./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-match-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-match-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3c2ccb27a3ce50ce458a10a4aa8fbbd4d9c9d88060b8c7df98385ed8946afbfa --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:40:42,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:40:42,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:40:42,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:40:42,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:40:42,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:40:42,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:40:42,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:40:42,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:40:42,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:40:42,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:40:42,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:40:42,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:40:42,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:40:42,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:40:42,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:40:42,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:40:42,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:40:42,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:40:42,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:40:42,925 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:40:42,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:40:42,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:40:42,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:40:42,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:40:42,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:40:42,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:40:42,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:40:42,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:40:42,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:40:42,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:40:42,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:40:42,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:40:42,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:40:42,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:40:42,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:40:42,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:40:42,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:40:42,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:40:42,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:40:42,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:40:42,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:40:42,944 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:40:42,973 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:40:42,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:40:42,974 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:40:42,974 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:40:42,975 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:40:42,975 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:40:42,976 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:40:42,976 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:40:42,976 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:40:42,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:40:42,977 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:40:42,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:40:42,978 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:40:42,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:40:42,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:40:42,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:40:42,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:40:42,979 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:40:42,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:40:42,980 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:40:42,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:40:42,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:40:42,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:40:42,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:40:42,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:40:42,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:40:42,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:40:42,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:40:42,982 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:40:42,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:40:42,983 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:40:42,983 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:40:42,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:40:42,983 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c2ccb27a3ce50ce458a10a4aa8fbbd4d9c9d88060b8c7df98385ed8946afbfa [2022-07-22 21:40:43,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:40:43,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:40:43,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:40:43,235 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:40:43,236 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:40:43,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-match-subst.wvr.c [2022-07-22 21:40:43,307 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2d9a88e0/5fe73d41ce4141ef928f1d70d62d1f7b/FLAG58fd52c17 [2022-07-22 21:40:43,687 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:40:43,688 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-match-subst.wvr.c [2022-07-22 21:40:43,693 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2d9a88e0/5fe73d41ce4141ef928f1d70d62d1f7b/FLAG58fd52c17 [2022-07-22 21:40:43,703 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2d9a88e0/5fe73d41ce4141ef928f1d70d62d1f7b [2022-07-22 21:40:43,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:40:43,706 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:40:43,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:40:43,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:40:43,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:40:43,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:40:43" (1/1) ... [2022-07-22 21:40:43,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d7bd48b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:40:43, skipping insertion in model container [2022-07-22 21:40:43,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:40:43" (1/1) ... [2022-07-22 21:40:43,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:40:43,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:40:43,878 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-match-subst.wvr.c[3017,3030] [2022-07-22 21:40:43,882 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:40:43,888 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:40:43,907 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-match-subst.wvr.c[3017,3030] [2022-07-22 21:40:43,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:40:43,920 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:40:43,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:40:43 WrapperNode [2022-07-22 21:40:43,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:40:43,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:40:43,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:40:43,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:40:43,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:40:43" (1/1) ... [2022-07-22 21:40:43,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:40:43" (1/1) ... [2022-07-22 21:40:43,962 INFO L137 Inliner]: procedures = 23, calls = 34, calls flagged for inlining = 12, calls inlined = 22, statements flattened = 254 [2022-07-22 21:40:43,963 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:40:43,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:40:43,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:40:43,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:40:43,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:40:43" (1/1) ... [2022-07-22 21:40:43,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:40:43" (1/1) ... [2022-07-22 21:40:43,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:40:43" (1/1) ... [2022-07-22 21:40:43,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:40:43" (1/1) ... [2022-07-22 21:40:43,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:40:43" (1/1) ... [2022-07-22 21:40:43,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:40:43" (1/1) ... [2022-07-22 21:40:44,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:40:43" (1/1) ... [2022-07-22 21:40:44,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:40:44,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:40:44,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:40:44,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:40:44,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:40:43" (1/1) ... [2022-07-22 21:40:44,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:40:44,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:40:44,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 21:40:44,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 21:40:44,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:40:44,065 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-22 21:40:44,065 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-22 21:40:44,066 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-22 21:40:44,066 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-22 21:40:44,066 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-22 21:40:44,066 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-22 21:40:44,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:40:44,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:40:44,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:40:44,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:40:44,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:40:44,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:40:44,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:40:44,068 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:40:44,135 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:40:44,137 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:40:44,511 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:40:44,530 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:40:44,530 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 21:40:44,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:40:44 BoogieIcfgContainer [2022-07-22 21:40:44,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:40:44,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:40:44,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:40:44,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:40:44,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:40:43" (1/3) ... [2022-07-22 21:40:44,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a38a859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:40:44, skipping insertion in model container [2022-07-22 21:40:44,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:40:43" (2/3) ... [2022-07-22 21:40:44,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a38a859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:40:44, skipping insertion in model container [2022-07-22 21:40:44,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:40:44" (3/3) ... [2022-07-22 21:40:44,540 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-match-subst.wvr.c [2022-07-22 21:40:44,544 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:40:44,558 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:40:44,558 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:40:44,558 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:40:44,662 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-22 21:40:44,700 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 333 places, 349 transitions, 722 flow [2022-07-22 21:40:44,889 INFO L129 PetriNetUnfolder]: 26/346 cut-off events. [2022-07-22 21:40:44,890 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 21:40:44,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 359 conditions, 346 events. 26/346 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 635 event pairs, 0 based on Foata normal form. 0/319 useless extension candidates. Maximal degree in co-relation 256. Up to 2 conditions per place. [2022-07-22 21:40:44,902 INFO L82 GeneralOperation]: Start removeDead. Operand has 333 places, 349 transitions, 722 flow [2022-07-22 21:40:44,908 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 319 places, 335 transitions, 688 flow [2022-07-22 21:40:44,919 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:40:44,925 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@3f777960, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@325ae9c5 [2022-07-22 21:40:44,926 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-22 21:40:44,989 INFO L129 PetriNetUnfolder]: 26/334 cut-off events. [2022-07-22 21:40:44,990 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 21:40:44,990 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:44,991 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:44,992 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:44,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:44,998 INFO L85 PathProgramCache]: Analyzing trace with hash -742994273, now seen corresponding path program 1 times [2022-07-22 21:40:45,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:45,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598514662] [2022-07-22 21:40:45,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:45,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:45,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:40:45,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:45,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598514662] [2022-07-22 21:40:45,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598514662] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:40:45,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:40:45,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:40:45,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644306637] [2022-07-22 21:40:45,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:45,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:40:45,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:45,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:40:45,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:40:45,694 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 349 [2022-07-22 21:40:45,699 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 335 transitions, 688 flow. Second operand has 6 states, 6 states have (on average 316.0) internal successors, (1896), 6 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:45,699 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:45,699 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 349 [2022-07-22 21:40:45,700 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:45,936 INFO L129 PetriNetUnfolder]: 31/543 cut-off events. [2022-07-22 21:40:45,937 INFO L130 PetriNetUnfolder]: For 33/39 co-relation queries the response was YES. [2022-07-22 21:40:45,944 INFO L84 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 543 events. 31/543 cut-off events. For 33/39 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1615 event pairs, 6 based on Foata normal form. 78/573 useless extension candidates. Maximal degree in co-relation 509. Up to 31 conditions per place. [2022-07-22 21:40:45,948 INFO L132 encePairwiseOnDemand]: 327/349 looper letters, 26 selfloop transitions, 3 changer transitions 7/336 dead transitions. [2022-07-22 21:40:45,948 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 336 transitions, 789 flow [2022-07-22 21:40:45,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 21:40:45,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-22 21:40:45,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2580 transitions. [2022-07-22 21:40:45,972 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9240687679083095 [2022-07-22 21:40:45,973 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2580 transitions. [2022-07-22 21:40:45,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2580 transitions. [2022-07-22 21:40:45,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:45,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2580 transitions. [2022-07-22 21:40:45,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 322.5) internal successors, (2580), 8 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:45,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 349.0) internal successors, (3141), 9 states have internal predecessors, (3141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:46,000 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 349.0) internal successors, (3141), 9 states have internal predecessors, (3141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:46,002 INFO L186 Difference]: Start difference. First operand has 319 places, 335 transitions, 688 flow. Second operand 8 states and 2580 transitions. [2022-07-22 21:40:46,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 336 transitions, 789 flow [2022-07-22 21:40:46,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 336 transitions, 759 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-22 21:40:46,012 INFO L242 Difference]: Finished difference. Result has 325 places, 321 transitions, 669 flow [2022-07-22 21:40:46,014 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=669, PETRI_PLACES=325, PETRI_TRANSITIONS=321} [2022-07-22 21:40:46,017 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 6 predicate places. [2022-07-22 21:40:46,018 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 321 transitions, 669 flow [2022-07-22 21:40:46,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 316.0) internal successors, (1896), 6 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:46,019 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:46,019 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:46,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:40:46,020 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:46,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:46,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1186332343, now seen corresponding path program 1 times [2022-07-22 21:40:46,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:46,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109781063] [2022-07-22 21:40:46,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:46,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:46,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:40:46,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:46,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109781063] [2022-07-22 21:40:46,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109781063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:40:46,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:40:46,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:40:46,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176540862] [2022-07-22 21:40:46,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:46,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:40:46,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:46,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:40:46,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:40:46,251 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 349 [2022-07-22 21:40:46,254 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 321 transitions, 669 flow. Second operand has 7 states, 7 states have (on average 312.85714285714283) internal successors, (2190), 7 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:46,254 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:46,254 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 349 [2022-07-22 21:40:46,258 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:46,524 INFO L129 PetriNetUnfolder]: 54/751 cut-off events. [2022-07-22 21:40:46,524 INFO L130 PetriNetUnfolder]: For 26/44 co-relation queries the response was YES. [2022-07-22 21:40:46,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 916 conditions, 751 events. 54/751 cut-off events. For 26/44 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3049 event pairs, 18 based on Foata normal form. 1/683 useless extension candidates. Maximal degree in co-relation 893. Up to 64 conditions per place. [2022-07-22 21:40:46,534 INFO L132 encePairwiseOnDemand]: 341/349 looper letters, 33 selfloop transitions, 5 changer transitions 6/341 dead transitions. [2022-07-22 21:40:46,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 341 transitions, 818 flow [2022-07-22 21:40:46,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:40:46,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:40:46,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2833 transitions. [2022-07-22 21:40:46,541 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9019420566698504 [2022-07-22 21:40:46,541 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2833 transitions. [2022-07-22 21:40:46,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2833 transitions. [2022-07-22 21:40:46,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:46,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2833 transitions. [2022-07-22 21:40:46,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 314.77777777777777) internal successors, (2833), 9 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:46,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 349.0) internal successors, (3490), 10 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:46,556 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 349.0) internal successors, (3490), 10 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:46,556 INFO L186 Difference]: Start difference. First operand has 325 places, 321 transitions, 669 flow. Second operand 9 states and 2833 transitions. [2022-07-22 21:40:46,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 341 transitions, 818 flow [2022-07-22 21:40:46,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 341 transitions, 811 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-07-22 21:40:46,564 INFO L242 Difference]: Finished difference. Result has 332 places, 323 transitions, 697 flow [2022-07-22 21:40:46,565 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=697, PETRI_PLACES=332, PETRI_TRANSITIONS=323} [2022-07-22 21:40:46,566 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 13 predicate places. [2022-07-22 21:40:46,566 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 323 transitions, 697 flow [2022-07-22 21:40:46,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.85714285714283) internal successors, (2190), 7 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:46,568 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:46,568 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:46,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:40:46,569 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:46,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:46,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1929877743, now seen corresponding path program 1 times [2022-07-22 21:40:46,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:46,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061996597] [2022-07-22 21:40:46,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:46,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:46,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:40:46,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:46,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061996597] [2022-07-22 21:40:46,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061996597] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:40:46,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:40:46,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:40:46,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447603622] [2022-07-22 21:40:46,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:46,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:40:46,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:46,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:40:46,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:40:46,836 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 349 [2022-07-22 21:40:46,839 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 323 transitions, 697 flow. Second operand has 8 states, 8 states have (on average 309.75) internal successors, (2478), 8 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:46,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:46,839 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 349 [2022-07-22 21:40:46,839 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:47,136 INFO L129 PetriNetUnfolder]: 67/775 cut-off events. [2022-07-22 21:40:47,136 INFO L130 PetriNetUnfolder]: For 51/77 co-relation queries the response was YES. [2022-07-22 21:40:47,145 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1041 conditions, 775 events. 67/775 cut-off events. For 51/77 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3249 event pairs, 26 based on Foata normal form. 1/704 useless extension candidates. Maximal degree in co-relation 1013. Up to 84 conditions per place. [2022-07-22 21:40:47,150 INFO L132 encePairwiseOnDemand]: 338/349 looper letters, 41 selfloop transitions, 8 changer transitions 8/351 dead transitions. [2022-07-22 21:40:47,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 351 transitions, 904 flow [2022-07-22 21:40:47,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 21:40:47,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-22 21:40:47,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3738 transitions. [2022-07-22 21:40:47,158 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8925501432664756 [2022-07-22 21:40:47,158 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3738 transitions. [2022-07-22 21:40:47,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3738 transitions. [2022-07-22 21:40:47,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:47,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3738 transitions. [2022-07-22 21:40:47,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 311.5) internal successors, (3738), 12 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:47,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 349.0) internal successors, (4537), 13 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:47,176 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 349.0) internal successors, (4537), 13 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:47,177 INFO L186 Difference]: Start difference. First operand has 332 places, 323 transitions, 697 flow. Second operand 12 states and 3738 transitions. [2022-07-22 21:40:47,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 351 transitions, 904 flow [2022-07-22 21:40:47,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 351 transitions, 885 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-07-22 21:40:47,185 INFO L242 Difference]: Finished difference. Result has 343 places, 325 transitions, 729 flow [2022-07-22 21:40:47,185 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=729, PETRI_PLACES=343, PETRI_TRANSITIONS=325} [2022-07-22 21:40:47,187 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 24 predicate places. [2022-07-22 21:40:47,187 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 325 transitions, 729 flow [2022-07-22 21:40:47,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 309.75) internal successors, (2478), 8 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:47,188 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:47,189 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:47,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:40:47,189 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:47,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:47,190 INFO L85 PathProgramCache]: Analyzing trace with hash -232079166, now seen corresponding path program 1 times [2022-07-22 21:40:47,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:47,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364120166] [2022-07-22 21:40:47,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:47,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:47,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:40:47,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:47,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364120166] [2022-07-22 21:40:47,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364120166] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:40:47,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:40:47,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 21:40:47,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340021971] [2022-07-22 21:40:47,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:47,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 21:40:47,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:47,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 21:40:47,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 21:40:47,396 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 349 [2022-07-22 21:40:47,398 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 325 transitions, 729 flow. Second operand has 9 states, 9 states have (on average 306.6666666666667) internal successors, (2760), 9 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:47,399 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:47,399 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 349 [2022-07-22 21:40:47,399 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:47,741 INFO L129 PetriNetUnfolder]: 88/957 cut-off events. [2022-07-22 21:40:47,741 INFO L130 PetriNetUnfolder]: For 96/130 co-relation queries the response was YES. [2022-07-22 21:40:47,754 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1334 conditions, 957 events. 88/957 cut-off events. For 96/130 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4808 event pairs, 36 based on Foata normal form. 1/868 useless extension candidates. Maximal degree in co-relation 1301. Up to 109 conditions per place. [2022-07-22 21:40:47,757 INFO L132 encePairwiseOnDemand]: 336/349 looper letters, 48 selfloop transitions, 10 changer transitions 10/359 dead transitions. [2022-07-22 21:40:47,757 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 359 transitions, 984 flow [2022-07-22 21:40:47,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 21:40:47,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-22 21:40:47,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4319 transitions. [2022-07-22 21:40:47,766 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8839541547277937 [2022-07-22 21:40:47,766 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4319 transitions. [2022-07-22 21:40:47,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4319 transitions. [2022-07-22 21:40:47,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:47,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4319 transitions. [2022-07-22 21:40:47,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 308.5) internal successors, (4319), 14 states have internal predecessors, (4319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:47,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 349.0) internal successors, (5235), 15 states have internal predecessors, (5235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:47,789 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 349.0) internal successors, (5235), 15 states have internal predecessors, (5235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:47,789 INFO L186 Difference]: Start difference. First operand has 343 places, 325 transitions, 729 flow. Second operand 14 states and 4319 transitions. [2022-07-22 21:40:47,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 359 transitions, 984 flow [2022-07-22 21:40:47,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 359 transitions, 950 flow, removed 16 selfloop flow, removed 7 redundant places. [2022-07-22 21:40:47,798 INFO L242 Difference]: Finished difference. Result has 354 places, 327 transitions, 760 flow [2022-07-22 21:40:47,799 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=760, PETRI_PLACES=354, PETRI_TRANSITIONS=327} [2022-07-22 21:40:47,799 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 35 predicate places. [2022-07-22 21:40:47,804 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 327 transitions, 760 flow [2022-07-22 21:40:47,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 306.6666666666667) internal successors, (2760), 9 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:47,817 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:47,817 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:47,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:40:47,817 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:47,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:47,818 INFO L85 PathProgramCache]: Analyzing trace with hash 807536200, now seen corresponding path program 1 times [2022-07-22 21:40:47,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:47,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365781296] [2022-07-22 21:40:47,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:47,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:47,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:40:47,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:47,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365781296] [2022-07-22 21:40:47,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365781296] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:40:47,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:40:47,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:40:47,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909749643] [2022-07-22 21:40:47,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:47,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:40:47,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:47,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:40:47,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:40:47,999 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 349 [2022-07-22 21:40:48,001 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 327 transitions, 760 flow. Second operand has 8 states, 8 states have (on average 310.75) internal successors, (2486), 8 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:48,002 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:48,002 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 349 [2022-07-22 21:40:48,002 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:48,319 INFO L129 PetriNetUnfolder]: 179/969 cut-off events. [2022-07-22 21:40:48,319 INFO L130 PetriNetUnfolder]: For 127/143 co-relation queries the response was YES. [2022-07-22 21:40:48,328 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1392 conditions, 969 events. 179/969 cut-off events. For 127/143 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5714 event pairs, 66 based on Foata normal form. 5/899 useless extension candidates. Maximal degree in co-relation 1328. Up to 154 conditions per place. [2022-07-22 21:40:48,333 INFO L132 encePairwiseOnDemand]: 340/349 looper letters, 49 selfloop transitions, 3 changer transitions 26/381 dead transitions. [2022-07-22 21:40:48,334 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 381 transitions, 1058 flow [2022-07-22 21:40:48,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:40:48,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:40:48,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4083 transitions. [2022-07-22 21:40:48,343 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.899933877011241 [2022-07-22 21:40:48,343 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4083 transitions. [2022-07-22 21:40:48,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4083 transitions. [2022-07-22 21:40:48,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:48,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4083 transitions. [2022-07-22 21:40:48,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 314.0769230769231) internal successors, (4083), 13 states have internal predecessors, (4083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:48,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 349.0) internal successors, (4886), 14 states have internal predecessors, (4886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:48,360 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 349.0) internal successors, (4886), 14 states have internal predecessors, (4886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:48,360 INFO L186 Difference]: Start difference. First operand has 354 places, 327 transitions, 760 flow. Second operand 13 states and 4083 transitions. [2022-07-22 21:40:48,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 381 transitions, 1058 flow [2022-07-22 21:40:48,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 381 transitions, 1012 flow, removed 22 selfloop flow, removed 9 redundant places. [2022-07-22 21:40:48,368 INFO L242 Difference]: Finished difference. Result has 360 places, 329 transitions, 769 flow [2022-07-22 21:40:48,369 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=769, PETRI_PLACES=360, PETRI_TRANSITIONS=329} [2022-07-22 21:40:48,371 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 41 predicate places. [2022-07-22 21:40:48,371 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 329 transitions, 769 flow [2022-07-22 21:40:48,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 310.75) internal successors, (2486), 8 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:48,372 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:48,372 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:48,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:40:48,373 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:48,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:48,374 INFO L85 PathProgramCache]: Analyzing trace with hash -27308194, now seen corresponding path program 2 times [2022-07-22 21:40:48,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:48,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554816246] [2022-07-22 21:40:48,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:48,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:48,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:40:48,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:48,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554816246] [2022-07-22 21:40:48,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554816246] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:40:48,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:40:48,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:40:48,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106617819] [2022-07-22 21:40:48,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:48,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:40:48,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:48,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:40:48,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:40:48,529 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 349 [2022-07-22 21:40:48,531 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 329 transitions, 769 flow. Second operand has 8 states, 8 states have (on average 310.75) internal successors, (2486), 8 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:48,531 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:48,531 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 349 [2022-07-22 21:40:48,531 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:48,929 INFO L129 PetriNetUnfolder]: 255/1369 cut-off events. [2022-07-22 21:40:48,929 INFO L130 PetriNetUnfolder]: For 726/752 co-relation queries the response was YES. [2022-07-22 21:40:48,942 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2455 conditions, 1369 events. 255/1369 cut-off events. For 726/752 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9940 event pairs, 126 based on Foata normal form. 1/1257 useless extension candidates. Maximal degree in co-relation 2409. Up to 257 conditions per place. [2022-07-22 21:40:48,948 INFO L132 encePairwiseOnDemand]: 340/349 looper letters, 56 selfloop transitions, 3 changer transitions 25/387 dead transitions. [2022-07-22 21:40:48,948 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 387 transitions, 1182 flow [2022-07-22 21:40:48,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:40:48,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:40:48,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4081 transitions. [2022-07-22 21:40:48,957 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8994930570861803 [2022-07-22 21:40:48,957 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4081 transitions. [2022-07-22 21:40:48,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4081 transitions. [2022-07-22 21:40:48,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:48,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4081 transitions. [2022-07-22 21:40:48,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 313.9230769230769) internal successors, (4081), 13 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:48,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 349.0) internal successors, (4886), 14 states have internal predecessors, (4886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:48,972 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 349.0) internal successors, (4886), 14 states have internal predecessors, (4886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:48,972 INFO L186 Difference]: Start difference. First operand has 360 places, 329 transitions, 769 flow. Second operand 13 states and 4081 transitions. [2022-07-22 21:40:48,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 387 transitions, 1182 flow [2022-07-22 21:40:48,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 387 transitions, 1140 flow, removed 19 selfloop flow, removed 7 redundant places. [2022-07-22 21:40:48,982 INFO L242 Difference]: Finished difference. Result has 368 places, 331 transitions, 803 flow [2022-07-22 21:40:48,982 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=803, PETRI_PLACES=368, PETRI_TRANSITIONS=331} [2022-07-22 21:40:48,985 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 49 predicate places. [2022-07-22 21:40:48,985 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 331 transitions, 803 flow [2022-07-22 21:40:48,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 310.75) internal successors, (2486), 8 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:48,985 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:48,986 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:48,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:40:48,986 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:48,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:48,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1846983216, now seen corresponding path program 3 times [2022-07-22 21:40:48,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:48,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454009960] [2022-07-22 21:40:48,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:48,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:49,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:40:49,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:49,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454009960] [2022-07-22 21:40:49,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454009960] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:40:49,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:40:49,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:40:49,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383907090] [2022-07-22 21:40:49,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:49,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:40:49,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:49,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:40:49,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:40:49,175 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 349 [2022-07-22 21:40:49,177 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 331 transitions, 803 flow. Second operand has 8 states, 8 states have (on average 310.75) internal successors, (2486), 8 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:49,177 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:49,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 349 [2022-07-22 21:40:49,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:49,620 INFO L129 PetriNetUnfolder]: 270/1491 cut-off events. [2022-07-22 21:40:49,621 INFO L130 PetriNetUnfolder]: For 1639/1658 co-relation queries the response was YES. [2022-07-22 21:40:49,636 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2963 conditions, 1491 events. 270/1491 cut-off events. For 1639/1658 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 11248 event pairs, 171 based on Foata normal form. 1/1371 useless extension candidates. Maximal degree in co-relation 2912. Up to 350 conditions per place. [2022-07-22 21:40:49,643 INFO L132 encePairwiseOnDemand]: 340/349 looper letters, 38 selfloop transitions, 8 changer transitions 20/369 dead transitions. [2022-07-22 21:40:49,643 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 369 transitions, 1143 flow [2022-07-22 21:40:49,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 21:40:49,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-22 21:40:49,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3759 transitions. [2022-07-22 21:40:49,650 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8975644699140402 [2022-07-22 21:40:49,651 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3759 transitions. [2022-07-22 21:40:49,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3759 transitions. [2022-07-22 21:40:49,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:49,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3759 transitions. [2022-07-22 21:40:49,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 313.25) internal successors, (3759), 12 states have internal predecessors, (3759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:49,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 349.0) internal successors, (4537), 13 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:49,664 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 349.0) internal successors, (4537), 13 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:49,664 INFO L186 Difference]: Start difference. First operand has 368 places, 331 transitions, 803 flow. Second operand 12 states and 3759 transitions. [2022-07-22 21:40:49,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 369 transitions, 1143 flow [2022-07-22 21:40:49,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 369 transitions, 1115 flow, removed 13 selfloop flow, removed 7 redundant places. [2022-07-22 21:40:49,676 INFO L242 Difference]: Finished difference. Result has 371 places, 338 transitions, 893 flow [2022-07-22 21:40:49,677 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=893, PETRI_PLACES=371, PETRI_TRANSITIONS=338} [2022-07-22 21:40:49,677 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 52 predicate places. [2022-07-22 21:40:49,677 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 338 transitions, 893 flow [2022-07-22 21:40:49,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 310.75) internal successors, (2486), 8 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:49,678 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:49,678 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:49,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:40:49,679 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:49,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:49,679 INFO L85 PathProgramCache]: Analyzing trace with hash 603484824, now seen corresponding path program 4 times [2022-07-22 21:40:49,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:49,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285491183] [2022-07-22 21:40:49,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:49,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:49,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:40:49,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:49,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285491183] [2022-07-22 21:40:49,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285491183] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:40:49,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:40:49,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:40:49,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420404150] [2022-07-22 21:40:49,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:49,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:40:49,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:49,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:40:49,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:40:49,848 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 349 [2022-07-22 21:40:49,850 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 338 transitions, 893 flow. Second operand has 8 states, 8 states have (on average 310.75) internal successors, (2486), 8 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:49,850 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:49,850 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 349 [2022-07-22 21:40:49,850 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:50,265 INFO L129 PetriNetUnfolder]: 262/1393 cut-off events. [2022-07-22 21:40:50,265 INFO L130 PetriNetUnfolder]: For 1786/1820 co-relation queries the response was YES. [2022-07-22 21:40:50,280 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2996 conditions, 1393 events. 262/1393 cut-off events. For 1786/1820 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 10343 event pairs, 151 based on Foata normal form. 2/1278 useless extension candidates. Maximal degree in co-relation 2944. Up to 346 conditions per place. [2022-07-22 21:40:50,290 INFO L132 encePairwiseOnDemand]: 340/349 looper letters, 38 selfloop transitions, 12 changer transitions 19/372 dead transitions. [2022-07-22 21:40:50,290 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 372 transitions, 1231 flow [2022-07-22 21:40:50,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 21:40:50,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-22 21:40:50,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3450 transitions. [2022-07-22 21:40:50,297 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8986715290440219 [2022-07-22 21:40:50,297 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3450 transitions. [2022-07-22 21:40:50,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3450 transitions. [2022-07-22 21:40:50,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:50,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3450 transitions. [2022-07-22 21:40:50,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 313.6363636363636) internal successors, (3450), 11 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:50,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 349.0) internal successors, (4188), 12 states have internal predecessors, (4188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:50,310 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 349.0) internal successors, (4188), 12 states have internal predecessors, (4188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:50,310 INFO L186 Difference]: Start difference. First operand has 371 places, 338 transitions, 893 flow. Second operand 11 states and 3450 transitions. [2022-07-22 21:40:50,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 372 transitions, 1231 flow [2022-07-22 21:40:50,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 372 transitions, 1209 flow, removed 11 selfloop flow, removed 3 redundant places. [2022-07-22 21:40:50,324 INFO L242 Difference]: Finished difference. Result has 380 places, 343 transitions, 984 flow [2022-07-22 21:40:50,324 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=984, PETRI_PLACES=380, PETRI_TRANSITIONS=343} [2022-07-22 21:40:50,326 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 61 predicate places. [2022-07-22 21:40:50,326 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 343 transitions, 984 flow [2022-07-22 21:40:50,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 310.75) internal successors, (2486), 8 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:50,327 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:50,327 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:50,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:40:50,327 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:50,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:50,328 INFO L85 PathProgramCache]: Analyzing trace with hash -87715862, now seen corresponding path program 5 times [2022-07-22 21:40:50,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:50,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924068016] [2022-07-22 21:40:50,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:50,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:50,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:40:50,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:50,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924068016] [2022-07-22 21:40:50,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924068016] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:40:50,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:40:50,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:40:50,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383839156] [2022-07-22 21:40:50,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:50,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:40:50,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:50,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:40:50,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:40:50,507 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 349 [2022-07-22 21:40:50,509 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 343 transitions, 984 flow. Second operand has 8 states, 8 states have (on average 310.75) internal successors, (2486), 8 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:50,509 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:50,509 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 349 [2022-07-22 21:40:50,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:50,951 INFO L129 PetriNetUnfolder]: 247/1383 cut-off events. [2022-07-22 21:40:50,951 INFO L130 PetriNetUnfolder]: For 2342/2361 co-relation queries the response was YES. [2022-07-22 21:40:50,972 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3100 conditions, 1383 events. 247/1383 cut-off events. For 2342/2361 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 10227 event pairs, 155 based on Foata normal form. 1/1268 useless extension candidates. Maximal degree in co-relation 3042. Up to 347 conditions per place. [2022-07-22 21:40:50,979 INFO L132 encePairwiseOnDemand]: 340/349 looper letters, 36 selfloop transitions, 4 changer transitions 26/369 dead transitions. [2022-07-22 21:40:50,979 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 369 transitions, 1263 flow [2022-07-22 21:40:50,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 21:40:50,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-22 21:40:50,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3446 transitions. [2022-07-22 21:40:50,988 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8976295910393332 [2022-07-22 21:40:50,989 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3446 transitions. [2022-07-22 21:40:50,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3446 transitions. [2022-07-22 21:40:50,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:50,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3446 transitions. [2022-07-22 21:40:50,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 313.27272727272725) internal successors, (3446), 11 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) [2022-07-22 21:40:51,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 349.0) internal successors, (4188), 12 states have internal predecessors, (4188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:51,006 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 349.0) internal successors, (4188), 12 states have internal predecessors, (4188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:51,006 INFO L186 Difference]: Start difference. First operand has 380 places, 343 transitions, 984 flow. Second operand 11 states and 3446 transitions. [2022-07-22 21:40:51,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 369 transitions, 1263 flow [2022-07-22 21:40:51,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 369 transitions, 1220 flow, removed 17 selfloop flow, removed 5 redundant places. [2022-07-22 21:40:51,022 INFO L242 Difference]: Finished difference. Result has 385 places, 337 transitions, 898 flow [2022-07-22 21:40:51,023 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=898, PETRI_PLACES=385, PETRI_TRANSITIONS=337} [2022-07-22 21:40:51,023 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 66 predicate places. [2022-07-22 21:40:51,024 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 337 transitions, 898 flow [2022-07-22 21:40:51,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 310.75) internal successors, (2486), 8 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:51,024 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:51,025 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:51,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 21:40:51,025 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:51,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:51,026 INFO L85 PathProgramCache]: Analyzing trace with hash -224770128, now seen corresponding path program 6 times [2022-07-22 21:40:51,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:51,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404712245] [2022-07-22 21:40:51,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:51,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:51,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:40:51,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:51,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404712245] [2022-07-22 21:40:51,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404712245] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:40:51,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:40:51,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:40:51,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279109088] [2022-07-22 21:40:51,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:51,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:40:51,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:51,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:40:51,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:40:51,182 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 349 [2022-07-22 21:40:51,184 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 337 transitions, 898 flow. Second operand has 8 states, 8 states have (on average 310.75) internal successors, (2486), 8 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:51,184 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:51,184 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 349 [2022-07-22 21:40:51,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:51,550 INFO L129 PetriNetUnfolder]: 221/1241 cut-off events. [2022-07-22 21:40:51,551 INFO L130 PetriNetUnfolder]: For 2140/2167 co-relation queries the response was YES. [2022-07-22 21:40:51,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2687 conditions, 1241 events. 221/1241 cut-off events. For 2140/2167 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 8763 event pairs, 145 based on Foata normal form. 2/1136 useless extension candidates. Maximal degree in co-relation 2633. Up to 300 conditions per place. [2022-07-22 21:40:51,574 INFO L132 encePairwiseOnDemand]: 340/349 looper letters, 31 selfloop transitions, 2 changer transitions 28/364 dead transitions. [2022-07-22 21:40:51,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 364 transitions, 1162 flow [2022-07-22 21:40:51,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 21:40:51,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-22 21:40:51,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3756 transitions. [2022-07-22 21:40:51,579 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8968481375358166 [2022-07-22 21:40:51,579 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3756 transitions. [2022-07-22 21:40:51,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3756 transitions. [2022-07-22 21:40:51,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:51,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3756 transitions. [2022-07-22 21:40:51,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 313.0) internal successors, (3756), 12 states have internal predecessors, (3756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:51,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 349.0) internal successors, (4537), 13 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:51,591 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 349.0) internal successors, (4537), 13 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:51,591 INFO L186 Difference]: Start difference. First operand has 385 places, 337 transitions, 898 flow. Second operand 12 states and 3756 transitions. [2022-07-22 21:40:51,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 364 transitions, 1162 flow [2022-07-22 21:40:51,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 364 transitions, 1112 flow, removed 16 selfloop flow, removed 11 redundant places. [2022-07-22 21:40:51,604 INFO L242 Difference]: Finished difference. Result has 380 places, 331 transitions, 826 flow [2022-07-22 21:40:51,605 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=826, PETRI_PLACES=380, PETRI_TRANSITIONS=331} [2022-07-22 21:40:51,605 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 61 predicate places. [2022-07-22 21:40:51,605 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 331 transitions, 826 flow [2022-07-22 21:40:51,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 310.75) internal successors, (2486), 8 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:51,606 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:51,606 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:51,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 21:40:51,607 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:51,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:51,607 INFO L85 PathProgramCache]: Analyzing trace with hash 400042452, now seen corresponding path program 1 times [2022-07-22 21:40:51,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:51,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115379657] [2022-07-22 21:40:51,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:51,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:51,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:40:51,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:51,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115379657] [2022-07-22 21:40:51,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115379657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:40:51,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:40:51,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:40:51,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322486034] [2022-07-22 21:40:51,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:51,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:40:51,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:51,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:40:51,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:40:51,678 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 349 [2022-07-22 21:40:51,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 331 transitions, 826 flow. Second operand has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:51,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:51,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 349 [2022-07-22 21:40:51,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:52,256 INFO L129 PetriNetUnfolder]: 560/3302 cut-off events. [2022-07-22 21:40:52,256 INFO L130 PetriNetUnfolder]: For 2822/2906 co-relation queries the response was YES. [2022-07-22 21:40:52,293 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5970 conditions, 3302 events. 560/3302 