 22:02:27,533 INFO L129 PetriNetUnfolder]: 328/1027 cut-off events. [2022-07-22 22:02:27,533 INFO L130 PetriNetUnfolder]: For 13806/13806 co-relation queries the response was YES. [2022-07-22 22:02:27,543 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7089 conditions, 1027 events. 328/1027 cut-off events. For 13806/13806 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6113 event pairs, 42 based on Foata normal form. 1/1026 useless extension candidates. Maximal degree in co-relation 6949. Up to 688 conditions per place. [2022-07-22 22:02:27,546 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 282 selfloop transitions, 89 changer transitions 19/429 dead transitions. [2022-07-22 22:02:27,546 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 429 transitions, 5785 flow [2022-07-22 22:02:27,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-22 22:02:27,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-22 22:02:27,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1691 transitions. [2022-07-22 22:02:27,548 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5621675531914894 [2022-07-22 22:02:27,548 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1691 transitions. [2022-07-22 22:02:27,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1691 transitions. [2022-07-22 22:02:27,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:02:27,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1691 transitions. [2022-07-22 22:02:27,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.84375) internal successors, (1691), 32 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:27,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:27,551 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:27,551 INFO L186 Difference]: Start difference. First operand has 424 places, 401 transitions, 4787 flow. Second operand 32 states and 1691 transitions. [2022-07-22 22:02:27,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 429 transitions, 5785 flow [2022-07-22 22:02:27,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 429 transitions, 5478 flow, removed 31 selfloop flow, removed 33 redundant places. [2022-07-22 22:02:27,653 INFO L242 Difference]: Finished difference. Result has 397 places, 398 transitions, 4671 flow [2022-07-22 22:02:27,653 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4492, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=4671, PETRI_PLACES=397, PETRI_TRANSITIONS=398} [2022-07-22 22:02:27,653 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 309 predicate places. [2022-07-22 22:02:27,653 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 398 transitions, 4671 flow [2022-07-22 22:02:27,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:27,653 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:02:27,653 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] [2022-07-22 22:02:27,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-07-22 22:02:27,654 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:02:27,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:02:27,654 INFO L85 PathProgramCache]: Analyzing trace with hash 717133510, now seen corresponding path program 111 times [2022-07-22 22:02:27,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:02:27,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975910916] [2022-07-22 22:02:27,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:02:27,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:02:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:02:27,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:02:27,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:02:27,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975910916] [2022-07-22 22:02:27,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975910916] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:02:27,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:02:27,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:02:27,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764856595] [2022-07-22 22:02:27,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:02:27,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:02:27,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:02:27,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:02:27,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:02:27,935 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:02:27,936 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 398 transitions, 4671 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:27,936 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:02:27,936 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:02:27,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:02:29,522 INFO L129 PetriNetUnfolder]: 345/1071 cut-off events. [2022-07-22 22:02:29,522 INFO L130 PetriNetUnfolder]: For 13735/13735 co-relation queries the response was YES. [2022-07-22 22:02:29,533 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7321 conditions, 1071 events. 345/1071 cut-off events. For 13735/13735 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 6428 event pairs, 53 based on Foata normal form. 1/1070 useless extension candidates. Maximal degree in co-relation 7188. Up to 663 conditions per place. [2022-07-22 22:02:29,536 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 275 selfloop transitions, 132 changer transitions 27/473 dead transitions. [2022-07-22 22:02:29,536 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 473 transitions, 6521 flow [2022-07-22 22:02:29,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-22 22:02:29,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-22 22:02:29,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1746 transitions. [2022-07-22 22:02:29,538 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.562862669245648 [2022-07-22 22:02:29,538 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1746 transitions. [2022-07-22 22:02:29,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1746 transitions. [2022-07-22 22:02:29,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:02:29,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1746 transitions. [2022-07-22 22:02:29,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.90909090909091) internal successors, (1746), 33 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:29,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:29,541 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:29,541 INFO L186 Difference]: Start difference. First operand has 397 places, 398 transitions, 4671 flow. Second operand 33 states and 1746 transitions. [2022-07-22 22:02:29,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 473 transitions, 6521 flow [2022-07-22 22:02:29,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 473 transitions, 6237 flow, removed 18 selfloop flow, removed 32 redundant places. [2022-07-22 22:02:29,629 INFO L242 Difference]: Finished difference. Result has 398 places, 423 transitions, 5167 flow [2022-07-22 22:02:29,629 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4421, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=5167, PETRI_PLACES=398, PETRI_TRANSITIONS=423} [2022-07-22 22:02:29,629 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 310 predicate places. [2022-07-22 22:02:29,629 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 423 transitions, 5167 flow [2022-07-22 22:02:29,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:29,630 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:02:29,630 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] [2022-07-22 22:02:29,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-07-22 22:02:29,630 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:02:29,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:02:29,630 INFO L85 PathProgramCache]: Analyzing trace with hash -921559062, now seen corresponding path program 112 times [2022-07-22 22:02:29,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:02:29,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707089723] [2022-07-22 22:02:29,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:02:29,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:02:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:02:29,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:02:29,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:02:29,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707089723] [2022-07-22 22:02:29,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707089723] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:02:29,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:02:29,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-22 22:02:29,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276842605] [2022-07-22 22:02:29,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:02:29,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 22:02:29,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:02:29,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 22:02:29,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-07-22 22:02:29,923 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:02:29,924 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 423 transitions, 5167 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:29,924 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:02:29,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:02:29,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:02:31,252 INFO L129 PetriNetUnfolder]: 337/1045 cut-off events. [2022-07-22 22:02:31,252 INFO L130 PetriNetUnfolder]: For 14225/14225 co-relation queries the response was YES. [2022-07-22 22:02:31,263 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7317 conditions, 1045 events. 337/1045 cut-off events. For 14225/14225 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6205 event pairs, 53 based on Foata normal form. 1/1044 useless extension candidates. Maximal degree in co-relation 7185. Up to 612 conditions per place. [2022-07-22 22:02:31,288 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 237 selfloop transitions, 165 changer transitions 20/461 dead transitions. [2022-07-22 22:02:31,288 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 461 transitions, 6568 flow [2022-07-22 22:02:31,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-22 22:02:31,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-22 22:02:31,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1999 transitions. [2022-07-22 22:02:31,290 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5596304591265397 [2022-07-22 22:02:31,290 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1999 transitions. [2022-07-22 22:02:31,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1999 transitions. [2022-07-22 22:02:31,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:02:31,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1999 transitions. [2022-07-22 22:02:31,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.60526315789474) internal successors, (1999), 38 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:31,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:31,293 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:31,293 INFO L186 Difference]: Start difference. First operand has 398 places, 423 transitions, 5167 flow. Second operand 38 states and 1999 transitions. [2022-07-22 22:02:31,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 461 transitions, 6568 flow [2022-07-22 22:02:31,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 461 transitions, 6329 flow, removed 62 selfloop flow, removed 23 redundant places. [2022-07-22 22:02:31,394 INFO L242 Difference]: Finished difference. Result has 414 places, 426 transitions, 5465 flow [2022-07-22 22:02:31,394 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4948, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=5465, PETRI_PLACES=414, PETRI_TRANSITIONS=426} [2022-07-22 22:02:31,394 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 326 predicate places. [2022-07-22 22:02:31,394 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 426 transitions, 5465 flow [2022-07-22 22:02:31,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:31,394 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:02:31,394 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] [2022-07-22 22:02:31,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-07-22 22:02:31,395 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:02:31,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:02:31,395 INFO L85 PathProgramCache]: Analyzing trace with hash 777886238, now seen corresponding path program 113 times [2022-07-22 22:02:31,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:02:31,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566861637] [2022-07-22 22:02:31,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:02:31,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:02:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:02:31,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:02:31,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:02:31,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566861637] [2022-07-22 22:02:31,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566861637] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:02:31,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:02:31,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:02:31,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534193934] [2022-07-22 22:02:31,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:02:31,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:02:31,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:02:31,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:02:31,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:02:31,676 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:02:31,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 426 transitions, 5465 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:31,677 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:02:31,677 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:02:31,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:02:32,855 INFO L129 PetriNetUnfolder]: 337/1031 cut-off events. [2022-07-22 22:02:32,855 INFO L130 PetriNetUnfolder]: For 14099/14099 co-relation queries the response was YES. [2022-07-22 22:02:32,865 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7398 conditions, 1031 events. 337/1031 cut-off events. For 14099/14099 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6006 event pairs, 52 based on Foata normal form. 1/1030 useless extension candidates. Maximal degree in co-relation 7264. Up to 660 conditions per place. [2022-07-22 22:02:32,869 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 280 selfloop transitions, 136 changer transitions 16/471 dead transitions. [2022-07-22 22:02:32,869 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 471 transitions, 7039 flow [2022-07-22 22:02:32,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-22 22:02:32,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-22 22:02:32,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1797 transitions. [2022-07-22 22:02:32,870 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5622653316645807 [2022-07-22 22:02:32,870 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1797 transitions. [2022-07-22 22:02:32,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1797 transitions. [2022-07-22 22:02:32,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:02:32,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1797 transitions. [2022-07-22 22:02:32,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.85294117647059) internal successors, (1797), 34 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:32,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:32,873 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:32,873 INFO L186 Difference]: Start difference. First operand has 414 places, 426 transitions, 5465 flow. Second operand 34 states and 1797 transitions. [2022-07-22 22:02:32,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 471 transitions, 7039 flow [2022-07-22 22:02:32,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 471 transitions, 6649 flow, removed 77 selfloop flow, removed 35 redundant places. [2022-07-22 22:02:32,983 INFO L242 Difference]: Finished difference. Result has 414 places, 438 transitions, 5758 flow [2022-07-22 22:02:32,983 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5126, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=5758, PETRI_PLACES=414, PETRI_TRANSITIONS=438} [2022-07-22 22:02:32,983 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 326 predicate places. [2022-07-22 22:02:32,983 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 438 transitions, 5758 flow [2022-07-22 22:02:32,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:32,983 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:02:32,983 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] [2022-07-22 22:02:32,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-07-22 22:02:32,984 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:02:32,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:02:32,984 INFO L85 PathProgramCache]: Analyzing trace with hash 109761226, now seen corresponding path program 114 times [2022-07-22 22:02:32,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:02:32,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318028469] [2022-07-22 22:02:32,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:02:32,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:02:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:02:33,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:02:33,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:02:33,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318028469] [2022-07-22 22:02:33,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318028469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:02:33,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:02:33,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-22 22:02:33,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371516197] [2022-07-22 22:02:33,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:02:33,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 22:02:33,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:02:33,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 22:02:33,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-07-22 22:02:33,274 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:02:33,275 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 438 transitions, 5758 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:33,275 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:02:33,275 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:02:33,275 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:02:36,936 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 22:02:37,432 INFO L129 PetriNetUnfolder]: 339/1041 cut-off events. [2022-07-22 22:02:37,432 INFO L130 PetriNetUnfolder]: For 13577/13577 co-relation queries the response was YES. [2022-07-22 22:02:37,440 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7474 conditions, 1041 events. 339/1041 cut-off events. For 13577/13577 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6115 event pairs, 43 based on Foata normal form. 1/1040 useless extension candidates. Maximal degree in co-relation 7340. Up to 690 conditions per place. [2022-07-22 22:02:37,443 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 307 selfloop transitions, 111 changer transitions 16/473 dead transitions. [2022-07-22 22:02:37,443 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 473 transitions, 7131 flow [2022-07-22 22:02:37,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-22 22:02:37,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-07-22 22:02:37,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2048 transitions. [2022-07-22 22:02:37,444 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5586470267321331 [2022-07-22 22:02:37,444 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2048 transitions. [2022-07-22 22:02:37,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2048 transitions. [2022-07-22 22:02:37,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:02:37,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2048 transitions. [2022-07-22 22:02:37,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 52.51282051282051) internal successors, (2048), 39 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:37,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:37,448 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:37,448 INFO L186 Difference]: Start difference. First operand has 414 places, 438 transitions, 5758 flow. Second operand 39 states and 2048 transitions. [2022-07-22 22:02:37,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 473 transitions, 7131 flow [2022-07-22 22:02:37,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 473 transitions, 6807 flow, removed 89 selfloop flow, removed 27 redundant places. [2022-07-22 22:02:37,549 INFO L242 Difference]: Finished difference. Result has 427 places, 445 transitions, 5864 flow [2022-07-22 22:02:37,550 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5458, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=5864, PETRI_PLACES=427, PETRI_TRANSITIONS=445} [2022-07-22 22:02:37,550 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 339 predicate places. [2022-07-22 22:02:37,550 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 445 transitions, 5864 flow [2022-07-22 22:02:37,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:37,550 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:02:37,550 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] [2022-07-22 22:02:37,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-07-22 22:02:37,551 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:02:37,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:02:37,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1687323666, now seen corresponding path program 115 times [2022-07-22 22:02:37,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:02:37,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337279267] [2022-07-22 22:02:37,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:02:37,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:02:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:02:37,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:02:37,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:02:37,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337279267] [2022-07-22 22:02:37,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337279267] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:02:37,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:02:37,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-22 22:02:37,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219143937] [2022-07-22 22:02:37,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:02:37,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 22:02:37,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:02:37,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 22:02:37,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-07-22 22:02:37,855 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:02:37,856 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 445 transitions, 5864 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:37,856 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:02:37,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:02:37,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:02:39,930 INFO L129 PetriNetUnfolder]: 342/1063 cut-off events. [2022-07-22 22:02:39,930 INFO L130 PetriNetUnfolder]: For 13618/13618 co-relation queries the response was YES. [2022-07-22 22:02:39,940 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7624 conditions, 1063 events. 342/1063 cut-off events. For 13618/13618 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6338 event pairs, 47 based on Foata normal form. 1/1062 useless extension candidates. Maximal degree in co-relation 7486. Up to 657 conditions per place. [2022-07-22 22:02:39,944 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 293 selfloop transitions, 147 changer transitions 17/496 dead transitions. [2022-07-22 22:02:39,944 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 496 transitions, 7560 flow [2022-07-22 22:02:39,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-22 22:02:39,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-22 22:02:39,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1995 transitions. [2022-07-22 22:02:39,945 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2022-07-22 22:02:39,945 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1995 transitions. [2022-07-22 22:02:39,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1995 transitions. [2022-07-22 22:02:39,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:02:39,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1995 transitions. [2022-07-22 22:02:39,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.5) internal successors, (1995), 38 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:39,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:39,948 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:39,948 INFO L186 Difference]: Start difference. First operand has 427 places, 445 transitions, 5864 flow. Second operand 38 states and 1995 transitions. [2022-07-22 22:02:39,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 496 transitions, 7560 flow [2022-07-22 22:02:40,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 496 transitions, 7265 flow, removed 77 selfloop flow, removed 30 redundant places. [2022-07-22 22:02:40,053 INFO L242 Difference]: Finished difference. Result has 436 places, 459 transitions, 6235 flow [2022-07-22 22:02:40,053 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5587, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=6235, PETRI_PLACES=436, PETRI_TRANSITIONS=459} [2022-07-22 22:02:40,054 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 348 predicate places. [2022-07-22 22:02:40,054 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 459 transitions, 6235 flow [2022-07-22 22:02:40,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:40,054 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:02:40,054 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] [2022-07-22 22:02:40,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-07-22 22:02:40,054 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:02:40,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:02:40,054 INFO L85 PathProgramCache]: Analyzing trace with hash -747468724, now seen corresponding path program 116 times [2022-07-22 22:02:40,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:02:40,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638241576] [2022-07-22 22:02:40,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:02:40,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:02:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:02:40,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:02:40,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:02:40,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638241576] [2022-07-22 22:02:40,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638241576] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:02:40,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:02:40,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-22 22:02:40,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399986379] [2022-07-22 22:02:40,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:02:40,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 22:02:40,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:02:40,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 22:02:40,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-07-22 22:02:40,343 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:02:40,343 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 459 transitions, 6235 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:40,343 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:02:40,343 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:02:40,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:02:41,823 INFO L129 PetriNetUnfolder]: 347/1073 cut-off events. [2022-07-22 22:02:41,823 INFO L130 PetriNetUnfolder]: For 14024/14024 co-relation queries the response was YES. [2022-07-22 22:02:41,834 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7818 conditions, 1073 events. 347/1073 cut-off events. For 14024/14024 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6434 event pairs, 55 based on Foata normal form. 1/1072 useless extension candidates. Maximal degree in co-relation 7677. Up to 714 conditions per place. [2022-07-22 22:02:41,837 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 326 selfloop transitions, 104 changer transitions 27/496 dead transitions. [2022-07-22 22:02:41,837 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 496 transitions, 7590 flow [2022-07-22 22:02:41,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-22 22:02:41,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-22 22:02:41,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1996 transitions. [2022-07-22 22:02:41,839 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5587905935050392 [2022-07-22 22:02:41,839 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1996 transitions. [2022-07-22 22:02:41,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1996 transitions. [2022-07-22 22:02:41,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:02:41,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1996 transitions. [2022-07-22 22:02:41,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.526315789473685) internal successors, (1996), 38 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:41,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:41,842 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:41,842 INFO L186 Difference]: Start difference. First operand has 436 places, 459 transitions, 6235 flow. Second operand 38 states and 1996 transitions. [2022-07-22 22:02:41,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 496 transitions, 7590 flow [2022-07-22 22:02:41,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 496 transitions, 7311 flow, removed 58 selfloop flow, removed 31 redundant places. [2022-07-22 22:02:41,960 INFO L242 Difference]: Finished difference. Result has 444 places, 455 transitions, 6196 flow [2022-07-22 22:02:41,960 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5984, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=6196, PETRI_PLACES=444, PETRI_TRANSITIONS=455} [2022-07-22 22:02:41,960 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 356 predicate places. [2022-07-22 22:02:41,960 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 455 transitions, 6196 flow [2022-07-22 22:02:41,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:41,960 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:02:41,960 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] [2022-07-22 22:02:41,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-07-22 22:02:41,961 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:02:41,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:02:41,961 INFO L85 PathProgramCache]: Analyzing trace with hash -396453842, now seen corresponding path program 117 times [2022-07-22 22:02:41,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:02:41,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996503600] [2022-07-22 22:02:41,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:02:41,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:02:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:02:42,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:02:42,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:02:42,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996503600] [2022-07-22 22:02:42,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996503600] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:02:42,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:02:42,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:02:42,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156766909] [2022-07-22 22:02:42,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:02:42,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:02:42,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:02:42,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:02:42,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:02:42,256 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:02:42,257 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 455 transitions, 6196 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:42,257 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:02:42,257 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:02:42,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:02:43,657 INFO L129 PetriNetUnfolder]: 343/1068 cut-off events. [2022-07-22 22:02:43,657 INFO L130 PetriNetUnfolder]: For 13907/13907 co-relation queries the response was YES. [2022-07-22 22:02:43,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7821 conditions, 1068 events. 343/1068 cut-off events. For 13907/13907 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6423 event pairs, 42 based on Foata normal form. 1/1067 useless extension candidates. Maximal degree in co-relation 7676. Up to 680 conditions per place. [2022-07-22 22:02:43,673 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 302 selfloop transitions, 136 changer transitions 19/496 dead transitions. [2022-07-22 22:02:43,673 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 496 transitions, 7615 flow [2022-07-22 22:02:43,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-22 22:02:43,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-22 22:02:43,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1850 transitions. [2022-07-22 22:02:43,675 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5623100303951368 [2022-07-22 22:02:43,675 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1850 transitions. [2022-07-22 22:02:43,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1850 transitions. [2022-07-22 22:02:43,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:02:43,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1850 transitions. [2022-07-22 22:02:43,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.857142857142854) internal successors, (1850), 35 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:43,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:43,678 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:43,678 INFO L186 Difference]: Start difference. First operand has 444 places, 455 transitions, 6196 flow. Second operand 35 states and 1850 transitions. [2022-07-22 22:02:43,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 496 transitions, 7615 flow [2022-07-22 22:02:43,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 496 transitions, 7294 flow, removed 45 selfloop flow, removed 36 redundant places. [2022-07-22 22:02:43,802 INFO L242 Difference]: Finished difference. Result has 439 places, 460 transitions, 6329 flow [2022-07-22 22:02:43,802 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5901, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6329, PETRI_PLACES=439, PETRI_TRANSITIONS=460} [2022-07-22 22:02:43,813 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 351 predicate places. [2022-07-22 22:02:43,813 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 460 transitions, 6329 flow [2022-07-22 22:02:43,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:43,814 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:02:43,814 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] [2022-07-22 22:02:43,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-07-22 22:02:43,814 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:02:43,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:02:43,814 INFO L85 PathProgramCache]: Analyzing trace with hash 627276824, now seen corresponding path program 118 times [2022-07-22 22:02:43,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:02:43,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987320656] [2022-07-22 22:02:43,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:02:43,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:02:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:02:44,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:02:44,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:02:44,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987320656] [2022-07-22 22:02:44,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987320656] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:02:44,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:02:44,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-22 22:02:44,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705988687] [2022-07-22 22:02:44,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:02:44,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 22:02:44,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:02:44,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 22:02:44,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-07-22 22:02:44,128 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:02:44,129 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 460 transitions, 6329 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:44,129 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:02:44,129 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:02:44,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:02:45,535 INFO L129 PetriNetUnfolder]: 342/1064 cut-off events. [2022-07-22 22:02:45,535 INFO L130 PetriNetUnfolder]: For 13433/13433 co-relation queries the response was YES. [2022-07-22 22:02:45,546 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7807 conditions, 1064 events. 342/1064 cut-off events. For 13433/13433 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6368 event pairs, 57 based on Foata normal form. 1/1063 useless extension candidates. Maximal degree in co-relation 7662. Up to 717 conditions per place. [2022-07-22 22:02:45,549 INFO L132 encePairwiseOnDemand]: 64/94 looper letters, 329 selfloop transitions, 104 changer transitions 22/494 dead transitions. [2022-07-22 22:02:45,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 494 transitions, 7626 flow [2022-07-22 22:02:45,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-22 22:02:45,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-07-22 22:02:45,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2140 transitions. [2022-07-22 22:02:45,551 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5552672548002076 [2022-07-22 22:02:45,551 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2140 transitions. [2022-07-22 22:02:45,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2140 transitions. [2022-07-22 22:02:45,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:02:45,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2140 transitions. [2022-07-22 22:02:45,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 52.19512195121951) internal successors, (2140), 41 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:45,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:45,555 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:45,555 INFO L186 Difference]: Start difference. First operand has 439 places, 460 transitions, 6329 flow. Second operand 41 states and 2140 transitions. [2022-07-22 22:02:45,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 494 transitions, 7626 flow [2022-07-22 22:02:45,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 494 transitions, 7386 flow, removed 35 selfloop flow, removed 29 redundant places. [2022-07-22 22:02:45,676 INFO L242 Difference]: Finished difference. Result has 452 places, 460 transitions, 6414 flow [2022-07-22 22:02:45,676 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6107, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=6414, PETRI_PLACES=452, PETRI_TRANSITIONS=460} [2022-07-22 22:02:45,676 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 364 predicate places. [2022-07-22 22:02:45,676 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 460 transitions, 6414 flow [2022-07-22 22:02:45,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:45,676 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:02:45,676 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] [2022-07-22 22:02:45,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-07-22 22:02:45,677 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:02:45,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:02:45,677 INFO L85 PathProgramCache]: Analyzing trace with hash 2035590490, now seen corresponding path program 119 times [2022-07-22 22:02:45,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:02:45,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094114405] [2022-07-22 22:02:45,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:02:45,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:02:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:02:45,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:02:45,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:02:45,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094114405] [2022-07-22 22:02:45,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094114405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:02:45,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:02:45,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-22 22:02:45,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914003896] [2022-07-22 22:02:45,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:02:45,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 22:02:45,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:02:45,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 22:02:45,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-07-22 22:02:45,968 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-07-22 22:02:45,968 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 460 transitions, 6414 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:02:45,968 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:02:45,968 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-07-22 22:02:45,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand