./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79419a4ba87d66b20bd1eac3a57771b6df78d8c052d6832c2c2f61b321d58321 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:23:34,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:23:34,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:23:34,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:23:34,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:23:34,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:23:34,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:23:34,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:23:34,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:23:34,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:23:34,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:23:34,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:23:34,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:23:34,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:23:34,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:23:34,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:23:34,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:23:34,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:23:34,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:23:34,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:23:34,980 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:23:34,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:23:34,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:23:34,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:23:34,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:23:34,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:23:34,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:23:34,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:23:34,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:23:34,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:23:34,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:23:34,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:23:34,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:23:34,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:23:34,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:23:34,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:23:34,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:23:34,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:23:34,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:23:34,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:23:34,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:23:34,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:23:34,999 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:23:35,020 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:23:35,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:23:35,021 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:23:35,021 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:23:35,022 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:23:35,022 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:23:35,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:23:35,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:23:35,023 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:23:35,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:23:35,024 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:23:35,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:23:35,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:23:35,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:23:35,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:23:35,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:23:35,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:23:35,025 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:23:35,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:23:35,025 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:23:35,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:23:35,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:23:35,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:23:35,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:23:35,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:23:35,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:23:35,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:23:35,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:23:35,026 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:23:35,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:23:35,027 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:23:35,027 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:23:35,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:23:35,027 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79419a4ba87d66b20bd1eac3a57771b6df78d8c052d6832c2c2f61b321d58321 [2022-07-12 10:23:35,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:23:35,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:23:35,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:23:35,246 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:23:35,247 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:23:35,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c [2022-07-12 10:23:35,286 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d494393fb/3abeb90d428d44d496900473fbd05378/FLAGccbd24649 [2022-07-12 10:23:35,629 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:23:35,629 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c [2022-07-12 10:23:35,634 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d494393fb/3abeb90d428d44d496900473fbd05378/FLAGccbd24649 [2022-07-12 10:23:35,645 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d494393fb/3abeb90d428d44d496900473fbd05378 [2022-07-12 10:23:35,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:23:35,649 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:23:35,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:23:35,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:23:35,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:23:35,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:23:35" (1/1) ... [2022-07-12 10:23:35,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1311341e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:35, skipping insertion in model container [2022-07-12 10:23:35,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:23:35" (1/1) ... [2022-07-12 10:23:35,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:23:35,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:23:35,818 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c[2628,2641] [2022-07-12 10:23:35,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:23:35,850 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:23:35,873 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c[2628,2641] [2022-07-12 10:23:35,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:23:35,886 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:23:35,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:35 WrapperNode [2022-07-12 10:23:35,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:23:35,887 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:23:35,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:23:35,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:23:35,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:35" (1/1) ... [2022-07-12 10:23:35,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:35" (1/1) ... [2022-07-12 10:23:35,934 INFO L137 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 128 [2022-07-12 10:23:35,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:23:35,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:23:35,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:23:35,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:23:35,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:35" (1/1) ... [2022-07-12 10:23:35,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:35" (1/1) ... [2022-07-12 10:23:35,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:35" (1/1) ... [2022-07-12 10:23:35,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:35" (1/1) ... [2022-07-12 10:23:35,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:35" (1/1) ... [2022-07-12 10:23:35,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:35" (1/1) ... [2022-07-12 10:23:35,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:35" (1/1) ... [2022-07-12 10:23:35,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:23:35,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:23:35,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:23:35,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:23:35,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:35" (1/1) ... [2022-07-12 10:23:35,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:23:35,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:23:35,994 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) [2022-07-12 10:23:35,996 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 [2022-07-12 10:23:36,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:23:36,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:23:36,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:23:36,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:23:36,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:23:36,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:23:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:23:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:23:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:23:36,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:23:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:23:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:23:36,019 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:23:36,069 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:23:36,070 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:23:36,256 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:23:36,263 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:23:36,263 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:23:36,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:23:36 BoogieIcfgContainer [2022-07-12 10:23:36,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:23:36,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:23:36,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:23:36,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:23:36,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:23:35" (1/3) ... [2022-07-12 10:23:36,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130195b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:23:36, skipping insertion in model container [2022-07-12 10:23:36,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:35" (2/3) ... [2022-07-12 10:23:36,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130195b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:23:36, skipping insertion in model container [2022-07-12 10:23:36,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:23:36" (3/3) ... [2022-07-12 10:23:36,288 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-exp-term-symm.wvr.c [2022-07-12 10:23:36,291 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:23:36,297 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:23:36,297 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:23:36,298 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:23:36,407 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-12 10:23:36,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 168 places, 174 transitions, 364 flow [2022-07-12 10:23:36,537 INFO L129 PetriNetUnfolder]: 13/172 cut-off events. [2022-07-12 10:23:36,538 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 10:23:36,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 172 events. 13/172 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 283 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-07-12 10:23:36,543 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 174 transitions, 364 flow [2022-07-12 10:23:36,552 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 163 transitions, 338 flow [2022-07-12 10:23:36,567 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:23:36,573 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@169f9a03, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2c9fac00 [2022-07-12 10:23:36,573 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-12 10:23:36,603 INFO L129 PetriNetUnfolder]: 13/162 cut-off events. [2022-07-12 10:23:36,605 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 10:23:36,606 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:36,606 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:36,607 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:36,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:36,611 INFO L85 PathProgramCache]: Analyzing trace with hash -679452967, now seen corresponding path program 1 times [2022-07-12 10:23:36,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:36,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268880297] [2022-07-12 10:23:36,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:36,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:36,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:36,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:36,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268880297] [2022-07-12 10:23:36,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268880297] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:36,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:36,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:23:36,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402358124] [2022-07-12 10:23:36,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:36,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:23:36,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:36,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:23:36,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:23:36,970 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 174 [2022-07-12 10:23:36,975 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 163 transitions, 338 flow. Second operand has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:36,975 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:36,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 174 [2022-07-12 10:23:36,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:37,152 INFO L129 PetriNetUnfolder]: 58/423 cut-off events. [2022-07-12 10:23:37,153 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-07-12 10:23:37,154 INFO L84 FinitePrefix]: Finished finitePrefix Result has 621 conditions, 423 events. 58/423 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1975 event pairs, 12 based on Foata normal form. 24/419 useless extension candidates. Maximal degree in co-relation 377. Up to 44 conditions per place. [2022-07-12 10:23:37,156 INFO L132 encePairwiseOnDemand]: 154/174 looper letters, 52 selfloop transitions, 10 changer transitions 34/223 dead transitions. [2022-07-12 10:23:37,156 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 223 transitions, 677 flow [2022-07-12 10:23:37,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 10:23:37,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-12 10:23:37,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2175 transitions. [2022-07-12 10:23:37,172 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-07-12 10:23:37,172 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2175 transitions. [2022-07-12 10:23:37,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2175 transitions. [2022-07-12 10:23:37,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:37,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2175 transitions. [2022-07-12 10:23:37,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 145.0) internal successors, (2175), 15 states have internal predecessors, (2175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:37,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 174.0) internal successors, (2784), 16 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:37,198 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 174.0) internal successors, (2784), 16 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:37,199 INFO L186 Difference]: Start difference. First operand has 157 places, 163 transitions, 338 flow. Second operand 15 states and 2175 transitions. [2022-07-12 10:23:37,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 223 transitions, 677 flow [2022-07-12 10:23:37,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 223 transitions, 651 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-12 10:23:37,206 INFO L242 Difference]: Finished difference. Result has 177 places, 161 transitions, 389 flow [2022-07-12 10:23:37,208 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=389, PETRI_PLACES=177, PETRI_TRANSITIONS=161} [2022-07-12 10:23:37,210 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 20 predicate places. [2022-07-12 10:23:37,210 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 161 transitions, 389 flow [2022-07-12 10:23:37,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:37,211 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:37,211 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:37,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:23:37,212 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:37,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:37,212 INFO L85 PathProgramCache]: Analyzing trace with hash 429160743, now seen corresponding path program 1 times [2022-07-12 10:23:37,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:37,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921591260] [2022-07-12 10:23:37,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:37,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:37,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:37,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:37,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921591260] [2022-07-12 10:23:37,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921591260] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:37,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:37,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:23:37,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612818725] [2022-07-12 10:23:37,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:37,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:23:37,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:37,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:23:37,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:23:37,275 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-07-12 10:23:37,276 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 161 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:37,276 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:37,276 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-07-12 10:23:37,276 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:37,417 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([405] L44-17-->L44-18: Formula: (= v_~result_4~0_1 |v_thread1Thread1of1ForFork0_#t~ite4#1_3|) InVars {thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} OutVars{~result_4~0=v_~result_4~0_1, thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} AuxVars[] AssignedVars[~result_4~0][53], [26#L50-19true, 44#L44-18true, Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 108#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 214#(and (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))), 171#true]) [2022-07-12 10:23:37,417 INFO L384 tUnfolder$Statistics]: this new event has 77 ancestors and is cut-off event [2022-07-12 10:23:37,417 INFO L387 tUnfolder$Statistics]: existing Event has 75 ancestors and is cut-off event [2022-07-12 10:23:37,417 INFO L387 tUnfolder$Statistics]: existing Event has 99 ancestors and is cut-off event [2022-07-12 10:23:37,417 INFO L387 tUnfolder$Statistics]: existing Event has 73 ancestors and is cut-off event [2022-07-12 10:23:37,419 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][123], [26#L50-19true, 44#L44-18true, Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 108#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 214#(and (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))), 171#true]) [2022-07-12 10:23:37,419 INFO L384 tUnfolder$Statistics]: this new event has 73 ancestors and is not cut-off event [2022-07-12 10:23:37,419 INFO L387 tUnfolder$Statistics]: existing Event has 99 ancestors and is not cut-off event [2022-07-12 10:23:37,419 INFO L387 tUnfolder$Statistics]: existing Event has 75 ancestors and is not cut-off event [2022-07-12 10:23:37,419 INFO L387 tUnfolder$Statistics]: existing Event has 77 ancestors and is not cut-off event [2022-07-12 10:23:37,421 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][123], [26#L50-19true, Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 108#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), 149#L44-19true, Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 214#(and (= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256)) (= ~sort_label_is_null_1~0 (* (div ~sort_label_is_null_1~0 256) 256))), 171#true]) [2022-07-12 10:23:37,421 INFO L384 tUnfolder$Statistics]: this new event has 74 ancestors and is not cut-off event [2022-07-12 10:23:37,421 INFO L387 tUnfolder$Statistics]: existing Event has 76 ancestors and is not cut-off event [2022-07-12 10:23:37,421 INFO L387 tUnfolder$Statistics]: existing Event has 100 ancestors and is not cut-off event [2022-07-12 10:23:37,421 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is not cut-off event [2022-07-12 10:23:37,436 INFO L129 PetriNetUnfolder]: 101/1203 cut-off events. [2022-07-12 10:23:37,436 INFO L130 PetriNetUnfolder]: For 340/354 co-relation queries the response was YES. [2022-07-12 10:23:37,440 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1752 conditions, 1203 events. 101/1203 cut-off events. For 340/354 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 9165 event pairs, 24 based on Foata normal form. 5/1103 useless extension candidates. Maximal degree in co-relation 1715. Up to 58 conditions per place. [2022-07-12 10:23:37,443 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 35 selfloop transitions, 16 changer transitions 2/194 dead transitions. [2022-07-12 10:23:37,443 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 194 transitions, 570 flow [2022-07-12 10:23:37,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:23:37,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:23:37,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 789 transitions. [2022-07-12 10:23:37,445 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.906896551724138 [2022-07-12 10:23:37,445 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 789 transitions. [2022-07-12 10:23:37,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 789 transitions. [2022-07-12 10:23:37,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:37,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 789 transitions. [2022-07-12 10:23:37,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.8) internal successors, (789), 5 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:37,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:37,449 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:37,449 INFO L186 Difference]: Start difference. First operand has 177 places, 161 transitions, 389 flow. Second operand 5 states and 789 transitions. [2022-07-12 10:23:37,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 194 transitions, 570 flow [2022-07-12 10:23:37,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 194 transitions, 559 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-07-12 10:23:37,459 INFO L242 Difference]: Finished difference. Result has 170 places, 173 transitions, 498 flow [2022-07-12 10:23:37,459 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=498, PETRI_PLACES=170, PETRI_TRANSITIONS=173} [2022-07-12 10:23:37,460 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 13 predicate places. [2022-07-12 10:23:37,460 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 173 transitions, 498 flow [2022-07-12 10:23:37,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:37,461 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:37,461 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:37,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:23:37,461 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:37,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:37,462 INFO L85 PathProgramCache]: Analyzing trace with hash 857239029, now seen corresponding path program 2 times [2022-07-12 10:23:37,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:37,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021304005] [2022-07-12 10:23:37,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:37,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:37,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:37,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:37,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021304005] [2022-07-12 10:23:37,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021304005] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:37,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:37,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:23:37,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263155612] [2022-07-12 10:23:37,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:37,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:23:37,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:37,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:23:37,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:23:37,581 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-07-12 10:23:37,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 173 transitions, 498 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:37,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:37,581 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-07-12 10:23:37,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:37,725 INFO L129 PetriNetUnfolder]: 94/1204 cut-off events. [2022-07-12 10:23:37,725 INFO L130 PetriNetUnfolder]: For 323/339 co-relation queries the response was YES. [2022-07-12 10:23:37,728 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1844 conditions, 1204 events. 94/1204 cut-off events. For 323/339 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 8776 event pairs, 26 based on Foata normal form. 10/1150 useless extension candidates. Maximal degree in co-relation 1605. Up to 78 conditions per place. [2022-07-12 10:23:37,731 INFO L132 encePairwiseOnDemand]: 164/174 looper letters, 43 selfloop transitions, 10 changer transitions 0/194 dead transitions. [2022-07-12 10:23:37,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 194 transitions, 703 flow [2022-07-12 10:23:37,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:23:37,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:23:37,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 625 transitions. [2022-07-12 10:23:37,733 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8979885057471264 [2022-07-12 10:23:37,733 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 625 transitions. [2022-07-12 10:23:37,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 625 transitions. [2022-07-12 10:23:37,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:37,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 625 transitions. [2022-07-12 10:23:37,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.25) internal successors, (625), 4 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:37,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:37,737 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:37,737 INFO L186 Difference]: Start difference. First operand has 170 places, 173 transitions, 498 flow. Second operand 4 states and 625 transitions. [2022-07-12 10:23:37,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 194 transitions, 703 flow [2022-07-12 10:23:37,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 194 transitions, 699 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-12 10:23:37,745 INFO L242 Difference]: Finished difference. Result has 175 places, 179 transitions, 580 flow [2022-07-12 10:23:37,745 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=580, PETRI_PLACES=175, PETRI_TRANSITIONS=179} [2022-07-12 10:23:37,746 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 18 predicate places. [2022-07-12 10:23:37,747 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 179 transitions, 580 flow [2022-07-12 10:23:37,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:37,747 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:37,748 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:37,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:23:37,748 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:37,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:37,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1926552705, now seen corresponding path program 3 times [2022-07-12 10:23:37,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:37,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79444876] [2022-07-12 10:23:37,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:37,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:37,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:37,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:37,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79444876] [2022-07-12 10:23:37,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79444876] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:37,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:37,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:23:37,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455599126] [2022-07-12 10:23:37,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:37,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:23:37,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:37,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:23:37,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:23:37,839 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-07-12 10:23:37,840 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 179 transitions, 580 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:37,840 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:37,840 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-07-12 10:23:37,840 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:37,975 INFO L129 PetriNetUnfolder]: 95/1359 cut-off events. [2022-07-12 10:23:37,977 INFO L130 PetriNetUnfolder]: For 517/526 co-relation queries the response was YES. [2022-07-12 10:23:37,981 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2111 conditions, 1359 events. 95/1359 cut-off events. For 517/526 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 10439 event pairs, 27 based on Foata normal form. 6/1297 useless extension candidates. Maximal degree in co-relation 1448. Up to 110 conditions per place. [2022-07-12 10:23:37,986 INFO L132 encePairwiseOnDemand]: 163/174 looper letters, 39 selfloop transitions, 14 changer transitions 0/194 dead transitions. [2022-07-12 10:23:37,987 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 194 transitions, 767 flow [2022-07-12 10:23:37,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:23:37,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:23:37,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 623 transitions. [2022-07-12 10:23:37,989 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8951149425287356 [2022-07-12 10:23:37,989 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 623 transitions. [2022-07-12 10:23:37,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 623 transitions. [2022-07-12 10:23:37,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:37,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 623 transitions. [2022-07-12 10:23:37,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:37,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:37,995 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:37,995 INFO L186 Difference]: Start difference. First operand has 175 places, 179 transitions, 580 flow. Second operand 4 states and 623 transitions. [2022-07-12 10:23:37,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 194 transitions, 767 flow [2022-07-12 10:23:37,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 194 transitions, 767 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:23:38,001 INFO L242 Difference]: Finished difference. Result has 180 places, 186 transitions, 698 flow [2022-07-12 10:23:38,001 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=698, PETRI_PLACES=180, PETRI_TRANSITIONS=186} [2022-07-12 10:23:38,002 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 23 predicate places. [2022-07-12 10:23:38,003 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 186 transitions, 698 flow [2022-07-12 10:23:38,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:38,003 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:38,003 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:38,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:23:38,004 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:38,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:38,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1582955703, now seen corresponding path program 1 times [2022-07-12 10:23:38,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:38,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845341353] [2022-07-12 10:23:38,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:38,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:38,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:38,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:38,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845341353] [2022-07-12 10:23:38,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845341353] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:38,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:38,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:23:38,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24729069] [2022-07-12 10:23:38,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:38,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:23:38,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:38,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:23:38,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:23:38,120 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-07-12 10:23:38,121 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 186 transitions, 698 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:38,121 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:38,121 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-07-12 10:23:38,121 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:38,246 INFO L129 PetriNetUnfolder]: 76/1138 cut-off events. [2022-07-12 10:23:38,246 INFO L130 PetriNetUnfolder]: For 593/602 co-relation queries the response was YES. [2022-07-12 10:23:38,249 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1858 conditions, 1138 events. 76/1138 cut-off events. For 593/602 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7914 event pairs, 23 based on Foata normal form. 9/1088 useless extension candidates. Maximal degree in co-relation 1311. Up to 98 conditions per place. [2022-07-12 10:23:38,251 INFO L132 encePairwiseOnDemand]: 162/174 looper letters, 42 selfloop transitions, 15 changer transitions 0/198 dead transitions. [2022-07-12 10:23:38,251 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 198 transitions, 879 flow [2022-07-12 10:23:38,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:23:38,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:23:38,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 623 transitions. [2022-07-12 10:23:38,253 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8951149425287356 [2022-07-12 10:23:38,253 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 623 transitions. [2022-07-12 10:23:38,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 623 transitions. [2022-07-12 10:23:38,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:38,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 623 transitions. [2022-07-12 10:23:38,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:38,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:38,256 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:38,256 INFO L186 Difference]: Start difference. First operand has 180 places, 186 transitions, 698 flow. Second operand 4 states and 623 transitions. [2022-07-12 10:23:38,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 198 transitions, 879 flow [2022-07-12 10:23:38,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 198 transitions, 862 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:23:38,260 INFO L242 Difference]: Finished difference. Result has 183 places, 190 transitions, 782 flow [2022-07-12 10:23:38,261 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=782, PETRI_PLACES=183, PETRI_TRANSITIONS=190} [2022-07-12 10:23:38,263 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 26 predicate places. [2022-07-12 10:23:38,263 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 190 transitions, 782 flow [2022-07-12 10:23:38,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:38,263 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:38,263 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:38,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:23:38,264 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:38,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:38,264 INFO L85 PathProgramCache]: Analyzing trace with hash -758953314, now seen corresponding path program 1 times [2022-07-12 10:23:38,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:38,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400005847] [2022-07-12 10:23:38,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:38,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:38,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:38,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:38,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400005847] [2022-07-12 10:23:38,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400005847] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:38,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:38,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:38,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866210687] [2022-07-12 10:23:38,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:38,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:38,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:38,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:38,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:38,434 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:38,435 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 190 transitions, 782 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:38,435 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:38,435 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:38,435 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:38,949 INFO L129 PetriNetUnfolder]: 334/1697 cut-off events. [2022-07-12 10:23:38,949 INFO L130 PetriNetUnfolder]: For 868/930 co-relation queries the response was YES. [2022-07-12 10:23:38,954 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3363 conditions, 1697 events. 334/1697 cut-off events. For 868/930 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 12792 event pairs, 168 based on Foata normal form. 3/1614 useless extension candidates. Maximal degree in co-relation 1977. Up to 609 conditions per place. [2022-07-12 10:23:38,958 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 98 selfloop transitions, 5 changer transitions 48/296 dead transitions. [2022-07-12 10:23:38,958 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 296 transitions, 1407 flow [2022-07-12 10:23:38,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:23:38,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-12 10:23:38,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3982 transitions. [2022-07-12 10:23:38,989 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7628352490421456 [2022-07-12 10:23:38,989 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3982 transitions. [2022-07-12 10:23:38,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3982 transitions. [2022-07-12 10:23:38,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:38,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3982 transitions. [2022-07-12 10:23:38,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 132.73333333333332) internal successors, (3982), 30 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:39,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:39,032 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:39,032 INFO L186 Difference]: Start difference. First operand has 183 places, 190 transitions, 782 flow. Second operand 30 states and 3982 transitions. [2022-07-12 10:23:39,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 296 transitions, 1407 flow [2022-07-12 10:23:39,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 296 transitions, 1391 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:23:39,043 INFO L242 Difference]: Finished difference. Result has 238 places, 192 transitions, 881 flow [2022-07-12 10:23:39,043 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=881, PETRI_PLACES=238, PETRI_TRANSITIONS=192} [2022-07-12 10:23:39,045 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 81 predicate places. [2022-07-12 10:23:39,045 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 192 transitions, 881 flow [2022-07-12 10:23:39,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:39,047 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:39,047 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:39,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:23:39,048 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:39,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:39,048 INFO L85 PathProgramCache]: Analyzing trace with hash 2048181902, now seen corresponding path program 1 times [2022-07-12 10:23:39,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:39,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002784916] [2022-07-12 10:23:39,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:39,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:39,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:39,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:39,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002784916] [2022-07-12 10:23:39,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002784916] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:39,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:39,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:39,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606210977] [2022-07-12 10:23:39,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:39,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:39,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:39,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:39,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:39,179 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:39,180 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 192 transitions, 881 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:39,180 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:39,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:39,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:39,654 INFO L129 PetriNetUnfolder]: 406/1882 cut-off events. [2022-07-12 10:23:39,654 INFO L130 PetriNetUnfolder]: For 7656/7759 co-relation queries the response was YES. [2022-07-12 10:23:39,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6197 conditions, 1882 events. 406/1882 cut-off events. For 7656/7759 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 14174 event pairs, 254 based on Foata normal form. 3/1799 useless extension candidates. Maximal degree in co-relation 5988. Up to 719 conditions per place. [2022-07-12 10:23:39,669 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 79 selfloop transitions, 17 changer transitions 40/281 dead transitions. [2022-07-12 10:23:39,669 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 281 transitions, 1986 flow [2022-07-12 10:23:39,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-12 10:23:39,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-12 10:23:39,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3453 transitions. [2022-07-12 10:23:39,674 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.763262599469496 [2022-07-12 10:23:39,674 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3453 transitions. [2022-07-12 10:23:39,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3453 transitions. [2022-07-12 10:23:39,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:39,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3453 transitions. [2022-07-12 10:23:39,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.80769230769232) internal successors, (3453), 26 states have internal predecessors, (3453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:39,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:39,685 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:39,685 INFO L186 Difference]: Start difference. First operand has 238 places, 192 transitions, 881 flow. Second operand 26 states and 3453 transitions. [2022-07-12 10:23:39,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 281 transitions, 1986 flow [2022-07-12 10:23:39,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 281 transitions, 1793 flow, removed 96 selfloop flow, removed 13 redundant places. [2022-07-12 10:23:39,736 INFO L242 Difference]: Finished difference. Result has 246 places, 209 transitions, 1078 flow [2022-07-12 10:23:39,736 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1078, PETRI_PLACES=246, PETRI_TRANSITIONS=209} [2022-07-12 10:23:39,737 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 89 predicate places. [2022-07-12 10:23:39,737 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 209 transitions, 1078 flow [2022-07-12 10:23:39,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:39,737 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:39,737 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:39,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:23:39,738 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:39,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:39,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1358766246, now seen corresponding path program 2 times [2022-07-12 10:23:39,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:39,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119043183] [2022-07-12 10:23:39,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:39,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:39,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:39,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:39,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119043183] [2022-07-12 10:23:39,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119043183] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:39,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:39,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:39,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666592226] [2022-07-12 10:23:39,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:39,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:39,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:39,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:39,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:39,835 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:39,836 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 209 transitions, 1078 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:39,836 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:39,836 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:39,836 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:40,451 INFO L129 PetriNetUnfolder]: 408/1983 cut-off events. [2022-07-12 10:23:40,452 INFO L130 PetriNetUnfolder]: For 13337/13438 co-relation queries the response was YES. [2022-07-12 10:23:40,463 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7401 conditions, 1983 events. 408/1983 cut-off events. For 13337/13438 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 15299 event pairs, 214 based on Foata normal form. 3/1905 useless extension candidates. Maximal degree in co-relation 7239. Up to 669 conditions per place. [2022-07-12 10:23:40,471 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 117 selfloop transitions, 14 changer transitions 48/324 dead transitions. [2022-07-12 10:23:40,471 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 324 transitions, 2614 flow [2022-07-12 10:23:40,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-12 10:23:40,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-12 10:23:40,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4117 transitions. [2022-07-12 10:23:40,479 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7632554690396737 [2022-07-12 10:23:40,479 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4117 transitions. [2022-07-12 10:23:40,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4117 transitions. [2022-07-12 10:23:40,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:40,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4117 transitions. [2022-07-12 10:23:40,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 132.80645161290323) internal successors, (4117), 31 states have internal predecessors, (4117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:40,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:40,502 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:40,502 INFO L186 Difference]: Start difference. First operand has 246 places, 209 transitions, 1078 flow. Second operand 31 states and 4117 transitions. [2022-07-12 10:23:40,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 324 transitions, 2614 flow [2022-07-12 10:23:40,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 324 transitions, 2194 flow, removed 210 selfloop flow, removed 15 redundant places. [2022-07-12 10:23:40,528 INFO L242 Difference]: Finished difference. Result has 273 places, 214 transitions, 1169 flow [2022-07-12 10:23:40,529 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=984, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1169, PETRI_PLACES=273, PETRI_TRANSITIONS=214} [2022-07-12 10:23:40,529 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 116 predicate places. [2022-07-12 10:23:40,529 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 214 transitions, 1169 flow [2022-07-12 10:23:40,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:40,530 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:40,530 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:40,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:23:40,531 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:40,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:40,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1511718624, now seen corresponding path program 3 times [2022-07-12 10:23:40,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:40,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974132127] [2022-07-12 10:23:40,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:40,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:40,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:40,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:40,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974132127] [2022-07-12 10:23:40,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974132127] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:40,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:40,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:40,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86434479] [2022-07-12 10:23:40,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:40,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:40,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:40,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:40,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:40,615 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:40,616 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 214 transitions, 1169 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:40,616 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:40,616 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:40,616 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:41,159 INFO L129 PetriNetUnfolder]: 399/1880 cut-off events. [2022-07-12 10:23:41,160 INFO L130 PetriNetUnfolder]: For 14920/15031 co-relation queries the response was YES. [2022-07-12 10:23:41,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7687 conditions, 1880 events. 399/1880 cut-off events. For 14920/15031 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 14199 event pairs, 239 based on Foata normal form. 6/1797 useless extension candidates. Maximal degree in co-relation 7511. Up to 755 conditions per place. [2022-07-12 10:23:41,177 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 84 selfloop transitions, 18 changer transitions 33/280 dead transitions. [2022-07-12 10:23:41,177 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 280 transitions, 2353 flow [2022-07-12 10:23:41,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:23:41,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:23:41,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2925 transitions. [2022-07-12 10:23:41,180 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7641065830721003 [2022-07-12 10:23:41,180 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2925 transitions. [2022-07-12 10:23:41,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2925 transitions. [2022-07-12 10:23:41,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:41,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2925 transitions. [2022-07-12 10:23:41,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.95454545454547) internal successors, (2925), 22 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:41,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:41,187 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:41,187 INFO L186 Difference]: Start difference. First operand has 273 places, 214 transitions, 1169 flow. Second operand 22 states and 2925 transitions. [2022-07-12 10:23:41,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 280 transitions, 2353 flow [2022-07-12 10:23:41,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 280 transitions, 2040 flow, removed 156 selfloop flow, removed 22 redundant places. [2022-07-12 10:23:41,219 INFO L242 Difference]: Finished difference. Result has 267 places, 224 transitions, 1335 flow [2022-07-12 10:23:41,220 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1335, PETRI_PLACES=267, PETRI_TRANSITIONS=224} [2022-07-12 10:23:41,220 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 110 predicate places. [2022-07-12 10:23:41,220 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 224 transitions, 1335 flow [2022-07-12 10:23:41,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:41,221 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:41,221 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:41,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:23:41,221 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:41,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:41,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1794699346, now seen corresponding path program 4 times [2022-07-12 10:23:41,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:41,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971650210] [2022-07-12 10:23:41,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:41,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:41,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:41,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:41,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971650210] [2022-07-12 10:23:41,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971650210] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:41,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:41,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:41,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111304206] [2022-07-12 10:23:41,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:41,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:41,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:41,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:41,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:41,310 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:41,311 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 224 transitions, 1335 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:41,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:41,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:41,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:41,942 INFO L129 PetriNetUnfolder]: 430/1981 cut-off events. [2022-07-12 10:23:41,943 INFO L130 PetriNetUnfolder]: For 10876/10996 co-relation queries the response was YES. [2022-07-12 10:23:41,955 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7499 conditions, 1981 events. 430/1981 cut-off events. For 10876/10996 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 15140 event pairs, 284 based on Foata normal form. 4/1895 useless extension candidates. Maximal degree in co-relation 7412. Up to 817 conditions per place. [2022-07-12 10:23:41,963 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 26 changer transitions 40/311 dead transitions. [2022-07-12 10:23:41,963 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 311 transitions, 2684 flow [2022-07-12 10:23:41,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-12 10:23:41,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-07-12 10:23:41,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3320 transitions. [2022-07-12 10:23:41,967 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7632183908045977 [2022-07-12 10:23:41,967 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3320 transitions. [2022-07-12 10:23:41,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3320 transitions. [2022-07-12 10:23:41,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:41,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3320 transitions. [2022-07-12 10:23:41,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 132.8) internal successors, (3320), 25 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:41,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:41,975 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:41,975 INFO L186 Difference]: Start difference. First operand has 267 places, 224 transitions, 1335 flow. Second operand 25 states and 3320 transitions. [2022-07-12 10:23:41,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 311 transitions, 2684 flow [2022-07-12 10:23:42,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 311 transitions, 2423 flow, removed 113 selfloop flow, removed 12 redundant places. [2022-07-12 10:23:42,008 INFO L242 Difference]: Finished difference. Result has 288 places, 239 transitions, 1519 flow [2022-07-12 10:23:42,009 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1519, PETRI_PLACES=288, PETRI_TRANSITIONS=239} [2022-07-12 10:23:42,009 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 131 predicate places. [2022-07-12 10:23:42,010 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 239 transitions, 1519 flow [2022-07-12 10:23:42,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:42,010 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:42,010 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:42,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 10:23:42,011 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:42,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:42,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1292765374, now seen corresponding path program 5 times [2022-07-12 10:23:42,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:42,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691826873] [2022-07-12 10:23:42,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:42,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:42,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:42,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:42,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691826873] [2022-07-12 10:23:42,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691826873] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:42,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:42,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:42,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006189663] [2022-07-12 10:23:42,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:42,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:42,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:42,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:42,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:42,106 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:42,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 239 transitions, 1519 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:42,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:42,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:42,108 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:42,706 INFO L129 PetriNetUnfolder]: 428/2036 cut-off events. [2022-07-12 10:23:42,706 INFO L130 PetriNetUnfolder]: For 16701/16827 co-relation queries the response was YES. [2022-07-12 10:23:42,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8579 conditions, 2036 events. 428/2036 cut-off events. For 16701/16827 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15779 event pairs, 255 based on Foata normal form. 3/1954 useless extension candidates. Maximal degree in co-relation 8451. Up to 753 conditions per place. [2022-07-12 10:23:42,733 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 173 selfloop transitions, 25 changer transitions 54/397 dead transitions. [2022-07-12 10:23:42,733 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 397 transitions, 3928 flow [2022-07-12 10:23:42,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:23:42,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-12 10:23:42,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3981 transitions. [2022-07-12 10:23:42,737 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7626436781609195 [2022-07-12 10:23:42,737 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3981 transitions. [2022-07-12 10:23:42,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3981 transitions. [2022-07-12 10:23:42,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:42,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3981 transitions. [2022-07-12 10:23:42,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 132.7) internal successors, (3981), 30 states have internal predecessors, (3981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:42,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:42,747 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:42,747 INFO L186 Difference]: Start difference. First operand has 288 places, 239 transitions, 1519 flow. Second operand 30 states and 3981 transitions. [2022-07-12 10:23:42,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 397 transitions, 3928 flow [2022-07-12 10:23:42,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 397 transitions, 3536 flow, removed 196 selfloop flow, removed 13 redundant places. [2022-07-12 10:23:42,786 INFO L242 Difference]: Finished difference. Result has 316 places, 242 transitions, 1626 flow [2022-07-12 10:23:42,787 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1415, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1626, PETRI_PLACES=316, PETRI_TRANSITIONS=242} [2022-07-12 10:23:42,787 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 159 predicate places. [2022-07-12 10:23:42,787 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 242 transitions, 1626 flow [2022-07-12 10:23:42,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:42,788 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:42,788 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:42,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 10:23:42,788 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:42,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:42,789 INFO L85 PathProgramCache]: Analyzing trace with hash 10274408, now seen corresponding path program 6 times [2022-07-12 10:23:42,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:42,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621178666] [2022-07-12 10:23:42,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:42,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:42,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:42,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:42,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621178666] [2022-07-12 10:23:42,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621178666] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:42,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:42,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:42,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610377271] [2022-07-12 10:23:42,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:42,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:42,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:42,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:42,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:42,901 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:42,902 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 242 transitions, 1626 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:42,902 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:42,902 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:42,902 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:43,548 INFO L129 PetriNetUnfolder]: 443/2076 cut-off events. [2022-07-12 10:23:43,549 INFO L130 PetriNetUnfolder]: For 19227/19353 co-relation queries the response was YES. [2022-07-12 10:23:43,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9066 conditions, 2076 events. 443/2076 cut-off events. For 19227/19353 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 16097 event pairs, 282 based on Foata normal form. 9/1993 useless extension candidates. Maximal degree in co-relation 8864. Up to 849 conditions per place. [2022-07-12 10:23:43,573 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 116 selfloop transitions, 35 changer transitions 41/337 dead transitions. [2022-07-12 10:23:43,573 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 337 transitions, 3306 flow [2022-07-12 10:23:43,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 10:23:43,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-12 10:23:43,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3708 transitions. [2022-07-12 10:23:43,576 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7610837438423645 [2022-07-12 10:23:43,577 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3708 transitions. [2022-07-12 10:23:43,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3708 transitions. [2022-07-12 10:23:43,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:43,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3708 transitions. [2022-07-12 10:23:43,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.42857142857142) internal successors, (3708), 28 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:43,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:43,585 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:43,585 INFO L186 Difference]: Start difference. First operand has 316 places, 242 transitions, 1626 flow. Second operand 28 states and 3708 transitions. [2022-07-12 10:23:43,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 337 transitions, 3306 flow [2022-07-12 10:23:43,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 337 transitions, 3138 flow, removed 82 selfloop flow, removed 21 redundant places. [2022-07-12 10:23:43,642 INFO L242 Difference]: Finished difference. Result has 318 places, 255 transitions, 1896 flow [2022-07-12 10:23:43,642 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1561, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1896, PETRI_PLACES=318, PETRI_TRANSITIONS=255} [2022-07-12 10:23:43,643 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 161 predicate places. [2022-07-12 10:23:43,643 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 255 transitions, 1896 flow [2022-07-12 10:23:43,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:43,644 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:43,644 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:43,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 10:23:43,644 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:43,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:43,644 INFO L85 PathProgramCache]: Analyzing trace with hash 624347520, now seen corresponding path program 7 times [2022-07-12 10:23:43,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:43,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220284095] [2022-07-12 10:23:43,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:43,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:43,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:43,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:43,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220284095] [2022-07-12 10:23:43,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220284095] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:43,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:43,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:43,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010376105] [2022-07-12 10:23:43,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:43,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:43,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:43,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:43,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:43,740 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:43,740 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 255 transitions, 1896 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:43,740 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:43,741 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:43,741 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:44,318 INFO L129 PetriNetUnfolder]: 440/2094 cut-off events. [2022-07-12 10:23:44,319 INFO L130 PetriNetUnfolder]: For 16923/17049 co-relation queries the response was YES. [2022-07-12 10:23:44,336 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9029 conditions, 2094 events. 440/2094 cut-off events. For 16923/17049 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 16388 event pairs, 289 based on Foata normal form. 6/2001 useless extension candidates. Maximal degree in co-relation 8898. Up to 860 conditions per place. [2022-07-12 10:23:44,345 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 121 selfloop transitions, 36 changer transitions 45/347 dead transitions. [2022-07-12 10:23:44,345 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 347 transitions, 3673 flow [2022-07-12 10:23:44,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-12 10:23:44,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-12 10:23:44,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3447 transitions. [2022-07-12 10:23:44,349 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7619363395225465 [2022-07-12 10:23:44,349 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3447 transitions. [2022-07-12 10:23:44,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3447 transitions. [2022-07-12 10:23:44,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:44,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3447 transitions. [2022-07-12 10:23:44,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.57692307692307) internal successors, (3447), 26 states have internal predecessors, (3447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:44,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:44,359 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:44,359 INFO L186 Difference]: Start difference. First operand has 318 places, 255 transitions, 1896 flow. Second operand 26 states and 3447 transitions. [2022-07-12 10:23:44,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 347 transitions, 3673 flow [2022-07-12 10:23:44,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 347 transitions, 3492 flow, removed 82 selfloop flow, removed 16 redundant places. [2022-07-12 10:23:44,412 INFO L242 Difference]: Finished difference. Result has 330 places, 266 transitions, 2143 flow [2022-07-12 10:23:44,412 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1823, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2143, PETRI_PLACES=330, PETRI_TRANSITIONS=266} [2022-07-12 10:23:44,413 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 173 predicate places. [2022-07-12 10:23:44,413 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 266 transitions, 2143 flow [2022-07-12 10:23:44,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:44,414 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:44,414 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:44,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 10:23:44,414 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:44,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:44,415 INFO L85 PathProgramCache]: Analyzing trace with hash 918863826, now seen corresponding path program 8 times [2022-07-12 10:23:44,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:44,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166072466] [2022-07-12 10:23:44,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:44,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:44,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:44,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:44,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166072466] [2022-07-12 10:23:44,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166072466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:44,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:44,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:44,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294923209] [2022-07-12 10:23:44,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:44,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:44,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:44,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:44,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:44,517 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:44,518 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 266 transitions, 2143 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:44,518 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:44,518 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:44,518 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:45,084 INFO L129 PetriNetUnfolder]: 433/2073 cut-off events. [2022-07-12 10:23:45,084 INFO L130 PetriNetUnfolder]: For 16989/17111 co-relation queries the response was YES. [2022-07-12 10:23:45,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8985 conditions, 2073 events. 433/2073 cut-off events. For 16989/17111 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 16164 event pairs, 285 based on Foata normal form. 9/1988 useless extension candidates. Maximal degree in co-relation 8766. Up to 852 conditions per place. [2022-07-12 10:23:45,119 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 119 selfloop transitions, 45 changer transitions 33/342 dead transitions. [2022-07-12 10:23:45,119 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 342 transitions, 3678 flow [2022-07-12 10:23:45,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:23:45,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:23:45,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2923 transitions. [2022-07-12 10:23:45,128 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7635841170323929 [2022-07-12 10:23:45,129 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2923 transitions. [2022-07-12 10:23:45,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2923 transitions. [2022-07-12 10:23:45,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:45,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2923 transitions. [2022-07-12 10:23:45,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.86363636363637) internal successors, (2923), 22 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:45,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:45,147 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:45,148 INFO L186 Difference]: Start difference. First operand has 330 places, 266 transitions, 2143 flow. Second operand 22 states and 2923 transitions. [2022-07-12 10:23:45,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 342 transitions, 3678 flow [2022-07-12 10:23:45,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 342 transitions, 3502 flow, removed 77 selfloop flow, removed 17 redundant places. [2022-07-12 10:23:45,215 INFO L242 Difference]: Finished difference. Result has 327 places, 273 transitions, 2332 flow [2022-07-12 10:23:45,216 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2064, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2332, PETRI_PLACES=327, PETRI_TRANSITIONS=273} [2022-07-12 10:23:45,218 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 170 predicate places. [2022-07-12 10:23:45,218 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 273 transitions, 2332 flow [2022-07-12 10:23:45,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:45,218 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:45,218 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:45,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 10:23:45,219 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:45,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:45,219 INFO L85 PathProgramCache]: Analyzing trace with hash -169181728, now seen corresponding path program 9 times [2022-07-12 10:23:45,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:45,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353891653] [2022-07-12 10:23:45,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:45,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:45,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:45,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:45,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353891653] [2022-07-12 10:23:45,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353891653] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:45,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:45,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:45,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083358245] [2022-07-12 10:23:45,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:45,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:45,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:45,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:45,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:45,335 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:45,336 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 273 transitions, 2332 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:45,336 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:45,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:45,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:46,019 INFO L129 PetriNetUnfolder]: 432/2071 cut-off events. [2022-07-12 10:23:46,020 INFO L130 PetriNetUnfolder]: For 15589/15714 co-relation queries the response was YES. [2022-07-12 10:23:46,040 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8927 conditions, 2071 events. 432/2071 cut-off events. For 15589/15714 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 16137 event pairs, 282 based on Foata normal form. 10/1989 useless extension candidates. Maximal degree in co-relation 8713. Up to 842 conditions per place. [2022-07-12 10:23:46,048 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 123 selfloop transitions, 38 changer transitions 45/351 dead transitions. [2022-07-12 10:23:46,048 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 351 transitions, 3986 flow [2022-07-12 10:23:46,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-12 10:23:46,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-12 10:23:46,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3581 transitions. [2022-07-12 10:23:46,051 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7622392507449979 [2022-07-12 10:23:46,052 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3581 transitions. [2022-07-12 10:23:46,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3581 transitions. [2022-07-12 10:23:46,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:46,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3581 transitions. [2022-07-12 10:23:46,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.62962962962962) internal successors, (3581), 27 states have internal predecessors, (3581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:46,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:46,061 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:46,061 INFO L186 Difference]: Start difference. First operand has 327 places, 273 transitions, 2332 flow. Second operand 27 states and 3581 transitions. [2022-07-12 10:23:46,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 351 transitions, 3986 flow [2022-07-12 10:23:46,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 351 transitions, 3866 flow, removed 51 selfloop flow, removed 7 redundant places. [2022-07-12 10:23:46,128 INFO L242 Difference]: Finished difference. Result has 354 places, 276 transitions, 2485 flow [2022-07-12 10:23:46,128 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2256, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2485, PETRI_PLACES=354, PETRI_TRANSITIONS=276} [2022-07-12 10:23:46,129 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 197 predicate places. [2022-07-12 10:23:46,129 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 276 transitions, 2485 flow [2022-07-12 10:23:46,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:46,129 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:46,129 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:46,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 10:23:46,130 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:46,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:46,130 INFO L85 PathProgramCache]: Analyzing trace with hash -2095242120, now seen corresponding path program 10 times [2022-07-12 10:23:46,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:46,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726367673] [2022-07-12 10:23:46,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:46,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:46,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:46,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:46,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726367673] [2022-07-12 10:23:46,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726367673] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:46,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:46,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:46,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731510773] [2022-07-12 10:23:46,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:46,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:46,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:46,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:46,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:46,219 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:46,220 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 276 transitions, 2485 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:46,220 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:46,220 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:46,220 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:46,823 INFO L129 PetriNetUnfolder]: 415/2059 cut-off events. [2022-07-12 10:23:46,823 INFO L130 PetriNetUnfolder]: For 16961/17080 co-relation queries the response was YES. [2022-07-12 10:23:46,844 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8806 conditions, 2059 events. 415/2059 cut-off events. For 16961/17080 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 16078 event pairs, 282 based on Foata normal form. 10/1978 useless extension candidates. Maximal degree in co-relation 8650. Up to 844 conditions per place. [2022-07-12 10:23:46,851 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 116 selfloop transitions, 29 changer transitions 38/328 dead transitions. [2022-07-12 10:23:46,852 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 328 transitions, 3581 flow [2022-07-12 10:23:46,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:23:46,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:23:46,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2400 transitions. [2022-07-12 10:23:46,854 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7662835249042146 [2022-07-12 10:23:46,854 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2400 transitions. [2022-07-12 10:23:46,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2400 transitions. [2022-07-12 10:23:46,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:46,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2400 transitions. [2022-07-12 10:23:46,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 133.33333333333334) internal successors, (2400), 18 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:46,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:46,860 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:46,860 INFO L186 Difference]: Start difference. First operand has 354 places, 276 transitions, 2485 flow. Second operand 18 states and 2400 transitions. [2022-07-12 10:23:46,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 328 transitions, 3581 flow [2022-07-12 10:23:46,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 328 transitions, 3380 flow, removed 69 selfloop flow, removed 19 redundant places. [2022-07-12 10:23:46,935 INFO L242 Difference]: Finished difference. Result has 340 places, 256 transitions, 2052 flow [2022-07-12 10:23:46,936 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2338, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2052, PETRI_PLACES=340, PETRI_TRANSITIONS=256} [2022-07-12 10:23:46,936 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 183 predicate places. [2022-07-12 10:23:46,936 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 256 transitions, 2052 flow [2022-07-12 10:23:46,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:46,937 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:46,937 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:46,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 10:23:46,937 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:46,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:46,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1849615134, now seen corresponding path program 11 times [2022-07-12 10:23:46,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:46,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863224600] [2022-07-12 10:23:46,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:46,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:47,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:47,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:47,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863224600] [2022-07-12 10:23:47,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863224600] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:47,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:47,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:47,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008802135] [2022-07-12 10:23:47,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:47,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:47,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:47,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:47,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:47,024 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:47,025 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 256 transitions, 2052 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:47,025 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:47,025 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:47,025 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:47,523 INFO L129 PetriNetUnfolder]: 419/2020 cut-off events. [2022-07-12 10:23:47,524 INFO L130 PetriNetUnfolder]: For 14988/15113 co-relation queries the response was YES. [2022-07-12 10:23:47,539 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8649 conditions, 2020 events. 419/2020 cut-off events. For 14988/15113 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15585 event pairs, 286 based on Foata normal form. 10/1936 useless extension candidates. Maximal degree in co-relation 8554. Up to 844 conditions per place. [2022-07-12 10:23:47,545 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 106 selfloop transitions, 36 changer transitions 30/317 dead transitions. [2022-07-12 10:23:47,545 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 317 transitions, 3313 flow [2022-07-12 10:23:47,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:23:47,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:23:47,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2663 transitions. [2022-07-12 10:23:47,548 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7652298850574712 [2022-07-12 10:23:47,548 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2663 transitions. [2022-07-12 10:23:47,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2663 transitions. [2022-07-12 10:23:47,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:47,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2663 transitions. [2022-07-12 10:23:47,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.15) internal successors, (2663), 20 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) [2022-07-12 10:23:47,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:47,554 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:47,554 INFO L186 Difference]: Start difference. First operand has 340 places, 256 transitions, 2052 flow. Second operand 20 states and 2663 transitions. [2022-07-12 10:23:47,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 317 transitions, 3313 flow [2022-07-12 10:23:47,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 317 transitions, 3066 flow, removed 29 selfloop flow, removed 22 redundant places. [2022-07-12 10:23:47,611 INFO L242 Difference]: Finished difference. Result has 322 places, 265 transitions, 2178 flow [2022-07-12 10:23:47,611 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1894, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2178, PETRI_PLACES=322, PETRI_TRANSITIONS=265} [2022-07-12 10:23:47,611 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 165 predicate places. [2022-07-12 10:23:47,611 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 265 transitions, 2178 flow [2022-07-12 10:23:47,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:47,612 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:47,612 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:47,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 10:23:47,612 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:47,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:47,613 INFO L85 PathProgramCache]: Analyzing trace with hash -461714984, now seen corresponding path program 12 times [2022-07-12 10:23:47,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:47,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385702334] [2022-07-12 10:23:47,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:47,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:47,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:47,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:47,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385702334] [2022-07-12 10:23:47,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385702334] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:47,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:47,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:47,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956417978] [2022-07-12 10:23:47,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:47,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:47,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:47,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:47,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:47,697 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:47,698 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 265 transitions, 2178 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:47,698 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:47,698 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:47,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:48,201 INFO L129 PetriNetUnfolder]: 416/2128 cut-off events. [2022-07-12 10:23:48,202 INFO L130 PetriNetUnfolder]: For 14485/14589 co-relation queries the response was YES. [2022-07-12 10:23:48,218 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8570 conditions, 2128 events. 416/2128 cut-off events. For 14485/14589 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 16824 event pairs, 294 based on Foata normal form. 4/2038 useless extension candidates. Maximal degree in co-relation 8480. Up to 842 conditions per place. [2022-07-12 10:23:48,224 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 107 selfloop transitions, 37 changer transitions 31/320 dead transitions. [2022-07-12 10:23:48,224 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 320 transitions, 3311 flow [2022-07-12 10:23:48,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:23:48,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:23:48,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2534 transitions. [2022-07-12 10:23:48,226 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7664851784633999 [2022-07-12 10:23:48,226 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2534 transitions. [2022-07-12 10:23:48,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2534 transitions. [2022-07-12 10:23:48,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:48,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2534 transitions. [2022-07-12 10:23:48,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.3684210526316) internal successors, (2534), 19 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:48,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:48,232 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:48,232 INFO L186 Difference]: Start difference. First operand has 322 places, 265 transitions, 2178 flow. Second operand 19 states and 2534 transitions. [2022-07-12 10:23:48,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 320 transitions, 3311 flow [2022-07-12 10:23:48,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 320 transitions, 3188 flow, removed 41 selfloop flow, removed 6 redundant places. [2022-07-12 10:23:48,288 INFO L242 Difference]: Finished difference. Result has 333 places, 268 transitions, 2264 flow [2022-07-12 10:23:48,289 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2090, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2264, PETRI_PLACES=333, PETRI_TRANSITIONS=268} [2022-07-12 10:23:48,289 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 176 predicate places. [2022-07-12 10:23:48,289 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 268 transitions, 2264 flow [2022-07-12 10:23:48,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:48,290 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:48,290 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:48,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 10:23:48,290 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:48,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:48,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1477349244, now seen corresponding path program 13 times [2022-07-12 10:23:48,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:48,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448351519] [2022-07-12 10:23:48,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:48,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:48,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:48,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:48,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448351519] [2022-07-12 10:23:48,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448351519] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:48,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:48,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:48,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508168791] [2022-07-12 10:23:48,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:48,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:48,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:48,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:48,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:48,377 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:48,378 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 268 transitions, 2264 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:48,378 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:48,378 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:48,378 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:48,887 INFO L129 PetriNetUnfolder]: 413/2006 cut-off events. [2022-07-12 10:23:48,888 INFO L130 PetriNetUnfolder]: For 13931/14053 co-relation queries the response was YES. [2022-07-12 10:23:48,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8373 conditions, 2006 events. 413/2006 cut-off events. For 13931/14053 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15534 event pairs, 283 based on Foata normal form. 9/1920 useless extension candidates. Maximal degree in co-relation 8278. Up to 842 conditions per place. [2022-07-12 10:23:48,907 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 106 selfloop transitions, 28 changer transitions 40/319 dead transitions. [2022-07-12 10:23:48,907 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 319 transitions, 3274 flow [2022-07-12 10:23:48,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:23:48,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:23:48,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2921 transitions. [2022-07-12 10:23:48,909 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7630616509926855 [2022-07-12 10:23:48,909 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2921 transitions. [2022-07-12 10:23:48,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2921 transitions. [2022-07-12 10:23:48,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:48,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2921 transitions. [2022-07-12 10:23:48,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.77272727272728) internal successors, (2921), 22 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:48,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:48,915 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:48,915 INFO L186 Difference]: Start difference. First operand has 333 places, 268 transitions, 2264 flow. Second operand 22 states and 2921 transitions. [2022-07-12 10:23:48,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 319 transitions, 3274 flow [2022-07-12 10:23:48,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 319 transitions, 3135 flow, removed 32 selfloop flow, removed 8 redundant places. [2022-07-12 10:23:48,971 INFO L242 Difference]: Finished difference. Result has 347 places, 259 transitions, 2067 flow [2022-07-12 10:23:48,971 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2159, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2067, PETRI_PLACES=347, PETRI_TRANSITIONS=259} [2022-07-12 10:23:48,972 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 190 predicate places. [2022-07-12 10:23:48,972 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 259 transitions, 2067 flow [2022-07-12 10:23:48,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:48,972 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:48,972 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:48,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 10:23:48,973 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:48,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:48,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1590304908, now seen corresponding path program 14 times [2022-07-12 10:23:48,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:48,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605884500] [2022-07-12 10:23:48,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:48,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:49,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:49,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:49,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605884500] [2022-07-12 10:23:49,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605884500] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:49,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:49,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:49,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333343919] [2022-07-12 10:23:49,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:49,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:49,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:49,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:49,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:49,057 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:49,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 259 transitions, 2067 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:49,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:49,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:49,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:49,538 INFO L129 PetriNetUnfolder]: 398/2072 cut-off events. [2022-07-12 10:23:49,539 INFO L130 PetriNetUnfolder]: For 14286/14390 co-relation queries the response was YES. [2022-07-12 10:23:49,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8195 conditions, 2072 events. 398/2072 cut-off events. For 14286/14390 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 16275 event pairs, 293 based on Foata normal form. 4/1984 useless extension candidates. Maximal degree in co-relation 8095. Up to 830 conditions per place. [2022-07-12 10:23:49,556 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 97 selfloop transitions, 14 changer transitions 43/299 dead transitions. [2022-07-12 10:23:49,556 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 299 transitions, 2865 flow [2022-07-12 10:23:49,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 10:23:49,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-12 10:23:49,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2784 transitions. [2022-07-12 10:23:49,559 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-07-12 10:23:49,559 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2784 transitions. [2022-07-12 10:23:49,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2784 transitions. [2022-07-12 10:23:49,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:49,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2784 transitions. [2022-07-12 10:23:49,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.57142857142858) internal successors, (2784), 21 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:49,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:49,564 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:49,564 INFO L186 Difference]: Start difference. First operand has 347 places, 259 transitions, 2067 flow. Second operand 21 states and 2784 transitions. [2022-07-12 10:23:49,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 299 transitions, 2865 flow [2022-07-12 10:23:49,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 299 transitions, 2696 flow, removed 36 selfloop flow, removed 24 redundant places. [2022-07-12 10:23:49,611 INFO L242 Difference]: Finished difference. Result has 330 places, 236 transitions, 1609 flow [2022-07-12 10:23:49,611 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1935, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1609, PETRI_PLACES=330, PETRI_TRANSITIONS=236} [2022-07-12 10:23:49,612 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 173 predicate places. [2022-07-12 10:23:49,612 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 236 transitions, 1609 flow [2022-07-12 10:23:49,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:49,612 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:49,612 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:49,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 10:23:49,613 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:49,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:49,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1971771582, now seen corresponding path program 15 times [2022-07-12 10:23:49,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:49,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500877630] [2022-07-12 10:23:49,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:49,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:49,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:49,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:49,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500877630] [2022-07-12 10:23:49,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500877630] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:49,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:49,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:49,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715213882] [2022-07-12 10:23:49,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:49,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:49,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:49,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:49,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:49,700 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:49,701 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 236 transitions, 1609 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:49,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:49,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:49,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:50,195 INFO L129 PetriNetUnfolder]: 409/1984 cut-off events. [2022-07-12 10:23:50,195 INFO L130 PetriNetUnfolder]: For 13775/13893 co-relation queries the response was YES. [2022-07-12 10:23:50,209 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8185 conditions, 1984 events. 409/1984 cut-off events. For 13775/13893 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15278 event pairs, 289 based on Foata normal form. 5/1894 useless extension candidates. Maximal degree in co-relation 8094. Up to 830 conditions per place. [2022-07-12 10:23:50,213 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 96 selfloop transitions, 26 changer transitions 35/302 dead transitions. [2022-07-12 10:23:50,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 302 transitions, 2891 flow [2022-07-12 10:23:50,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:23:50,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:23:50,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3187 transitions. [2022-07-12 10:23:50,216 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7631704980842912 [2022-07-12 10:23:50,216 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3187 transitions. [2022-07-12 10:23:50,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3187 transitions. [2022-07-12 10:23:50,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:50,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3187 transitions. [2022-07-12 10:23:50,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.79166666666666) internal successors, (3187), 24 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:50,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:50,222 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:50,222 INFO L186 Difference]: Start difference. First operand has 330 places, 236 transitions, 1609 flow. Second operand 24 states and 3187 transitions. [2022-07-12 10:23:50,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 302 transitions, 2891 flow [2022-07-12 10:23:50,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 302 transitions, 2646 flow, removed 42 selfloop flow, removed 23 redundant places. [2022-07-12 10:23:50,265 INFO L242 Difference]: Finished difference. Result has 311 places, 247 transitions, 1789 flow [2022-07-12 10:23:50,265 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1503, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1789, PETRI_PLACES=311, PETRI_TRANSITIONS=247} [2022-07-12 10:23:50,266 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 154 predicate places. [2022-07-12 10:23:50,266 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 247 transitions, 1789 flow [2022-07-12 10:23:50,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:50,266 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:50,266 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:50,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 10:23:50,267 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:50,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:50,267 INFO L85 PathProgramCache]: Analyzing trace with hash -596781132, now seen corresponding path program 16 times [2022-07-12 10:23:50,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:50,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877291582] [2022-07-12 10:23:50,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:50,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:50,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:50,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:50,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877291582] [2022-07-12 10:23:50,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877291582] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:50,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:50,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:50,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004348706] [2022-07-12 10:23:50,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:50,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:50,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:50,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:50,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:50,375 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:50,375 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 247 transitions, 1789 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:50,375 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:50,376 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:50,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:50,866 INFO L129 PetriNetUnfolder]: 406/1986 cut-off events. [2022-07-12 10:23:50,866 INFO L130 PetriNetUnfolder]: For 12731/12850 co-relation queries the response was YES. [2022-07-12 10:23:50,881 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7986 conditions, 1986 events. 406/1986 cut-off events. For 12731/12850 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15327 event pairs, 289 based on Foata normal form. 6/1897 useless extension candidates. Maximal degree in co-relation 7896. Up to 832 conditions per place. [2022-07-12 10:23:50,886 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 95 selfloop transitions, 28 changer transitions 36/304 dead transitions. [2022-07-12 10:23:50,887 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 304 transitions, 2924 flow [2022-07-12 10:23:50,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-12 10:23:50,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-12 10:23:50,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3056 transitions. [2022-07-12 10:23:50,889 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7636181909045477 [2022-07-12 10:23:50,889 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3056 transitions. [2022-07-12 10:23:50,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3056 transitions. [2022-07-12 10:23:50,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:50,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3056 transitions. [2022-07-12 10:23:50,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.8695652173913) internal successors, (3056), 23 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:50,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:50,894 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:50,894 INFO L186 Difference]: Start difference. First operand has 311 places, 247 transitions, 1789 flow. Second operand 23 states and 3056 transitions. [2022-07-12 10:23:50,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 304 transitions, 2924 flow [2022-07-12 10:23:50,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 304 transitions, 2773 flow, removed 70 selfloop flow, removed 11 redundant places. [2022-07-12 10:23:50,939 INFO L242 Difference]: Finished difference. Result has 323 places, 251 transitions, 1915 flow [2022-07-12 10:23:50,940 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1721, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1915, PETRI_PLACES=323, PETRI_TRANSITIONS=251} [2022-07-12 10:23:50,940 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 166 predicate places. [2022-07-12 10:23:50,940 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 251 transitions, 1915 flow [2022-07-12 10:23:50,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:50,941 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:50,941 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:50,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 10:23:50,941 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:50,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:50,941 INFO L85 PathProgramCache]: Analyzing trace with hash 323830658, now seen corresponding path program 17 times [2022-07-12 10:23:50,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:50,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657591753] [2022-07-12 10:23:50,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:50,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:51,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:51,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:51,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657591753] [2022-07-12 10:23:51,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657591753] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:51,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:51,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:51,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072097866] [2022-07-12 10:23:51,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:51,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:51,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:51,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:51,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:51,042 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:51,043 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 251 transitions, 1915 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:51,043 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:51,043 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:51,043 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:51,646 INFO L129 PetriNetUnfolder]: 401/1970 cut-off events. [2022-07-12 10:23:51,646 INFO L130 PetriNetUnfolder]: For 12818/12937 co-relation queries the response was YES. [2022-07-12 10:23:51,661 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7937 conditions, 1970 events. 401/1970 cut-off events. For 12818/12937 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15188 event pairs, 287 based on Foata normal form. 6/1882 useless extension candidates. Maximal degree in co-relation 7841. Up to 832 conditions per place. [2022-07-12 10:23:51,665 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 94 selfloop transitions, 30 changer transitions 30/299 dead transitions. [2022-07-12 10:23:51,665 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 299 transitions, 2899 flow [2022-07-12 10:23:51,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:23:51,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:23:51,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2665 transitions. [2022-07-12 10:23:51,669 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7658045977011494 [2022-07-12 10:23:51,669 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2665 transitions. [2022-07-12 10:23:51,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2665 transitions. [2022-07-12 10:23:51,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:51,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2665 transitions. [2022-07-12 10:23:51,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.25) internal successors, (2665), 20 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:51,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:51,685 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:51,691 INFO L186 Difference]: Start difference. First operand has 323 places, 251 transitions, 1915 flow. Second operand 20 states and 2665 transitions. [2022-07-12 10:23:51,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 299 transitions, 2899 flow [2022-07-12 10:23:51,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 299 transitions, 2731 flow, removed 62 selfloop flow, removed 14 redundant places. [2022-07-12 10:23:51,734 INFO L242 Difference]: Finished difference. Result has 323 places, 258 transitions, 2029 flow [2022-07-12 10:23:51,734 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2029, PETRI_PLACES=323, PETRI_TRANSITIONS=258} [2022-07-12 10:23:51,735 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 166 predicate places. [2022-07-12 10:23:51,735 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 258 transitions, 2029 flow [2022-07-12 10:23:51,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:51,736 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:51,736 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:51,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 10:23:51,736 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:51,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:51,736 INFO L85 PathProgramCache]: Analyzing trace with hash 2116462952, now seen corresponding path program 18 times [2022-07-12 10:23:51,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:51,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125509614] [2022-07-12 10:23:51,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:51,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:51,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:51,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:51,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125509614] [2022-07-12 10:23:51,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125509614] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:51,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:51,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:51,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290221377] [2022-07-12 10:23:51,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:51,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:51,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:51,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:51,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:51,899 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:51,899 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 258 transitions, 2029 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:51,899 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:51,900 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:51,900 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:52,369 INFO L129 PetriNetUnfolder]: 405/2034 cut-off events. [2022-07-12 10:23:52,370 INFO L130 PetriNetUnfolder]: For 12631/12744 co-relation queries the response was YES. [2022-07-12 10:23:52,384 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8048 conditions, 2034 events. 405/2034 cut-off events. For 12631/12744 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 15816 event pairs, 311 based on Foata normal form. 4/1946 useless extension candidates. Maximal degree in co-relation 7955. Up to 832 conditions per place. [2022-07-12 10:23:52,388 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 94 selfloop transitions, 38 changer transitions 30/307 dead transitions. [2022-07-12 10:23:52,388 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 307 transitions, 3062 flow [2022-07-12 10:23:52,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:23:52,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:23:52,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2534 transitions. [2022-07-12 10:23:52,390 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7664851784633999 [2022-07-12 10:23:52,390 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2534 transitions. [2022-07-12 10:23:52,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2534 transitions. [2022-07-12 10:23:52,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:52,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2534 transitions. [2022-07-12 10:23:52,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.3684210526316) internal successors, (2534), 19 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:52,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:52,394 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:52,394 INFO L186 Difference]: Start difference. First operand has 323 places, 258 transitions, 2029 flow. Second operand 19 states and 2534 transitions. [2022-07-12 10:23:52,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 307 transitions, 3062 flow [2022-07-12 10:23:52,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 307 transitions, 2921 flow, removed 48 selfloop flow, removed 7 redundant places. [2022-07-12 10:23:52,438 INFO L242 Difference]: Finished difference. Result has 334 places, 266 transitions, 2205 flow [2022-07-12 10:23:52,438 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1938, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2205, PETRI_PLACES=334, PETRI_TRANSITIONS=266} [2022-07-12 10:23:52,439 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 177 predicate places. [2022-07-12 10:23:52,439 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 266 transitions, 2205 flow [2022-07-12 10:23:52,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:52,439 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:52,439 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:52,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 10:23:52,440 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:52,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:52,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1168380126, now seen corresponding path program 19 times [2022-07-12 10:23:52,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:52,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381338587] [2022-07-12 10:23:52,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:52,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:52,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:52,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:52,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381338587] [2022-07-12 10:23:52,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381338587] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:52,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:52,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:52,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303560381] [2022-07-12 10:23:52,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:52,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:52,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:52,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:52,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:52,546 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:52,547 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 266 transitions, 2205 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:52,547 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:52,547 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:52,548 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:53,070 INFO L129 PetriNetUnfolder]: 402/2033 cut-off events. [2022-07-12 10:23:53,070 INFO L130 PetriNetUnfolder]: For 12661/12769 co-relation queries the response was YES. [2022-07-12 10:23:53,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8051 conditions, 2033 events. 402/2033 cut-off events. For 12661/12769 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 15830 event pairs, 307 based on Foata normal form. 3/1945 useless extension candidates. Maximal degree in co-relation 7952. Up to 830 conditions per place. [2022-07-12 10:23:53,089 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 101 selfloop transitions, 34 changer transitions 31/311 dead transitions. [2022-07-12 10:23:53,090 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 311 transitions, 3188 flow [2022-07-12 10:23:53,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:23:53,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:23:53,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2665 transitions. [2022-07-12 10:23:53,091 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7658045977011494 [2022-07-12 10:23:53,092 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2665 transitions. [2022-07-12 10:23:53,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2665 transitions. [2022-07-12 10:23:53,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:53,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2665 transitions. [2022-07-12 10:23:53,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.25) internal successors, (2665), 20 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:53,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:53,096 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:53,096 INFO L186 Difference]: Start difference. First operand has 334 places, 266 transitions, 2205 flow. Second operand 20 states and 2665 transitions. [2022-07-12 10:23:53,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 311 transitions, 3188 flow [2022-07-12 10:23:53,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 311 transitions, 3054 flow, removed 30 selfloop flow, removed 9 redundant places. [2022-07-12 10:23:53,144 INFO L242 Difference]: Finished difference. Result has 344 places, 270 transitions, 2294 flow [2022-07-12 10:23:53,145 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2107, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2294, PETRI_PLACES=344, PETRI_TRANSITIONS=270} [2022-07-12 10:23:53,145 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 187 predicate places. [2022-07-12 10:23:53,145 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 270 transitions, 2294 flow [2022-07-12 10:23:53,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:53,146 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:53,146 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:53,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 10:23:53,146 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:53,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:53,147 INFO L85 PathProgramCache]: Analyzing trace with hash 222130868, now seen corresponding path program 20 times [2022-07-12 10:23:53,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:53,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056627302] [2022-07-12 10:23:53,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:53,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:53,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:53,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:53,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056627302] [2022-07-12 10:23:53,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056627302] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:53,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:53,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:53,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671621993] [2022-07-12 10:23:53,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:53,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:53,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:53,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:53,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:53,248 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:53,249 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 270 transitions, 2294 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:53,249 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:53,249 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:53,249 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:53,723 INFO L129 PetriNetUnfolder]: 399/1973 cut-off events. [2022-07-12 10:23:53,723 INFO L130 PetriNetUnfolder]: For 12192/12308 co-relation queries the response was YES. [2022-07-12 10:23:53,739 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7917 conditions, 1973 events. 399/1973 cut-off events. For 12192/12308 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15259 event pairs, 283 based on Foata normal form. 5/1884 useless extension candidates. Maximal degree in co-relation 7814. Up to 830 conditions per place. [2022-07-12 10:23:53,743 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 94 selfloop transitions, 30 changer transitions 40/309 dead transitions. [2022-07-12 10:23:53,743 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 309 transitions, 3106 flow [2022-07-12 10:23:53,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:23:53,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:23:53,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2921 transitions. [2022-07-12 10:23:53,747 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7630616509926855 [2022-07-12 10:23:53,748 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2921 transitions. [2022-07-12 10:23:53,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2921 transitions. [2022-07-12 10:23:53,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:53,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2921 transitions. [2022-07-12 10:23:53,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.77272727272728) internal successors, (2921), 22 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:53,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:53,752 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:53,752 INFO L186 Difference]: Start difference. First operand has 344 places, 270 transitions, 2294 flow. Second operand 22 states and 2921 transitions. [2022-07-12 10:23:53,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 309 transitions, 3106 flow [2022-07-12 10:23:53,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 309 transitions, 2991 flow, removed 34 selfloop flow, removed 7 redundant places. [2022-07-12 10:23:53,807 INFO L242 Difference]: Finished difference. Result has 358 places, 261 transitions, 2111 flow [2022-07-12 10:23:53,808 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2201, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2111, PETRI_PLACES=358, PETRI_TRANSITIONS=261} [2022-07-12 10:23:53,808 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 201 predicate places. [2022-07-12 10:23:53,808 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 261 transitions, 2111 flow [2022-07-12 10:23:53,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:53,808 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:53,809 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:53,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 10:23:53,809 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:53,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:53,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1328147332, now seen corresponding path program 21 times [2022-07-12 10:23:53,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:53,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757199364] [2022-07-12 10:23:53,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:53,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:53,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:53,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:53,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757199364] [2022-07-12 10:23:53,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757199364] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:53,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:53,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:53,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334881256] [2022-07-12 10:23:53,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:53,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:53,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:53,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:53,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:53,937 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:53,938 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 261 transitions, 2111 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:53,938 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:53,938 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:53,938 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:54,458 INFO L129 PetriNetUnfolder]: 390/1996 cut-off events. [2022-07-12 10:23:54,459 INFO L130 PetriNetUnfolder]: For 12231/12339 co-relation queries the response was YES. [2022-07-12 10:23:54,475 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7756 conditions, 1996 events. 390/1996 cut-off events. For 12231/12339 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 15542 event pairs, 307 based on Foata normal form. 3/1908 useless extension candidates. Maximal degree in co-relation 7647. Up to 830 conditions per place. [2022-07-12 10:23:54,479 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 91 selfloop transitions, 16 changer transitions 43/295 dead transitions. [2022-07-12 10:23:54,480 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 295 transitions, 2825 flow [2022-07-12 10:23:54,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 10:23:54,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-12 10:23:54,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2791 transitions. [2022-07-12 10:23:54,482 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7638204707170224 [2022-07-12 10:23:54,482 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2791 transitions. [2022-07-12 10:23:54,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2791 transitions. [2022-07-12 10:23:54,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:54,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2791 transitions. [2022-07-12 10:23:54,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.9047619047619) internal successors, (2791), 21 states have internal predecessors, (2791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:54,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:54,486 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:54,486 INFO L186 Difference]: Start difference. First operand has 358 places, 261 transitions, 2111 flow. Second operand 21 states and 2791 transitions. [2022-07-12 10:23:54,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 295 transitions, 2825 flow [2022-07-12 10:23:54,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 295 transitions, 2630 flow, removed 39 selfloop flow, removed 25 redundant places. [2022-07-12 10:23:54,536 INFO L242 Difference]: Finished difference. Result has 341 places, 244 transitions, 1732 flow [2022-07-12 10:23:54,536 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1965, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1732, PETRI_PLACES=341, PETRI_TRANSITIONS=244} [2022-07-12 10:23:54,536 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 184 predicate places. [2022-07-12 10:23:54,536 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 244 transitions, 1732 flow [2022-07-12 10:23:54,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:54,537 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:54,537 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:54,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 10:23:54,537 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:54,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:54,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1758735014, now seen corresponding path program 22 times [2022-07-12 10:23:54,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:54,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825373060] [2022-07-12 10:23:54,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:54,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:54,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:54,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:54,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825373060] [2022-07-12 10:23:54,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825373060] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:54,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:54,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:54,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235930736] [2022-07-12 10:23:54,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:54,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:54,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:54,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:54,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:54,630 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:54,630 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 244 transitions, 1732 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:54,630 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:54,631 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:54,631 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:55,030 INFO L129 PetriNetUnfolder]: 375/1884 cut-off events. [2022-07-12 10:23:55,030 INFO L130 PetriNetUnfolder]: For 11013/11129 co-relation queries the response was YES. [2022-07-12 10:23:55,044 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7220 conditions, 1884 events. 375/1884 cut-off events. For 11013/11129 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14308 event pairs, 281 based on Foata normal form. 5/1798 useless extension candidates. Maximal degree in co-relation 7122. Up to 817 conditions per place. [2022-07-12 10:23:55,048 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 76 selfloop transitions, 4 changer transitions 46/271 dead transitions. [2022-07-12 10:23:55,048 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 271 transitions, 2261 flow [2022-07-12 10:23:55,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:23:55,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:23:55,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2652 transitions. [2022-07-12 10:23:55,050 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7620689655172413 [2022-07-12 10:23:55,050 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2652 transitions. [2022-07-12 10:23:55,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2652 transitions. [2022-07-12 10:23:55,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:55,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2652 transitions. [2022-07-12 10:23:55,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.6) internal successors, (2652), 20 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:55,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:55,072 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:55,072 INFO L186 Difference]: Start difference. First operand has 341 places, 244 transitions, 1732 flow. Second operand 20 states and 2652 transitions. [2022-07-12 10:23:55,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 271 transitions, 2261 flow [2022-07-12 10:23:55,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 271 transitions, 2134 flow, removed 25 selfloop flow, removed 24 redundant places. [2022-07-12 10:23:55,110 INFO L242 Difference]: Finished difference. Result has 316 places, 217 transitions, 1255 flow [2022-07-12 10:23:55,110 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1629, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1255, PETRI_PLACES=316, PETRI_TRANSITIONS=217} [2022-07-12 10:23:55,114 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 159 predicate places. [2022-07-12 10:23:55,114 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 217 transitions, 1255 flow [2022-07-12 10:23:55,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:55,114 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:55,114 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:55,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-12 10:23:55,116 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:55,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:55,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1429686126, now seen corresponding path program 23 times [2022-07-12 10:23:55,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:55,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797363093] [2022-07-12 10:23:55,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:55,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:55,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:55,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:55,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797363093] [2022-07-12 10:23:55,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797363093] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:55,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:55,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:55,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434473686] [2022-07-12 10:23:55,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:55,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:55,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:55,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:55,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:55,240 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:55,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 217 transitions, 1255 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:55,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:55,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:55,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:55,761 INFO L129 PetriNetUnfolder]: 394/1934 cut-off events. [2022-07-12 10:23:55,762 INFO L130 PetriNetUnfolder]: For 11131/11241 co-relation queries the response was YES. [2022-07-12 10:23:55,774 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7460 conditions, 1934 events. 394/1934 cut-off events. For 11131/11241 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14769 event pairs, 274 based on Foata normal form. 3/1847 useless extension candidates. Maximal degree in co-relation 7374. Up to 819 conditions per place. [2022-07-12 10:23:55,778 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 23 changer transitions 42/310 dead transitions. [2022-07-12 10:23:55,778 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 310 transitions, 2669 flow [2022-07-12 10:23:55,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 10:23:55,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-12 10:23:55,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3707 transitions. [2022-07-12 10:23:55,780 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7608784893267652 [2022-07-12 10:23:55,780 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3707 transitions. [2022-07-12 10:23:55,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3707 transitions. [2022-07-12 10:23:55,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:55,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3707 transitions. [2022-07-12 10:23:55,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.39285714285714) internal successors, (3707), 28 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:55,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:55,785 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:55,785 INFO L186 Difference]: Start difference. First operand has 316 places, 217 transitions, 1255 flow. Second operand 28 states and 3707 transitions. [2022-07-12 10:23:55,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 310 transitions, 2669 flow [2022-07-12 10:23:55,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 310 transitions, 2500 flow, removed 40 selfloop flow, removed 19 redundant places. [2022-07-12 10:23:55,813 INFO L242 Difference]: Finished difference. Result has 304 places, 230 transitions, 1471 flow [2022-07-12 10:23:55,813 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1205, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1471, PETRI_PLACES=304, PETRI_TRANSITIONS=230} [2022-07-12 10:23:55,813 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 147 predicate places. [2022-07-12 10:23:55,813 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 230 transitions, 1471 flow [2022-07-12 10:23:55,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:55,814 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:55,814 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:55,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-12 10:23:55,814 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:55,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:55,814 INFO L85 PathProgramCache]: Analyzing trace with hash 550604824, now seen corresponding path program 24 times [2022-07-12 10:23:55,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:55,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931167634] [2022-07-12 10:23:55,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:55,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:55,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:55,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:55,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931167634] [2022-07-12 10:23:55,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931167634] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:55,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:55,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:55,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691921345] [2022-07-12 10:23:55,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:55,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:55,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:55,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:55,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:55,902 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:55,903 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 230 transitions, 1471 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:55,903 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:55,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:55,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:56,404 INFO L129 PetriNetUnfolder]: 391/1912 cut-off events. [2022-07-12 10:23:56,404 INFO L130 PetriNetUnfolder]: For 10818/10928 co-relation queries the response was YES. [2022-07-12 10:23:56,416 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7478 conditions, 1912 events. 391/1912 cut-off events. For 10818/10928 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14556 event pairs, 277 based on Foata normal form. 3/1821 useless extension candidates. Maximal degree in co-relation 7386. Up to 817 conditions per place. [2022-07-12 10:23:56,419 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 89 selfloop transitions, 25 changer transitions 42/301 dead transitions. [2022-07-12 10:23:56,419 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 301 transitions, 2710 flow [2022-07-12 10:23:56,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-12 10:23:56,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-12 10:23:56,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3579 transitions. [2022-07-12 10:23:56,421 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7618135376756067 [2022-07-12 10:23:56,421 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3579 transitions. [2022-07-12 10:23:56,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3579 transitions. [2022-07-12 10:23:56,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:56,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3579 transitions. [2022-07-12 10:23:56,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.55555555555554) internal successors, (3579), 27 states have internal predecessors, (3579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:56,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:56,426 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:56,426 INFO L186 Difference]: Start difference. First operand has 304 places, 230 transitions, 1471 flow. Second operand 27 states and 3579 transitions. [2022-07-12 10:23:56,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 301 transitions, 2710 flow [2022-07-12 10:23:56,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 301 transitions, 2546 flow, removed 74 selfloop flow, removed 17 redundant places. [2022-07-12 10:23:56,456 INFO L242 Difference]: Finished difference. Result has 315 places, 234 transitions, 1627 flow [2022-07-12 10:23:56,456 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1627, PETRI_PLACES=315, PETRI_TRANSITIONS=234} [2022-07-12 10:23:56,456 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 158 predicate places. [2022-07-12 10:23:56,457 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 234 transitions, 1627 flow [2022-07-12 10:23:56,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:56,457 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:56,457 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:56,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 10:23:56,457 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:56,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:56,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1446322912, now seen corresponding path program 25 times [2022-07-12 10:23:56,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:56,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384089573] [2022-07-12 10:23:56,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:56,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:56,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:56,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:56,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384089573] [2022-07-12 10:23:56,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384089573] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:56,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:56,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:56,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531776518] [2022-07-12 10:23:56,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:56,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:56,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:56,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:56,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:56,536 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:56,537 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 234 transitions, 1627 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:56,537 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:56,537 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:56,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:56,972 INFO L129 PetriNetUnfolder]: 386/1894 cut-off events. [2022-07-12 10:23:56,973 INFO L130 PetriNetUnfolder]: For 12161/12271 co-relation queries the response was YES. [2022-07-12 10:23:56,988 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7606 conditions, 1894 events. 386/1894 cut-off events. For 12161/12271 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14376 event pairs, 270 based on Foata normal form. 3/1807 useless extension candidates. Maximal degree in co-relation 7508. Up to 820 conditions per place. [2022-07-12 10:23:56,992 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 98 selfloop transitions, 27 changer transitions 37/307 dead transitions. [2022-07-12 10:23:56,993 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 307 transitions, 2901 flow [2022-07-12 10:23:56,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:23:56,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:23:56,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3185 transitions. [2022-07-12 10:23:56,995 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7626915708812261 [2022-07-12 10:23:56,995 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3185 transitions. [2022-07-12 10:23:56,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3185 transitions. [2022-07-12 10:23:56,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:56,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3185 transitions. [2022-07-12 10:23:56,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.70833333333334) internal successors, (3185), 24 states have internal predecessors, (3185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:57,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:57,000 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:57,000 INFO L186 Difference]: Start difference. First operand has 315 places, 234 transitions, 1627 flow. Second operand 24 states and 3185 transitions. [2022-07-12 10:23:57,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 307 transitions, 2901 flow [2022-07-12 10:23:57,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 307 transitions, 2677 flow, removed 93 selfloop flow, removed 20 redundant places. [2022-07-12 10:23:57,045 INFO L242 Difference]: Finished difference. Result has 314 places, 241 transitions, 1750 flow [2022-07-12 10:23:57,045 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1530, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1750, PETRI_PLACES=314, PETRI_TRANSITIONS=241} [2022-07-12 10:23:57,046 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 157 predicate places. [2022-07-12 10:23:57,046 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 241 transitions, 1750 flow [2022-07-12 10:23:57,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:57,047 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:57,047 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:57,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-12 10:23:57,047 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:57,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:57,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1840107906, now seen corresponding path program 26 times [2022-07-12 10:23:57,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:57,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982936435] [2022-07-12 10:23:57,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:57,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:57,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:57,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:57,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982936435] [2022-07-12 10:23:57,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982936435] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:57,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:57,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:57,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605229668] [2022-07-12 10:23:57,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:57,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:57,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:57,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:57,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:57,136 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:57,136 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 241 transitions, 1750 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:57,136 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:57,136 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:57,136 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:57,577 INFO L129 PetriNetUnfolder]: 398/1931 cut-off events. [2022-07-12 10:23:57,577 INFO L130 PetriNetUnfolder]: For 11676/11789 co-relation queries the response was YES. [2022-07-12 10:23:57,591 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7781 conditions, 1931 events. 398/1931 cut-off events. For 11676/11789 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14758 event pairs, 280 based on Foata normal form. 4/1841 useless extension candidates. Maximal degree in co-relation 7686. Up to 831 conditions per place. [2022-07-12 10:23:57,596 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 88 selfloop transitions, 37 changer transitions 36/306 dead transitions. [2022-07-12 10:23:57,596 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 306 transitions, 2972 flow [2022-07-12 10:23:57,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-12 10:23:57,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-12 10:23:57,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3057 transitions. [2022-07-12 10:23:57,598 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7638680659670165 [2022-07-12 10:23:57,598 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3057 transitions. [2022-07-12 10:23:57,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3057 transitions. [2022-07-12 10:23:57,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:57,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3057 transitions. [2022-07-12 10:23:57,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.91304347826087) internal successors, (3057), 23 states have internal predecessors, (3057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:57,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:57,602 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:57,602 INFO L186 Difference]: Start difference. First operand has 314 places, 241 transitions, 1750 flow. Second operand 23 states and 3057 transitions. [2022-07-12 10:23:57,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 306 transitions, 2972 flow [2022-07-12 10:23:57,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 306 transitions, 2814 flow, removed 62 selfloop flow, removed 12 redundant places. [2022-07-12 10:23:57,643 INFO L242 Difference]: Finished difference. Result has 325 places, 251 transitions, 1980 flow [2022-07-12 10:23:57,644 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1980, PETRI_PLACES=325, PETRI_TRANSITIONS=251} [2022-07-12 10:23:57,644 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 168 predicate places. [2022-07-12 10:23:57,644 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 251 transitions, 1980 flow [2022-07-12 10:23:57,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:57,644 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:57,644 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:57,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-12 10:23:57,644 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:57,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:57,645 INFO L85 PathProgramCache]: Analyzing trace with hash 138356410, now seen corresponding path program 27 times [2022-07-12 10:23:57,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:57,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934148203] [2022-07-12 10:23:57,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:57,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:57,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:57,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:57,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934148203] [2022-07-12 10:23:57,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934148203] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:57,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:57,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:57,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242314742] [2022-07-12 10:23:57,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:57,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:57,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:57,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:57,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:57,729 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:57,730 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 251 transitions, 1980 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:57,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:57,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:57,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:58,210 INFO L129 PetriNetUnfolder]: 395/1924 cut-off events. [2022-07-12 10:23:58,211 INFO L130 PetriNetUnfolder]: For 12200/12316 co-relation queries the response was YES. [2022-07-12 10:23:58,226 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7852 conditions, 1924 events. 395/1924 cut-off events. For 12200/12316 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14645 event pairs, 277 based on Foata normal form. 5/1836 useless extension candidates. Maximal degree in co-relation 7751. Up to 829 conditions per place. [2022-07-12 10:23:58,232 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 97 selfloop transitions, 33 changer transitions 37/312 dead transitions. [2022-07-12 10:23:58,232 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 312 transitions, 3228 flow [2022-07-12 10:23:58,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:23:58,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:23:58,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3190 transitions. [2022-07-12 10:23:58,234 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7638888888888888 [2022-07-12 10:23:58,234 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3190 transitions. [2022-07-12 10:23:58,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3190 transitions. [2022-07-12 10:23:58,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:58,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3190 transitions. [2022-07-12 10:23:58,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.91666666666666) internal successors, (3190), 24 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:58,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:58,239 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:58,239 INFO L186 Difference]: Start difference. First operand has 325 places, 251 transitions, 1980 flow. Second operand 24 states and 3190 transitions. [2022-07-12 10:23:58,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 312 transitions, 3228 flow [2022-07-12 10:23:58,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 312 transitions, 3002 flow, removed 83 selfloop flow, removed 14 redundant places. [2022-07-12 10:23:58,290 INFO L242 Difference]: Finished difference. Result has 335 places, 255 transitions, 2075 flow [2022-07-12 10:23:58,290 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1866, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2075, PETRI_PLACES=335, PETRI_TRANSITIONS=255} [2022-07-12 10:23:58,299 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 178 predicate places. [2022-07-12 10:23:58,299 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 255 transitions, 2075 flow [2022-07-12 10:23:58,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:58,300 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:58,300 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:58,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-12 10:23:58,300 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:58,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:58,301 INFO L85 PathProgramCache]: Analyzing trace with hash -489816904, now seen corresponding path program 28 times [2022-07-12 10:23:58,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:58,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296271027] [2022-07-12 10:23:58,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:58,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:58,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:58,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:58,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296271027] [2022-07-12 10:23:58,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296271027] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:58,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:58,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:58,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920452962] [2022-07-12 10:23:58,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:58,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:58,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:58,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:58,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:58,404 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:58,405 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 255 transitions, 2075 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:58,405 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:58,405 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:58,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:58,850 INFO L129 PetriNetUnfolder]: 389/1912 cut-off events. [2022-07-12 10:23:58,851 INFO L130 PetriNetUnfolder]: For 11873/11989 co-relation queries the response was YES. [2022-07-12 10:23:58,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7714 conditions, 1912 events. 389/1912 cut-off events. For 11873/11989 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14611 event pairs, 273 based on Foata normal form. 5/1827 useless extension candidates. Maximal degree in co-relation 7609. Up to 831 conditions per place. [2022-07-12 10:23:58,869 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 101 selfloop transitions, 35 changer transitions 32/313 dead transitions. [2022-07-12 10:23:58,869 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 313 transitions, 3119 flow [2022-07-12 10:23:58,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:23:58,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:23:58,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2663 transitions. [2022-07-12 10:23:58,871 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7652298850574712 [2022-07-12 10:23:58,871 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2663 transitions. [2022-07-12 10:23:58,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2663 transitions. [2022-07-12 10:23:58,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:58,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2663 transitions. [2022-07-12 10:23:58,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.15) internal successors, (2663), 20 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) [2022-07-12 10:23:58,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:58,875 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:58,875 INFO L186 Difference]: Start difference. First operand has 335 places, 255 transitions, 2075 flow. Second operand 20 states and 2663 transitions. [2022-07-12 10:23:58,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 313 transitions, 3119 flow [2022-07-12 10:23:58,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 313 transitions, 2953 flow, removed 68 selfloop flow, removed 12 redundant places. [2022-07-12 10:23:58,925 INFO L242 Difference]: Finished difference. Result has 336 places, 262 transitions, 2194 flow [2022-07-12 10:23:58,925 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1968, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2194, PETRI_PLACES=336, PETRI_TRANSITIONS=262} [2022-07-12 10:23:58,926 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 179 predicate places. [2022-07-12 10:23:58,926 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 262 transitions, 2194 flow [2022-07-12 10:23:58,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:58,926 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:58,927 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:58,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-12 10:23:58,927 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:58,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:58,927 INFO L85 PathProgramCache]: Analyzing trace with hash -966183238, now seen corresponding path program 29 times [2022-07-12 10:23:58,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:58,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77360747] [2022-07-12 10:23:58,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:58,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:58,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:59,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:59,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:59,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77360747] [2022-07-12 10:23:59,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77360747] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:59,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:59,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:59,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334959259] [2022-07-12 10:23:59,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:59,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:59,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:59,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:59,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:59,024 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:59,024 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 262 transitions, 2194 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:59,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:59,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:59,025 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:59,458 INFO L129 PetriNetUnfolder]: 393/1931 cut-off events. [2022-07-12 10:23:59,459 INFO L130 PetriNetUnfolder]: For 11584/11702 co-relation queries the response was YES. [2022-07-12 10:23:59,474 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7828 conditions, 1931 events. 393/1931 cut-off events. For 11584/11702 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14744 event pairs, 273 based on Foata normal form. 5/1844 useless extension candidates. Maximal degree in co-relation 7724. Up to 834 conditions per place. [2022-07-12 10:23:59,479 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 90 selfloop transitions, 48 changer transitions 31/314 dead transitions. [2022-07-12 10:23:59,480 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 314 transitions, 3260 flow [2022-07-12 10:23:59,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:23:59,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:23:59,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2535 transitions. [2022-07-12 10:23:59,485 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7667876588021778 [2022-07-12 10:23:59,485 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2535 transitions. [2022-07-12 10:23:59,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2535 transitions. [2022-07-12 10:23:59,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:59,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2535 transitions. [2022-07-12 10:23:59,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.42105263157896) internal successors, (2535), 19 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:59,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:59,489 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:59,489 INFO L186 Difference]: Start difference. First operand has 336 places, 262 transitions, 2194 flow. Second operand 19 states and 2535 transitions. [2022-07-12 10:23:59,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 314 transitions, 3260 flow [2022-07-12 10:23:59,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 314 transitions, 3146 flow, removed 35 selfloop flow, removed 7 redundant places. [2022-07-12 10:23:59,546 INFO L242 Difference]: Finished difference. Result has 347 places, 270 transitions, 2409 flow [2022-07-12 10:23:59,546 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2104, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2409, PETRI_PLACES=347, PETRI_TRANSITIONS=270} [2022-07-12 10:23:59,546 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 190 predicate places. [2022-07-12 10:23:59,547 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 270 transitions, 2409 flow [2022-07-12 10:23:59,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:59,548 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:59,548 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:59,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-12 10:23:59,548 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:59,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:59,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1556814568, now seen corresponding path program 30 times [2022-07-12 10:23:59,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:59,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164140163] [2022-07-12 10:23:59,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:59,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:59,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:59,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:59,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164140163] [2022-07-12 10:23:59,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164140163] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:59,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:59,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:23:59,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543551676] [2022-07-12 10:23:59,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:59,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:23:59,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:59,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:23:59,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:23:59,642 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:23:59,643 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 270 transitions, 2409 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:59,643 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:59,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:23:59,643 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:00,059 INFO L129 PetriNetUnfolder]: 390/1923 cut-off events. [2022-07-12 10:24:00,059 INFO L130 PetriNetUnfolder]: For 11801/11915 co-relation queries the response was YES. [2022-07-12 10:24:00,074 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7866 conditions, 1923 events. 390/1923 cut-off events. For 11801/11915 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14712 event pairs, 270 based on Foata normal form. 4/1835 useless extension candidates. Maximal degree in co-relation 7756. Up to 832 conditions per place. [2022-07-12 10:24:00,079 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 97 selfloop transitions, 44 changer transitions 31/317 dead transitions. [2022-07-12 10:24:00,079 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 317 transitions, 3423 flow [2022-07-12 10:24:00,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:24:00,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:24:00,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2666 transitions. [2022-07-12 10:24:00,081 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7660919540229885 [2022-07-12 10:24:00,081 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2666 transitions. [2022-07-12 10:24:00,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2666 transitions. [2022-07-12 10:24:00,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:00,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2666 transitions. [2022-07-12 10:24:00,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.3) internal successors, (2666), 20 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:00,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:00,084 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:00,084 INFO L186 Difference]: Start difference. First operand has 347 places, 270 transitions, 2409 flow. Second operand 20 states and 2666 transitions. [2022-07-12 10:24:00,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 317 transitions, 3423 flow [2022-07-12 10:24:00,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 317 transitions, 3258 flow, removed 36 selfloop flow, removed 9 redundant places. [2022-07-12 10:24:00,140 INFO L242 Difference]: Finished difference. Result has 358 places, 276 transitions, 2544 flow [2022-07-12 10:24:00,140 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2281, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2544, PETRI_PLACES=358, PETRI_TRANSITIONS=276} [2022-07-12 10:24:00,140 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 201 predicate places. [2022-07-12 10:24:00,140 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 276 transitions, 2544 flow [2022-07-12 10:24:00,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:00,141 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:00,141 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:00,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-12 10:24:00,141 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:00,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:00,141 INFO L85 PathProgramCache]: Analyzing trace with hash -584237514, now seen corresponding path program 31 times [2022-07-12 10:24:00,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:00,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726152114] [2022-07-12 10:24:00,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:00,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:00,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:00,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:00,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:00,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726152114] [2022-07-12 10:24:00,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726152114] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:00,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:00,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:00,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986007422] [2022-07-12 10:24:00,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:00,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:00,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:00,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:00,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:00,229 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:00,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 276 transitions, 2544 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:00,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:00,229 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:00,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:00,669 INFO L129 PetriNetUnfolder]: 387/1914 cut-off events. [2022-07-12 10:24:00,669 INFO L130 PetriNetUnfolder]: For 11854/11964 co-relation queries the response was YES. [2022-07-12 10:24:00,687 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7839 conditions, 1914 events. 387/1914 cut-off events. For 11854/11964 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14638 event pairs, 266 based on Foata normal form. 3/1824 useless extension candidates. Maximal degree in co-relation 7724. Up to 828 conditions per place. [2022-07-12 10:24:00,691 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 107 selfloop transitions, 38 changer transitions 32/322 dead transitions. [2022-07-12 10:24:00,692 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 322 transitions, 3565 flow [2022-07-12 10:24:00,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:24:00,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:24:00,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2668 transitions. [2022-07-12 10:24:00,693 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2022-07-12 10:24:00,693 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2668 transitions. [2022-07-12 10:24:00,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2668 transitions. [2022-07-12 10:24:00,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:00,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2668 transitions. [2022-07-12 10:24:00,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.4) internal successors, (2668), 20 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:00,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:00,697 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:00,697 INFO L186 Difference]: Start difference. First operand has 358 places, 276 transitions, 2544 flow. Second operand 20 states and 2668 transitions. [2022-07-12 10:24:00,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 322 transitions, 3565 flow [2022-07-12 10:24:00,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 322 transitions, 3421 flow, removed 43 selfloop flow, removed 8 redundant places. [2022-07-12 10:24:00,762 INFO L242 Difference]: Finished difference. Result has 368 places, 280 transitions, 2630 flow [2022-07-12 10:24:00,763 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2426, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2630, PETRI_PLACES=368, PETRI_TRANSITIONS=280} [2022-07-12 10:24:00,763 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 211 predicate places. [2022-07-12 10:24:00,763 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 280 transitions, 2630 flow [2022-07-12 10:24:00,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:00,763 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:00,764 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:00,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-12 10:24:00,764 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:00,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:00,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1812748130, now seen corresponding path program 32 times [2022-07-12 10:24:00,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:00,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037338836] [2022-07-12 10:24:00,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:00,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:00,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:00,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:00,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037338836] [2022-07-12 10:24:00,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037338836] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:00,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:00,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:00,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187836318] [2022-07-12 10:24:00,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:00,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:00,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:00,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:00,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:00,862 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:00,863 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 280 transitions, 2630 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:00,863 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:00,863 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:00,863 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:01,286 INFO L129 PetriNetUnfolder]: 377/1890 cut-off events. [2022-07-12 10:24:01,287 INFO L130 PetriNetUnfolder]: For 11403/11513 co-relation queries the response was YES. [2022-07-12 10:24:01,302 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7611 conditions, 1890 events. 377/1890 cut-off events. For 11403/11513 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14442 event pairs, 265 based on Foata normal form. 3/1804 useless extension candidates. Maximal degree in co-relation 7492. Up to 821 conditions per place. [2022-07-12 10:24:01,305 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 107 selfloop transitions, 20 changer transitions 47/319 dead transitions. [2022-07-12 10:24:01,306 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 319 transitions, 3350 flow [2022-07-12 10:24:01,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:24:01,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:24:01,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2532 transitions. [2022-07-12 10:24:01,311 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7658802177858439 [2022-07-12 10:24:01,311 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2532 transitions. [2022-07-12 10:24:01,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2532 transitions. [2022-07-12 10:24:01,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:01,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2532 transitions. [2022-07-12 10:24:01,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.26315789473685) internal successors, (2532), 19 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:01,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:01,315 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:01,315 INFO L186 Difference]: Start difference. First operand has 368 places, 280 transitions, 2630 flow. Second operand 19 states and 2532 transitions. [2022-07-12 10:24:01,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 319 transitions, 3350 flow [2022-07-12 10:24:01,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 319 transitions, 3221 flow, removed 46 selfloop flow, removed 7 redundant places. [2022-07-12 10:24:01,406 INFO L242 Difference]: Finished difference. Result has 374 places, 256 transitions, 2133 flow [2022-07-12 10:24:01,407 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2507, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2133, PETRI_PLACES=374, PETRI_TRANSITIONS=256} [2022-07-12 10:24:01,407 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 217 predicate places. [2022-07-12 10:24:01,407 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 256 transitions, 2133 flow [2022-07-12 10:24:01,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:01,408 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:01,409 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:01,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-12 10:24:01,411 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:01,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:01,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1977702522, now seen corresponding path program 33 times [2022-07-12 10:24:01,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:01,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608166650] [2022-07-12 10:24:01,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:01,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:01,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:01,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:01,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608166650] [2022-07-12 10:24:01,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608166650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:01,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:01,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:01,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866123125] [2022-07-12 10:24:01,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:01,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:01,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:01,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:01,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:01,528 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:01,528 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 256 transitions, 2133 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:01,528 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:01,528 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:01,529 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:01,979 INFO L129 PetriNetUnfolder]: 372/1864 cut-off events. [2022-07-12 10:24:01,979 INFO L130 PetriNetUnfolder]: For 10777/10887 co-relation queries the response was YES. [2022-07-12 10:24:01,995 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7384 conditions, 1864 events. 372/1864 cut-off events. For 10777/10887 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14145 event pairs, 265 based on Foata normal form. 3/1775 useless extension candidates. Maximal degree in co-relation 7264. Up to 818 conditions per place. [2022-07-12 10:24:01,999 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 88 selfloop transitions, 23 changer transitions 41/297 dead transitions. [2022-07-12 10:24:01,999 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 297 transitions, 2936 flow [2022-07-12 10:24:01,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 10:24:01,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-12 10:24:02,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2795 transitions. [2022-07-12 10:24:02,000 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7649151614668857 [2022-07-12 10:24:02,000 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2795 transitions. [2022-07-12 10:24:02,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2795 transitions. [2022-07-12 10:24:02,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:02,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2795 transitions. [2022-07-12 10:24:02,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 133.0952380952381) internal successors, (2795), 21 states have internal predecessors, (2795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:02,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:02,004 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:02,004 INFO L186 Difference]: Start difference. First operand has 374 places, 256 transitions, 2133 flow. Second operand 21 states and 2795 transitions. [2022-07-12 10:24:02,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 297 transitions, 2936 flow [2022-07-12 10:24:02,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 297 transitions, 2720 flow, removed 33 selfloop flow, removed 24 redundant places. [2022-07-12 10:24:02,057 INFO L242 Difference]: Finished difference. Result has 350 places, 247 transitions, 1877 flow [2022-07-12 10:24:02,057 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1982, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1877, PETRI_PLACES=350, PETRI_TRANSITIONS=247} [2022-07-12 10:24:02,058 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 193 predicate places. [2022-07-12 10:24:02,058 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 247 transitions, 1877 flow [2022-07-12 10:24:02,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:02,058 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:02,058 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:02,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-12 10:24:02,058 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:02,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:02,058 INFO L85 PathProgramCache]: Analyzing trace with hash 297360238, now seen corresponding path program 34 times [2022-07-12 10:24:02,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:02,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479352] [2022-07-12 10:24:02,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:02,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:02,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:02,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:02,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479352] [2022-07-12 10:24:02,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479352] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:02,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:02,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:02,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836349411] [2022-07-12 10:24:02,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:02,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:02,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:02,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:02,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:02,174 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:02,174 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 247 transitions, 1877 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:02,174 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:02,175 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:02,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:02,634 INFO L129 PetriNetUnfolder]: 363/1837 cut-off events. [2022-07-12 10:24:02,634 INFO L130 PetriNetUnfolder]: For 9577/9687 co-relation queries the response was YES. [2022-07-12 10:24:02,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6932 conditions, 1837 events. 363/1837 cut-off events. For 9577/9687 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 13955 event pairs, 266 based on Foata normal form. 3/1748 useless extension candidates. Maximal degree in co-relation 6820. Up to 812 conditions per place. [2022-07-12 10:24:02,653 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 75 selfloop transitions, 18 changer transitions 42/280 dead transitions. [2022-07-12 10:24:02,653 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 280 transitions, 2477 flow [2022-07-12 10:24:02,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:24:02,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:24:02,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2921 transitions. [2022-07-12 10:24:02,655 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7630616509926855 [2022-07-12 10:24:02,655 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2921 transitions. [2022-07-12 10:24:02,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2921 transitions. [2022-07-12 10:24:02,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:02,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2921 transitions. [2022-07-12 10:24:02,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.77272727272728) internal successors, (2921), 22 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:02,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:02,659 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:02,659 INFO L186 Difference]: Start difference. First operand has 350 places, 247 transitions, 1877 flow. Second operand 22 states and 2921 transitions. [2022-07-12 10:24:02,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 280 transitions, 2477 flow [2022-07-12 10:24:02,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 280 transitions, 2322 flow, removed 25 selfloop flow, removed 24 redundant places. [2022-07-12 10:24:02,699 INFO L242 Difference]: Finished difference. Result has 336 places, 230 transitions, 1544 flow [2022-07-12 10:24:02,700 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1544, PETRI_PLACES=336, PETRI_TRANSITIONS=230} [2022-07-12 10:24:02,700 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 179 predicate places. [2022-07-12 10:24:02,700 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 230 transitions, 1544 flow [2022-07-12 10:24:02,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:02,700 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:02,701 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:02,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-12 10:24:02,701 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:02,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:02,701 INFO L85 PathProgramCache]: Analyzing trace with hash -218078410, now seen corresponding path program 35 times [2022-07-12 10:24:02,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:02,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54461152] [2022-07-12 10:24:02,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:02,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:02,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:02,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:02,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54461152] [2022-07-12 10:24:02,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54461152] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:02,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:02,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:02,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574970903] [2022-07-12 10:24:02,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:02,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:02,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:02,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:02,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:02,784 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:02,785 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 230 transitions, 1544 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:02,785 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:02,785 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:02,785 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:03,271 INFO L129 PetriNetUnfolder]: 349/1752 cut-off events. [2022-07-12 10:24:03,271 INFO L130 PetriNetUnfolder]: For 8722/8832 co-relation queries the response was YES. [2022-07-12 10:24:03,284 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6473 conditions, 1752 events. 349/1752 cut-off events. For 8722/8832 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 13020 event pairs, 263 based on Foata normal form. 3/1665 useless extension candidates. Maximal degree in co-relation 6369. Up to 788 conditions per place. [2022-07-12 10:24:03,287 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 64 selfloop transitions, 2 changer transitions 49/258 dead transitions. [2022-07-12 10:24:03,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 258 transitions, 2015 flow [2022-07-12 10:24:03,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:24:03,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:24:03,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2653 transitions. [2022-07-12 10:24:03,289 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7623563218390804 [2022-07-12 10:24:03,289 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2653 transitions. [2022-07-12 10:24:03,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2653 transitions. [2022-07-12 10:24:03,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:03,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2653 transitions. [2022-07-12 10:24:03,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.65) internal successors, (2653), 20 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:03,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:03,293 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:03,293 INFO L186 Difference]: Start difference. First operand has 336 places, 230 transitions, 1544 flow. Second operand 20 states and 2653 transitions. [2022-07-12 10:24:03,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 258 transitions, 2015 flow [2022-07-12 10:24:03,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 258 transitions, 1885 flow, removed 25 selfloop flow, removed 25 redundant places. [2022-07-12 10:24:03,324 INFO L242 Difference]: Finished difference. Result has 311 places, 201 transitions, 1054 flow [2022-07-12 10:24:03,324 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1054, PETRI_PLACES=311, PETRI_TRANSITIONS=201} [2022-07-12 10:24:03,324 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 154 predicate places. [2022-07-12 10:24:03,324 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 201 transitions, 1054 flow [2022-07-12 10:24:03,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:03,325 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:03,325 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:03,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-12 10:24:03,325 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:03,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:03,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1844961244, now seen corresponding path program 2 times [2022-07-12 10:24:03,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:03,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114561201] [2022-07-12 10:24:03,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:03,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:03,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:03,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:03,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114561201] [2022-07-12 10:24:03,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114561201] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:03,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:03,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:03,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771427399] [2022-07-12 10:24:03,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:03,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:03,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:03,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:03,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:03,425 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:03,426 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 201 transitions, 1054 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:03,426 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:03,426 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:03,426 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:03,831 INFO L129 PetriNetUnfolder]: 373/1781 cut-off events. [2022-07-12 10:24:03,831 INFO L130 PetriNetUnfolder]: For 8172/8238 co-relation queries the response was YES. [2022-07-12 10:24:03,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6350 conditions, 1781 events. 373/1781 cut-off events. For 8172/8238 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13170 event pairs, 234 based on Foata normal form. 10/1699 useless extension candidates. Maximal degree in co-relation 6260. Up to 732 conditions per place. [2022-07-12 10:24:03,846 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 93 selfloop transitions, 14 changer transitions 32/283 dead transitions. [2022-07-12 10:24:03,846 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 283 transitions, 2087 flow [2022-07-12 10:24:03,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:24:03,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:24:03,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2926 transitions. [2022-07-12 10:24:03,848 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2022-07-12 10:24:03,848 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2926 transitions. [2022-07-12 10:24:03,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2926 transitions. [2022-07-12 10:24:03,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:03,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2926 transitions. [2022-07-12 10:24:03,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 133.0) internal successors, (2926), 22 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:03,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:03,852 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:03,852 INFO L186 Difference]: Start difference. First operand has 311 places, 201 transitions, 1054 flow. Second operand 22 states and 2926 transitions. [2022-07-12 10:24:03,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 283 transitions, 2087 flow [2022-07-12 10:24:03,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 283 transitions, 2001 flow, removed 35 selfloop flow, removed 25 redundant places. [2022-07-12 10:24:03,876 INFO L242 Difference]: Finished difference. Result has 285 places, 214 transitions, 1204 flow [2022-07-12 10:24:03,876 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1204, PETRI_PLACES=285, PETRI_TRANSITIONS=214} [2022-07-12 10:24:03,877 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 128 predicate places. [2022-07-12 10:24:03,877 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 214 transitions, 1204 flow [2022-07-12 10:24:03,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:03,877 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:03,877 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:03,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-12 10:24:03,877 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:03,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:03,879 INFO L85 PathProgramCache]: Analyzing trace with hash -206622138, now seen corresponding path program 3 times [2022-07-12 10:24:03,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:03,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704829993] [2022-07-12 10:24:03,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:03,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:03,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:03,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:03,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:03,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704829993] [2022-07-12 10:24:03,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704829993] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:03,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:03,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:03,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374638813] [2022-07-12 10:24:03,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:03,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:03,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:03,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:03,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:03,996 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:03,996 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 214 transitions, 1204 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:03,996 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:03,996 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:03,996 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:04,496 INFO L129 PetriNetUnfolder]: 372/1799 cut-off events. [2022-07-12 10:24:04,497 INFO L130 PetriNetUnfolder]: For 11216/11282 co-relation queries the response was YES. [2022-07-12 10:24:04,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7063 conditions, 1799 events. 372/1799 cut-off events. For 11216/11282 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13460 event pairs, 219 based on Foata normal form. 10/1725 useless extension candidates. Maximal degree in co-relation 6976. Up to 679 conditions per place. [2022-07-12 10:24:04,512 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 155 selfloop transitions, 12 changer transitions 46/357 dead transitions. [2022-07-12 10:24:04,512 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 357 transitions, 3090 flow [2022-07-12 10:24:04,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-12 10:24:04,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-12 10:24:04,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4111 transitions. [2022-07-12 10:24:04,514 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7621431219873934 [2022-07-12 10:24:04,514 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4111 transitions. [2022-07-12 10:24:04,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4111 transitions. [2022-07-12 10:24:04,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:04,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4111 transitions. [2022-07-12 10:24:04,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 132.61290322580646) internal successors, (4111), 31 states have internal predecessors, (4111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:04,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:04,552 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:04,552 INFO L186 Difference]: Start difference. First operand has 285 places, 214 transitions, 1204 flow. Second operand 31 states and 4111 transitions. [2022-07-12 10:24:04,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 357 transitions, 3090 flow [2022-07-12 10:24:04,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 357 transitions, 2902 flow, removed 94 selfloop flow, removed 9 redundant places. [2022-07-12 10:24:04,594 INFO L242 Difference]: Finished difference. Result has 319 places, 217 transitions, 1301 flow [2022-07-12 10:24:04,594 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1301, PETRI_PLACES=319, PETRI_TRANSITIONS=217} [2022-07-12 10:24:04,595 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 162 predicate places. [2022-07-12 10:24:04,595 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 217 transitions, 1301 flow [2022-07-12 10:24:04,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:04,595 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:04,595 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:04,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-12 10:24:04,596 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:04,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:04,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1403486140, now seen corresponding path program 4 times [2022-07-12 10:24:04,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:04,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738145369] [2022-07-12 10:24:04,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:04,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:04,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:04,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:04,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738145369] [2022-07-12 10:24:04,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738145369] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:04,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:04,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:04,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096317522] [2022-07-12 10:24:04,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:04,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:04,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:04,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:04,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:04,676 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:04,677 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 217 transitions, 1301 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:04,677 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:04,677 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:04,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:05,196 INFO L129 PetriNetUnfolder]: 393/1881 cut-off events. [2022-07-12 10:24:05,196 INFO L130 PetriNetUnfolder]: For 14911/14977 co-relation queries the response was YES. [2022-07-12 10:24:05,210 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7971 conditions, 1881 events. 393/1881 cut-off events. For 14911/14977 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 14275 event pairs, 246 based on Foata normal form. 10/1800 useless extension candidates. Maximal degree in co-relation 7866. Up to 787 conditions per place. [2022-07-12 10:24:05,214 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 112 selfloop transitions, 16 changer transitions 40/312 dead transitions. [2022-07-12 10:24:05,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 312 transitions, 3030 flow [2022-07-12 10:24:05,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 10:24:05,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-12 10:24:05,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3707 transitions. [2022-07-12 10:24:05,216 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7608784893267652 [2022-07-12 10:24:05,216 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3707 transitions. [2022-07-12 10:24:05,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3707 transitions. [2022-07-12 10:24:05,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:05,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3707 transitions. [2022-07-12 10:24:05,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.39285714285714) internal successors, (3707), 28 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:05,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:05,221 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:05,221 INFO L186 Difference]: Start difference. First operand has 319 places, 217 transitions, 1301 flow. Second operand 28 states and 3707 transitions. [2022-07-12 10:24:05,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 312 transitions, 3030 flow [2022-07-12 10:24:05,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 312 transitions, 2712 flow, removed 140 selfloop flow, removed 20 redundant places. [2022-07-12 10:24:05,264 INFO L242 Difference]: Finished difference. Result has 324 places, 227 transitions, 1444 flow [2022-07-12 10:24:05,264 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1231, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1444, PETRI_PLACES=324, PETRI_TRANSITIONS=227} [2022-07-12 10:24:05,264 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 167 predicate places. [2022-07-12 10:24:05,264 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 227 transitions, 1444 flow [2022-07-12 10:24:05,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:05,264 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:05,265 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:05,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-12 10:24:05,265 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:05,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:05,265 INFO L85 PathProgramCache]: Analyzing trace with hash -951681074, now seen corresponding path program 5 times [2022-07-12 10:24:05,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:05,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262102953] [2022-07-12 10:24:05,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:05,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:05,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:05,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:05,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262102953] [2022-07-12 10:24:05,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262102953] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:05,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:05,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:05,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258290502] [2022-07-12 10:24:05,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:05,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:05,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:05,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:05,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:05,395 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:05,395 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 227 transitions, 1444 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:05,395 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:05,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:05,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:05,947 INFO L129 PetriNetUnfolder]: 420/2018 cut-off events. [2022-07-12 10:24:05,947 INFO L130 PetriNetUnfolder]: For 16269/16340 co-relation queries the response was YES. [2022-07-12 10:24:05,963 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8639 conditions, 2018 events. 420/2018 cut-off events. For 16269/16340 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 15563 event pairs, 267 based on Foata normal form. 10/1939 useless extension candidates. Maximal degree in co-relation 8532. Up to 742 conditions per place. [2022-07-12 10:24:05,967 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 102 selfloop transitions, 24 changer transitions 40/310 dead transitions. [2022-07-12 10:24:05,967 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 310 transitions, 3043 flow [2022-07-12 10:24:05,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-12 10:24:05,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-12 10:24:05,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3449 transitions. [2022-07-12 10:24:05,969 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7623784261715296 [2022-07-12 10:24:05,969 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3449 transitions. [2022-07-12 10:24:05,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3449 transitions. [2022-07-12 10:24:05,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:05,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3449 transitions. [2022-07-12 10:24:05,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.65384615384616) internal successors, (3449), 26 states have internal predecessors, (3449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:05,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:05,974 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:05,974 INFO L186 Difference]: Start difference. First operand has 324 places, 227 transitions, 1444 flow. Second operand 26 states and 3449 transitions. [2022-07-12 10:24:05,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 310 transitions, 3043 flow [2022-07-12 10:24:06,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 310 transitions, 2791 flow, removed 126 selfloop flow, removed 17 redundant places. [2022-07-12 10:24:06,018 INFO L242 Difference]: Finished difference. Result has 335 places, 237 transitions, 1670 flow [2022-07-12 10:24:06,018 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1388, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1670, PETRI_PLACES=335, PETRI_TRANSITIONS=237} [2022-07-12 10:24:06,019 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 178 predicate places. [2022-07-12 10:24:06,019 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 237 transitions, 1670 flow [2022-07-12 10:24:06,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:06,019 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:06,019 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:06,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-12 10:24:06,019 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:06,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:06,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1565654670, now seen corresponding path program 6 times [2022-07-12 10:24:06,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:06,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724501700] [2022-07-12 10:24:06,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:06,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:06,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:06,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:06,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:06,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724501700] [2022-07-12 10:24:06,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724501700] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:06,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:06,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:06,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510124870] [2022-07-12 10:24:06,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:06,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:06,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:06,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:06,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:06,105 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:06,106 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 237 transitions, 1670 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:06,106 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:06,106 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:06,106 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:06,664 INFO L129 PetriNetUnfolder]: 413/1953 cut-off events. [2022-07-12 10:24:06,664 INFO L130 PetriNetUnfolder]: For 18007/18086 co-relation queries the response was YES. [2022-07-12 10:24:06,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8933 conditions, 1953 events. 413/1953 cut-off events. For 18007/18086 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 14975 event pairs, 263 based on Foata normal form. 11/1864 useless extension candidates. Maximal degree in co-relation 8819. Up to 832 conditions per place. [2022-07-12 10:24:06,684 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 118 selfloop transitions, 30 changer transitions 36/328 dead transitions. [2022-07-12 10:24:06,684 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 328 transitions, 3657 flow [2022-07-12 10:24:06,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-12 10:24:06,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-07-12 10:24:06,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3312 transitions. [2022-07-12 10:24:06,686 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7613793103448275 [2022-07-12 10:24:06,686 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3312 transitions. [2022-07-12 10:24:06,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3312 transitions. [2022-07-12 10:24:06,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:06,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3312 transitions. [2022-07-12 10:24:06,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 132.48) internal successors, (3312), 25 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:06,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:06,690 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:06,691 INFO L186 Difference]: Start difference. First operand has 335 places, 237 transitions, 1670 flow. Second operand 25 states and 3312 transitions. [2022-07-12 10:24:06,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 328 transitions, 3657 flow [2022-07-12 10:24:06,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 328 transitions, 3270 flow, removed 184 selfloop flow, removed 16 redundant places. [2022-07-12 10:24:06,748 INFO L242 Difference]: Finished difference. Result has 346 places, 254 transitions, 2026 flow [2022-07-12 10:24:06,748 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2026, PETRI_PLACES=346, PETRI_TRANSITIONS=254} [2022-07-12 10:24:06,748 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 189 predicate places. [2022-07-12 10:24:06,748 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 254 transitions, 2026 flow [2022-07-12 10:24:06,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:06,749 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:06,749 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:06,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-12 10:24:06,749 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:06,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:06,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1053349864, now seen corresponding path program 7 times [2022-07-12 10:24:06,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:06,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255902675] [2022-07-12 10:24:06,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:06,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:06,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:06,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:06,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255902675] [2022-07-12 10:24:06,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255902675] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:06,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:06,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:06,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000592637] [2022-07-12 10:24:06,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:06,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:06,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:06,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:06,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:06,829 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:06,830 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 254 transitions, 2026 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:06,830 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:06,830 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:06,830 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:07,327 INFO L129 PetriNetUnfolder]: 409/1958 cut-off events. [2022-07-12 10:24:07,328 INFO L130 PetriNetUnfolder]: For 18408/18495 co-relation queries the response was YES. [2022-07-12 10:24:07,345 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8973 conditions, 1958 events. 409/1958 cut-off events. For 18408/18495 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 15071 event pairs, 254 based on Foata normal form. 16/1878 useless extension candidates. Maximal degree in co-relation 8853. Up to 816 conditions per place. [2022-07-12 10:24:07,350 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 123 selfloop transitions, 34 changer transitions 34/335 dead transitions. [2022-07-12 10:24:07,350 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 335 transitions, 3754 flow [2022-07-12 10:24:07,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:24:07,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:24:07,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3183 transitions. [2022-07-12 10:24:07,352 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7622126436781609 [2022-07-12 10:24:07,353 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3183 transitions. [2022-07-12 10:24:07,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3183 transitions. [2022-07-12 10:24:07,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:07,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3183 transitions. [2022-07-12 10:24:07,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.625) internal successors, (3183), 24 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:07,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:07,357 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:07,357 INFO L186 Difference]: Start difference. First operand has 346 places, 254 transitions, 2026 flow. Second operand 24 states and 3183 transitions. [2022-07-12 10:24:07,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 335 transitions, 3754 flow [2022-07-12 10:24:07,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 335 transitions, 3292 flow, removed 214 selfloop flow, removed 14 redundant places. [2022-07-12 10:24:07,417 INFO L242 Difference]: Finished difference. Result has 355 places, 261 transitions, 2068 flow [2022-07-12 10:24:07,417 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1824, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2068, PETRI_PLACES=355, PETRI_TRANSITIONS=261} [2022-07-12 10:24:07,417 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 198 predicate places. [2022-07-12 10:24:07,418 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 261 transitions, 2068 flow [2022-07-12 10:24:07,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:07,418 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:07,418 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:07,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-12 10:24:07,418 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:07,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:07,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1020921776, now seen corresponding path program 8 times [2022-07-12 10:24:07,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:07,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969938894] [2022-07-12 10:24:07,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:07,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:07,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:07,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:07,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969938894] [2022-07-12 10:24:07,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969938894] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:07,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:07,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:07,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320763681] [2022-07-12 10:24:07,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:07,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:07,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:07,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:07,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:07,501 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:07,502 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 261 transitions, 2068 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:07,502 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:07,502 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:07,502 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:08,032 INFO L129 PetriNetUnfolder]: 408/2015 cut-off events. [2022-07-12 10:24:08,033 INFO L130 PetriNetUnfolder]: For 17400/17481 co-relation queries the response was YES. [2022-07-12 10:24:08,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8873 conditions, 2015 events. 408/2015 cut-off events. For 17400/17481 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 15661 event pairs, 275 based on Foata normal form. 10/1933 useless extension candidates. Maximal degree in co-relation 8751. Up to 803 conditions per place. [2022-07-12 10:24:08,057 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 122 selfloop transitions, 28 changer transitions 43/337 dead transitions. [2022-07-12 10:24:08,057 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 337 transitions, 3618 flow [2022-07-12 10:24:08,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-12 10:24:08,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-12 10:24:08,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3580 transitions. [2022-07-12 10:24:08,060 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7620263942103023 [2022-07-12 10:24:08,060 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3580 transitions. [2022-07-12 10:24:08,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3580 transitions. [2022-07-12 10:24:08,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:08,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3580 transitions. [2022-07-12 10:24:08,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.59259259259258) internal successors, (3580), 27 states have internal predecessors, (3580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:08,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:08,065 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:08,065 INFO L186 Difference]: Start difference. First operand has 355 places, 261 transitions, 2068 flow. Second operand 27 states and 3580 transitions. [2022-07-12 10:24:08,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 337 transitions, 3618 flow [2022-07-12 10:24:08,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 337 transitions, 3469 flow, removed 64 selfloop flow, removed 11 redundant places. [2022-07-12 10:24:08,125 INFO L242 Difference]: Finished difference. Result has 377 places, 265 transitions, 2217 flow [2022-07-12 10:24:08,126 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1999, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2217, PETRI_PLACES=377, PETRI_TRANSITIONS=265} [2022-07-12 10:24:08,126 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 220 predicate places. [2022-07-12 10:24:08,126 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 265 transitions, 2217 flow [2022-07-12 10:24:08,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:08,126 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:08,127 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:08,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-12 10:24:08,127 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:08,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:08,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1494954714, now seen corresponding path program 9 times [2022-07-12 10:24:08,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:08,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692251274] [2022-07-12 10:24:08,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:08,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:08,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:08,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:08,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692251274] [2022-07-12 10:24:08,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692251274] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:08,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:08,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:08,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876732196] [2022-07-12 10:24:08,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:08,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:08,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:08,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:08,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:08,211 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:08,211 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 265 transitions, 2217 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:08,211 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:08,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:08,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:08,701 INFO L129 PetriNetUnfolder]: 398/1963 cut-off events. [2022-07-12 10:24:08,701 INFO L130 PetriNetUnfolder]: For 17968/18066 co-relation queries the response was YES. [2022-07-12 10:24:08,715 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8828 conditions, 1963 events. 398/1963 cut-off events. For 17968/18066 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 15185 event pairs, 257 based on Foata normal form. 20/1887 useless extension candidates. Maximal degree in co-relation 8694. Up to 822 conditions per place. [2022-07-12 10:24:08,720 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 118 selfloop transitions, 36 changer transitions 32/330 dead transitions. [2022-07-12 10:24:08,720 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 330 transitions, 3617 flow [2022-07-12 10:24:08,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:24:08,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:24:08,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2529 transitions. [2022-07-12 10:24:08,722 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.76497277676951 [2022-07-12 10:24:08,722 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2529 transitions. [2022-07-12 10:24:08,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2529 transitions. [2022-07-12 10:24:08,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:08,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2529 transitions. [2022-07-12 10:24:08,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.10526315789474) internal successors, (2529), 19 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:08,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:08,725 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:08,726 INFO L186 Difference]: Start difference. First operand has 377 places, 265 transitions, 2217 flow. Second operand 19 states and 2529 transitions. [2022-07-12 10:24:08,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 330 transitions, 3617 flow [2022-07-12 10:24:08,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 330 transitions, 3423 flow, removed 75 selfloop flow, removed 21 redundant places. [2022-07-12 10:24:08,790 INFO L242 Difference]: Finished difference. Result has 364 places, 268 transitions, 2266 flow [2022-07-12 10:24:08,790 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2111, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2266, PETRI_PLACES=364, PETRI_TRANSITIONS=268} [2022-07-12 10:24:08,791 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 207 predicate places. [2022-07-12 10:24:08,791 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 268 transitions, 2266 flow [2022-07-12 10:24:08,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:08,791 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:08,791 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:08,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-12 10:24:08,791 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:08,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:08,792 INFO L85 PathProgramCache]: Analyzing trace with hash 2070079914, now seen corresponding path program 10 times [2022-07-12 10:24:08,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:08,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002350732] [2022-07-12 10:24:08,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:08,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:08,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:08,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:08,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002350732] [2022-07-12 10:24:08,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002350732] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:08,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:08,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:08,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028490801] [2022-07-12 10:24:08,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:08,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:08,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:08,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:08,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:08,872 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:08,872 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 268 transitions, 2266 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:08,873 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:08,873 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:08,873 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:09,324 INFO L129 PetriNetUnfolder]: 384/1916 cut-off events. [2022-07-12 10:24:09,325 INFO L130 PetriNetUnfolder]: For 15782/15870 co-relation queries the response was YES. [2022-07-12 10:24:09,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8339 conditions, 1916 events. 384/1916 cut-off events. For 15782/15870 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 14677 event pairs, 250 based on Foata normal form. 12/1836 useless extension candidates. Maximal degree in co-relation 8215. Up to 805 conditions per place. [2022-07-12 10:24:09,347 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 113 selfloop transitions, 20 changer transitions 36/313 dead transitions. [2022-07-12 10:24:09,347 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 313 transitions, 3214 flow [2022-07-12 10:24:09,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:24:09,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:24:09,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2651 transitions. [2022-07-12 10:24:09,349 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7617816091954023 [2022-07-12 10:24:09,349 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2651 transitions. [2022-07-12 10:24:09,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2651 transitions. [2022-07-12 10:24:09,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:09,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2651 transitions. [2022-07-12 10:24:09,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.55) internal successors, (2651), 20 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:09,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:09,353 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:09,353 INFO L186 Difference]: Start difference. First operand has 364 places, 268 transitions, 2266 flow. Second operand 20 states and 2651 transitions. [2022-07-12 10:24:09,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 313 transitions, 3214 flow [2022-07-12 10:24:09,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 313 transitions, 3019 flow, removed 47 selfloop flow, removed 15 redundant places. [2022-07-12 10:24:09,410 INFO L242 Difference]: Finished difference. Result has 367 places, 247 transitions, 1854 flow [2022-07-12 10:24:09,411 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2111, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1854, PETRI_PLACES=367, PETRI_TRANSITIONS=247} [2022-07-12 10:24:09,411 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 210 predicate places. [2022-07-12 10:24:09,411 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 247 transitions, 1854 flow [2022-07-12 10:24:09,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:09,411 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:09,412 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:09,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-12 10:24:09,412 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:09,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:09,412 INFO L85 PathProgramCache]: Analyzing trace with hash 832462464, now seen corresponding path program 11 times [2022-07-12 10:24:09,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:09,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921486251] [2022-07-12 10:24:09,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:09,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:09,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:09,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:09,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921486251] [2022-07-12 10:24:09,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921486251] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:09,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:09,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:09,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801612229] [2022-07-12 10:24:09,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:09,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:09,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:09,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:09,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:09,492 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:09,493 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 247 transitions, 1854 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:09,493 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:09,493 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:09,493 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:09,977 INFO L129 PetriNetUnfolder]: 388/1877 cut-off events. [2022-07-12 10:24:09,977 INFO L130 PetriNetUnfolder]: For 15179/15262 co-relation queries the response was YES. [2022-07-12 10:24:09,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8323 conditions, 1877 events. 388/1877 cut-off events. For 15179/15262 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 14228 event pairs, 262 based on Foata normal form. 12/1791 useless extension candidates. Maximal degree in co-relation 8201. Up to 805 conditions per place. [2022-07-12 10:24:09,997 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 101 selfloop transitions, 31 changer transitions 27/303 dead transitions. [2022-07-12 10:24:09,997 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 303 transitions, 3080 flow [2022-07-12 10:24:09,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:24:09,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:24:09,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2919 transitions. [2022-07-12 10:24:09,999 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.762539184952978 [2022-07-12 10:24:09,999 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2919 transitions. [2022-07-12 10:24:09,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2919 transitions. [2022-07-12 10:24:10,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:10,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2919 transitions. [2022-07-12 10:24:10,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.6818181818182) internal successors, (2919), 22 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:10,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:10,004 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:10,004 INFO L186 Difference]: Start difference. First operand has 367 places, 247 transitions, 1854 flow. Second operand 22 states and 2919 transitions. [2022-07-12 10:24:10,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 303 transitions, 3080 flow [2022-07-12 10:24:10,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 303 transitions, 2884 flow, removed 32 selfloop flow, removed 20 redundant places. [2022-07-12 10:24:10,061 INFO L242 Difference]: Finished difference. Result has 349 places, 259 transitions, 2093 flow [2022-07-12 10:24:10,062 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2093, PETRI_PLACES=349, PETRI_TRANSITIONS=259} [2022-07-12 10:24:10,062 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 192 predicate places. [2022-07-12 10:24:10,062 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 259 transitions, 2093 flow [2022-07-12 10:24:10,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:10,063 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:10,063 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:10,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-12 10:24:10,063 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:10,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:10,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1639997654, now seen corresponding path program 12 times [2022-07-12 10:24:10,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:10,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954757768] [2022-07-12 10:24:10,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:10,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:10,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:10,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:10,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954757768] [2022-07-12 10:24:10,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954757768] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:10,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:10,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:10,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324863830] [2022-07-12 10:24:10,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:10,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:10,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:10,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:10,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:10,202 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:10,202 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 259 transitions, 2093 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:10,203 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:10,203 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:10,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:10,661 INFO L129 PetriNetUnfolder]: 394/1938 cut-off events. [2022-07-12 10:24:10,661 INFO L130 PetriNetUnfolder]: For 14957/15036 co-relation queries the response was YES. [2022-07-12 10:24:10,677 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8434 conditions, 1938 events. 394/1938 cut-off events. For 14957/15036 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 14839 event pairs, 280 based on Foata normal form. 10/1852 useless extension candidates. Maximal degree in co-relation 8317. Up to 805 conditions per place. [2022-07-12 10:24:10,682 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 107 selfloop transitions, 38 changer transitions 27/316 dead transitions. [2022-07-12 10:24:10,682 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 316 transitions, 3351 flow [2022-07-12 10:24:10,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:24:10,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:24:10,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2662 transitions. [2022-07-12 10:24:10,684 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7649425287356322 [2022-07-12 10:24:10,684 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2662 transitions. [2022-07-12 10:24:10,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2662 transitions. [2022-07-12 10:24:10,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:10,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2662 transitions. [2022-07-12 10:24:10,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.1) internal successors, (2662), 20 states have internal predecessors, (2662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:10,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:10,688 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:10,688 INFO L186 Difference]: Start difference. First operand has 349 places, 259 transitions, 2093 flow. Second operand 20 states and 2662 transitions. [2022-07-12 10:24:10,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 316 transitions, 3351 flow [2022-07-12 10:24:10,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 316 transitions, 3151 flow, removed 92 selfloop flow, removed 5 redundant places. [2022-07-12 10:24:10,745 INFO L242 Difference]: Finished difference. Result has 365 places, 271 transitions, 2319 flow [2022-07-12 10:24:10,746 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1983, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2319, PETRI_PLACES=365, PETRI_TRANSITIONS=271} [2022-07-12 10:24:10,746 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 208 predicate places. [2022-07-12 10:24:10,746 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 271 transitions, 2319 flow [2022-07-12 10:24:10,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:10,747 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:10,747 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:10,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-07-12 10:24:10,747 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:10,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:10,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1097966978, now seen corresponding path program 13 times [2022-07-12 10:24:10,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:10,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473226569] [2022-07-12 10:24:10,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:10,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:10,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:10,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:10,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473226569] [2022-07-12 10:24:10,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473226569] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:10,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:10,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:10,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542631018] [2022-07-12 10:24:10,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:10,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:10,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:10,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:10,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:10,827 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:10,828 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 271 transitions, 2319 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:10,828 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:10,828 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:10,828 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:11,310 INFO L129 PetriNetUnfolder]: 390/1902 cut-off events. [2022-07-12 10:24:11,311 INFO L130 PetriNetUnfolder]: For 14768/14851 co-relation queries the response was YES. [2022-07-12 10:24:11,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8402 conditions, 1902 events. 390/1902 cut-off events. For 14768/14851 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 14481 event pairs, 261 based on Foata normal form. 12/1816 useless extension candidates. Maximal degree in co-relation 8276. Up to 805 conditions per place. [2022-07-12 10:24:11,329 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 111 selfloop transitions, 37 changer transitions 29/321 dead transitions. [2022-07-12 10:24:11,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 321 transitions, 3495 flow [2022-07-12 10:24:11,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 10:24:11,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-12 10:24:11,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2792 transitions. [2022-07-12 10:24:11,331 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7640941434044882 [2022-07-12 10:24:11,331 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2792 transitions. [2022-07-12 10:24:11,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2792 transitions. [2022-07-12 10:24:11,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:11,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2792 transitions. [2022-07-12 10:24:11,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.95238095238096) internal successors, (2792), 21 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:11,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:11,335 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:11,335 INFO L186 Difference]: Start difference. First operand has 365 places, 271 transitions, 2319 flow. Second operand 21 states and 2792 transitions. [2022-07-12 10:24:11,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 321 transitions, 3495 flow [2022-07-12 10:24:11,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 321 transitions, 3371 flow, removed 38 selfloop flow, removed 8 redundant places. [2022-07-12 10:24:11,395 INFO L242 Difference]: Finished difference. Result has 380 places, 277 transitions, 2487 flow [2022-07-12 10:24:11,395 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2232, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2487, PETRI_PLACES=380, PETRI_TRANSITIONS=277} [2022-07-12 10:24:11,395 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 223 predicate places. [2022-07-12 10:24:11,396 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 277 transitions, 2487 flow [2022-07-12 10:24:11,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:11,396 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:11,396 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:11,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-07-12 10:24:11,396 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:11,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:11,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1918666362, now seen corresponding path program 14 times [2022-07-12 10:24:11,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:11,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012179297] [2022-07-12 10:24:11,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:11,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:11,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:11,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:11,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012179297] [2022-07-12 10:24:11,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012179297] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:11,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:11,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:11,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106133135] [2022-07-12 10:24:11,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:11,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:11,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:11,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:11,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:11,482 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:11,483 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 277 transitions, 2487 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:11,483 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:11,483 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:11,483 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:12,013 INFO L129 PetriNetUnfolder]: 398/1951 cut-off events. [2022-07-12 10:24:12,014 INFO L130 PetriNetUnfolder]: For 15501/15582 co-relation queries the response was YES. [2022-07-12 10:24:12,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8645 conditions, 1951 events. 398/1951 cut-off events. For 15501/15582 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 15002 event pairs, 259 based on Foata normal form. 12/1866 useless extension candidates. Maximal degree in co-relation 8513. Up to 808 conditions per place. [2022-07-12 10:24:12,036 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 115 selfloop transitions, 41 changer transitions 38/338 dead transitions. [2022-07-12 10:24:12,037 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 338 transitions, 3784 flow [2022-07-12 10:24:12,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:24:12,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:24:12,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3187 transitions. [2022-07-12 10:24:12,038 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7631704980842912 [2022-07-12 10:24:12,039 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3187 transitions. [2022-07-12 10:24:12,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3187 transitions. [2022-07-12 10:24:12,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:12,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3187 transitions. [2022-07-12 10:24:12,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.79166666666666) internal successors, (3187), 24 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:12,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:12,043 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:12,043 INFO L186 Difference]: Start difference. First operand has 380 places, 277 transitions, 2487 flow. Second operand 24 states and 3187 transitions. [2022-07-12 10:24:12,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 338 transitions, 3784 flow [2022-07-12 10:24:12,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 338 transitions, 3654 flow, removed 38 selfloop flow, removed 8 redundant places. [2022-07-12 10:24:12,112 INFO L242 Difference]: Finished difference. Result has 400 places, 282 transitions, 2628 flow [2022-07-12 10:24:12,112 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2391, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2628, PETRI_PLACES=400, PETRI_TRANSITIONS=282} [2022-07-12 10:24:12,112 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 243 predicate places. [2022-07-12 10:24:12,112 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 282 transitions, 2628 flow [2022-07-12 10:24:12,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:12,113 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:12,113 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:12,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-07-12 10:24:12,113 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:12,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:12,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1461453300, now seen corresponding path program 15 times [2022-07-12 10:24:12,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:12,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325242432] [2022-07-12 10:24:12,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:12,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:12,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:12,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:12,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325242432] [2022-07-12 10:24:12,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325242432] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:12,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:12,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:12,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668068421] [2022-07-12 10:24:12,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:12,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:12,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:12,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:12,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:12,220 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:12,220 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 282 transitions, 2628 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:12,220 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:12,220 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:12,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:12,762 INFO L129 PetriNetUnfolder]: 394/1971 cut-off events. [2022-07-12 10:24:12,762 INFO L130 PetriNetUnfolder]: For 16835/16911 co-relation queries the response was YES. [2022-07-12 10:24:12,783 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8738 conditions, 1971 events. 394/1971 cut-off events. For 16835/16911 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 15253 event pairs, 274 based on Foata normal form. 10/1884 useless extension candidates. Maximal degree in co-relation 8598. Up to 804 conditions per place. [2022-07-12 10:24:12,788 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 119 selfloop transitions, 36 changer transitions 43/342 dead transitions. [2022-07-12 10:24:12,788 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 342 transitions, 3967 flow [2022-07-12 10:24:12,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-12 10:24:12,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-12 10:24:12,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3056 transitions. [2022-07-12 10:24:12,790 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7636181909045477 [2022-07-12 10:24:12,790 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3056 transitions. [2022-07-12 10:24:12,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3056 transitions. [2022-07-12 10:24:12,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:12,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3056 transitions. [2022-07-12 10:24:12,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.8695652173913) internal successors, (3056), 23 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:12,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:12,794 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:12,794 INFO L186 Difference]: Start difference. First operand has 400 places, 282 transitions, 2628 flow. Second operand 23 states and 3056 transitions. [2022-07-12 10:24:12,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 342 transitions, 3967 flow [2022-07-12 10:24:12,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 342 transitions, 3774 flow, removed 52 selfloop flow, removed 16 redundant places. [2022-07-12 10:24:12,869 INFO L242 Difference]: Finished difference. Result has 404 places, 281 transitions, 2606 flow [2022-07-12 10:24:12,870 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2501, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2606, PETRI_PLACES=404, PETRI_TRANSITIONS=281} [2022-07-12 10:24:12,870 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 247 predicate places. [2022-07-12 10:24:12,870 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 281 transitions, 2606 flow [2022-07-12 10:24:12,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:12,871 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:12,871 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:12,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-07-12 10:24:12,871 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:12,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:12,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1776543720, now seen corresponding path program 16 times [2022-07-12 10:24:12,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:12,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312242003] [2022-07-12 10:24:12,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:12,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:12,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:12,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:12,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312242003] [2022-07-12 10:24:12,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312242003] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:12,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:12,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:12,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017519833] [2022-07-12 10:24:12,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:12,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:12,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:12,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:12,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:12,961 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:12,962 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 281 transitions, 2606 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:12,962 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:12,962 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:12,962 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:13,522 INFO L129 PetriNetUnfolder]: 379/1918 cut-off events. [2022-07-12 10:24:13,522 INFO L130 PetriNetUnfolder]: For 15723/15799 co-relation queries the response was YES. [2022-07-12 10:24:13,536 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8343 conditions, 1918 events. 379/1918 cut-off events. For 15723/15799 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 14719 event pairs, 275 based on Foata normal form. 10/1833 useless extension candidates. Maximal degree in co-relation 8202. Up to 801 conditions per place. [2022-07-12 10:24:13,540 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 107 selfloop transitions, 25 changer transitions 36/312 dead transitions. [2022-07-12 10:24:13,541 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 312 transitions, 3348 flow [2022-07-12 10:24:13,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:24:13,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:24:13,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2658 transitions. [2022-07-12 10:24:13,542 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7637931034482759 [2022-07-12 10:24:13,542 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2658 transitions. [2022-07-12 10:24:13,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2658 transitions. [2022-07-12 10:24:13,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:13,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2658 transitions. [2022-07-12 10:24:13,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.9) internal successors, (2658), 20 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:13,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:13,546 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:13,546 INFO L186 Difference]: Start difference. First operand has 404 places, 281 transitions, 2606 flow. Second operand 20 states and 2658 transitions. [2022-07-12 10:24:13,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 312 transitions, 3348 flow [2022-07-12 10:24:13,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 312 transitions, 3150 flow, removed 37 selfloop flow, removed 22 redundant places. [2022-07-12 10:24:13,608 INFO L242 Difference]: Finished difference. Result has 394 places, 263 transitions, 2191 flow [2022-07-12 10:24:13,609 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2439, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2191, PETRI_PLACES=394, PETRI_TRANSITIONS=263} [2022-07-12 10:24:13,609 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 237 predicate places. [2022-07-12 10:24:13,609 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 263 transitions, 2191 flow [2022-07-12 10:24:13,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:13,609 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:13,610 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:13,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-07-12 10:24:13,610 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:13,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:13,610 INFO L85 PathProgramCache]: Analyzing trace with hash 64360534, now seen corresponding path program 17 times [2022-07-12 10:24:13,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:13,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874877803] [2022-07-12 10:24:13,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:13,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:13,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:13,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:13,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874877803] [2022-07-12 10:24:13,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874877803] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:13,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:13,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:13,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613743488] [2022-07-12 10:24:13,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:13,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:13,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:13,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:13,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:13,693 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:13,694 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 263 transitions, 2191 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:13,694 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:13,694 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:13,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:14,162 INFO L129 PetriNetUnfolder]: 374/1862 cut-off events. [2022-07-12 10:24:14,163 INFO L130 PetriNetUnfolder]: For 14373/14454 co-relation queries the response was YES. [2022-07-12 10:24:14,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8009 conditions, 1862 events. 374/1862 cut-off events. For 14373/14454 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 14164 event pairs, 257 based on Foata normal form. 12/1778 useless extension candidates. Maximal degree in co-relation 7877. Up to 801 conditions per place. [2022-07-12 10:24:14,185 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 21 changer transitions 34/299 dead transitions. [2022-07-12 10:24:14,185 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 299 transitions, 2997 flow [2022-07-12 10:24:14,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:24:14,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:24:14,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2656 transitions. [2022-07-12 10:24:14,186 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7632183908045977 [2022-07-12 10:24:14,186 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2656 transitions. [2022-07-12 10:24:14,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2656 transitions. [2022-07-12 10:24:14,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:14,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2656 transitions. [2022-07-12 10:24:14,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.8) internal successors, (2656), 20 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:14,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:14,190 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:14,190 INFO L186 Difference]: Start difference. First operand has 394 places, 263 transitions, 2191 flow. Second operand 20 states and 2656 transitions. [2022-07-12 10:24:14,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 299 transitions, 2997 flow [2022-07-12 10:24:14,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 299 transitions, 2775 flow, removed 24 selfloop flow, removed 23 redundant places. [2022-07-12 10:24:14,247 INFO L242 Difference]: Finished difference. Result has 373 places, 252 transitions, 1906 flow [2022-07-12 10:24:14,247 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2019, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1906, PETRI_PLACES=373, PETRI_TRANSITIONS=252} [2022-07-12 10:24:14,248 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 216 predicate places. [2022-07-12 10:24:14,248 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 252 transitions, 1906 flow [2022-07-12 10:24:14,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:14,248 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:14,248 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:14,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-07-12 10:24:14,248 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:14,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:14,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1103255976, now seen corresponding path program 18 times [2022-07-12 10:24:14,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:14,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710609204] [2022-07-12 10:24:14,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:14,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:14,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:14,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:14,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710609204] [2022-07-12 10:24:14,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710609204] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:14,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:14,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:14,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527191705] [2022-07-12 10:24:14,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:14,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:14,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:14,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:14,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:14,327 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:14,328 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 252 transitions, 1906 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:14,328 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:14,328 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:14,328 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:14,735 INFO L129 PetriNetUnfolder]: 360/1805 cut-off events. [2022-07-12 10:24:14,735 INFO L130 PetriNetUnfolder]: For 13070/13151 co-relation queries the response was YES. [2022-07-12 10:24:14,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7539 conditions, 1805 events. 360/1805 cut-off events. For 13070/13151 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13546 event pairs, 254 based on Foata normal form. 12/1724 useless extension candidates. Maximal degree in co-relation 7413. Up to 783 conditions per place. [2022-07-12 10:24:14,756 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 90 selfloop transitions, 6 changer transitions 38/278 dead transitions. [2022-07-12 10:24:14,756 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 278 transitions, 2483 flow [2022-07-12 10:24:14,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:24:14,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:24:14,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2516 transitions. [2022-07-12 10:24:14,757 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7610405323653963 [2022-07-12 10:24:14,757 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2516 transitions. [2022-07-12 10:24:14,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2516 transitions. [2022-07-12 10:24:14,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:14,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2516 transitions. [2022-07-12 10:24:14,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 132.42105263157896) internal successors, (2516), 19 states have internal predecessors, (2516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:14,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:14,761 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:14,761 INFO L186 Difference]: Start difference. First operand has 373 places, 252 transitions, 1906 flow. Second operand 19 states and 2516 transitions. [2022-07-12 10:24:14,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 278 transitions, 2483 flow [2022-07-12 10:24:14,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 278 transitions, 2353 flow, removed 24 selfloop flow, removed 23 redundant places. [2022-07-12 10:24:14,812 INFO L242 Difference]: Finished difference. Result has 354 places, 227 transitions, 1467 flow [2022-07-12 10:24:14,812 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1797, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1467, PETRI_PLACES=354, PETRI_TRANSITIONS=227} [2022-07-12 10:24:14,813 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 197 predicate places. [2022-07-12 10:24:14,813 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 227 transitions, 1467 flow [2022-07-12 10:24:14,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:14,813 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:14,813 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:14,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-07-12 10:24:14,814 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:14,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:14,816 INFO L85 PathProgramCache]: Analyzing trace with hash 692010612, now seen corresponding path program 19 times [2022-07-12 10:24:14,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:14,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061991602] [2022-07-12 10:24:14,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:14,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:14,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:14,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:14,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061991602] [2022-07-12 10:24:14,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061991602] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:14,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:14,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:14,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229822226] [2022-07-12 10:24:14,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:14,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:14,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:14,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:14,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:14,892 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:14,893 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 227 transitions, 1467 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:14,893 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:14,893 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:14,893 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:15,381 INFO L129 PetriNetUnfolder]: 375/1839 cut-off events. [2022-07-12 10:24:15,381 INFO L130 PetriNetUnfolder]: For 13344/13416 co-relation queries the response was YES. [2022-07-12 10:24:15,396 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7719 conditions, 1839 events. 375/1839 cut-off events. For 13344/13416 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13826 event pairs, 235 based on Foata normal form. 10/1763 useless extension candidates. Maximal degree in co-relation 7603. Up to 732 conditions per place. [2022-07-12 10:24:15,401 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 108 selfloop transitions, 30 changer transitions 38/320 dead transitions. [2022-07-12 10:24:15,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 320 transitions, 3059 flow [2022-07-12 10:24:15,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 10:24:15,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-12 10:24:15,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3703 transitions. [2022-07-12 10:24:15,403 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7600574712643678 [2022-07-12 10:24:15,403 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3703 transitions. [2022-07-12 10:24:15,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3703 transitions. [2022-07-12 10:24:15,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:15,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3703 transitions. [2022-07-12 10:24:15,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.25) internal successors, (3703), 28 states have internal predecessors, (3703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:15,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:15,408 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:15,408 INFO L186 Difference]: Start difference. First operand has 354 places, 227 transitions, 1467 flow. Second operand 28 states and 3703 transitions. [2022-07-12 10:24:15,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 320 transitions, 3059 flow [2022-07-12 10:24:15,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 320 transitions, 2879 flow, removed 39 selfloop flow, removed 19 redundant places. [2022-07-12 10:24:15,452 INFO L242 Difference]: Finished difference. Result has 343 places, 242 transitions, 1737 flow [2022-07-12 10:24:15,452 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1401, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1737, PETRI_PLACES=343, PETRI_TRANSITIONS=242} [2022-07-12 10:24:15,452 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 186 predicate places. [2022-07-12 10:24:15,452 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 242 transitions, 1737 flow [2022-07-12 10:24:15,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:15,453 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:15,453 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:15,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-07-12 10:24:15,453 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:15,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:15,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1243327188, now seen corresponding path program 20 times [2022-07-12 10:24:15,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:15,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778365430] [2022-07-12 10:24:15,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:15,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:15,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:15,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:15,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778365430] [2022-07-12 10:24:15,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778365430] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:15,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:15,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:15,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339713080] [2022-07-12 10:24:15,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:15,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:15,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:15,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:15,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:15,535 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:15,535 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 242 transitions, 1737 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:15,535 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:15,536 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:15,536 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:16,090 INFO L129 PetriNetUnfolder]: 375/1828 cut-off events. [2022-07-12 10:24:16,090 INFO L130 PetriNetUnfolder]: For 12637/12709 co-relation queries the response was YES. [2022-07-12 10:24:16,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7789 conditions, 1828 events. 375/1828 cut-off events. For 12637/12709 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13763 event pairs, 242 based on Foata normal form. 10/1743 useless extension candidates. Maximal degree in co-relation 7669. Up to 738 conditions per place. [2022-07-12 10:24:16,110 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 101 selfloop transitions, 34 changer transitions 35/314 dead transitions. [2022-07-12 10:24:16,110 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 314 transitions, 3162 flow [2022-07-12 10:24:16,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-12 10:24:16,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-12 10:24:16,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3446 transitions. [2022-07-12 10:24:16,113 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7617152961980548 [2022-07-12 10:24:16,113 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3446 transitions. [2022-07-12 10:24:16,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3446 transitions. [2022-07-12 10:24:16,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:16,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3446 transitions. [2022-07-12 10:24:16,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.53846153846155) internal successors, (3446), 26 states have internal predecessors, (3446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:16,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:16,118 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:16,118 INFO L186 Difference]: Start difference. First operand has 343 places, 242 transitions, 1737 flow. Second operand 26 states and 3446 transitions. [2022-07-12 10:24:16,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 314 transitions, 3162 flow [2022-07-12 10:24:16,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 314 transitions, 2981 flow, removed 71 selfloop flow, removed 17 redundant places. [2022-07-12 10:24:16,167 INFO L242 Difference]: Finished difference. Result has 354 places, 256 transitions, 2053 flow [2022-07-12 10:24:16,167 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1654, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2053, PETRI_PLACES=354, PETRI_TRANSITIONS=256} [2022-07-12 10:24:16,169 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 197 predicate places. [2022-07-12 10:24:16,169 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 256 transitions, 2053 flow [2022-07-12 10:24:16,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:16,169 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:16,169 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:16,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-07-12 10:24:16,170 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:16,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:16,170 INFO L85 PathProgramCache]: Analyzing trace with hash 282742496, now seen corresponding path program 21 times [2022-07-12 10:24:16,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:16,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976049641] [2022-07-12 10:24:16,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:16,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:16,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:16,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:16,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976049641] [2022-07-12 10:24:16,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976049641] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:16,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:16,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:16,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850108311] [2022-07-12 10:24:16,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:16,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:16,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:16,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:16,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:16,258 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:16,258 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 256 transitions, 2053 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:16,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:16,259 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:16,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:16,854 INFO L129 PetriNetUnfolder]: 371/1831 cut-off events. [2022-07-12 10:24:16,854 INFO L130 PetriNetUnfolder]: For 13978/14050 co-relation queries the response was YES. [2022-07-12 10:24:16,870 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7956 conditions, 1831 events. 371/1831 cut-off events. For 13978/14050 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13851 event pairs, 240 based on Foata normal form. 10/1748 useless extension candidates. Maximal degree in co-relation 7831. Up to 736 conditions per place. [2022-07-12 10:24:16,875 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 105 selfloop transitions, 36 changer transitions 39/324 dead transitions. [2022-07-12 10:24:16,875 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 324 transitions, 3432 flow [2022-07-12 10:24:16,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-12 10:24:16,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-12 10:24:16,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3575 transitions. [2022-07-12 10:24:16,877 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7609621115368241 [2022-07-12 10:24:16,877 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3575 transitions. [2022-07-12 10:24:16,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3575 transitions. [2022-07-12 10:24:16,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:16,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3575 transitions. [2022-07-12 10:24:16,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.40740740740742) internal successors, (3575), 27 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:16,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:16,882 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:16,882 INFO L186 Difference]: Start difference. First operand has 354 places, 256 transitions, 2053 flow. Second operand 27 states and 3575 transitions. [2022-07-12 10:24:16,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 324 transitions, 3432 flow [2022-07-12 10:24:16,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 324 transitions, 3192 flow, removed 100 selfloop flow, removed 14 redundant places. [2022-07-12 10:24:16,939 INFO L242 Difference]: Finished difference. Result has 369 places, 259 transitions, 2131 flow [2022-07-12 10:24:16,939 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1908, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2131, PETRI_PLACES=369, PETRI_TRANSITIONS=259} [2022-07-12 10:24:16,939 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 212 predicate places. [2022-07-12 10:24:16,939 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 259 transitions, 2131 flow [2022-07-12 10:24:16,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:16,940 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:16,940 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:16,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-07-12 10:24:16,940 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:16,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:16,941 INFO L85 PathProgramCache]: Analyzing trace with hash -612796028, now seen corresponding path program 22 times [2022-07-12 10:24:16,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:16,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8608004] [2022-07-12 10:24:16,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:16,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:17,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:17,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:17,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8608004] [2022-07-12 10:24:17,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8608004] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:17,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:17,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:17,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699718048] [2022-07-12 10:24:17,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:17,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:17,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:17,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:17,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:17,017 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:17,017 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 259 transitions, 2131 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:17,017 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:17,017 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:17,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:17,458 INFO L129 PetriNetUnfolder]: 364/1793 cut-off events. [2022-07-12 10:24:17,458 INFO L130 PetriNetUnfolder]: For 13755/13827 co-relation queries the response was YES. [2022-07-12 10:24:17,474 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7810 conditions, 1793 events. 364/1793 cut-off events. For 13755/13827 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13452 event pairs, 231 based on Foata normal form. 10/1714 useless extension candidates. Maximal degree in co-relation 7678. Up to 738 conditions per place. [2022-07-12 10:24:17,478 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 110 selfloop transitions, 39 changer transitions 31/324 dead transitions. [2022-07-12 10:24:17,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 324 transitions, 3396 flow [2022-07-12 10:24:17,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:24:17,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:24:17,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2920 transitions. [2022-07-12 10:24:17,480 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7628004179728317 [2022-07-12 10:24:17,480 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2920 transitions. [2022-07-12 10:24:17,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2920 transitions. [2022-07-12 10:24:17,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:17,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2920 transitions. [2022-07-12 10:24:17,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.72727272727272) internal successors, (2920), 22 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:17,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:17,484 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:17,484 INFO L186 Difference]: Start difference. First operand has 369 places, 259 transitions, 2131 flow. Second operand 22 states and 2920 transitions. [2022-07-12 10:24:17,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 324 transitions, 3396 flow [2022-07-12 10:24:17,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 324 transitions, 3144 flow, removed 88 selfloop flow, removed 21 redundant places. [2022-07-12 10:24:17,545 INFO L242 Difference]: Finished difference. Result has 363 places, 266 transitions, 2213 flow [2022-07-12 10:24:17,545 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1973, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2213, PETRI_PLACES=363, PETRI_TRANSITIONS=266} [2022-07-12 10:24:17,546 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 206 predicate places. [2022-07-12 10:24:17,546 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 266 transitions, 2213 flow [2022-07-12 10:24:17,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:17,546 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:17,546 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:17,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-07-12 10:24:17,547 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:17,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:17,547 INFO L85 PathProgramCache]: Analyzing trace with hash 44964614, now seen corresponding path program 23 times [2022-07-12 10:24:17,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:17,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948678015] [2022-07-12 10:24:17,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:17,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:17,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:17,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:17,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948678015] [2022-07-12 10:24:17,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948678015] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:17,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:17,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:17,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305970953] [2022-07-12 10:24:17,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:17,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:17,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:17,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:17,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:17,624 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:17,625 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 266 transitions, 2213 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:17,625 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:17,625 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:17,625 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:18,070 INFO L129 PetriNetUnfolder]: 368/1806 cut-off events. [2022-07-12 10:24:18,071 INFO L130 PetriNetUnfolder]: For 12283/12355 co-relation queries the response was YES. [2022-07-12 10:24:18,087 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7784 conditions, 1806 events. 368/1806 cut-off events. For 12283/12355 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13534 event pairs, 238 based on Foata normal form. 10/1723 useless extension candidates. Maximal degree in co-relation 7660. Up to 740 conditions per place. [2022-07-12 10:24:18,091 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 104 selfloop transitions, 46 changer transitions 30/324 dead transitions. [2022-07-12 10:24:18,091 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 324 transitions, 3386 flow [2022-07-12 10:24:18,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 10:24:18,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-12 10:24:18,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2792 transitions. [2022-07-12 10:24:18,093 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7640941434044882 [2022-07-12 10:24:18,093 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2792 transitions. [2022-07-12 10:24:18,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2792 transitions. [2022-07-12 10:24:18,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:18,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2792 transitions. [2022-07-12 10:24:18,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.95238095238096) internal successors, (2792), 21 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:18,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:18,097 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:18,097 INFO L186 Difference]: Start difference. First operand has 363 places, 266 transitions, 2213 flow. Second operand 21 states and 2792 transitions. [2022-07-12 10:24:18,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 324 transitions, 3386 flow [2022-07-12 10:24:18,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 324 transitions, 3287 flow, removed 34 selfloop flow, removed 7 redundant places. [2022-07-12 10:24:18,176 INFO L242 Difference]: Finished difference. Result has 377 places, 276 transitions, 2461 flow [2022-07-12 10:24:18,176 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2145, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2461, PETRI_PLACES=377, PETRI_TRANSITIONS=276} [2022-07-12 10:24:18,176 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 220 predicate places. [2022-07-12 10:24:18,177 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 276 transitions, 2461 flow [2022-07-12 10:24:18,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:18,177 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:18,177 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:18,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-07-12 10:24:18,177 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:18,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:18,178 INFO L85 PathProgramCache]: Analyzing trace with hash -601232756, now seen corresponding path program 24 times [2022-07-12 10:24:18,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:18,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64925423] [2022-07-12 10:24:18,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:18,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:18,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:18,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:18,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64925423] [2022-07-12 10:24:18,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64925423] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:18,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:18,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:18,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953718290] [2022-07-12 10:24:18,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:18,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:18,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:18,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:18,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:18,258 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:18,258 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 276 transitions, 2461 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:18,258 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:18,259 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:18,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:18,726 INFO L129 PetriNetUnfolder]: 364/1800 cut-off events. [2022-07-12 10:24:18,726 INFO L130 PetriNetUnfolder]: For 12577/12649 co-relation queries the response was YES. [2022-07-12 10:24:18,746 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7849 conditions, 1800 events. 364/1800 cut-off events. For 12577/12649 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13540 event pairs, 236 based on Foata normal form. 10/1717 useless extension candidates. Maximal degree in co-relation 7718. Up to 738 conditions per place. [2022-07-12 10:24:18,752 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 112 selfloop transitions, 41 changer transitions 31/328 dead transitions. [2022-07-12 10:24:18,752 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 328 transitions, 3615 flow [2022-07-12 10:24:18,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:24:18,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:24:18,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2923 transitions. [2022-07-12 10:24:18,754 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7635841170323929 [2022-07-12 10:24:18,755 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2923 transitions. [2022-07-12 10:24:18,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2923 transitions. [2022-07-12 10:24:18,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:18,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2923 transitions. [2022-07-12 10:24:18,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.86363636363637) internal successors, (2923), 22 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:18,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:18,795 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:18,795 INFO L186 Difference]: Start difference. First operand has 377 places, 276 transitions, 2461 flow. Second operand 22 states and 2923 transitions. [2022-07-12 10:24:18,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 328 transitions, 3615 flow [2022-07-12 10:24:18,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 328 transitions, 3478 flow, removed 39 selfloop flow, removed 9 redundant places. [2022-07-12 10:24:18,860 INFO L242 Difference]: Finished difference. Result has 390 places, 280 transitions, 2576 flow [2022-07-12 10:24:18,861 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2364, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2576, PETRI_PLACES=390, PETRI_TRANSITIONS=280} [2022-07-12 10:24:18,862 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 233 predicate places. [2022-07-12 10:24:18,862 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 280 transitions, 2576 flow [2022-07-12 10:24:18,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:18,862 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:18,863 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:18,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-07-12 10:24:18,863 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:18,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:18,863 INFO L85 PathProgramCache]: Analyzing trace with hash 945410318, now seen corresponding path program 25 times [2022-07-12 10:24:18,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:18,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563856381] [2022-07-12 10:24:18,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:18,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:18,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:18,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:18,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563856381] [2022-07-12 10:24:18,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563856381] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:18,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:18,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:18,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227217596] [2022-07-12 10:24:18,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:18,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:18,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:18,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:18,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:18,969 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:18,970 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 280 transitions, 2576 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:18,970 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:18,970 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:18,970 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:19,458 INFO L129 PetriNetUnfolder]: 370/1818 cut-off events. [2022-07-12 10:24:19,458 INFO L130 PetriNetUnfolder]: For 13333/13405 co-relation queries the response was YES. [2022-07-12 10:24:19,475 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8078 conditions, 1818 events. 370/1818 cut-off events. For 13333/13405 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13695 event pairs, 235 based on Foata normal form. 10/1733 useless extension candidates. Maximal degree in co-relation 7942. Up to 740 conditions per place. [2022-07-12 10:24:19,479 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 104 selfloop transitions, 56 changer transitions 28/332 dead transitions. [2022-07-12 10:24:19,480 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 332 transitions, 3785 flow [2022-07-12 10:24:19,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:24:19,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:24:19,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2663 transitions. [2022-07-12 10:24:19,481 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7652298850574712 [2022-07-12 10:24:19,481 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2663 transitions. [2022-07-12 10:24:19,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2663 transitions. [2022-07-12 10:24:19,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:19,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2663 transitions. [2022-07-12 10:24:19,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.15) internal successors, (2663), 20 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) [2022-07-12 10:24:19,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:19,485 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:19,485 INFO L186 Difference]: Start difference. First operand has 390 places, 280 transitions, 2576 flow. Second operand 20 states and 2663 transitions. [2022-07-12 10:24:19,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 332 transitions, 3785 flow [2022-07-12 10:24:19,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 332 transitions, 3642 flow, removed 54 selfloop flow, removed 7 redundant places. [2022-07-12 10:24:19,560 INFO L242 Difference]: Finished difference. Result has 404 places, 292 transitions, 2904 flow [2022-07-12 10:24:19,560 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2480, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2904, PETRI_PLACES=404, PETRI_TRANSITIONS=292} [2022-07-12 10:24:19,561 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 247 predicate places. [2022-07-12 10:24:19,561 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 292 transitions, 2904 flow [2022-07-12 10:24:19,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:19,561 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:19,561 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:19,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-07-12 10:24:19,561 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:19,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:19,562 INFO L85 PathProgramCache]: Analyzing trace with hash -982971076, now seen corresponding path program 26 times [2022-07-12 10:24:19,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:19,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024630453] [2022-07-12 10:24:19,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:19,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:19,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:19,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:19,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024630453] [2022-07-12 10:24:19,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024630453] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:19,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:19,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:19,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422983919] [2022-07-12 10:24:19,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:19,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:19,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:19,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:19,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:19,644 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:19,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 292 transitions, 2904 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:19,645 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:19,645 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:19,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:20,142 INFO L129 PetriNetUnfolder]: 374/1839 cut-off events. [2022-07-12 10:24:20,142 INFO L130 PetriNetUnfolder]: For 14041/14113 co-relation queries the response was YES. [2022-07-12 10:24:20,161 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8365 conditions, 1839 events. 374/1839 cut-off events. For 14041/14113 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13876 event pairs, 234 based on Foata normal form. 10/1753 useless extension candidates. Maximal degree in co-relation 8221. Up to 742 conditions per place. [2022-07-12 10:24:20,165 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 124 selfloop transitions, 46 changer transitions 28/342 dead transitions. [2022-07-12 10:24:20,166 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 342 transitions, 4179 flow [2022-07-12 10:24:20,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:24:20,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:24:20,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2924 transitions. [2022-07-12 10:24:20,167 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7638453500522466 [2022-07-12 10:24:20,168 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2924 transitions. [2022-07-12 10:24:20,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2924 transitions. [2022-07-12 10:24:20,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:20,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2924 transitions. [2022-07-12 10:24:20,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.9090909090909) internal successors, (2924), 22 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:20,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:20,172 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:20,172 INFO L186 Difference]: Start difference. First operand has 404 places, 292 transitions, 2904 flow. Second operand 22 states and 2924 transitions. [2022-07-12 10:24:20,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 342 transitions, 4179 flow [2022-07-12 10:24:20,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 342 transitions, 3961 flow, removed 61 selfloop flow, removed 9 redundant places. [2022-07-12 10:24:20,255 INFO L242 Difference]: Finished difference. Result has 417 places, 304 transitions, 3140 flow [2022-07-12 10:24:20,255 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2732, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3140, PETRI_PLACES=417, PETRI_TRANSITIONS=304} [2022-07-12 10:24:20,256 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 260 predicate places. [2022-07-12 10:24:20,256 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 304 transitions, 3140 flow [2022-07-12 10:24:20,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:20,256 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:20,256 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:20,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-07-12 10:24:20,257 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:20,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:20,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1984360848, now seen corresponding path program 27 times [2022-07-12 10:24:20,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:20,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820552866] [2022-07-12 10:24:20,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:20,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:20,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:20,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:20,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820552866] [2022-07-12 10:24:20,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820552866] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:20,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:20,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:20,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679117542] [2022-07-12 10:24:20,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:20,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:20,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:20,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:20,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:20,341 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:20,342 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 304 transitions, 3140 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:20,342 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:20,342 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:20,342 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:20,849 INFO L129 PetriNetUnfolder]: 370/1829 cut-off events. [2022-07-12 10:24:20,850 INFO L130 PetriNetUnfolder]: For 14026/14098 co-relation queries the response was YES. [2022-07-12 10:24:20,869 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8321 conditions, 1829 events. 370/1829 cut-off events. For 14026/14098 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13811 event pairs, 235 based on Foata normal form. 10/1742 useless extension candidates. Maximal degree in co-relation 8173. Up to 740 conditions per place. [2022-07-12 10:24:20,874 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 127 selfloop transitions, 48 changer transitions 30/349 dead transitions. [2022-07-12 10:24:20,874 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 349 transitions, 4364 flow [2022-07-12 10:24:20,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 10:24:20,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-12 10:24:20,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2797 transitions. [2022-07-12 10:24:20,876 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7654625068418172 [2022-07-12 10:24:20,876 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2797 transitions. [2022-07-12 10:24:20,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2797 transitions. [2022-07-12 10:24:20,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:20,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2797 transitions. [2022-07-12 10:24:20,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 133.1904761904762) internal successors, (2797), 21 states have internal predecessors, (2797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:20,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:20,880 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:20,880 INFO L186 Difference]: Start difference. First operand has 417 places, 304 transitions, 3140 flow. Second operand 21 states and 2797 transitions. [2022-07-12 10:24:20,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 349 transitions, 4364 flow [2022-07-12 10:24:20,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 349 transitions, 4133 flow, removed 96 selfloop flow, removed 6 redundant places. [2022-07-12 10:24:20,981 INFO L242 Difference]: Finished difference. Result has 432 places, 311 transitions, 3285 flow [2022-07-12 10:24:20,981 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2986, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3285, PETRI_PLACES=432, PETRI_TRANSITIONS=311} [2022-07-12 10:24:20,981 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 275 predicate places. [2022-07-12 10:24:20,981 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 311 transitions, 3285 flow [2022-07-12 10:24:20,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:20,982 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:20,982 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:20,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-07-12 10:24:20,982 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:20,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:20,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1967535438, now seen corresponding path program 28 times [2022-07-12 10:24:20,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:20,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220775668] [2022-07-12 10:24:20,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:20,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:21,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:21,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:21,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220775668] [2022-07-12 10:24:21,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220775668] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:21,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:21,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:21,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075134015] [2022-07-12 10:24:21,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:21,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:21,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:21,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:21,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:21,124 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:21,125 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 311 transitions, 3285 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:21,125 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:21,125 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:21,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:21,605 INFO L129 PetriNetUnfolder]: 361/1805 cut-off events. [2022-07-12 10:24:21,605 INFO L130 PetriNetUnfolder]: For 13575/13647 co-relation queries the response was YES. [2022-07-12 10:24:21,626 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8109 conditions, 1805 events. 361/1805 cut-off events. For 13575/13647 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13642 event pairs, 228 based on Foata normal form. 10/1725 useless extension candidates. Maximal degree in co-relation 7953. Up to 737 conditions per place. [2022-07-12 10:24:21,631 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 130 selfloop transitions, 36 changer transitions 40/350 dead transitions. [2022-07-12 10:24:21,631 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 350 transitions, 4154 flow [2022-07-12 10:24:21,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:24:21,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:24:21,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2400 transitions. [2022-07-12 10:24:21,632 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7662835249042146 [2022-07-12 10:24:21,632 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2400 transitions. [2022-07-12 10:24:21,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2400 transitions. [2022-07-12 10:24:21,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:21,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2400 transitions. [2022-07-12 10:24:21,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 133.33333333333334) internal successors, (2400), 18 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:21,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:21,636 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:21,636 INFO L186 Difference]: Start difference. First operand has 432 places, 311 transitions, 3285 flow. Second operand 18 states and 2400 transitions. [2022-07-12 10:24:21,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 350 transitions, 4154 flow [2022-07-12 10:24:21,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 350 transitions, 4034 flow, removed 39 selfloop flow, removed 10 redundant places. [2022-07-12 10:24:21,841 INFO L242 Difference]: Finished difference. Result has 434 places, 291 transitions, 2868 flow [2022-07-12 10:24:21,841 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3171, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2868, PETRI_PLACES=434, PETRI_TRANSITIONS=291} [2022-07-12 10:24:21,841 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 277 predicate places. [2022-07-12 10:24:21,842 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 291 transitions, 2868 flow [2022-07-12 10:24:21,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:21,842 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:21,842 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:21,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-07-12 10:24:21,842 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:21,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:21,842 INFO L85 PathProgramCache]: Analyzing trace with hash -318225270, now seen corresponding path program 29 times [2022-07-12 10:24:21,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:21,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32091878] [2022-07-12 10:24:21,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:21,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:21,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:21,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:21,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:21,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32091878] [2022-07-12 10:24:21,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32091878] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:21,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:21,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:21,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123454165] [2022-07-12 10:24:21,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:21,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:21,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:21,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:21,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:21,925 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:21,926 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 291 transitions, 2868 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:21,926 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:21,926 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:21,926 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:22,404 INFO L129 PetriNetUnfolder]: 356/1798 cut-off events. [2022-07-12 10:24:22,404 INFO L130 PetriNetUnfolder]: For 13312/13384 co-relation queries the response was YES. [2022-07-12 10:24:22,423 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7970 conditions, 1798 events. 356/1798 cut-off events. For 13312/13384 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13601 event pairs, 232 based on Foata normal form. 10/1715 useless extension candidates. Maximal degree in co-relation 7817. Up to 735 conditions per place. [2022-07-12 10:24:22,427 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 120 selfloop transitions, 28 changer transitions 37/329 dead transitions. [2022-07-12 10:24:22,427 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 329 transitions, 3734 flow [2022-07-12 10:24:22,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:24:22,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:24:22,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2660 transitions. [2022-07-12 10:24:22,429 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2022-07-12 10:24:22,429 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2660 transitions. [2022-07-12 10:24:22,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2660 transitions. [2022-07-12 10:24:22,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:22,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2660 transitions. [2022-07-12 10:24:22,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.0) internal successors, (2660), 20 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:22,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:22,433 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:22,433 INFO L186 Difference]: Start difference. First operand has 434 places, 291 transitions, 2868 flow. Second operand 20 states and 2660 transitions. [2022-07-12 10:24:22,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 329 transitions, 3734 flow [2022-07-12 10:24:22,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 329 transitions, 3467 flow, removed 25 selfloop flow, removed 22 redundant places. [2022-07-12 10:24:22,511 INFO L242 Difference]: Finished difference. Result has 415 places, 280 transitions, 2532 flow [2022-07-12 10:24:22,512 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2654, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2532, PETRI_PLACES=415, PETRI_TRANSITIONS=280} [2022-07-12 10:24:22,512 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 258 predicate places. [2022-07-12 10:24:22,512 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 280 transitions, 2532 flow [2022-07-12 10:24:22,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:22,512 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:22,513 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:22,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-07-12 10:24:22,513 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:22,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:22,513 INFO L85 PathProgramCache]: Analyzing trace with hash 562491692, now seen corresponding path program 30 times [2022-07-12 10:24:22,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:22,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072978469] [2022-07-12 10:24:22,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:22,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:22,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:22,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:22,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072978469] [2022-07-12 10:24:22,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072978469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:22,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:22,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:22,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376556662] [2022-07-12 10:24:22,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:22,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:22,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:22,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:22,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:22,600 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:22,601 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 280 transitions, 2532 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:22,601 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:22,601 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:22,601 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:23,047 INFO L129 PetriNetUnfolder]: 343/1746 cut-off events. [2022-07-12 10:24:23,047 INFO L130 PetriNetUnfolder]: For 11705/11777 co-relation queries the response was YES. [2022-07-12 10:24:23,064 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7358 conditions, 1746 events. 343/1746 cut-off events. For 11705/11777 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13039 event pairs, 231 based on Foata normal form. 10/1665 useless extension candidates. Maximal degree in co-relation 7210. Up to 731 conditions per place. [2022-07-12 10:24:23,068 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 110 selfloop transitions, 15 changer transitions 40/309 dead transitions. [2022-07-12 10:24:23,069 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 309 transitions, 3160 flow [2022-07-12 10:24:23,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:24:23,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:24:23,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2523 transitions. [2022-07-12 10:24:23,070 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7631578947368421 [2022-07-12 10:24:23,070 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2523 transitions. [2022-07-12 10:24:23,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2523 transitions. [2022-07-12 10:24:23,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:23,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2523 transitions. [2022-07-12 10:24:23,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 132.78947368421052) internal successors, (2523), 19 states have internal predecessors, (2523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:23,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:23,074 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:23,074 INFO L186 Difference]: Start difference. First operand has 415 places, 280 transitions, 2532 flow. Second operand 19 states and 2523 transitions. [2022-07-12 10:24:23,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 309 transitions, 3160 flow [2022-07-12 10:24:23,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 309 transitions, 3008 flow, removed 24 selfloop flow, removed 22 redundant places. [2022-07-12 10:24:23,141 INFO L242 Difference]: Finished difference. Result has 397 places, 257 transitions, 2066 flow [2022-07-12 10:24:23,141 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2402, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2066, PETRI_PLACES=397, PETRI_TRANSITIONS=257} [2022-07-12 10:24:23,142 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 240 predicate places. [2022-07-12 10:24:23,142 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 257 transitions, 2066 flow [2022-07-12 10:24:23,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:23,143 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:23,143 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:23,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-07-12 10:24:23,143 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:23,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:23,143 INFO L85 PathProgramCache]: Analyzing trace with hash -2141377916, now seen corresponding path program 31 times [2022-07-12 10:24:23,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:23,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238681483] [2022-07-12 10:24:23,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:23,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:23,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:23,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:23,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238681483] [2022-07-12 10:24:23,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238681483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:23,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:23,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:23,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389705633] [2022-07-12 10:24:23,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:23,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:23,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:23,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:23,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:23,228 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:23,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 257 transitions, 2066 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:23,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:23,229 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:23,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:23,746 INFO L129 PetriNetUnfolder]: 351/1788 cut-off events. [2022-07-12 10:24:23,746 INFO L130 PetriNetUnfolder]: For 11695/11767 co-relation queries the response was YES. [2022-07-12 10:24:23,764 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7427 conditions, 1788 events. 351/1788 cut-off events. For 11695/11767 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13449 event pairs, 231 based on Foata normal form. 10/1706 useless extension candidates. Maximal degree in co-relation 7289. Up to 731 conditions per place. [2022-07-12 10:24:23,769 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 96 selfloop transitions, 33 changer transitions 43/316 dead transitions. [2022-07-12 10:24:23,769 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 316 transitions, 3279 flow [2022-07-12 10:24:23,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-12 10:24:23,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-12 10:24:23,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3057 transitions. [2022-07-12 10:24:23,771 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7638680659670165 [2022-07-12 10:24:23,771 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3057 transitions. [2022-07-12 10:24:23,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3057 transitions. [2022-07-12 10:24:23,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:23,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3057 transitions. [2022-07-12 10:24:23,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.91304347826087) internal successors, (3057), 23 states have internal predecessors, (3057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:23,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:23,775 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:23,775 INFO L186 Difference]: Start difference. First operand has 397 places, 257 transitions, 2066 flow. Second operand 23 states and 3057 transitions. [2022-07-12 10:24:23,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 316 transitions, 3279 flow [2022-07-12 10:24:23,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 316 transitions, 3071 flow, removed 25 selfloop flow, removed 20 redundant places. [2022-07-12 10:24:23,829 INFO L242 Difference]: Finished difference. Result has 380 places, 262 transitions, 2167 flow [2022-07-12 10:24:23,830 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1955, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2167, PETRI_PLACES=380, PETRI_TRANSITIONS=262} [2022-07-12 10:24:23,831 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 223 predicate places. [2022-07-12 10:24:23,831 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 262 transitions, 2167 flow [2022-07-12 10:24:23,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:23,832 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:23,832 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:23,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-07-12 10:24:23,832 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:23,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:23,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1314758992, now seen corresponding path program 32 times [2022-07-12 10:24:23,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:23,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002421290] [2022-07-12 10:24:23,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:23,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:23,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:23,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:23,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002421290] [2022-07-12 10:24:23,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002421290] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:23,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:23,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:23,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300129438] [2022-07-12 10:24:23,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:23,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:23,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:23,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:23,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:23,938 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:23,938 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 262 transitions, 2167 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:23,938 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:23,938 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:23,939 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:24,432 INFO L129 PetriNetUnfolder]: 347/1766 cut-off events. [2022-07-12 10:24:24,432 INFO L130 PetriNetUnfolder]: For 11060/11132 co-relation queries the response was YES. [2022-07-12 10:24:24,449 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7190 conditions, 1766 events. 347/1766 cut-off events. For 11060/11132 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13303 event pairs, 230 based on Foata normal form. 10/1682 useless extension candidates. Maximal degree in co-relation 7052. Up to 731 conditions per place. [2022-07-12 10:24:24,453 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 93 selfloop transitions, 35 changer transitions 41/313 dead transitions. [2022-07-12 10:24:24,453 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 313 transitions, 3186 flow [2022-07-12 10:24:24,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:24:24,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:24:24,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3188 transitions. [2022-07-12 10:24:24,455 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7634099616858238 [2022-07-12 10:24:24,455 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3188 transitions. [2022-07-12 10:24:24,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3188 transitions. [2022-07-12 10:24:24,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:24,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3188 transitions. [2022-07-12 10:24:24,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.83333333333334) internal successors, (3188), 24 states have internal predecessors, (3188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:24,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:24,459 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:24,459 INFO L186 Difference]: Start difference. First operand has 380 places, 262 transitions, 2167 flow. Second operand 24 states and 3188 transitions. [2022-07-12 10:24:24,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 313 transitions, 3186 flow [2022-07-12 10:24:24,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 313 transitions, 3035 flow, removed 39 selfloop flow, removed 16 redundant places. [2022-07-12 10:24:24,510 INFO L242 Difference]: Finished difference. Result has 386 places, 261 transitions, 2168 flow [2022-07-12 10:24:24,510 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2065, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2168, PETRI_PLACES=386, PETRI_TRANSITIONS=261} [2022-07-12 10:24:24,510 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 229 predicate places. [2022-07-12 10:24:24,511 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 261 transitions, 2168 flow [2022-07-12 10:24:24,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:24,511 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:24,511 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:24,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-07-12 10:24:24,511 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:24,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:24,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1535074004, now seen corresponding path program 33 times [2022-07-12 10:24:24,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:24,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329157359] [2022-07-12 10:24:24,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:24,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:24,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:24,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:24,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329157359] [2022-07-12 10:24:24,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329157359] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:24,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:24,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:24,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587967594] [2022-07-12 10:24:24,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:24,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:24,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:24,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:24,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:24,623 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:24,624 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 261 transitions, 2168 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:24,624 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:24,624 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:24,624 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:25,066 INFO L129 PetriNetUnfolder]: 339/1736 cut-off events. [2022-07-12 10:24:25,067 INFO L130 PetriNetUnfolder]: For 10669/10741 co-relation queries the response was YES. [2022-07-12 10:24:25,083 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7009 conditions, 1736 events. 339/1736 cut-off events. For 10669/10741 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 12985 event pairs, 232 based on Foata normal form. 10/1651 useless extension candidates. Maximal degree in co-relation 6871. Up to 729 conditions per place. [2022-07-12 10:24:25,087 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 87 selfloop transitions, 25 changer transitions 37/293 dead transitions. [2022-07-12 10:24:25,087 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 293 transitions, 2866 flow [2022-07-12 10:24:25,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:24:25,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:24:25,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2529 transitions. [2022-07-12 10:24:25,089 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.76497277676951 [2022-07-12 10:24:25,089 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2529 transitions. [2022-07-12 10:24:25,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2529 transitions. [2022-07-12 10:24:25,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:25,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2529 transitions. [2022-07-12 10:24:25,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.10526315789474) internal successors, (2529), 19 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:25,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:25,093 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:25,093 INFO L186 Difference]: Start difference. First operand has 386 places, 261 transitions, 2168 flow. Second operand 19 states and 2529 transitions. [2022-07-12 10:24:25,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 293 transitions, 2866 flow [2022-07-12 10:24:25,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 293 transitions, 2706 flow, removed 39 selfloop flow, removed 18 redundant places. [2022-07-12 10:24:25,141 INFO L242 Difference]: Finished difference. Result has 378 places, 250 transitions, 1917 flow [2022-07-12 10:24:25,141 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2045, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1917, PETRI_PLACES=378, PETRI_TRANSITIONS=250} [2022-07-12 10:24:25,141 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 221 predicate places. [2022-07-12 10:24:25,142 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 250 transitions, 1917 flow [2022-07-12 10:24:25,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:25,142 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:25,142 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:25,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-07-12 10:24:25,142 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:25,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:25,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1592779014, now seen corresponding path program 34 times [2022-07-12 10:24:25,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:25,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400132337] [2022-07-12 10:24:25,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:25,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:25,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:25,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:25,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400132337] [2022-07-12 10:24:25,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400132337] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:25,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:25,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:25,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286817767] [2022-07-12 10:24:25,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:25,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:25,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:25,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:25,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:25,229 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:25,230 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 250 transitions, 1917 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:25,230 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:25,230 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:25,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:25,659 INFO L129 PetriNetUnfolder]: 327/1689 cut-off events. [2022-07-12 10:24:25,660 INFO L130 PetriNetUnfolder]: For 9776/9848 co-relation queries the response was YES. [2022-07-12 10:24:25,676 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6637 conditions, 1689 events. 327/1689 cut-off events. For 9776/9848 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 12616 event pairs, 230 based on Foata normal form. 10/1607 useless extension candidates. Maximal degree in co-relation 6506. Up to 727 conditions per place. [2022-07-12 10:24:25,680 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 81 selfloop transitions, 13 changer transitions 37/275 dead transitions. [2022-07-12 10:24:25,680 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 275 transitions, 2447 flow [2022-07-12 10:24:25,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:24:25,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:24:25,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2656 transitions. [2022-07-12 10:24:25,682 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7632183908045977 [2022-07-12 10:24:25,682 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2656 transitions. [2022-07-12 10:24:25,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2656 transitions. [2022-07-12 10:24:25,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:25,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2656 transitions. [2022-07-12 10:24:25,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.8) internal successors, (2656), 20 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:25,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:25,686 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:25,686 INFO L186 Difference]: Start difference. First operand has 378 places, 250 transitions, 1917 flow. Second operand 20 states and 2656 transitions. [2022-07-12 10:24:25,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 275 transitions, 2447 flow [2022-07-12 10:24:25,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 275 transitions, 2277 flow, removed 26 selfloop flow, removed 23 redundant places. [2022-07-12 10:24:25,728 INFO L242 Difference]: Finished difference. Result has 363 places, 232 transitions, 1547 flow [2022-07-12 10:24:25,728 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1783, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1547, PETRI_PLACES=363, PETRI_TRANSITIONS=232} [2022-07-12 10:24:25,729 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 206 predicate places. [2022-07-12 10:24:25,729 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 232 transitions, 1547 flow [2022-07-12 10:24:25,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:25,729 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:25,729 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:25,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-07-12 10:24:25,729 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:25,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:25,730 INFO L85 PathProgramCache]: Analyzing trace with hash 542274912, now seen corresponding path program 35 times [2022-07-12 10:24:25,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:25,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900561207] [2022-07-12 10:24:25,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:25,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:25,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:25,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:25,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900561207] [2022-07-12 10:24:25,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900561207] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:25,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:25,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:24:25,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82646843] [2022-07-12 10:24:25,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:25,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:24:25,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:25,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:24:25,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:24:25,811 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-07-12 10:24:25,812 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 232 transitions, 1547 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:25,812 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:25,812 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-07-12 10:24:25,812 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:26,230 INFO L129 PetriNetUnfolder]: 314/1615 cut-off events. [2022-07-12 10:24:26,231 INFO L130 PetriNetUnfolder]: For 9104/9176 co-relation queries the response was YES. [2022-07-12 10:24:26,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6209 conditions, 1615 events. 314/1615 cut-off events. For 9104/9176 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 11855 event pairs, 224 based on Foata normal form. 10/1537 useless extension candidates. Maximal degree in co-relation 6085. Up to 707 conditions per place. [2022-07-12 10:24:26,248 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 67 selfloop transitions, 2 changer transitions 40/251 dead transitions. [2022-07-12 10:24:26,248 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 251 transitions, 1922 flow [2022-07-12 10:24:26,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:24:26,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:24:26,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2645 transitions. [2022-07-12 10:24:26,250 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7600574712643678 [2022-07-12 10:24:26,250 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2645 transitions. [2022-07-12 10:24:26,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2645 transitions. [2022-07-12 10:24:26,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:26,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2645 transitions. [2022-07-12 10:24:26,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.25) internal successors, (2645), 20 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:26,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:26,253 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:26,254 INFO L186 Difference]: Start difference. First operand has 363 places, 232 transitions, 1547 flow. Second operand 20 states and 2645 transitions. [2022-07-12 10:24:26,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 251 transitions, 1922 flow [2022-07-12 10:24:26,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 251 transitions, 1833 flow, removed 16 selfloop flow, removed 21 redundant places. [2022-07-12 10:24:26,290 INFO L242 Difference]: Finished difference. Result has 341 places, 205 transitions, 1134 flow [2022-07-12 10:24:26,290 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1134, PETRI_PLACES=341, PETRI_TRANSITIONS=205} [2022-07-12 10:24:26,290 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 184 predicate places. [2022-07-12 10:24:26,290 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 205 transitions, 1134 flow [2022-07-12 10:24:26,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:26,291 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:26,291 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:26,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-07-12 10:24:26,291 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:26,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:26,292 INFO L85 PathProgramCache]: Analyzing trace with hash -690803015, now seen corresponding path program 1 times [2022-07-12 10:24:26,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:26,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866772559] [2022-07-12 10:24:26,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:26,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:26,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:26,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:26,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866772559] [2022-07-12 10:24:26,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866772559] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:26,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:26,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:24:26,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052600480] [2022-07-12 10:24:26,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:26,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:24:26,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:26,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:24:26,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:24:26,492 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:24:26,492 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 205 transitions, 1134 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:26,492 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:26,492 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:24:26,492 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:27,809 INFO L129 PetriNetUnfolder]: 887/3697 cut-off events. [2022-07-12 10:24:27,810 INFO L130 PetriNetUnfolder]: For 16466/16507 co-relation queries the response was YES. [2022-07-12 10:24:27,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11999 conditions, 3697 events. 887/3697 cut-off events. For 16466/16507 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 32120 event pairs, 247 based on Foata normal form. 41/3607 useless extension candidates. Maximal degree in co-relation 11883. Up to 569 conditions per place. [2022-07-12 10:24:27,851 INFO L132 encePairwiseOnDemand]: 145/174 looper letters, 301 selfloop transitions, 40 changer transitions 39/471 dead transitions. [2022-07-12 10:24:27,851 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 471 transitions, 3902 flow [2022-07-12 10:24:27,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 10:24:27,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-12 10:24:27,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3045 transitions. [2022-07-12 10:24:27,853 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.625 [2022-07-12 10:24:27,853 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3045 transitions. [2022-07-12 10:24:27,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3045 transitions. [2022-07-12 10:24:27,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:27,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3045 transitions. [2022-07-12 10:24:27,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 108.75) internal successors, (3045), 28 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:27,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:27,858 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:27,858 INFO L186 Difference]: Start difference. First operand has 341 places, 205 transitions, 1134 flow. Second operand 28 states and 3045 transitions. [2022-07-12 10:24:27,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 471 transitions, 3902 flow [2022-07-12 10:24:27,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 471 transitions, 3711 flow, removed 73 selfloop flow, removed 28 redundant places. [2022-07-12 10:24:27,976 INFO L242 Difference]: Finished difference. Result has 329 places, 227 transitions, 1433 flow [2022-07-12 10:24:27,976 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1433, PETRI_PLACES=329, PETRI_TRANSITIONS=227} [2022-07-12 10:24:27,976 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 172 predicate places. [2022-07-12 10:24:27,976 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 227 transitions, 1433 flow [2022-07-12 10:24:27,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:27,977 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:27,977 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:27,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-07-12 10:24:27,977 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:27,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:27,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1500441663, now seen corresponding path program 2 times [2022-07-12 10:24:27,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:27,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693028908] [2022-07-12 10:24:27,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:27,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:28,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:28,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:28,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693028908] [2022-07-12 10:24:28,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693028908] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:28,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:28,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:24:28,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302622612] [2022-07-12 10:24:28,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:28,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:24:28,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:28,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:24:28,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:24:28,223 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:24:28,223 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 227 transitions, 1433 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:28,223 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:28,223 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:24:28,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:30,695 INFO L129 PetriNetUnfolder]: 1269/5705 cut-off events. [2022-07-12 10:24:30,695 INFO L130 PetriNetUnfolder]: For 34766/34812 co-relation queries the response was YES. [2022-07-12 10:24:30,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20601 conditions, 5705 events. 1269/5705 cut-off events. For 34766/34812 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 57551 event pairs, 337 based on Foata normal form. 51/5603 useless extension candidates. Maximal degree in co-relation 20483. Up to 741 conditions per place. [2022-07-12 10:24:30,763 INFO L132 encePairwiseOnDemand]: 142/174 looper letters, 338 selfloop transitions, 190 changer transitions 115/734 dead transitions. [2022-07-12 10:24:30,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 734 transitions, 6866 flow [2022-07-12 10:24:30,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-12 10:24:30,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-07-12 10:24:30,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 4373 transitions. [2022-07-12 10:24:30,766 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6283045977011494 [2022-07-12 10:24:30,766 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 4373 transitions. [2022-07-12 10:24:30,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 4373 transitions. [2022-07-12 10:24:30,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:30,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 4373 transitions. [2022-07-12 10:24:30,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 109.325) internal successors, (4373), 40 states have internal predecessors, (4373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:30,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 174.0) internal successors, (7134), 41 states have internal predecessors, (7134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:30,773 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 174.0) internal successors, (7134), 41 states have internal predecessors, (7134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:30,773 INFO L186 Difference]: Start difference. First operand has 329 places, 227 transitions, 1433 flow. Second operand 40 states and 4373 transitions. [2022-07-12 10:24:30,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 734 transitions, 6866 flow [2022-07-12 10:24:30,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 734 transitions, 6574 flow, removed 143 selfloop flow, removed 14 redundant places. [2022-07-12 10:24:30,887 INFO L242 Difference]: Finished difference. Result has 377 places, 389 transitions, 3725 flow [2022-07-12 10:24:30,887 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1353, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=3725, PETRI_PLACES=377, PETRI_TRANSITIONS=389} [2022-07-12 10:24:30,887 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 220 predicate places. [2022-07-12 10:24:30,887 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 389 transitions, 3725 flow [2022-07-12 10:24:30,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:30,888 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:30,888 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:30,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-07-12 10:24:30,888 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:30,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:30,888 INFO L85 PathProgramCache]: Analyzing trace with hash 961265543, now seen corresponding path program 3 times [2022-07-12 10:24:30,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:30,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914201703] [2022-07-12 10:24:30,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:30,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:31,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:31,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:31,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914201703] [2022-07-12 10:24:31,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914201703] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:31,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:31,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:24:31,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730869161] [2022-07-12 10:24:31,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:31,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:24:31,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:31,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:24:31,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:24:31,100 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:24:31,101 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 389 transitions, 3725 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:31,101 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:31,101 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:24:31,101 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:32,927 INFO L129 PetriNetUnfolder]: 1334/5870 cut-off events. [2022-07-12 10:24:32,928 INFO L130 PetriNetUnfolder]: For 58585/58636 co-relation queries the response was YES. [2022-07-12 10:24:32,988 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24794 conditions, 5870 events. 1334/5870 cut-off events. For 58585/58636 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 59169 event pairs, 436 based on Foata normal form. 51/5721 useless extension candidates. Maximal degree in co-relation 24652. Up to 1334 conditions per place. [2022-07-12 10:24:33,004 INFO L132 encePairwiseOnDemand]: 142/174 looper letters, 369 selfloop transitions, 131 changer transitions 109/700 dead transitions. [2022-07-12 10:24:33,004 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 700 transitions, 8101 flow [2022-07-12 10:24:33,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-12 10:24:33,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-07-12 10:24:33,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3872 transitions. [2022-07-12 10:24:33,006 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6181353767560664 [2022-07-12 10:24:33,006 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3872 transitions. [2022-07-12 10:24:33,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3872 transitions. [2022-07-12 10:24:33,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:33,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3872 transitions. [2022-07-12 10:24:33,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 107.55555555555556) internal successors, (3872), 36 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:33,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 174.0) internal successors, (6438), 37 states have internal predecessors, (6438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:33,012 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 174.0) internal successors, (6438), 37 states have internal predecessors, (6438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:33,012 INFO L186 Difference]: Start difference. First operand has 377 places, 389 transitions, 3725 flow. Second operand 36 states and 3872 transitions. [2022-07-12 10:24:33,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 700 transitions, 8101 flow [2022-07-12 10:24:33,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 700 transitions, 7638 flow, removed 219 selfloop flow, removed 7 redundant places. [2022-07-12 10:24:33,261 INFO L242 Difference]: Finished difference. Result has 433 places, 404 transitions, 4104 flow [2022-07-12 10:24:33,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3316, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=4104, PETRI_PLACES=433, PETRI_TRANSITIONS=404} [2022-07-12 10:24:33,262 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 276 predicate places. [2022-07-12 10:24:33,262 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 404 transitions, 4104 flow [2022-07-12 10:24:33,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:33,263 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:33,263 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:33,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-07-12 10:24:33,263 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:33,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:33,263 INFO L85 PathProgramCache]: Analyzing trace with hash -898014253, now seen corresponding path program 4 times [2022-07-12 10:24:33,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:33,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878215743] [2022-07-12 10:24:33,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:33,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:33,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:33,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:33,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878215743] [2022-07-12 10:24:33,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878215743] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:33,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:33,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:24:33,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121495077] [2022-07-12 10:24:33,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:33,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:24:33,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:33,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:24:33,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:24:33,509 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:24:33,510 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 404 transitions, 4104 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:33,510 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:33,510 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:24:33,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:35,885 INFO L129 PetriNetUnfolder]: 1304/5598 cut-off events. [2022-07-12 10:24:35,886 INFO L130 PetriNetUnfolder]: For 66916/66971 co-relation queries the response was YES. [2022-07-12 10:24:35,949 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25576 conditions, 5598 events. 1304/5598 cut-off events. For 66916/66971 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 55581 event pairs, 474 based on Foata normal form. 55/5441 useless extension candidates. Maximal degree in co-relation 25408. Up to 1334 conditions per place. [2022-07-12 10:24:35,963 INFO L132 encePairwiseOnDemand]: 142/174 looper letters, 362 selfloop transitions, 133 changer transitions 104/690 dead transitions. [2022-07-12 10:24:35,963 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 690 transitions, 8604 flow [2022-07-12 10:24:35,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 10:24:35,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-12 10:24:35,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3774 transitions. [2022-07-12 10:24:35,965 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6197044334975369 [2022-07-12 10:24:35,965 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3774 transitions. [2022-07-12 10:24:35,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3774 transitions. [2022-07-12 10:24:35,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:35,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3774 transitions. [2022-07-12 10:24:35,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 107.82857142857142) internal successors, (3774), 35 states have internal predecessors, (3774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:35,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 174.0) internal successors, (6264), 36 states have internal predecessors, (6264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:35,971 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 174.0) internal successors, (6264), 36 states have internal predecessors, (6264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:35,971 INFO L186 Difference]: Start difference. First operand has 433 places, 404 transitions, 4104 flow. Second operand 35 states and 3774 transitions. [2022-07-12 10:24:35,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 690 transitions, 8604 flow [2022-07-12 10:24:36,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 690 transitions, 8140 flow, removed 225 selfloop flow, removed 29 redundant places. [2022-07-12 10:24:36,226 INFO L242 Difference]: Finished difference. Result has 438 places, 405 transitions, 4434 flow [2022-07-12 10:24:36,226 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=4002, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4434, PETRI_PLACES=438, PETRI_TRANSITIONS=405} [2022-07-12 10:24:36,226 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 281 predicate places. [2022-07-12 10:24:36,226 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 405 transitions, 4434 flow [2022-07-12 10:24:36,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:36,227 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:36,227 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:36,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-07-12 10:24:36,227 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:36,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:36,227 INFO L85 PathProgramCache]: Analyzing trace with hash -2133687005, now seen corresponding path program 1 times [2022-07-12 10:24:36,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:36,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112456108] [2022-07-12 10:24:36,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:36,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:36,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:36,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:36,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112456108] [2022-07-12 10:24:36,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112456108] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:36,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:36,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:24:36,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619472761] [2022-07-12 10:24:36,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:36,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:24:36,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:36,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:24:36,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:24:36,371 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2022-07-12 10:24:36,371 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 405 transitions, 4434 flow. Second operand has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:36,371 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:36,371 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2022-07-12 10:24:36,371 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:36,894 INFO L129 PetriNetUnfolder]: 377/2806 cut-off events. [2022-07-12 10:24:36,895 INFO L130 PetriNetUnfolder]: For 38042/38141 co-relation queries the response was YES. [2022-07-12 10:24:36,929 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12496 conditions, 2806 events. 377/2806 cut-off events. For 38042/38141 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 24662 event pairs, 170 based on Foata normal form. 39/2717 useless extension candidates. Maximal degree in co-relation 12328. Up to 172 conditions per place. [2022-07-12 10:24:36,936 INFO L132 encePairwiseOnDemand]: 166/174 looper letters, 62 selfloop transitions, 30 changer transitions 1/422 dead transitions. [2022-07-12 10:24:36,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 422 transitions, 4759 flow [2022-07-12 10:24:36,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:24:36,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:24:36,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 751 transitions. [2022-07-12 10:24:36,937 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8632183908045977 [2022-07-12 10:24:36,937 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 751 transitions. [2022-07-12 10:24:36,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 751 transitions. [2022-07-12 10:24:36,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:36,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 751 transitions. [2022-07-12 10:24:36,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.2) internal successors, (751), 5 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:36,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:36,939 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:36,939 INFO L186 Difference]: Start difference. First operand has 438 places, 405 transitions, 4434 flow. Second operand 5 states and 751 transitions. [2022-07-12 10:24:36,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 422 transitions, 4759 flow [2022-07-12 10:24:37,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 422 transitions, 4350 flow, removed 43 selfloop flow, removed 34 redundant places. [2022-07-12 10:24:37,078 INFO L242 Difference]: Finished difference. Result has 384 places, 405 transitions, 4151 flow [2022-07-12 10:24:37,078 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3994, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4151, PETRI_PLACES=384, PETRI_TRANSITIONS=405} [2022-07-12 10:24:37,078 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 227 predicate places. [2022-07-12 10:24:37,079 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 405 transitions, 4151 flow [2022-07-12 10:24:37,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:37,079 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:37,079 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:37,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-07-12 10:24:37,079 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:37,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:37,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1744949675, now seen corresponding path program 2 times [2022-07-12 10:24:37,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:37,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281089229] [2022-07-12 10:24:37,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:37,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:37,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:37,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:37,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281089229] [2022-07-12 10:24:37,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281089229] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:37,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:37,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:24:37,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667675721] [2022-07-12 10:24:37,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:37,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:24:37,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:37,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:24:37,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:24:37,123 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2022-07-12 10:24:37,123 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 405 transitions, 4151 flow. Second operand has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:37,123 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:37,123 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2022-07-12 10:24:37,124 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:37,492 INFO L129 PetriNetUnfolder]: 234/1955 cut-off events. [2022-07-12 10:24:37,493 INFO L130 PetriNetUnfolder]: For 19371/19429 co-relation queries the response was YES. [2022-07-12 10:24:37,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7663 conditions, 1955 events. 234/1955 cut-off events. For 19371/19429 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 15594 event pairs, 108 based on Foata normal form. 31/1895 useless extension candidates. Maximal degree in co-relation 7520. Up to 106 conditions per place. [2022-07-12 10:24:37,552 INFO L132 encePairwiseOnDemand]: 162/174 looper letters, 51 selfloop transitions, 12 changer transitions 34/352 dead transitions. [2022-07-12 10:24:37,553 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 352 transitions, 3457 flow [2022-07-12 10:24:37,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:24:37,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:24:37,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 749 transitions. [2022-07-12 10:24:37,554 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.860919540229885 [2022-07-12 10:24:37,554 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 749 transitions. [2022-07-12 10:24:37,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 749 transitions. [2022-07-12 10:24:37,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:37,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 749 transitions. [2022-07-12 10:24:37,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.8) internal successors, (749), 5 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:37,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:37,556 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:37,556 INFO L186 Difference]: Start difference. First operand has 384 places, 405 transitions, 4151 flow. Second operand 5 states and 749 transitions. [2022-07-12 10:24:37,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 352 transitions, 3457 flow [2022-07-12 10:24:37,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 352 transitions, 3187 flow, removed 75 selfloop flow, removed 10 redundant places. [2022-07-12 10:24:37,645 INFO L242 Difference]: Finished difference. Result has 379 places, 308 transitions, 2676 flow [2022-07-12 10:24:37,646 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2924, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2676, PETRI_PLACES=379, PETRI_TRANSITIONS=308} [2022-07-12 10:24:37,646 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 222 predicate places. [2022-07-12 10:24:37,646 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 308 transitions, 2676 flow [2022-07-12 10:24:37,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:37,646 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:37,647 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:37,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-07-12 10:24:37,647 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:37,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:37,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1469610441, now seen corresponding path program 5 times [2022-07-12 10:24:37,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:37,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543562150] [2022-07-12 10:24:37,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:37,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:37,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:37,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:37,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543562150] [2022-07-12 10:24:37,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543562150] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:37,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:37,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:24:37,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598046116] [2022-07-12 10:24:37,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:37,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:24:37,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:37,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:24:37,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:24:37,875 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:24:37,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 308 transitions, 2676 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:37,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:37,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:24:37,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:39,534 INFO L129 PetriNetUnfolder]: 777/3417 cut-off events. [2022-07-12 10:24:39,535 INFO L130 PetriNetUnfolder]: For 31100/31129 co-relation queries the response was YES. [2022-07-12 10:24:39,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14462 conditions, 3417 events. 777/3417 cut-off events. For 31100/31129 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 30334 event pairs, 347 based on Foata normal form. 31/3284 useless extension candidates. Maximal degree in co-relation 14326. Up to 777 conditions per place. [2022-07-12 10:24:39,583 INFO L132 encePairwiseOnDemand]: 146/174 looper letters, 261 selfloop transitions, 91 changer transitions 73/512 dead transitions. [2022-07-12 10:24:39,583 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 512 transitions, 5540 flow [2022-07-12 10:24:39,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-12 10:24:39,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-12 10:24:39,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3534 transitions. [2022-07-12 10:24:39,585 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6154649947753396 [2022-07-12 10:24:39,585 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3534 transitions. [2022-07-12 10:24:39,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3534 transitions. [2022-07-12 10:24:39,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:39,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3534 transitions. [2022-07-12 10:24:39,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 107.0909090909091) internal successors, (3534), 33 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:39,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:39,591 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:39,591 INFO L186 Difference]: Start difference. First operand has 379 places, 308 transitions, 2676 flow. Second operand 33 states and 3534 transitions. [2022-07-12 10:24:39,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 512 transitions, 5540 flow [2022-07-12 10:24:39,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 512 transitions, 5228 flow, removed 122 selfloop flow, removed 20 redundant places. [2022-07-12 10:24:39,685 INFO L242 Difference]: Finished difference. Result has 393 places, 317 transitions, 2986 flow [2022-07-12 10:24:39,686 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2546, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2986, PETRI_PLACES=393, PETRI_TRANSITIONS=317} [2022-07-12 10:24:39,687 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 236 predicate places. [2022-07-12 10:24:39,687 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 317 transitions, 2986 flow [2022-07-12 10:24:39,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:39,687 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:39,687 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:39,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-07-12 10:24:39,687 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:39,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:39,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1553984415, now seen corresponding path program 6 times [2022-07-12 10:24:39,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:39,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523242850] [2022-07-12 10:24:39,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:39,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:39,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:39,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:39,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523242850] [2022-07-12 10:24:39,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523242850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:39,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:39,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:24:39,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786517574] [2022-07-12 10:24:39,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:39,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:24:39,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:39,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:24:39,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:24:39,726 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2022-07-12 10:24:39,727 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 317 transitions, 2986 flow. Second operand has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:39,727 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:39,727 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2022-07-12 10:24:39,727 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:39,879 INFO L129 PetriNetUnfolder]: 91/902 cut-off events. [2022-07-12 10:24:39,880 INFO L130 PetriNetUnfolder]: For 7711/7734 co-relation queries the response was YES. [2022-07-12 10:24:39,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3309 conditions, 902 events. 91/902 cut-off events. For 7711/7734 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 5434 event pairs, 56 based on Foata normal form. 22/879 useless extension candidates. Maximal degree in co-relation 3165. Up to 79 conditions per place. [2022-07-12 10:24:39,890 INFO L132 encePairwiseOnDemand]: 166/174 looper letters, 36 selfloop transitions, 4 changer transitions 22/211 dead transitions. [2022-07-12 10:24:39,890 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 211 transitions, 1514 flow [2022-07-12 10:24:39,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:24:39,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:24:39,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 740 transitions. [2022-07-12 10:24:39,891 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8505747126436781 [2022-07-12 10:24:39,891 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 740 transitions. [2022-07-12 10:24:39,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 740 transitions. [2022-07-12 10:24:39,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:39,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 740 transitions. [2022-07-12 10:24:39,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:39,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:39,893 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:39,893 INFO L186 Difference]: Start difference. First operand has 393 places, 317 transitions, 2986 flow. Second operand 5 states and 740 transitions. [2022-07-12 10:24:39,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 211 transitions, 1514 flow [2022-07-12 10:24:39,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 211 transitions, 1293 flow, removed 83 selfloop flow, removed 59 redundant places. [2022-07-12 10:24:39,918 INFO L242 Difference]: Finished difference. Result has 277 places, 184 transitions, 940 flow [2022-07-12 10:24:39,918 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1145, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=940, PETRI_PLACES=277, PETRI_TRANSITIONS=184} [2022-07-12 10:24:39,918 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 120 predicate places. [2022-07-12 10:24:39,919 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 184 transitions, 940 flow [2022-07-12 10:24:39,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:39,919 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:39,919 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:39,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-07-12 10:24:39,919 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:39,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:39,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1250025809, now seen corresponding path program 7 times [2022-07-12 10:24:39,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:39,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118150242] [2022-07-12 10:24:39,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:39,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:40,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:40,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:40,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118150242] [2022-07-12 10:24:40,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118150242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:40,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:40,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:24:40,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803093727] [2022-07-12 10:24:40,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:40,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:24:40,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:40,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:24:40,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:24:40,124 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:24:40,124 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 184 transitions, 940 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:40,124 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:40,124 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:24:40,124 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:41,779 INFO L129 PetriNetUnfolder]: 395/1772 cut-off events. [2022-07-12 10:24:41,780 INFO L130 PetriNetUnfolder]: For 7619/7619 co-relation queries the response was YES. [2022-07-12 10:24:41,792 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5813 conditions, 1772 events. 395/1772 cut-off events. For 7619/7619 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 12641 event pairs, 160 based on Foata normal form. 1/1713 useless extension candidates. Maximal degree in co-relation 5724. Up to 432 conditions per place. [2022-07-12 10:24:41,797 INFO L132 encePairwiseOnDemand]: 148/174 looper letters, 183 selfloop transitions, 20 changer transitions 78/366 dead transitions. [2022-07-12 10:24:41,797 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 366 transitions, 2584 flow [2022-07-12 10:24:41,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-12 10:24:41,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-12 10:24:41,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 4022 transitions. [2022-07-12 10:24:41,799 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6082879612825166 [2022-07-12 10:24:41,799 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 4022 transitions. [2022-07-12 10:24:41,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 4022 transitions. [2022-07-12 10:24:41,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:41,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 4022 transitions. [2022-07-12 10:24:41,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 105.84210526315789) internal successors, (4022), 38 states have internal predecessors, (4022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:41,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 174.0) internal successors, (6786), 39 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:41,805 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 174.0) internal successors, (6786), 39 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:41,806 INFO L186 Difference]: Start difference. First operand has 277 places, 184 transitions, 940 flow. Second operand 38 states and 4022 transitions. [2022-07-12 10:24:41,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 366 transitions, 2584 flow [2022-07-12 10:24:41,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 366 transitions, 2416 flow, removed 36 selfloop flow, removed 17 redundant places. [2022-07-12 10:24:41,824 INFO L242 Difference]: Finished difference. Result has 320 places, 184 transitions, 972 flow [2022-07-12 10:24:41,824 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=972, PETRI_PLACES=320, PETRI_TRANSITIONS=184} [2022-07-12 10:24:41,825 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 163 predicate places. [2022-07-12 10:24:41,825 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 184 transitions, 972 flow [2022-07-12 10:24:41,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:41,825 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:41,825 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:41,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-07-12 10:24:41,826 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:41,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:41,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1744371307, now seen corresponding path program 3 times [2022-07-12 10:24:41,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:41,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980117753] [2022-07-12 10:24:41,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:41,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:41,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:41,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:41,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980117753] [2022-07-12 10:24:41,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980117753] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:41,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:41,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:24:41,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035598879] [2022-07-12 10:24:41,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:41,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:24:41,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:41,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:24:41,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:24:41,878 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2022-07-12 10:24:41,879 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 184 transitions, 972 flow. Second operand has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:41,879 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:41,879 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2022-07-12 10:24:41,879 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:42,039 INFO L129 PetriNetUnfolder]: 76/729 cut-off events. [2022-07-12 10:24:42,039 INFO L130 PetriNetUnfolder]: For 2445/2452 co-relation queries the response was YES. [2022-07-12 10:24:42,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2189 conditions, 729 events. 76/729 cut-off events. For 2445/2452 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3990 event pairs, 46 based on Foata normal form. 5/692 useless extension candidates. Maximal degree in co-relation 2081. Up to 79 conditions per place. [2022-07-12 10:24:42,047 INFO L132 encePairwiseOnDemand]: 169/174 looper letters, 32 selfloop transitions, 1 changer transitions 6/183 dead transitions. [2022-07-12 10:24:42,047 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 183 transitions, 1023 flow [2022-07-12 10:24:42,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:24:42,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:24:42,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 729 transitions. [2022-07-12 10:24:42,048 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8379310344827586 [2022-07-12 10:24:42,048 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 729 transitions. [2022-07-12 10:24:42,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 729 transitions. [2022-07-12 10:24:42,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:42,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 729 transitions. [2022-07-12 10:24:42,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.8) internal successors, (729), 5 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:42,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:42,049 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:42,050 INFO L186 Difference]: Start difference. First operand has 320 places, 184 transitions, 972 flow. Second operand 5 states and 729 transitions. [2022-07-12 10:24:42,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 183 transitions, 1023 flow [2022-07-12 10:24:42,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 183 transitions, 932 flow, removed 31 selfloop flow, removed 34 redundant places. [2022-07-12 10:24:42,060 INFO L242 Difference]: Finished difference. Result has 257 places, 175 transitions, 799 flow [2022-07-12 10:24:42,060 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=799, PETRI_PLACES=257, PETRI_TRANSITIONS=175} [2022-07-12 10:24:42,060 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 100 predicate places. [2022-07-12 10:24:42,060 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 175 transitions, 799 flow [2022-07-12 10:24:42,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:42,061 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:42,061 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:42,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-07-12 10:24:42,061 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:42,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:42,061 INFO L85 PathProgramCache]: Analyzing trace with hash -367912345, now seen corresponding path program 8 times [2022-07-12 10:24:42,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:42,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620701365] [2022-07-12 10:24:42,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:42,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:42,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:42,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:42,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620701365] [2022-07-12 10:24:42,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620701365] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:42,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:42,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:24:42,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464790625] [2022-07-12 10:24:42,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:42,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:24:42,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:42,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:24:42,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:24:42,245 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:24:42,246 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 175 transitions, 799 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:42,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:42,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:24:42,246 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:43,052 INFO L129 PetriNetUnfolder]: 343/1321 cut-off events. [2022-07-12 10:24:43,052 INFO L130 PetriNetUnfolder]: For 4469/4469 co-relation queries the response was YES. [2022-07-12 10:24:43,059 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4466 conditions, 1321 events. 343/1321 cut-off events. For 4469/4469 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 8239 event pairs, 156 based on Foata normal form. 1/1258 useless extension candidates. Maximal degree in co-relation 4388. Up to 432 conditions per place. [2022-07-12 10:24:43,063 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 143 selfloop transitions, 35 changer transitions 35/298 dead transitions. [2022-07-12 10:24:43,063 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 298 transitions, 2187 flow [2022-07-12 10:24:43,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-12 10:24:43,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-12 10:24:43,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2756 transitions. [2022-07-12 10:24:43,065 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6091954022988506 [2022-07-12 10:24:43,065 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2756 transitions. [2022-07-12 10:24:43,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2756 transitions. [2022-07-12 10:24:43,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:43,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2756 transitions. [2022-07-12 10:24:43,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 106.0) internal successors, (2756), 26 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:43,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:43,070 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:43,070 INFO L186 Difference]: Start difference. First operand has 257 places, 175 transitions, 799 flow. Second operand 26 states and 2756 transitions. [2022-07-12 10:24:43,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 298 transitions, 2187 flow [2022-07-12 10:24:43,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 298 transitions, 2138 flow, removed 5 selfloop flow, removed 8 redundant places. [2022-07-12 10:24:43,081 INFO L242 Difference]: Finished difference. Result has 284 places, 195 transitions, 1190 flow [2022-07-12 10:24:43,082 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1190, PETRI_PLACES=284, PETRI_TRANSITIONS=195} [2022-07-12 10:24:43,082 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 127 predicate places. [2022-07-12 10:24:43,082 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 195 transitions, 1190 flow [2022-07-12 10:24:43,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:43,083 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:43,083 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:43,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-07-12 10:24:43,083 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:43,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:43,083 INFO L85 PathProgramCache]: Analyzing trace with hash 596934951, now seen corresponding path program 9 times [2022-07-12 10:24:43,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:43,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497320027] [2022-07-12 10:24:43,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:43,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:43,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:43,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:43,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497320027] [2022-07-12 10:24:43,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497320027] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:43,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:43,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:24:43,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816032050] [2022-07-12 10:24:43,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:43,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:24:43,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:43,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:24:43,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:24:43,287 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:24:43,288 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 195 transitions, 1190 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:43,288 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:43,288 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:24:43,288 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:44,593 INFO L129 PetriNetUnfolder]: 424/1698 cut-off events. [2022-07-12 10:24:44,594 INFO L130 PetriNetUnfolder]: For 9372/9372 co-relation queries the response was YES. [2022-07-12 10:24:44,606 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6552 conditions, 1698 events. 424/1698 cut-off events. For 9372/9372 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 11896 event pairs, 201 based on Foata normal form. 1/1616 useless extension candidates. Maximal degree in co-relation 6462. Up to 432 conditions per place. [2022-07-12 10:24:44,611 INFO L132 encePairwiseOnDemand]: 149/174 looper letters, 196 selfloop transitions, 31 changer transitions 74/386 dead transitions. [2022-07-12 10:24:44,611 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 386 transitions, 3272 flow [2022-07-12 10:24:44,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-12 10:24:44,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-07-12 10:24:44,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3823 transitions. [2022-07-12 10:24:44,613 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6103128991060025 [2022-07-12 10:24:44,613 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3823 transitions. [2022-07-12 10:24:44,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3823 transitions. [2022-07-12 10:24:44,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:44,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3823 transitions. [2022-07-12 10:24:44,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 106.19444444444444) internal successors, (3823), 36 states have internal predecessors, (3823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:44,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 174.0) internal successors, (6438), 37 states have internal predecessors, (6438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:44,619 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 174.0) internal successors, (6438), 37 states have internal predecessors, (6438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:44,620 INFO L186 Difference]: Start difference. First operand has 284 places, 195 transitions, 1190 flow. Second operand 36 states and 3823 transitions. [2022-07-12 10:24:44,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 386 transitions, 3272 flow [2022-07-12 10:24:44,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 386 transitions, 2969 flow, removed 112 selfloop flow, removed 17 redundant places. [2022-07-12 10:24:44,647 INFO L242 Difference]: Finished difference. Result has 321 places, 201 transitions, 1327 flow [2022-07-12 10:24:44,647 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=1327, PETRI_PLACES=321, PETRI_TRANSITIONS=201} [2022-07-12 10:24:44,648 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 164 predicate places. [2022-07-12 10:24:44,648 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 201 transitions, 1327 flow [2022-07-12 10:24:44,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:44,648 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:44,648 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:44,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-07-12 10:24:44,649 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:44,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:44,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1161914407, now seen corresponding path program 10 times [2022-07-12 10:24:44,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:44,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059450366] [2022-07-12 10:24:44,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:44,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:44,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:44,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:44,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059450366] [2022-07-12 10:24:44,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059450366] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:44,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:44,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:24:44,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811400109] [2022-07-12 10:24:44,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:44,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:24:44,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:44,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:24:44,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:24:44,848 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:24:44,849 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 201 transitions, 1327 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:44,849 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:44,849 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:24:44,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:46,149 INFO L129 PetriNetUnfolder]: 423/1689 cut-off events. [2022-07-12 10:24:46,150 INFO L130 PetriNetUnfolder]: For 10565/10565 co-relation queries the response was YES. [2022-07-12 10:24:46,165 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6911 conditions, 1689 events. 423/1689 cut-off events. For 10565/10565 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 11834 event pairs, 179 based on Foata normal form. 1/1612 useless extension candidates. Maximal degree in co-relation 6800. Up to 432 conditions per place. [2022-07-12 10:24:46,169 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 162 selfloop transitions, 36 changer transitions 74/357 dead transitions. [2022-07-12 10:24:46,169 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 357 transitions, 3252 flow [2022-07-12 10:24:46,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 10:24:46,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-12 10:24:46,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3690 transitions. [2022-07-12 10:24:46,172 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6059113300492611 [2022-07-12 10:24:46,172 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3690 transitions. [2022-07-12 10:24:46,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3690 transitions. [2022-07-12 10:24:46,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:46,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3690 transitions. [2022-07-12 10:24:46,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 105.42857142857143) internal successors, (3690), 35 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:46,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 174.0) internal successors, (6264), 36 states have internal predecessors, (6264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:46,178 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 174.0) internal successors, (6264), 36 states have internal predecessors, (6264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:46,178 INFO L186 Difference]: Start difference. First operand has 321 places, 201 transitions, 1327 flow. Second operand 35 states and 3690 transitions. [2022-07-12 10:24:46,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 357 transitions, 3252 flow [2022-07-12 10:24:46,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 357 transitions, 2898 flow, removed 155 selfloop flow, removed 30 redundant places. [2022-07-12 10:24:46,209 INFO L242 Difference]: Finished difference. Result has 326 places, 201 transitions, 1406 flow [2022-07-12 10:24:46,209 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1236, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1406, PETRI_PLACES=326, PETRI_TRANSITIONS=201} [2022-07-12 10:24:46,209 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 169 predicate places. [2022-07-12 10:24:46,209 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 201 transitions, 1406 flow [2022-07-12 10:24:46,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:46,210 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:46,210 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:46,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-07-12 10:24:46,210 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:46,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:46,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1886932905, now seen corresponding path program 11 times [2022-07-12 10:24:46,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:46,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170799906] [2022-07-12 10:24:46,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:46,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:46,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:46,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:46,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:46,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170799906] [2022-07-12 10:24:46,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170799906] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:46,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:46,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:24:46,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762941447] [2022-07-12 10:24:46,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:46,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:24:46,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:46,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:24:46,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:24:46,447 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:24:46,448 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 201 transitions, 1406 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:46,448 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:46,448 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:24:46,448 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:47,666 INFO L129 PetriNetUnfolder]: 449/1830 cut-off events. [2022-07-12 10:24:47,666 INFO L130 PetriNetUnfolder]: For 14939/14939 co-relation queries the response was YES. [2022-07-12 10:24:47,682 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7738 conditions, 1830 events. 449/1830 cut-off events. For 14939/14939 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 13159 event pairs, 186 based on Foata normal form. 1/1741 useless extension candidates. Maximal degree in co-relation 7625. Up to 432 conditions per place. [2022-07-12 10:24:47,687 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 180 selfloop transitions, 34 changer transitions 63/362 dead transitions. [2022-07-12 10:24:47,687 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 362 transitions, 3620 flow [2022-07-12 10:24:47,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-12 10:24:47,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-12 10:24:47,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3385 transitions. [2022-07-12 10:24:47,690 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6079382183908046 [2022-07-12 10:24:47,690 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3385 transitions. [2022-07-12 10:24:47,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3385 transitions. [2022-07-12 10:24:47,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:47,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3385 transitions. [2022-07-12 10:24:47,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 105.78125) internal successors, (3385), 32 states have internal predecessors, (3385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:47,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:47,696 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:47,696 INFO L186 Difference]: Start difference. First operand has 326 places, 201 transitions, 1406 flow. Second operand 32 states and 3385 transitions. [2022-07-12 10:24:47,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 362 transitions, 3620 flow [2022-07-12 10:24:47,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 362 transitions, 3236 flow, removed 135 selfloop flow, removed 34 redundant places. [2022-07-12 10:24:47,731 INFO L242 Difference]: Finished difference. Result has 321 places, 207 transitions, 1602 flow [2022-07-12 10:24:47,732 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1284, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1602, PETRI_PLACES=321, PETRI_TRANSITIONS=207} [2022-07-12 10:24:47,732 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 164 predicate places. [2022-07-12 10:24:47,732 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 207 transitions, 1602 flow [2022-07-12 10:24:47,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:47,732 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:47,733 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:47,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-07-12 10:24:47,733 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:47,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:47,733 INFO L85 PathProgramCache]: Analyzing trace with hash 230531765, now seen corresponding path program 12 times [2022-07-12 10:24:47,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:47,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996143727] [2022-07-12 10:24:47,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:47,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:47,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:47,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:47,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996143727] [2022-07-12 10:24:47,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996143727] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:47,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:47,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:24:47,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723875314] [2022-07-12 10:24:47,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:47,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:24:47,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:47,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:24:47,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:24:47,963 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:24:47,964 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 207 transitions, 1602 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:47,964 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:47,964 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:24:47,964 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:49,400 INFO L129 PetriNetUnfolder]: 542/2282 cut-off events. [2022-07-12 10:24:49,400 INFO L130 PetriNetUnfolder]: For 21847/21855 co-relation queries the response was YES. [2022-07-12 10:24:49,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10148 conditions, 2282 events. 542/2282 cut-off events. For 21847/21855 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 18177 event pairs, 240 based on Foata normal form. 2/2175 useless extension candidates. Maximal degree in co-relation 10038. Up to 432 conditions per place. [2022-07-12 10:24:49,422 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 191 selfloop transitions, 40 changer transitions 84/400 dead transitions. [2022-07-12 10:24:49,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 400 transitions, 4346 flow [2022-07-12 10:24:49,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-12 10:24:49,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-12 10:24:49,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3614 transitions. [2022-07-12 10:24:49,425 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6108857336037864 [2022-07-12 10:24:49,425 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3614 transitions. [2022-07-12 10:24:49,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3614 transitions. [2022-07-12 10:24:49,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:49,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3614 transitions. [2022-07-12 10:24:49,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 106.29411764705883) internal successors, (3614), 34 states have internal predecessors, (3614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:49,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 174.0) internal successors, (6090), 35 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:49,430 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 174.0) internal successors, (6090), 35 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:49,431 INFO L186 Difference]: Start difference. First operand has 321 places, 207 transitions, 1602 flow. Second operand 34 states and 3614 transitions. [2022-07-12 10:24:49,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 400 transitions, 4346 flow [2022-07-12 10:24:49,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 400 transitions, 3923 flow, removed 195 selfloop flow, removed 26 redundant places. [2022-07-12 10:24:49,480 INFO L242 Difference]: Finished difference. Result has 335 places, 213 transitions, 1838 flow [2022-07-12 10:24:49,481 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1523, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1838, PETRI_PLACES=335, PETRI_TRANSITIONS=213} [2022-07-12 10:24:49,481 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 178 predicate places. [2022-07-12 10:24:49,481 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 213 transitions, 1838 flow [2022-07-12 10:24:49,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:49,481 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:49,481 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:49,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-07-12 10:24:49,482 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:49,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:49,482 INFO L85 PathProgramCache]: Analyzing trace with hash 573426529, now seen corresponding path program 13 times [2022-07-12 10:24:49,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:49,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117627392] [2022-07-12 10:24:49,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:49,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:49,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:49,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:49,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117627392] [2022-07-12 10:24:49,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117627392] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:49,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:49,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:24:49,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072507490] [2022-07-12 10:24:49,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:49,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:24:49,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:49,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:24:49,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:24:49,700 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:24:49,701 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 213 transitions, 1838 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:49,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:49,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:24:49,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:50,957 INFO L129 PetriNetUnfolder]: 504/2181 cut-off events. [2022-07-12 10:24:50,957 INFO L130 PetriNetUnfolder]: For 21365/21371 co-relation queries the response was YES. [2022-07-12 10:24:50,980 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9628 conditions, 2181 events. 504/2181 cut-off events. For 21365/21371 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 16989 event pairs, 249 based on Foata normal form. 3/2081 useless extension candidates. Maximal degree in co-relation 9510. Up to 432 conditions per place. [2022-07-12 10:24:50,986 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 182 selfloop transitions, 39 changer transitions 73/379 dead transitions. [2022-07-12 10:24:50,986 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 379 transitions, 3986 flow [2022-07-12 10:24:50,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-12 10:24:50,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-12 10:24:50,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3599 transitions. [2022-07-12 10:24:50,988 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6083502366463827 [2022-07-12 10:24:50,988 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3599 transitions. [2022-07-12 10:24:50,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3599 transitions. [2022-07-12 10:24:50,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:50,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3599 transitions. [2022-07-12 10:24:50,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 105.8529411764706) internal successors, (3599), 34 states have internal predecessors, (3599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:50,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 174.0) internal successors, (6090), 35 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:50,994 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 174.0) internal successors, (6090), 35 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:50,994 INFO L186 Difference]: Start difference. First operand has 335 places, 213 transitions, 1838 flow. Second operand 34 states and 3599 transitions. [2022-07-12 10:24:50,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 379 transitions, 3986 flow [2022-07-12 10:24:51,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 379 transitions, 3637 flow, removed 150 selfloop flow, removed 28 redundant places. [2022-07-12 10:24:51,050 INFO L242 Difference]: Finished difference. Result has 342 places, 214 transitions, 1943 flow [2022-07-12 10:24:51,050 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1743, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1943, PETRI_PLACES=342, PETRI_TRANSITIONS=214} [2022-07-12 10:24:51,051 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 185 predicate places. [2022-07-12 10:24:51,051 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 214 transitions, 1943 flow [2022-07-12 10:24:51,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:51,051 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:51,051 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:51,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-07-12 10:24:51,052 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:51,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:51,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1327899901, now seen corresponding path program 14 times [2022-07-12 10:24:51,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:51,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828465313] [2022-07-12 10:24:51,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:51,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:51,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:51,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:51,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828465313] [2022-07-12 10:24:51,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828465313] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:51,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:51,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:24:51,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354115869] [2022-07-12 10:24:51,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:51,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:24:51,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:51,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:24:51,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:24:51,297 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:24:51,297 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 214 transitions, 1943 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:51,297 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:51,297 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:24:51,297 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:52,355 INFO L129 PetriNetUnfolder]: 529/2162 cut-off events. [2022-07-12 10:24:52,356 INFO L130 PetriNetUnfolder]: For 24316/24327 co-relation queries the response was YES. [2022-07-12 10:24:52,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10075 conditions, 2162 events. 529/2162 cut-off events. For 24316/24327 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 16793 event pairs, 264 based on Foata normal form. 4/2047 useless extension candidates. Maximal degree in co-relation 9954. Up to 432 conditions per place. [2022-07-12 10:24:52,383 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 188 selfloop transitions, 42 changer transitions 77/392 dead transitions. [2022-07-12 10:24:52,383 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 392 transitions, 4537 flow [2022-07-12 10:24:52,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-12 10:24:52,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-12 10:24:52,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3507 transitions. [2022-07-12 10:24:52,385 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6107628004179728 [2022-07-12 10:24:52,385 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3507 transitions. [2022-07-12 10:24:52,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3507 transitions. [2022-07-12 10:24:52,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:52,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3507 transitions. [2022-07-12 10:24:52,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 106.27272727272727) internal successors, (3507), 33 states have internal predecessors, (3507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:52,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:52,391 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:52,391 INFO L186 Difference]: Start difference. First operand has 342 places, 214 transitions, 1943 flow. Second operand 33 states and 3507 transitions. [2022-07-12 10:24:52,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 392 transitions, 4537 flow [2022-07-12 10:24:52,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 392 transitions, 3880 flow, removed 171 selfloop flow, removed 35 redundant places. [2022-07-12 10:24:52,441 INFO L242 Difference]: Finished difference. Result has 339 places, 215 transitions, 1856 flow [2022-07-12 10:24:52,442 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1688, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1856, PETRI_PLACES=339, PETRI_TRANSITIONS=215} [2022-07-12 10:24:52,442 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 182 predicate places. [2022-07-12 10:24:52,442 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 215 transitions, 1856 flow [2022-07-12 10:24:52,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:52,442 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:52,443 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:52,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-07-12 10:24:52,443 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:52,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:52,443 INFO L85 PathProgramCache]: Analyzing trace with hash -530843921, now seen corresponding path program 15 times [2022-07-12 10:24:52,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:52,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056972583] [2022-07-12 10:24:52,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:52,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:52,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:52,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:52,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056972583] [2022-07-12 10:24:52,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056972583] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:52,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:52,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:24:52,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266236991] [2022-07-12 10:24:52,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:52,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:24:52,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:52,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:24:52,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:24:52,602 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:24:52,603 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 215 transitions, 1856 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:52,603 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:52,603 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:24:52,603 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:53,619 INFO L129 PetriNetUnfolder]: 499/2095 cut-off events. [2022-07-12 10:24:53,619 INFO L130 PetriNetUnfolder]: For 18900/18913 co-relation queries the response was YES. [2022-07-12 10:24:53,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9511 conditions, 2095 events. 499/2095 cut-off events. For 18900/18913 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 16185 event pairs, 228 based on Foata normal form. 5/2005 useless extension candidates. Maximal degree in co-relation 9394. Up to 432 conditions per place. [2022-07-12 10:24:53,646 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 181 selfloop transitions, 43 changer transitions 72/381 dead transitions. [2022-07-12 10:24:53,646 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 381 transitions, 4259 flow [2022-07-12 10:24:53,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-12 10:24:53,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-12 10:24:53,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3398 transitions. [2022-07-12 10:24:53,649 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6102729885057471 [2022-07-12 10:24:53,649 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3398 transitions. [2022-07-12 10:24:53,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3398 transitions. [2022-07-12 10:24:53,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:53,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3398 transitions. [2022-07-12 10:24:53,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 106.1875) internal successors, (3398), 32 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:53,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:53,719 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:53,719 INFO L186 Difference]: Start difference. First operand has 339 places, 215 transitions, 1856 flow. Second operand 32 states and 3398 transitions. [2022-07-12 10:24:53,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 381 transitions, 4259 flow [2022-07-12 10:24:53,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 381 transitions, 3785 flow, removed 155 selfloop flow, removed 31 redundant places. [2022-07-12 10:24:53,759 INFO L242 Difference]: Finished difference. Result has 339 places, 216 transitions, 1870 flow [2022-07-12 10:24:53,760 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1706, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1870, PETRI_PLACES=339, PETRI_TRANSITIONS=216} [2022-07-12 10:24:53,760 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 182 predicate places. [2022-07-12 10:24:53,760 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 216 transitions, 1870 flow [2022-07-12 10:24:53,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:53,761 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:53,761 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:53,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-07-12 10:24:53,761 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:53,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:53,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1247392525, now seen corresponding path program 16 times [2022-07-12 10:24:53,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:53,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571592932] [2022-07-12 10:24:53,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:53,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:53,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:53,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:53,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571592932] [2022-07-12 10:24:53,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571592932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:53,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:53,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:24:53,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693426862] [2022-07-12 10:24:53,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:53,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:24:53,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:53,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:24:53,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:24:53,922 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:24:53,923 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 216 transitions, 1870 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:53,923 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:53,923 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:24:53,923 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:54,707 INFO L129 PetriNetUnfolder]: 475/1998 cut-off events. [2022-07-12 10:24:54,707 INFO L130 PetriNetUnfolder]: For 17746/17759 co-relation queries the response was YES. [2022-07-12 10:24:54,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8945 conditions, 1998 events. 475/1998 cut-off events. For 17746/17759 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 14911 event pairs, 248 based on Foata normal form. 4/1887 useless extension candidates. Maximal degree in co-relation 8829. Up to 432 conditions per place. [2022-07-12 10:24:54,734 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 156 selfloop transitions, 68 changer transitions 42/351 dead transitions. [2022-07-12 10:24:54,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 351 transitions, 4335 flow [2022-07-12 10:24:54,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:24:54,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:24:54,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2555 transitions. [2022-07-12 10:24:54,736 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6118295019157088 [2022-07-12 10:24:54,736 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2555 transitions. [2022-07-12 10:24:54,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2555 transitions. [2022-07-12 10:24:54,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:54,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2555 transitions. [2022-07-12 10:24:54,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 106.45833333333333) internal successors, (2555), 24 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:54,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:54,740 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:54,741 INFO L186 Difference]: Start difference. First operand has 339 places, 216 transitions, 1870 flow. Second operand 24 states and 2555 transitions. [2022-07-12 10:24:54,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 351 transitions, 4335 flow [2022-07-12 10:24:54,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 351 transitions, 3871 flow, removed 113 selfloop flow, removed 30 redundant places. [2022-07-12 10:24:54,785 INFO L242 Difference]: Finished difference. Result has 326 places, 245 transitions, 2567 flow [2022-07-12 10:24:54,785 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2567, PETRI_PLACES=326, PETRI_TRANSITIONS=245} [2022-07-12 10:24:54,785 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 169 predicate places. [2022-07-12 10:24:54,786 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 245 transitions, 2567 flow [2022-07-12 10:24:54,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:54,786 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:54,786 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:54,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-07-12 10:24:54,786 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:54,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:54,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1564357863, now seen corresponding path program 17 times [2022-07-12 10:24:54,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:54,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676670413] [2022-07-12 10:24:54,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:54,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:54,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:54,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:54,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676670413] [2022-07-12 10:24:54,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676670413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:54,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:54,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:24:54,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745798307] [2022-07-12 10:24:54,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:54,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:24:54,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:54,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:24:54,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:24:54,930 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:24:54,931 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 245 transitions, 2567 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:54,931 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:54,931 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:24:54,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:55,877 INFO L129 PetriNetUnfolder]: 485/2002 cut-off events. [2022-07-12 10:24:55,877 INFO L130 PetriNetUnfolder]: For 17072/17085 co-relation queries the response was YES. [2022-07-12 10:24:55,895 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9219 conditions, 2002 events. 485/2002 cut-off events. For 17072/17085 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 15020 event pairs, 243 based on Foata normal form. 4/1902 useless extension candidates. Maximal degree in co-relation 9110. Up to 432 conditions per place. [2022-07-12 10:24:55,901 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 180 selfloop transitions, 60 changer transitions 63/388 dead transitions. [2022-07-12 10:24:55,901 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 388 transitions, 4635 flow [2022-07-12 10:24:55,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-12 10:24:55,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-12 10:24:55,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3288 transitions. [2022-07-12 10:24:55,904 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6095661846496107 [2022-07-12 10:24:55,904 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3288 transitions. [2022-07-12 10:24:55,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3288 transitions. [2022-07-12 10:24:55,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:55,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3288 transitions. [2022-07-12 10:24:55,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 106.06451612903226) internal successors, (3288), 31 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:55,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:55,909 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:55,910 INFO L186 Difference]: Start difference. First operand has 326 places, 245 transitions, 2567 flow. Second operand 31 states and 3288 transitions. [2022-07-12 10:24:55,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 388 transitions, 4635 flow [2022-07-12 10:24:55,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 388 transitions, 3801 flow, removed 345 selfloop flow, removed 15 redundant places. [2022-07-12 10:24:55,962 INFO L242 Difference]: Finished difference. Result has 353 places, 243 transitions, 2285 flow [2022-07-12 10:24:55,962 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2117, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2285, PETRI_PLACES=353, PETRI_TRANSITIONS=243} [2022-07-12 10:24:55,963 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 196 predicate places. [2022-07-12 10:24:55,963 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 243 transitions, 2285 flow [2022-07-12 10:24:55,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:55,963 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:55,963 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:55,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-07-12 10:24:55,964 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:55,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:55,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1449984001, now seen corresponding path program 18 times [2022-07-12 10:24:55,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:55,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348548576] [2022-07-12 10:24:55,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:55,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:56,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:56,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:56,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348548576] [2022-07-12 10:24:56,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348548576] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:56,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:56,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:24:56,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488136089] [2022-07-12 10:24:56,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:56,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:24:56,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:56,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:24:56,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:24:56,144 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:24:56,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 243 transitions, 2285 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:56,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:56,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:24:56,145 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:57,103 INFO L129 PetriNetUnfolder]: 467/1979 cut-off events. [2022-07-12 10:24:57,104 INFO L130 PetriNetUnfolder]: For 15745/15755 co-relation queries the response was YES. [2022-07-12 10:24:57,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8710 conditions, 1979 events. 467/1979 cut-off events. For 15745/15755 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 14730 event pairs, 217 based on Foata normal form. 5/1894 useless extension candidates. Maximal degree in co-relation 8589. Up to 432 conditions per place. [2022-07-12 10:24:57,131 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 161 selfloop transitions, 62 changer transitions 58/366 dead transitions. [2022-07-12 10:24:57,131 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 366 transitions, 4010 flow [2022-07-12 10:24:57,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:24:57,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-12 10:24:57,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3169 transitions. [2022-07-12 10:24:57,133 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6070881226053639 [2022-07-12 10:24:57,133 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3169 transitions. [2022-07-12 10:24:57,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3169 transitions. [2022-07-12 10:24:57,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:57,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3169 transitions. [2022-07-12 10:24:57,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 105.63333333333334) internal successors, (3169), 30 states have internal predecessors, (3169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:57,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:57,139 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:57,139 INFO L186 Difference]: Start difference. First operand has 353 places, 243 transitions, 2285 flow. Second operand 30 states and 3169 transitions. [2022-07-12 10:24:57,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 366 transitions, 4010 flow [2022-07-12 10:24:57,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 366 transitions, 3656 flow, removed 74 selfloop flow, removed 30 redundant places. [2022-07-12 10:24:57,191 INFO L242 Difference]: Finished difference. Result has 351 places, 245 transitions, 2314 flow [2022-07-12 10:24:57,191 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2091, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2314, PETRI_PLACES=351, PETRI_TRANSITIONS=245} [2022-07-12 10:24:57,191 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 194 predicate places. [2022-07-12 10:24:57,191 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 245 transitions, 2314 flow [2022-07-12 10:24:57,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:57,192 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:57,192 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:57,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-07-12 10:24:57,192 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:57,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:57,193 INFO L85 PathProgramCache]: Analyzing trace with hash 31822443, now seen corresponding path program 19 times [2022-07-12 10:24:57,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:57,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382115466] [2022-07-12 10:24:57,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:57,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:57,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:57,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:57,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382115466] [2022-07-12 10:24:57,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382115466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:57,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:57,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:24:57,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246527250] [2022-07-12 10:24:57,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:57,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:24:57,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:57,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:24:57,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:24:57,422 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:24:57,423 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 245 transitions, 2314 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:57,423 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:57,423 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:24:57,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:58,490 INFO L129 PetriNetUnfolder]: 459/1932 cut-off events. [2022-07-12 10:24:58,490 INFO L130 PetriNetUnfolder]: For 15451/15462 co-relation queries the response was YES. [2022-07-12 10:24:58,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8608 conditions, 1932 events. 459/1932 cut-off events. For 15451/15462 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 14262 event pairs, 231 based on Foata normal form. 4/1840 useless extension candidates. Maximal degree in co-relation 8489. Up to 432 conditions per place. [2022-07-12 10:24:58,508 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 153 selfloop transitions, 67 changer transitions 46/351 dead transitions. [2022-07-12 10:24:58,508 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 351 transitions, 3900 flow [2022-07-12 10:24:58,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-12 10:24:58,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-12 10:24:58,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2756 transitions. [2022-07-12 10:24:58,510 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6091954022988506 [2022-07-12 10:24:58,510 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2756 transitions. [2022-07-12 10:24:58,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2756 transitions. [2022-07-12 10:24:58,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:58,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2756 transitions. [2022-07-12 10:24:58,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 106.0) internal successors, (2756), 26 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:58,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:58,514 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:58,515 INFO L186 Difference]: Start difference. First operand has 351 places, 245 transitions, 2314 flow. Second operand 26 states and 2756 transitions. [2022-07-12 10:24:58,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 351 transitions, 3900 flow [2022-07-12 10:24:58,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 351 transitions, 3712 flow, removed 53 selfloop flow, removed 24 redundant places. [2022-07-12 10:24:58,557 INFO L242 Difference]: Finished difference. Result has 345 places, 251 transitions, 2493 flow [2022-07-12 10:24:58,557 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2196, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2493, PETRI_PLACES=345, PETRI_TRANSITIONS=251} [2022-07-12 10:24:58,557 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 188 predicate places. [2022-07-12 10:24:58,558 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 251 transitions, 2493 flow [2022-07-12 10:24:58,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:58,558 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:58,558 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:58,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-07-12 10:24:58,558 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:58,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:58,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1524091547, now seen corresponding path program 20 times [2022-07-12 10:24:58,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:58,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753113771] [2022-07-12 10:24:58,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:58,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:58,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:58,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:58,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753113771] [2022-07-12 10:24:58,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753113771] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:58,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:58,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:24:58,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246370929] [2022-07-12 10:24:58,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:58,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:24:58,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:58,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:24:58,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:24:58,747 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:24:58,748 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 251 transitions, 2493 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:58,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:58,748 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:24:58,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:59,686 INFO L129 PetriNetUnfolder]: 433/1845 cut-off events. [2022-07-12 10:24:59,686 INFO L130 PetriNetUnfolder]: For 14721/14732 co-relation queries the response was YES. [2022-07-12 10:24:59,703 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8105 conditions, 1845 events. 433/1845 cut-off events. For 14721/14732 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 13340 event pairs, 222 based on Foata normal form. 4/1762 useless extension candidates. Maximal degree in co-relation 7991. Up to 432 conditions per place. [2022-07-12 10:24:59,709 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 152 selfloop transitions, 57 changer transitions 52/346 dead transitions. [2022-07-12 10:24:59,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 346 transitions, 3787 flow [2022-07-12 10:24:59,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 10:24:59,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-12 10:24:59,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2958 transitions. [2022-07-12 10:24:59,712 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2022-07-12 10:24:59,713 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2958 transitions. [2022-07-12 10:24:59,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2958 transitions. [2022-07-12 10:24:59,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:59,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2958 transitions. [2022-07-12 10:24:59,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 105.64285714285714) internal successors, (2958), 28 states have internal predecessors, (2958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:59,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:59,718 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:59,718 INFO L186 Difference]: Start difference. First operand has 345 places, 251 transitions, 2493 flow. Second operand 28 states and 2958 transitions. [2022-07-12 10:24:59,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 346 transitions, 3787 flow [2022-07-12 10:24:59,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 346 transitions, 3537 flow, removed 42 selfloop flow, removed 19 redundant places. [2022-07-12 10:24:59,765 INFO L242 Difference]: Finished difference. Result has 356 places, 243 transitions, 2271 flow [2022-07-12 10:24:59,765 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2311, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2271, PETRI_PLACES=356, PETRI_TRANSITIONS=243} [2022-07-12 10:24:59,765 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 199 predicate places. [2022-07-12 10:24:59,765 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 243 transitions, 2271 flow [2022-07-12 10:24:59,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:59,766 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:59,766 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:59,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-07-12 10:24:59,766 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:59,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:59,767 INFO L85 PathProgramCache]: Analyzing trace with hash 362925875, now seen corresponding path program 21 times [2022-07-12 10:24:59,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:59,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030082233] [2022-07-12 10:24:59,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:59,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:59,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:59,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:59,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030082233] [2022-07-12 10:24:59,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030082233] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:59,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:59,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:24:59,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336015921] [2022-07-12 10:24:59,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:59,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:24:59,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:59,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:24:59,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:25:00,000 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:25:00,000 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 243 transitions, 2271 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:00,000 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:00,000 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:25:00,000 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:01,152 INFO L129 PetriNetUnfolder]: 391/1627 cut-off events. [2022-07-12 10:25:01,152 INFO L130 PetriNetUnfolder]: For 13138/13142 co-relation queries the response was YES. [2022-07-12 10:25:01,168 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7068 conditions, 1627 events. 391/1627 cut-off events. For 13138/13142 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 11154 event pairs, 207 based on Foata normal form. 3/1546 useless extension candidates. Maximal degree in co-relation 6948. Up to 432 conditions per place. [2022-07-12 10:25:01,172 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 131 selfloop transitions, 29 changer transitions 61/306 dead transitions. [2022-07-12 10:25:01,172 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 306 transitions, 3066 flow [2022-07-12 10:25:01,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-12 10:25:01,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-12 10:25:01,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2739 transitions. [2022-07-12 10:25:01,174 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6054376657824934 [2022-07-12 10:25:01,174 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2739 transitions. [2022-07-12 10:25:01,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2739 transitions. [2022-07-12 10:25:01,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:01,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2739 transitions. [2022-07-12 10:25:01,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 105.34615384615384) internal successors, (2739), 26 states have internal predecessors, (2739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:01,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:01,179 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:01,179 INFO L186 Difference]: Start difference. First operand has 356 places, 243 transitions, 2271 flow. Second operand 26 states and 2739 transitions. [2022-07-12 10:25:01,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 306 transitions, 3066 flow [2022-07-12 10:25:01,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 306 transitions, 2883 flow, removed 44 selfloop flow, removed 22 redundant places. [2022-07-12 10:25:01,219 INFO L242 Difference]: Finished difference. Result has 348 places, 201 transitions, 1533 flow [2022-07-12 10:25:01,219 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1533, PETRI_PLACES=348, PETRI_TRANSITIONS=201} [2022-07-12 10:25:01,220 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 191 predicate places. [2022-07-12 10:25:01,220 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 201 transitions, 1533 flow [2022-07-12 10:25:01,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:01,220 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:01,220 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:01,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-07-12 10:25:01,221 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:01,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:01,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1782701479, now seen corresponding path program 22 times [2022-07-12 10:25:01,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:01,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659575641] [2022-07-12 10:25:01,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:01,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:01,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:01,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:01,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659575641] [2022-07-12 10:25:01,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659575641] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:01,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:01,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:25:01,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398130641] [2022-07-12 10:25:01,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:01,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:25:01,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:01,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:25:01,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:25:01,413 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:25:01,414 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 201 transitions, 1533 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:01,414 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:01,414 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:25:01,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:02,827 INFO L129 PetriNetUnfolder]: 438/1849 cut-off events. [2022-07-12 10:25:02,827 INFO L130 PetriNetUnfolder]: For 15431/15438 co-relation queries the response was YES. [2022-07-12 10:25:02,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7948 conditions, 1849 events. 438/1849 cut-off events. For 15431/15438 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 13540 event pairs, 208 based on Foata normal form. 3/1770 useless extension candidates. Maximal degree in co-relation 7837. Up to 432 conditions per place. [2022-07-12 10:25:02,850 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 170 selfloop transitions, 39 changer transitions 65/359 dead transitions. [2022-07-12 10:25:02,850 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 359 transitions, 3604 flow [2022-07-12 10:25:02,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-12 10:25:02,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-12 10:25:02,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3487 transitions. [2022-07-12 10:25:02,852 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.60727969348659 [2022-07-12 10:25:02,852 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3487 transitions. [2022-07-12 10:25:02,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3487 transitions. [2022-07-12 10:25:02,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:02,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3487 transitions. [2022-07-12 10:25:02,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 105.66666666666667) internal successors, (3487), 33 states have internal predecessors, (3487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:02,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:02,858 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:02,858 INFO L186 Difference]: Start difference. First operand has 348 places, 201 transitions, 1533 flow. Second operand 33 states and 3487 transitions. [2022-07-12 10:25:02,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 359 transitions, 3604 flow [2022-07-12 10:25:02,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 359 transitions, 3118 flow, removed 111 selfloop flow, removed 27 redundant places. [2022-07-12 10:25:02,895 INFO L242 Difference]: Finished difference. Result has 332 places, 207 transitions, 1666 flow [2022-07-12 10:25:02,895 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1666, PETRI_PLACES=332, PETRI_TRANSITIONS=207} [2022-07-12 10:25:02,896 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 175 predicate places. [2022-07-12 10:25:02,896 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 207 transitions, 1666 flow [2022-07-12 10:25:02,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:02,896 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:02,896 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:02,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-07-12 10:25:02,897 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:02,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:02,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1855099201, now seen corresponding path program 23 times [2022-07-12 10:25:02,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:02,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044621641] [2022-07-12 10:25:02,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:02,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:03,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:03,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:03,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044621641] [2022-07-12 10:25:03,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044621641] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:03,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:03,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:25:03,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3338662] [2022-07-12 10:25:03,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:03,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:25:03,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:03,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:25:03,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:25:03,097 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:25:03,098 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 207 transitions, 1666 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:03,098 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:03,098 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:25:03,098 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:04,240 INFO L129 PetriNetUnfolder]: 451/1849 cut-off events. [2022-07-12 10:25:04,240 INFO L130 PetriNetUnfolder]: For 17790/17794 co-relation queries the response was YES. [2022-07-12 10:25:04,255 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8455 conditions, 1849 events. 451/1849 cut-off events. For 17790/17794 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 13556 event pairs, 240 based on Foata normal form. 2/1750 useless extension candidates. Maximal degree in co-relation 8336. Up to 432 conditions per place. [2022-07-12 10:25:04,260 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 176 selfloop transitions, 44 changer transitions 52/357 dead transitions. [2022-07-12 10:25:04,260 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 357 transitions, 3850 flow [2022-07-12 10:25:04,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-12 10:25:04,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-12 10:25:04,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3287 transitions. [2022-07-12 10:25:04,262 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6093807934742306 [2022-07-12 10:25:04,263 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3287 transitions. [2022-07-12 10:25:04,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3287 transitions. [2022-07-12 10:25:04,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:04,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3287 transitions. [2022-07-12 10:25:04,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 106.03225806451613) internal successors, (3287), 31 states have internal predecessors, (3287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:04,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:04,268 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:04,268 INFO L186 Difference]: Start difference. First operand has 332 places, 207 transitions, 1666 flow. Second operand 31 states and 3287 transitions. [2022-07-12 10:25:04,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 357 transitions, 3850 flow [2022-07-12 10:25:04,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 357 transitions, 3382 flow, removed 226 selfloop flow, removed 28 redundant places. [2022-07-12 10:25:04,305 INFO L242 Difference]: Finished difference. Result has 335 places, 216 transitions, 1953 flow [2022-07-12 10:25:04,306 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1579, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1953, PETRI_PLACES=335, PETRI_TRANSITIONS=216} [2022-07-12 10:25:04,306 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 178 predicate places. [2022-07-12 10:25:04,306 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 216 transitions, 1953 flow [2022-07-12 10:25:04,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:04,307 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:04,307 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:04,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-07-12 10:25:04,307 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:04,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:04,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1287307459, now seen corresponding path program 24 times [2022-07-12 10:25:04,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:04,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211332901] [2022-07-12 10:25:04,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:04,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:04,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:04,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:04,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211332901] [2022-07-12 10:25:04,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211332901] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:04,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:04,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:25:04,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124463589] [2022-07-12 10:25:04,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:04,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:25:04,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:04,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:25:04,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:25:04,521 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:25:04,522 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 216 transitions, 1953 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:04,522 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:04,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:25:04,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:05,524 INFO L129 PetriNetUnfolder]: 452/1875 cut-off events. [2022-07-12 10:25:05,524 INFO L130 PetriNetUnfolder]: For 16948/16957 co-relation queries the response was YES. [2022-07-12 10:25:05,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8528 conditions, 1875 events. 452/1875 cut-off events. For 16948/16957 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 13872 event pairs, 227 based on Foata normal form. 3/1779 useless extension candidates. Maximal degree in co-relation 8408. Up to 432 conditions per place. [2022-07-12 10:25:05,549 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 183 selfloop transitions, 42 changer transitions 64/374 dead transitions. [2022-07-12 10:25:05,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 374 transitions, 4005 flow [2022-07-12 10:25:05,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-12 10:25:05,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-12 10:25:05,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3500 transitions. [2022-07-12 10:25:05,552 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6095437129919888 [2022-07-12 10:25:05,552 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3500 transitions. [2022-07-12 10:25:05,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3500 transitions. [2022-07-12 10:25:05,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:05,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3500 transitions. [2022-07-12 10:25:05,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 106.06060606060606) internal successors, (3500), 33 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:05,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:05,558 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:05,558 INFO L186 Difference]: Start difference. First operand has 335 places, 216 transitions, 1953 flow. Second operand 33 states and 3500 transitions. [2022-07-12 10:25:05,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 374 transitions, 4005 flow [2022-07-12 10:25:05,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 374 transitions, 3524 flow, removed 196 selfloop flow, removed 24 redundant places. [2022-07-12 10:25:05,602 INFO L242 Difference]: Finished difference. Result has 348 places, 215 transitions, 1905 flow [2022-07-12 10:25:05,602 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1770, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1905, PETRI_PLACES=348, PETRI_TRANSITIONS=215} [2022-07-12 10:25:05,602 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 191 predicate places. [2022-07-12 10:25:05,602 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 215 transitions, 1905 flow [2022-07-12 10:25:05,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:05,603 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:05,603 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:05,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-07-12 10:25:05,603 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:05,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:05,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1597305123, now seen corresponding path program 25 times [2022-07-12 10:25:05,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:05,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177862980] [2022-07-12 10:25:05,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:05,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:05,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:05,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:05,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177862980] [2022-07-12 10:25:05,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177862980] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:05,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:05,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:25:05,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746609329] [2022-07-12 10:25:05,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:05,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:25:05,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:05,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:25:05,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:25:05,791 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:25:05,791 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 215 transitions, 1905 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:05,791 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:05,791 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:25:05,791 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:06,932 INFO L129 PetriNetUnfolder]: 416/1694 cut-off events. [2022-07-12 10:25:06,932 INFO L130 PetriNetUnfolder]: For 14928/14939 co-relation queries the response was YES. [2022-07-12 10:25:06,948 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7688 conditions, 1694 events. 416/1694 cut-off events. For 14928/14939 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 11950 event pairs, 208 based on Foata normal form. 4/1614 useless extension candidates. Maximal degree in co-relation 7563. Up to 432 conditions per place. [2022-07-12 10:25:06,953 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 174 selfloop transitions, 38 changer transitions 61/358 dead transitions. [2022-07-12 10:25:06,953 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 358 transitions, 3717 flow [2022-07-12 10:25:06,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-12 10:25:06,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-12 10:25:06,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3390 transitions. [2022-07-12 10:25:06,955 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6088362068965517 [2022-07-12 10:25:06,956 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3390 transitions. [2022-07-12 10:25:06,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3390 transitions. [2022-07-12 10:25:06,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:06,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3390 transitions. [2022-07-12 10:25:06,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 105.9375) internal successors, (3390), 32 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:06,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:06,961 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:06,961 INFO L186 Difference]: Start difference. First operand has 348 places, 215 transitions, 1905 flow. Second operand 32 states and 3390 transitions. [2022-07-12 10:25:06,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 358 transitions, 3717 flow [2022-07-12 10:25:06,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 358 transitions, 3229 flow, removed 146 selfloop flow, removed 33 redundant places. [2022-07-12 10:25:07,001 INFO L242 Difference]: Finished difference. Result has 345 places, 210 transitions, 1703 flow [2022-07-12 10:25:07,001 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1677, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1703, PETRI_PLACES=345, PETRI_TRANSITIONS=210} [2022-07-12 10:25:07,002 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 188 predicate places. [2022-07-12 10:25:07,002 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 210 transitions, 1703 flow [2022-07-12 10:25:07,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:07,002 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:07,002 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:07,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-07-12 10:25:07,003 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:07,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:07,003 INFO L85 PathProgramCache]: Analyzing trace with hash 607871383, now seen corresponding path program 26 times [2022-07-12 10:25:07,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:07,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361133490] [2022-07-12 10:25:07,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:07,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:07,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:07,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:07,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361133490] [2022-07-12 10:25:07,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361133490] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:07,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:07,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:25:07,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661193171] [2022-07-12 10:25:07,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:07,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:25:07,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:07,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:25:07,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:25:07,143 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:25:07,144 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 210 transitions, 1703 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:07,144 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:07,144 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:25:07,144 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:07,896 INFO L129 PetriNetUnfolder]: 398/1604 cut-off events. [2022-07-12 10:25:07,896 INFO L130 PetriNetUnfolder]: For 12933/12938 co-relation queries the response was YES. [2022-07-12 10:25:07,911 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7169 conditions, 1604 events. 398/1604 cut-off events. For 12933/12938 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 11012 event pairs, 224 based on Foata normal form. 1/1516 useless extension candidates. Maximal degree in co-relation 7047. Up to 432 conditions per place. [2022-07-12 10:25:07,915 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 142 selfloop transitions, 55 changer transitions 33/315 dead transitions. [2022-07-12 10:25:07,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 315 transitions, 3388 flow [2022-07-12 10:25:07,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:25:07,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:25:07,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2548 transitions. [2022-07-12 10:25:07,917 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6101532567049809 [2022-07-12 10:25:07,917 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2548 transitions. [2022-07-12 10:25:07,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2548 transitions. [2022-07-12 10:25:07,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:07,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2548 transitions. [2022-07-12 10:25:07,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 106.16666666666667) internal successors, (2548), 24 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:07,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:07,922 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:07,922 INFO L186 Difference]: Start difference. First operand has 345 places, 210 transitions, 1703 flow. Second operand 24 states and 2548 transitions. [2022-07-12 10:25:07,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 315 transitions, 3388 flow [2022-07-12 10:25:07,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 315 transitions, 2979 flow, removed 93 selfloop flow, removed 35 redundant places. [2022-07-12 10:25:07,956 INFO L242 Difference]: Finished difference. Result has 326 places, 228 transitions, 2057 flow [2022-07-12 10:25:07,956 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1558, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2057, PETRI_PLACES=326, PETRI_TRANSITIONS=228} [2022-07-12 10:25:07,956 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 169 predicate places. [2022-07-12 10:25:07,957 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 228 transitions, 2057 flow [2022-07-12 10:25:07,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:07,957 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:07,957 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:07,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-07-12 10:25:07,957 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:07,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:07,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1143784635, now seen corresponding path program 27 times [2022-07-12 10:25:07,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:07,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071202166] [2022-07-12 10:25:07,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:07,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:08,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:08,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:08,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071202166] [2022-07-12 10:25:08,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071202166] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:08,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:08,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:25:08,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249661432] [2022-07-12 10:25:08,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:08,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:25:08,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:08,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:25:08,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:25:08,249 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:25:08,250 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 228 transitions, 2057 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:08,250 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:08,250 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:25:08,250 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:09,284 INFO L129 PetriNetUnfolder]: 403/1629 cut-off events. [2022-07-12 10:25:09,285 INFO L130 PetriNetUnfolder]: For 12445/12450 co-relation queries the response was YES. [2022-07-12 10:25:09,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7256 conditions, 1629 events. 403/1629 cut-off events. For 12445/12450 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 11202 event pairs, 209 based on Foata normal form. 1/1545 useless extension candidates. Maximal degree in co-relation 7144. Up to 432 conditions per place. [2022-07-12 10:25:09,303 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 155 selfloop transitions, 50 changer transitions 48/338 dead transitions. [2022-07-12 10:25:09,303 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 338 transitions, 3597 flow [2022-07-12 10:25:09,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:25:09,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-12 10:25:09,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3164 transitions. [2022-07-12 10:25:09,305 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6061302681992338 [2022-07-12 10:25:09,305 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3164 transitions. [2022-07-12 10:25:09,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3164 transitions. [2022-07-12 10:25:09,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:09,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3164 transitions. [2022-07-12 10:25:09,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 105.46666666666667) internal successors, (3164), 30 states have internal predecessors, (3164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:09,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:09,311 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:09,311 INFO L186 Difference]: Start difference. First operand has 326 places, 228 transitions, 2057 flow. Second operand 30 states and 3164 transitions. [2022-07-12 10:25:09,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 338 transitions, 3597 flow [2022-07-12 10:25:09,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 338 transitions, 3072 flow, removed 211 selfloop flow, removed 16 redundant places. [2022-07-12 10:25:09,352 INFO L242 Difference]: Finished difference. Result has 349 places, 230 transitions, 1957 flow [2022-07-12 10:25:09,352 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1774, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1957, PETRI_PLACES=349, PETRI_TRANSITIONS=230} [2022-07-12 10:25:09,352 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 192 predicate places. [2022-07-12 10:25:09,352 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 230 transitions, 1957 flow [2022-07-12 10:25:09,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:09,353 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:09,353 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:09,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-07-12 10:25:09,353 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:09,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:09,354 INFO L85 PathProgramCache]: Analyzing trace with hash -376384443, now seen corresponding path program 28 times [2022-07-12 10:25:09,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:09,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63219091] [2022-07-12 10:25:09,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:09,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:09,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:09,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:09,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63219091] [2022-07-12 10:25:09,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63219091] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:09,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:09,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:25:09,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269038316] [2022-07-12 10:25:09,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:09,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:25:09,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:09,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:25:09,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:25:09,572 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:25:09,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 230 transitions, 1957 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:09,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:09,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:25:09,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:10,610 INFO L129 PetriNetUnfolder]: 399/1597 cut-off events. [2022-07-12 10:25:10,610 INFO L130 PetriNetUnfolder]: For 12230/12234 co-relation queries the response was YES. [2022-07-12 10:25:10,626 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7098 conditions, 1597 events. 399/1597 cut-off events. For 12230/12234 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 10902 event pairs, 220 based on Foata normal form. 2/1511 useless extension candidates. Maximal degree in co-relation 6976. Up to 432 conditions per place. [2022-07-12 10:25:10,631 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 144 selfloop transitions, 55 changer transitions 37/321 dead transitions. [2022-07-12 10:25:10,631 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 321 transitions, 3195 flow [2022-07-12 10:25:10,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-12 10:25:10,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-12 10:25:10,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2751 transitions. [2022-07-12 10:25:10,633 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6080901856763926 [2022-07-12 10:25:10,633 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2751 transitions. [2022-07-12 10:25:10,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2751 transitions. [2022-07-12 10:25:10,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:10,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2751 transitions. [2022-07-12 10:25:10,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 105.8076923076923) internal successors, (2751), 26 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:10,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:10,638 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:10,638 INFO L186 Difference]: Start difference. First operand has 349 places, 230 transitions, 1957 flow. Second operand 26 states and 2751 transitions. [2022-07-12 10:25:10,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 321 transitions, 3195 flow [2022-07-12 10:25:10,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 321 transitions, 3003 flow, removed 57 selfloop flow, removed 24 redundant places. [2022-07-12 10:25:10,679 INFO L242 Difference]: Finished difference. Result has 343 places, 234 transitions, 2049 flow [2022-07-12 10:25:10,679 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1837, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2049, PETRI_PLACES=343, PETRI_TRANSITIONS=234} [2022-07-12 10:25:10,679 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 186 predicate places. [2022-07-12 10:25:10,680 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 234 transitions, 2049 flow [2022-07-12 10:25:10,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:10,680 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:10,681 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:10,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-07-12 10:25:10,681 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:10,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:10,681 INFO L85 PathProgramCache]: Analyzing trace with hash 991564081, now seen corresponding path program 29 times [2022-07-12 10:25:10,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:10,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387798738] [2022-07-12 10:25:10,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:10,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:10,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:10,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:10,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387798738] [2022-07-12 10:25:10,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387798738] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:10,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:10,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:25:10,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622570968] [2022-07-12 10:25:10,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:10,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:25:10,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:10,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:25:10,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:25:10,896 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:25:10,897 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 234 transitions, 2049 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:10,897 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:10,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:25:10,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:11,771 INFO L129 PetriNetUnfolder]: 386/1565 cut-off events. [2022-07-12 10:25:11,771 INFO L130 PetriNetUnfolder]: For 11749/11754 co-relation queries the response was YES. [2022-07-12 10:25:11,785 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6853 conditions, 1565 events. 386/1565 cut-off events. For 11749/11754 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 10624 event pairs, 214 based on Foata normal form. 1/1484 useless extension candidates. Maximal degree in co-relation 6736. Up to 432 conditions per place. [2022-07-12 10:25:11,789 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 145 selfloop transitions, 49 changer transitions 42/321 dead transitions. [2022-07-12 10:25:11,790 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 321 transitions, 3161 flow [2022-07-12 10:25:11,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 10:25:11,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-12 10:25:11,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2953 transitions. [2022-07-12 10:25:11,791 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6061165845648604 [2022-07-12 10:25:11,792 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2953 transitions. [2022-07-12 10:25:11,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2953 transitions. [2022-07-12 10:25:11,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:11,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2953 transitions. [2022-07-12 10:25:11,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 105.46428571428571) internal successors, (2953), 28 states have internal predecessors, (2953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:11,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:11,796 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:11,796 INFO L186 Difference]: Start difference. First operand has 343 places, 234 transitions, 2049 flow. Second operand 28 states and 2953 transitions. [2022-07-12 10:25:11,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 321 transitions, 3161 flow [2022-07-12 10:25:11,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 321 transitions, 2955 flow, removed 39 selfloop flow, removed 19 redundant places. [2022-07-12 10:25:11,837 INFO L242 Difference]: Finished difference. Result has 354 places, 231 transitions, 1960 flow [2022-07-12 10:25:11,838 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1900, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1960, PETRI_PLACES=354, PETRI_TRANSITIONS=231} [2022-07-12 10:25:11,838 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 197 predicate places. [2022-07-12 10:25:11,838 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 231 transitions, 1960 flow [2022-07-12 10:25:11,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:11,839 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:11,839 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:11,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-07-12 10:25:11,839 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:11,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:11,839 INFO L85 PathProgramCache]: Analyzing trace with hash -946938325, now seen corresponding path program 30 times [2022-07-12 10:25:11,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:11,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423797223] [2022-07-12 10:25:11,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:11,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:11,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:11,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:11,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423797223] [2022-07-12 10:25:11,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423797223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:11,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:11,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:25:11,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785218477] [2022-07-12 10:25:11,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:11,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:25:11,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:11,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:25:11,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:25:11,997 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:25:11,997 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 231 transitions, 1960 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:11,998 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:11,998 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:25:11,998 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:12,914 INFO L129 PetriNetUnfolder]: 365/1482 cut-off events. [2022-07-12 10:25:12,914 INFO L130 PetriNetUnfolder]: For 11189/11194 co-relation queries the response was YES. [2022-07-12 10:25:12,928 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6394 conditions, 1482 events. 365/1482 cut-off events. For 11189/11194 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 9775 event pairs, 196 based on Foata normal form. 1/1403 useless extension candidates. Maximal degree in co-relation 6271. Up to 432 conditions per place. [2022-07-12 10:25:12,932 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 127 selfloop transitions, 30 changer transitions 49/291 dead transitions. [2022-07-12 10:25:12,932 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 291 transitions, 2713 flow [2022-07-12 10:25:12,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-12 10:25:12,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-12 10:25:12,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2734 transitions. [2022-07-12 10:25:12,934 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6043324491600354 [2022-07-12 10:25:12,934 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2734 transitions. [2022-07-12 10:25:12,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2734 transitions. [2022-07-12 10:25:12,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:12,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2734 transitions. [2022-07-12 10:25:12,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 105.15384615384616) internal successors, (2734), 26 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:12,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:12,939 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:12,939 INFO L186 Difference]: Start difference. First operand has 354 places, 231 transitions, 1960 flow. Second operand 26 states and 2734 transitions. [2022-07-12 10:25:12,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 291 transitions, 2713 flow [2022-07-12 10:25:12,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 291 transitions, 2550 flow, removed 38 selfloop flow, removed 22 redundant places. [2022-07-12 10:25:12,980 INFO L242 Difference]: Finished difference. Result has 346 places, 201 transitions, 1501 flow [2022-07-12 10:25:12,981 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1825, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1501, PETRI_PLACES=346, PETRI_TRANSITIONS=201} [2022-07-12 10:25:12,981 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 189 predicate places. [2022-07-12 10:25:12,981 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 201 transitions, 1501 flow [2022-07-12 10:25:12,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:12,982 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:12,982 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:12,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-07-12 10:25:12,982 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:12,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:12,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1696444989, now seen corresponding path program 31 times [2022-07-12 10:25:12,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:12,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942238614] [2022-07-12 10:25:12,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:12,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:13,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:13,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:13,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942238614] [2022-07-12 10:25:13,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942238614] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:13,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:13,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:25:13,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445589187] [2022-07-12 10:25:13,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:13,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:25:13,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:13,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:25:13,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:25:13,141 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:25:13,142 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 201 transitions, 1501 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:13,142 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:13,142 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:25:13,142 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:14,230 INFO L129 PetriNetUnfolder]: 372/1480 cut-off events. [2022-07-12 10:25:14,230 INFO L130 PetriNetUnfolder]: For 11102/11109 co-relation queries the response was YES. [2022-07-12 10:25:14,240 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6433 conditions, 1480 events. 372/1480 cut-off events. For 11102/11109 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9859 event pairs, 189 based on Foata normal form. 2/1413 useless extension candidates. Maximal degree in co-relation 6319. Up to 432 conditions per place. [2022-07-12 10:25:14,244 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 170 selfloop transitions, 34 changer transitions 60/349 dead transitions. [2022-07-12 10:25:14,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 349 transitions, 3396 flow [2022-07-12 10:25:14,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-12 10:25:14,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-12 10:25:14,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3387 transitions. [2022-07-12 10:25:14,246 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6082974137931034 [2022-07-12 10:25:14,246 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3387 transitions. [2022-07-12 10:25:14,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3387 transitions. [2022-07-12 10:25:14,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:14,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3387 transitions. [2022-07-12 10:25:14,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 105.84375) internal successors, (3387), 32 states have internal predecessors, (3387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:14,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:14,252 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 174.0) internal successors, (5742), 33 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:14,253 INFO L186 Difference]: Start difference. First operand has 346 places, 201 transitions, 1501 flow. Second operand 32 states and 3387 transitions. [2022-07-12 10:25:14,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 349 transitions, 3396 flow [2022-07-12 10:25:14,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 349 transitions, 2992 flow, removed 119 selfloop flow, removed 25 redundant places. [2022-07-12 10:25:14,279 INFO L242 Difference]: Finished difference. Result has 333 places, 202 transitions, 1496 flow [2022-07-12 10:25:14,279 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1339, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1496, PETRI_PLACES=333, PETRI_TRANSITIONS=202} [2022-07-12 10:25:14,280 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 176 predicate places. [2022-07-12 10:25:14,280 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 202 transitions, 1496 flow [2022-07-12 10:25:14,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:14,280 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:14,280 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:14,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-07-12 10:25:14,281 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:14,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:14,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1127173249, now seen corresponding path program 32 times [2022-07-12 10:25:14,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:14,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47667481] [2022-07-12 10:25:14,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:14,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:14,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:14,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:14,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47667481] [2022-07-12 10:25:14,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47667481] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:14,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:14,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:25:14,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499520226] [2022-07-12 10:25:14,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:14,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:25:14,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:14,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:25:14,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:25:14,437 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-07-12 10:25:14,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 202 transitions, 1496 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:14,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:14,438 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-07-12 10:25:14,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:15,323 INFO L129 PetriNetUnfolder]: 360/1428 cut-off events. [2022-07-12 10:25:15,324 INFO L130 PetriNetUnfolder]: For 10483/10489 co-relation queries the response was YES. [2022-07-12 10:25:15,339 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6188 conditions, 1428 events. 360/1428 cut-off events. For 10483/10489 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9325 event pairs, 199 based on Foata normal form. 1/1348 useless extension candidates. Maximal degree in co-relation 6068. Up to 432 conditions per place. [2022-07-12 10:25:15,343 INFO L132 encePairwiseOnDemand]: 150/174 looper letters, 137 selfloop transitions, 52 changer transitions 33/307 dead transitions. [2022-07-12 10:25:15,343 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 307 transitions, 3202 flow [2022-07-12 10:25:15,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:25:15,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:25:15,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2546 transitions. [2022-07-12 10:25:15,345 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6096743295019157 [2022-07-12 10:25:15,345 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2546 transitions. [2022-07-12 10:25:15,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2546 transitions. [2022-07-12 10:25:15,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:15,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2546 transitions. [2022-07-12 10:25:15,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 106.08333333333333) internal successors, (2546), 24 states have internal predecessors, (2546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:15,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:15,349 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:15,350 INFO L186 Difference]: Start difference. First operand has 333 places, 202 transitions, 1496 flow. Second operand 24 states and 2546 transitions. [2022-07-12 10:25:15,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 307 transitions, 3202 flow [2022-07-12 10:25:15,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 307 transitions, 2737 flow, removed 133 selfloop flow, removed 31 redundant places. [2022-07-12 10:25:15,380 INFO L242 Difference]: Finished difference. Result has 319 places, 222 transitions, 1841 flow [2022-07-12 10:25:15,380 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1305, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1841, PETRI_PLACES=319, PETRI_TRANSITIONS=222} [2022-07-12 10:25:15,380 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 162 predicate places. [2022-07-12 10:25:15,380 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 222 transitions, 1841 flow [2022-07-12 10:25:15,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:15,381 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:15,381 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:15,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-07-12 10:25:15,381 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:15,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:15,381 INFO L85 PathProgramCache]: Analyzing trace with hash -755832695, now seen corresponding path program 33 times [2022-07-12 10:25:15,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:15,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130618214] [2022-07-12 10:25:15,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:15,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:15,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:15,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:15,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130618214] [2022-07-12 10:25:15,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130618214] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:15,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:15,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:15,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758536139] [2022-07-12 10:25:15,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:15,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:15,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:15,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:15,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:15,422 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2022-07-12 10:25:15,422 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 222 transitions, 1841 flow. Second operand has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:15,422 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:15,422 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2022-07-12 10:25:15,422 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:15,501 INFO L129 PetriNetUnfolder]: 43/494 cut-off events. [2022-07-12 10:25:15,502 INFO L130 PetriNetUnfolder]: For 1334/1334 co-relation queries the response was YES. [2022-07-12 10:25:15,506 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1318 conditions, 494 events. 43/494 cut-off events. For 1334/1334 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2088 event pairs, 26 based on Foata normal form. 1/471 useless extension candidates. Maximal degree in co-relation 1206. Up to 57 conditions per place. [2022-07-12 10:25:15,507 INFO L132 encePairwiseOnDemand]: 168/174 looper letters, 28 selfloop transitions, 5 changer transitions 1/153 dead transitions. [2022-07-12 10:25:15,507 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 153 transitions, 639 flow [2022-07-12 10:25:15,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:25:15,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:25:15,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 731 transitions. [2022-07-12 10:25:15,508 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8402298850574713 [2022-07-12 10:25:15,508 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 731 transitions. [2022-07-12 10:25:15,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 731 transitions. [2022-07-12 10:25:15,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:15,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 731 transitions. [2022-07-12 10:25:15,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.2) internal successors, (731), 5 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:15,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:15,510 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:15,510 INFO L186 Difference]: Start difference. First operand has 319 places, 222 transitions, 1841 flow. Second operand 5 states and 731 transitions. [2022-07-12 10:25:15,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 153 transitions, 639 flow [2022-07-12 10:25:15,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 153 transitions, 541 flow, removed 34 selfloop flow, removed 33 redundant places. [2022-07-12 10:25:15,515 INFO L242 Difference]: Finished difference. Result has 237 places, 147 transitions, 450 flow [2022-07-12 10:25:15,516 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=450, PETRI_PLACES=237, PETRI_TRANSITIONS=147} [2022-07-12 10:25:15,516 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 80 predicate places. [2022-07-12 10:25:15,516 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 147 transitions, 450 flow [2022-07-12 10:25:15,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:15,516 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:15,516 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:15,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-07-12 10:25:15,517 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:15,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:15,517 INFO L85 PathProgramCache]: Analyzing trace with hash 664491577, now seen corresponding path program 1 times [2022-07-12 10:25:15,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:15,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400804814] [2022-07-12 10:25:15,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:15,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:15,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:15,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:15,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400804814] [2022-07-12 10:25:15,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400804814] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:15,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:15,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-12 10:25:15,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053713421] [2022-07-12 10:25:15,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:15,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-12 10:25:15,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:15,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-12 10:25:15,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-07-12 10:25:15,936 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-12 10:25:15,937 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 147 transitions, 450 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:15,937 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:15,937 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-12 10:25:15,937 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:23,318 INFO L129 PetriNetUnfolder]: 586/1832 cut-off events. [2022-07-12 10:25:23,318 INFO L130 PetriNetUnfolder]: For 2595/2595 co-relation queries the response was YES. [2022-07-12 10:25:23,327 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4627 conditions, 1832 events. 586/1832 cut-off events. For 2595/2595 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 10950 event pairs, 0 based on Foata normal form. 1/1807 useless extension candidates. Maximal degree in co-relation 4544. Up to 135 conditions per place. [2022-07-12 10:25:23,330 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 342 selfloop transitions, 20 changer transitions 183/616 dead transitions. [2022-07-12 10:25:23,330 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 616 transitions, 3610 flow [2022-07-12 10:25:23,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-07-12 10:25:23,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2022-07-12 10:25:23,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 7849 transitions. [2022-07-12 10:25:23,334 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5126044932079414 [2022-07-12 10:25:23,334 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 7849 transitions. [2022-07-12 10:25:23,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 7849 transitions. [2022-07-12 10:25:23,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:23,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 7849 transitions. [2022-07-12 10:25:23,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 89.19318181818181) internal successors, (7849), 88 states have internal predecessors, (7849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:23,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:23,346 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:23,346 INFO L186 Difference]: Start difference. First operand has 237 places, 147 transitions, 450 flow. Second operand 88 states and 7849 transitions. [2022-07-12 10:25:23,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 616 transitions, 3610 flow [2022-07-12 10:25:23,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 616 transitions, 3596 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-12 10:25:23,356 INFO L242 Difference]: Finished difference. Result has 387 places, 147 transitions, 627 flow [2022-07-12 10:25:23,357 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=627, PETRI_PLACES=387, PETRI_TRANSITIONS=147} [2022-07-12 10:25:23,357 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 230 predicate places. [2022-07-12 10:25:23,357 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 147 transitions, 627 flow [2022-07-12 10:25:23,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:23,358 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:23,358 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:23,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-07-12 10:25:23,358 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:23,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:23,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1559279357, now seen corresponding path program 2 times [2022-07-12 10:25:23,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:23,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182048998] [2022-07-12 10:25:23,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:23,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:23,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:23,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:23,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182048998] [2022-07-12 10:25:23,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182048998] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:23,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:23,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-12 10:25:23,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737348748] [2022-07-12 10:25:23,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:23,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-12 10:25:23,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:23,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-12 10:25:23,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2022-07-12 10:25:23,811 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-12 10:25:23,812 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 147 transitions, 627 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:23,812 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:23,812 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-12 10:25:23,812 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:33,886 INFO L129 PetriNetUnfolder]: 889/2794 cut-off events. [2022-07-12 10:25:33,886 INFO L130 PetriNetUnfolder]: For 16705/16705 co-relation queries the response was YES. [2022-07-12 10:25:33,912 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10741 conditions, 2794 events. 889/2794 cut-off events. For 16705/16705 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 19428 event pairs, 50 based on Foata normal form. 1/2736 useless extension candidates. Maximal degree in co-relation 10587. Up to 895 conditions per place. [2022-07-12 10:25:33,918 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 361 selfloop transitions, 20 changer transitions 160/612 dead transitions. [2022-07-12 10:25:33,918 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 612 transitions, 4972 flow [2022-07-12 10:25:33,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-07-12 10:25:33,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2022-07-12 10:25:33,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 7845 transitions. [2022-07-12 10:25:33,923 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5123432601880877 [2022-07-12 10:25:33,923 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 7845 transitions. [2022-07-12 10:25:33,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 7845 transitions. [2022-07-12 10:25:33,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:33,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 7845 transitions. [2022-07-12 10:25:33,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 89.14772727272727) internal successors, (7845), 88 states have internal predecessors, (7845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:33,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:33,936 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:33,936 INFO L186 Difference]: Start difference. First operand has 387 places, 147 transitions, 627 flow. Second operand 88 states and 7845 transitions. [2022-07-12 10:25:33,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 612 transitions, 4972 flow [2022-07-12 10:25:33,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 612 transitions, 3579 flow, removed 457 selfloop flow, removed 82 redundant places. [2022-07-12 10:25:33,968 INFO L242 Difference]: Finished difference. Result has 406 places, 160 transitions, 863 flow [2022-07-12 10:25:33,968 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=863, PETRI_PLACES=406, PETRI_TRANSITIONS=160} [2022-07-12 10:25:33,968 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 249 predicate places. [2022-07-12 10:25:33,968 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 160 transitions, 863 flow [2022-07-12 10:25:33,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:33,969 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:33,969 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:33,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-07-12 10:25:33,969 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:33,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:33,970 INFO L85 PathProgramCache]: Analyzing trace with hash -918801979, now seen corresponding path program 3 times [2022-07-12 10:25:33,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:33,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050932857] [2022-07-12 10:25:33,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:33,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:34,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:34,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:34,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050932857] [2022-07-12 10:25:34,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050932857] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:34,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:34,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-12 10:25:34,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194419827] [2022-07-12 10:25:34,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:34,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-12 10:25:34,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:34,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-12 10:25:34,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2022-07-12 10:25:34,497 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-12 10:25:34,498 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 160 transitions, 863 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:34,498 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:34,498 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-12 10:25:34,498 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:42,124 INFO L129 PetriNetUnfolder]: 983/3177 cut-off events. [2022-07-12 10:25:42,124 INFO L130 PetriNetUnfolder]: For 34130/34130 co-relation queries the response was YES. [2022-07-12 10:25:42,154 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14062 conditions, 3177 events. 983/3177 cut-off events. For 34130/34130 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 23224 event pairs, 44 based on Foata normal form. 1/3142 useless extension candidates. Maximal degree in co-relation 13890. Up to 262 conditions per place. [2022-07-12 10:25:42,161 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 461 selfloop transitions, 25 changer transitions 158/715 dead transitions. [2022-07-12 10:25:42,162 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 715 transitions, 7419 flow [2022-07-12 10:25:42,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-07-12 10:25:42,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-07-12 10:25:42,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7508 transitions. [2022-07-12 10:25:42,166 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5136836343732896 [2022-07-12 10:25:42,166 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7508 transitions. [2022-07-12 10:25:42,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7508 transitions. [2022-07-12 10:25:42,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:42,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7508 transitions. [2022-07-12 10:25:42,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.38095238095238) internal successors, (7508), 84 states have internal predecessors, (7508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:42,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:42,178 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:42,178 INFO L186 Difference]: Start difference. First operand has 406 places, 160 transitions, 863 flow. Second operand 84 states and 7508 transitions. [2022-07-12 10:25:42,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 715 transitions, 7419 flow [2022-07-12 10:25:42,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 715 transitions, 6780 flow, removed 314 selfloop flow, removed 34 redundant places. [2022-07-12 10:25:42,275 INFO L242 Difference]: Finished difference. Result has 453 places, 166 transitions, 1060 flow [2022-07-12 10:25:42,275 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1060, PETRI_PLACES=453, PETRI_TRANSITIONS=166} [2022-07-12 10:25:42,275 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 296 predicate places. [2022-07-12 10:25:42,276 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 166 transitions, 1060 flow [2022-07-12 10:25:42,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:42,276 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:42,276 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:42,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-07-12 10:25:42,276 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:42,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:42,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1258355779, now seen corresponding path program 4 times [2022-07-12 10:25:42,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:42,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84807864] [2022-07-12 10:25:42,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:42,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:42,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:42,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:42,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:42,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84807864] [2022-07-12 10:25:42,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84807864] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:42,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:42,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-12 10:25:42,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737256526] [2022-07-12 10:25:42,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:42,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-12 10:25:42,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:42,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-12 10:25:42,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2022-07-12 10:25:42,780 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-12 10:25:42,781 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 166 transitions, 1060 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:42,781 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:42,781 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-12 10:25:42,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:52,216 INFO L129 PetriNetUnfolder]: 1272/4038 cut-off events. [2022-07-12 10:25:52,216 INFO L130 PetriNetUnfolder]: For 44588/44588 co-relation queries the response was YES. [2022-07-12 10:25:52,271 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19927 conditions, 4038 events. 1272/4038 cut-off events. For 44588/44588 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 31570 event pairs, 116 based on Foata normal form. 1/3957 useless extension candidates. Maximal degree in co-relation 19718. Up to 1520 conditions per place. [2022-07-12 10:25:52,284 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 430 selfloop transitions, 22 changer transitions 156/679 dead transitions. [2022-07-12 10:25:52,284 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 679 transitions, 8464 flow [2022-07-12 10:25:52,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-07-12 10:25:52,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-07-12 10:25:52,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7490 transitions. [2022-07-12 10:25:52,288 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5124521072796935 [2022-07-12 10:25:52,288 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7490 transitions. [2022-07-12 10:25:52,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7490 transitions. [2022-07-12 10:25:52,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:52,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7490 transitions. [2022-07-12 10:25:52,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.16666666666667) internal successors, (7490), 84 states have internal predecessors, (7490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:52,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:52,303 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:52,303 INFO L186 Difference]: Start difference. First operand has 453 places, 166 transitions, 1060 flow. Second operand 84 states and 7490 transitions. [2022-07-12 10:25:52,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 679 transitions, 8464 flow [2022-07-12 10:25:52,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 679 transitions, 7142 flow, removed 582 selfloop flow, removed 69 redundant places. [2022-07-12 10:25:52,442 INFO L242 Difference]: Finished difference. Result has 481 places, 179 transitions, 1339 flow [2022-07-12 10:25:52,443 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1339, PETRI_PLACES=481, PETRI_TRANSITIONS=179} [2022-07-12 10:25:52,443 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 324 predicate places. [2022-07-12 10:25:52,443 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 179 transitions, 1339 flow [2022-07-12 10:25:52,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:52,444 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:52,444 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:52,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-07-12 10:25:52,444 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:52,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:52,444 INFO L85 PathProgramCache]: Analyzing trace with hash -248690663, now seen corresponding path program 5 times [2022-07-12 10:25:52,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:52,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143289917] [2022-07-12 10:25:52,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:52,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:52,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:52,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:52,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143289917] [2022-07-12 10:25:52,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143289917] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:52,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:52,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-12 10:25:52,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705608237] [2022-07-12 10:25:52,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:52,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-12 10:25:52,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:52,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-12 10:25:52,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-07-12 10:25:52,854 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-12 10:25:52,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 179 transitions, 1339 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:52,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:52,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-12 10:25:52,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:01,352 INFO L129 PetriNetUnfolder]: 1263/4070 cut-off events. [2022-07-12 10:26:01,352 INFO L130 PetriNetUnfolder]: For 74887/74887 co-relation queries the response was YES. [2022-07-12 10:26:01,404 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22745 conditions, 4070 events. 1263/4070 cut-off events. For 74887/74887 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 32119 event pairs, 106 based on Foata normal form. 1/3960 useless extension candidates. Maximal degree in co-relation 22518. Up to 895 conditions per place. [2022-07-12 10:26:01,418 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 321 selfloop transitions, 58 changer transitions 51/501 dead transitions. [2022-07-12 10:26:01,419 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 501 transitions, 7259 flow [2022-07-12 10:26:01,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-12 10:26:01,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-07-12 10:26:01,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 3696 transitions. [2022-07-12 10:26:01,421 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5310344827586206 [2022-07-12 10:26:01,421 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 3696 transitions. [2022-07-12 10:26:01,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 3696 transitions. [2022-07-12 10:26:01,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:01,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 3696 transitions. [2022-07-12 10:26:01,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 92.4) internal successors, (3696), 40 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:01,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 174.0) internal successors, (7134), 41 states have internal predecessors, (7134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:01,427 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 174.0) internal successors, (7134), 41 states have internal predecessors, (7134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:01,427 INFO L186 Difference]: Start difference. First operand has 481 places, 179 transitions, 1339 flow. Second operand 40 states and 3696 transitions. [2022-07-12 10:26:01,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 501 transitions, 7259 flow [2022-07-12 10:26:01,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 501 transitions, 6504 flow, removed 366 selfloop flow, removed 34 redundant places. [2022-07-12 10:26:01,653 INFO L242 Difference]: Finished difference. Result has 445 places, 205 transitions, 2105 flow [2022-07-12 10:26:01,654 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1246, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=2105, PETRI_PLACES=445, PETRI_TRANSITIONS=205} [2022-07-12 10:26:01,654 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 288 predicate places. [2022-07-12 10:26:01,654 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 205 transitions, 2105 flow [2022-07-12 10:26:01,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:01,655 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:01,655 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:01,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-07-12 10:26:01,655 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:01,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:01,655 INFO L85 PathProgramCache]: Analyzing trace with hash -719380667, now seen corresponding path program 6 times [2022-07-12 10:26:01,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:01,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025676309] [2022-07-12 10:26:01,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:01,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:02,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:02,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:02,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025676309] [2022-07-12 10:26:02,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025676309] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:02,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:02,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-12 10:26:02,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560312149] [2022-07-12 10:26:02,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:02,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-12 10:26:02,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:02,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-12 10:26:02,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2022-07-12 10:26:02,161 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-12 10:26:02,162 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 205 transitions, 2105 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:02,162 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:02,162 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-12 10:26:02,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:11,130 INFO L129 PetriNetUnfolder]: 1425/4615 cut-off events. [2022-07-12 10:26:11,130 INFO L130 PetriNetUnfolder]: For 79565/79565 co-relation queries the response was YES. [2022-07-12 10:26:11,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26174 conditions, 4615 events. 1425/4615 cut-off events. For 79565/79565 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 37459 event pairs, 110 based on Foata normal form. 1/4557 useless extension candidates. Maximal degree in co-relation 25953. Up to 471 conditions per place. [2022-07-12 10:26:11,217 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 543 selfloop transitions, 38 changer transitions 163/815 dead transitions. [2022-07-12 10:26:11,217 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 815 transitions, 11723 flow [2022-07-12 10:26:11,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-07-12 10:26:11,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-07-12 10:26:11,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7507 transitions. [2022-07-12 10:26:11,221 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5136152162014231 [2022-07-12 10:26:11,222 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7507 transitions. [2022-07-12 10:26:11,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7507 transitions. [2022-07-12 10:26:11,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:11,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7507 transitions. [2022-07-12 10:26:11,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.36904761904762) internal successors, (7507), 84 states have internal predecessors, (7507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:11,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:11,376 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:11,376 INFO L186 Difference]: Start difference. First operand has 445 places, 205 transitions, 2105 flow. Second operand 84 states and 7507 transitions. [2022-07-12 10:26:11,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 815 transitions, 11723 flow [2022-07-12 10:26:11,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 815 transitions, 10492 flow, removed 328 selfloop flow, removed 21 redundant places. [2022-07-12 10:26:11,702 INFO L242 Difference]: Finished difference. Result has 563 places, 212 transitions, 1922 flow [2022-07-12 10:26:11,703 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1922, PETRI_PLACES=563, PETRI_TRANSITIONS=212} [2022-07-12 10:26:11,703 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 406 predicate places. [2022-07-12 10:26:11,703 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 212 transitions, 1922 flow [2022-07-12 10:26:11,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:11,704 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:11,704 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:11,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-07-12 10:26:11,704 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:11,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:11,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1821997415, now seen corresponding path program 7 times [2022-07-12 10:26:11,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:11,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400615038] [2022-07-12 10:26:11,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:11,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:12,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:12,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:12,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400615038] [2022-07-12 10:26:12,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400615038] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:12,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:12,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-12 10:26:12,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819995685] [2022-07-12 10:26:12,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:12,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-12 10:26:12,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:12,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-12 10:26:12,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-07-12 10:26:12,125 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-12 10:26:12,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 212 transitions, 1922 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:12,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:12,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-12 10:26:12,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:22,205 INFO L129 PetriNetUnfolder]: 1821/5775 cut-off events. [2022-07-12 10:26:22,205 INFO L130 PetriNetUnfolder]: For 147606/147610 co-relation queries the response was YES. [2022-07-12 10:26:22,366 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38056 conditions, 5775 events. 1821/5775 cut-off events. For 147606/147610 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 50044 event pairs, 275 based on Foata normal form. 1/5633 useless extension candidates. Maximal degree in co-relation 37775. Up to 1517 conditions per place. [2022-07-12 10:26:22,386 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 460 selfloop transitions, 27 changer transitions 156/714 dead transitions. [2022-07-12 10:26:22,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 714 transitions, 12026 flow [2022-07-12 10:26:22,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-07-12 10:26:22,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-07-12 10:26:22,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7541 transitions. [2022-07-12 10:26:22,390 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5159414340448824 [2022-07-12 10:26:22,391 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7541 transitions. [2022-07-12 10:26:22,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7541 transitions. [2022-07-12 10:26:22,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:22,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7541 transitions. [2022-07-12 10:26:22,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.77380952380952) internal successors, (7541), 84 states have internal predecessors, (7541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:22,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:22,404 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:22,405 INFO L186 Difference]: Start difference. First operand has 563 places, 212 transitions, 1922 flow. Second operand 84 states and 7541 transitions. [2022-07-12 10:26:22,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 714 transitions, 12026 flow [2022-07-12 10:26:23,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 714 transitions, 11169 flow, removed 336 selfloop flow, removed 65 redundant places. [2022-07-12 10:26:23,022 INFO L242 Difference]: Finished difference. Result has 593 places, 223 transitions, 2219 flow [2022-07-12 10:26:23,022 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1679, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=2219, PETRI_PLACES=593, PETRI_TRANSITIONS=223} [2022-07-12 10:26:23,022 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 436 predicate places. [2022-07-12 10:26:23,022 INFO L495 AbstractCegarLoop]: Abstraction has has 593 places, 223 transitions, 2219 flow [2022-07-12 10:26:23,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:23,023 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:23,023 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:23,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-07-12 10:26:23,023 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:23,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:23,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1707406083, now seen corresponding path program 8 times [2022-07-12 10:26:23,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:23,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142433822] [2022-07-12 10:26:23,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:23,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:23,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:23,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:23,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142433822] [2022-07-12 10:26:23,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142433822] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:23,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:23,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-12 10:26:23,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189220301] [2022-07-12 10:26:23,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:23,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-12 10:26:23,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:23,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-12 10:26:23,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2022-07-12 10:26:23,587 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-12 10:26:23,588 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 223 transitions, 2219 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:23,588 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:23,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-12 10:26:23,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:32,154 INFO L129 PetriNetUnfolder]: 1961/6274 cut-off events. [2022-07-12 10:26:32,155 INFO L130 PetriNetUnfolder]: For 243987/243991 co-relation queries the response was YES. [2022-07-12 10:26:32,311 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46125 conditions, 6274 events. 1961/6274 cut-off events. For 243987/243991 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 55137 event pairs, 269 based on Foata normal form. 1/6190 useless extension candidates. Maximal degree in co-relation 45824. Up to 993 conditions per place. [2022-07-12 10:26:32,333 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 578 selfloop transitions, 38 changer transitions 168/855 dead transitions. [2022-07-12 10:26:32,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 855 transitions, 14009 flow [2022-07-12 10:26:32,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-07-12 10:26:32,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-07-12 10:26:32,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7505 transitions. [2022-07-12 10:26:32,337 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5134783798576902 [2022-07-12 10:26:32,337 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7505 transitions. [2022-07-12 10:26:32,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7505 transitions. [2022-07-12 10:26:32,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:32,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7505 transitions. [2022-07-12 10:26:32,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.3452380952381) internal successors, (7505), 84 states have internal predecessors, (7505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:32,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:32,350 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:32,350 INFO L186 Difference]: Start difference. First operand has 593 places, 223 transitions, 2219 flow. Second operand 84 states and 7505 transitions. [2022-07-12 10:26:32,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 855 transitions, 14009 flow [2022-07-12 10:26:33,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 855 transitions, 12423 flow, removed 749 selfloop flow, removed 70 redundant places. [2022-07-12 10:26:33,318 INFO L242 Difference]: Finished difference. Result has 613 places, 231 transitions, 2461 flow [2022-07-12 10:26:33,318 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1958, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=2461, PETRI_PLACES=613, PETRI_TRANSITIONS=231} [2022-07-12 10:26:33,318 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 456 predicate places. [2022-07-12 10:26:33,318 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 231 transitions, 2461 flow [2022-07-12 10:26:33,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:33,319 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:33,319 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:33,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-07-12 10:26:33,319 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:33,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:33,320 INFO L85 PathProgramCache]: Analyzing trace with hash -2056909789, now seen corresponding path program 9 times [2022-07-12 10:26:33,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:33,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756644873] [2022-07-12 10:26:33,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:33,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:33,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:33,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:33,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756644873] [2022-07-12 10:26:33,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756644873] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:33,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:33,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-12 10:26:33,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804271717] [2022-07-12 10:26:33,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:33,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-12 10:26:33,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:33,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-12 10:26:33,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2022-07-12 10:26:33,834 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-12 10:26:33,835 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 231 transitions, 2461 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:33,835 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:33,835 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-12 10:26:33,835 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:42,830 INFO L129 PetriNetUnfolder]: 2196/7052 cut-off events. [2022-07-12 10:26:42,831 INFO L130 PetriNetUnfolder]: For 245128/245140 co-relation queries the response was YES. [2022-07-12 10:26:42,974 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50787 conditions, 7052 events. 2196/7052 cut-off events. For 245128/245140 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 63852 event pairs, 701 based on Foata normal form. 3/6862 useless extension candidates. Maximal degree in co-relation 50479. Up to 1872 conditions per place. [2022-07-12 10:26:43,002 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 470 selfloop transitions, 28 changer transitions 161/730 dead transitions. [2022-07-12 10:26:43,002 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 730 transitions, 13762 flow [2022-07-12 10:26:43,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-07-12 10:26:43,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-07-12 10:26:43,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7543 transitions. [2022-07-12 10:26:43,007 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5160782703886152 [2022-07-12 10:26:43,007 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7543 transitions. [2022-07-12 10:26:43,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7543 transitions. [2022-07-12 10:26:43,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:43,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7543 transitions. [2022-07-12 10:26:43,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.79761904761905) internal successors, (7543), 84 states have internal predecessors, (7543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:43,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:43,020 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:43,020 INFO L186 Difference]: Start difference. First operand has 613 places, 231 transitions, 2461 flow. Second operand 84 states and 7543 transitions. [2022-07-12 10:26:43,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 730 transitions, 13762 flow [2022-07-12 10:26:44,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 730 transitions, 12454 flow, removed 561 selfloop flow, removed 66 redundant places. [2022-07-12 10:26:44,045 INFO L242 Difference]: Finished difference. Result has 643 places, 243 transitions, 2749 flow [2022-07-12 10:26:44,045 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2169, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=2749, PETRI_PLACES=643, PETRI_TRANSITIONS=243} [2022-07-12 10:26:44,046 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 486 predicate places. [2022-07-12 10:26:44,046 INFO L495 AbstractCegarLoop]: Abstraction has has 643 places, 243 transitions, 2749 flow [2022-07-12 10:26:44,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:44,046 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:44,046 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:44,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-07-12 10:26:44,047 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:44,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:44,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1243536633, now seen corresponding path program 10 times [2022-07-12 10:26:44,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:44,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584061221] [2022-07-12 10:26:44,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:44,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:44,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:44,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:44,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584061221] [2022-07-12 10:26:44,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584061221] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:44,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:44,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-12 10:26:44,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026701980] [2022-07-12 10:26:44,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:44,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-12 10:26:44,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:44,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-12 10:26:44,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2022-07-12 10:26:44,528 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-12 10:26:44,529 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 243 transitions, 2749 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:44,529 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:44,529 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-12 10:26:44,529 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:56,491 INFO L129 PetriNetUnfolder]: 2370/7588 cut-off events. [2022-07-12 10:26:56,491 INFO L130 PetriNetUnfolder]: For 332609/332613 co-relation queries the response was YES. [2022-07-12 10:26:56,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58557 conditions, 7588 events. 2370/7588 cut-off events. For 332609/332613 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 70195 event pairs, 423 based on Foata normal form. 1/7481 useless extension candidates. Maximal degree in co-relation 58229. Up to 1751 conditions per place. [2022-07-12 10:26:56,674 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 602 selfloop transitions, 36 changer transitions 173/882 dead transitions. [2022-07-12 10:26:56,674 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 882 transitions, 15503 flow [2022-07-12 10:26:56,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-07-12 10:26:56,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-07-12 10:26:56,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7504 transitions. [2022-07-12 10:26:56,678 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5134099616858238 [2022-07-12 10:26:56,678 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7504 transitions. [2022-07-12 10:26:56,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7504 transitions. [2022-07-12 10:26:56,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:56,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7504 transitions. [2022-07-12 10:26:56,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.33333333333333) internal successors, (7504), 84 states have internal predecessors, (7504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:56,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:56,690 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:56,690 INFO L186 Difference]: Start difference. First operand has 643 places, 243 transitions, 2749 flow. Second operand 84 states and 7504 transitions. [2022-07-12 10:26:56,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 661 places, 882 transitions, 15503 flow [2022-07-12 10:26:58,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 882 transitions, 13951 flow, removed 750 selfloop flow, removed 70 redundant places. [2022-07-12 10:26:58,241 INFO L242 Difference]: Finished difference. Result has 665 places, 252 transitions, 3046 flow [2022-07-12 10:26:58,241 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2461, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=3046, PETRI_PLACES=665, PETRI_TRANSITIONS=252} [2022-07-12 10:26:58,241 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 508 predicate places. [2022-07-12 10:26:58,242 INFO L495 AbstractCegarLoop]: Abstraction has has 665 places, 252 transitions, 3046 flow [2022-07-12 10:26:58,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:58,242 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:58,242 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:58,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-07-12 10:26:58,242 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:58,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:58,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1234404879, now seen corresponding path program 11 times [2022-07-12 10:26:58,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:58,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318771442] [2022-07-12 10:26:58,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:58,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:58,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:58,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:58,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318771442] [2022-07-12 10:26:58,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318771442] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:58,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:58,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-12 10:26:58,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76155024] [2022-07-12 10:26:58,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:58,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-12 10:26:58,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:58,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-12 10:26:58,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2022-07-12 10:26:58,751 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-12 10:26:58,751 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 665 places, 252 transitions, 3046 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:58,752 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:58,752 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-12 10:26:58,752 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:10,010 INFO L129 PetriNetUnfolder]: 2354/7347 cut-off events. [2022-07-12 10:27:10,010 INFO L130 PetriNetUnfolder]: For 325645/325653 co-relation queries the response was YES. [2022-07-12 10:27:10,175 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58387 conditions, 7347 events. 2354/7347 cut-off events. For 325645/325653 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 66049 event pairs, 1308 based on Foata normal form. 3/7185 useless extension candidates. Maximal degree in co-relation 58050. Up to 1903 conditions per place. [2022-07-12 10:27:10,205 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 483 selfloop transitions, 29 changer transitions 151/734 dead transitions. [2022-07-12 10:27:10,205 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 683 places, 734 transitions, 15238 flow [2022-07-12 10:27:10,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-07-12 10:27:10,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-07-12 10:27:10,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7545 transitions. [2022-07-12 10:27:10,209 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5162151067323482 [2022-07-12 10:27:10,209 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7545 transitions. [2022-07-12 10:27:10,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7545 transitions. [2022-07-12 10:27:10,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:10,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7545 transitions. [2022-07-12 10:27:10,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.82142857142857) internal successors, (7545), 84 states have internal predecessors, (7545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:10,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:10,222 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:10,222 INFO L186 Difference]: Start difference. First operand has 665 places, 252 transitions, 3046 flow. Second operand 84 states and 7545 transitions. [2022-07-12 10:27:10,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 683 places, 734 transitions, 15238 flow [2022-07-12 10:27:12,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 621 places, 734 transitions, 13735 flow, removed 659 selfloop flow, removed 62 redundant places. [2022-07-12 10:27:12,031 INFO L242 Difference]: Finished difference. Result has 700 places, 265 transitions, 3357 flow [2022-07-12 10:27:12,032 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2721, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=3357, PETRI_PLACES=700, PETRI_TRANSITIONS=265} [2022-07-12 10:27:12,032 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 543 predicate places. [2022-07-12 10:27:12,032 INFO L495 AbstractCegarLoop]: Abstraction has has 700 places, 265 transitions, 3357 flow [2022-07-12 10:27:12,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:12,032 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:12,032 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:12,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-07-12 10:27:12,033 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:27:12,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:12,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1351584869, now seen corresponding path program 12 times [2022-07-12 10:27:12,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:12,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895168874] [2022-07-12 10:27:12,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:12,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:12,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:12,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:12,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895168874] [2022-07-12 10:27:12,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895168874] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:12,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:12,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-12 10:27:12,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94683671] [2022-07-12 10:27:12,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:12,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-12 10:27:12,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:12,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-12 10:27:12,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2022-07-12 10:27:12,597 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-12 10:27:12,598 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 700 places, 265 transitions, 3357 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:12,598 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:12,598 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-12 10:27:12,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:20,746 INFO L129 PetriNetUnfolder]: 2818/8960 cut-off events. [2022-07-12 10:27:20,747 INFO L130 PetriNetUnfolder]: For 456442/456442 co-relation queries the response was YES. [2022-07-12 10:27:20,964 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73979 conditions, 8960 events. 2818/8960 cut-off events. For 456442/456442 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 85377 event pairs, 214 based on Foata normal form. 1/8825 useless extension candidates. Maximal degree in co-relation 73617. Up to 2410 conditions per place. [2022-07-12 10:27:21,003 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 626 selfloop transitions, 59 changer transitions 94/850 dead transitions. [2022-07-12 10:27:21,003 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 678 places, 850 transitions, 17560 flow [2022-07-12 10:27:21,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-12 10:27:21,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-07-12 10:27:21,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 4066 transitions. [2022-07-12 10:27:21,006 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5310867293625914 [2022-07-12 10:27:21,006 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 4066 transitions. [2022-07-12 10:27:21,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 4066 transitions. [2022-07-12 10:27:21,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:21,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 4066 transitions. [2022-07-12 10:27:21,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 92.4090909090909) internal successors, (4066), 44 states have internal predecessors, (4066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:21,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 174.0) internal successors, (7830), 45 states have internal predecessors, (7830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:21,013 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 174.0) internal successors, (7830), 45 states have internal predecessors, (7830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:21,013 INFO L186 Difference]: Start difference. First operand has 700 places, 265 transitions, 3357 flow. Second operand 44 states and 4066 transitions. [2022-07-12 10:27:21,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 678 places, 850 transitions, 17560 flow [2022-07-12 10:27:23,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 850 transitions, 15619 flow, removed 953 selfloop flow, removed 70 redundant places. [2022-07-12 10:27:23,212 INFO L242 Difference]: Finished difference. Result has 644 places, 302 transitions, 4390 flow [2022-07-12 10:27:23,213 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3032, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4390, PETRI_PLACES=644, PETRI_TRANSITIONS=302} [2022-07-12 10:27:23,213 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 487 predicate places. [2022-07-12 10:27:23,213 INFO L495 AbstractCegarLoop]: Abstraction has has 644 places, 302 transitions, 4390 flow [2022-07-12 10:27:23,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:23,214 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:23,214 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:23,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-07-12 10:27:23,214 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:27:23,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:23,214 INFO L85 PathProgramCache]: Analyzing trace with hash -2122268321, now seen corresponding path program 13 times [2022-07-12 10:27:23,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:23,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101915562] [2022-07-12 10:27:23,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:23,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:23,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:23,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:23,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101915562] [2022-07-12 10:27:23,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101915562] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:23,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:23,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-12 10:27:23,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328525058] [2022-07-12 10:27:23,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:23,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-12 10:27:23,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:23,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-12 10:27:23,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2022-07-12 10:27:23,837 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-12 10:27:23,837 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 644 places, 302 transitions, 4390 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:23,837 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:23,837 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-12 10:27:23,837 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:36,414 INFO L129 PetriNetUnfolder]: 2922/8916 cut-off events. [2022-07-12 10:27:36,415 INFO L130 PetriNetUnfolder]: For 423288/423292 co-relation queries the response was YES. [2022-07-12 10:27:36,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75754 conditions, 8916 events. 2922/8916 cut-off events. For 423288/423292 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 84163 event pairs, 1064 based on Foata normal form. 1/8696 useless extension candidates. Maximal degree in co-relation 75421. Up to 3035 conditions per place. [2022-07-12 10:27:36,658 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 679 selfloop transitions, 54 changer transitions 152/956 dead transitions. [2022-07-12 10:27:36,658 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 705 places, 956 transitions, 20336 flow [2022-07-12 10:27:36,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-07-12 10:27:36,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-07-12 10:27:36,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7167 transitions. [2022-07-12 10:27:36,663 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5148706896551725 [2022-07-12 10:27:36,664 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7167 transitions. [2022-07-12 10:27:36,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7167 transitions. [2022-07-12 10:27:36,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:36,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7167 transitions. [2022-07-12 10:27:36,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.5875) internal successors, (7167), 80 states have internal predecessors, (7167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:36,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:36,681 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:36,681 INFO L186 Difference]: Start difference. First operand has 644 places, 302 transitions, 4390 flow. Second operand 80 states and 7167 transitions. [2022-07-12 10:27:36,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 705 places, 956 transitions, 20336 flow [2022-07-12 10:27:38,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 680 places, 956 transitions, 18395 flow, removed 922 selfloop flow, removed 25 redundant places. [2022-07-12 10:27:38,691 INFO L242 Difference]: Finished difference. Result has 743 places, 308 transitions, 4219 flow [2022-07-12 10:27:38,691 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3792, PETRI_DIFFERENCE_MINUEND_PLACES=601, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=4219, PETRI_PLACES=743, PETRI_TRANSITIONS=308} [2022-07-12 10:27:38,692 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, 586 predicate places. [2022-07-12 10:27:38,692 INFO L495 AbstractCegarLoop]: Abstraction has has 743 places, 308 transitions, 4219 flow [2022-07-12 10:27:38,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:38,692 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:38,692 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:38,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-07-12 10:27:38,693 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:27:38,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:38,693 INFO L85 PathProgramCache]: Analyzing trace with hash -12562955, now seen corresponding path program 14 times [2022-07-12 10:27:38,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:38,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986364204] [2022-07-12 10:27:38,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:38,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:39,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:39,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:39,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986364204] [2022-07-12 10:27:39,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986364204] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:39,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:39,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-07-12 10:27:39,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147082824] [2022-07-12 10:27:39,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:39,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-12 10:27:39,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:39,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-12 10:27:39,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-07-12 10:27:39,263 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-07-12 10:27:39,263 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 743 places, 308 transitions, 4219 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:39,263 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:39,263 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-07-12 10:27:39,263 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand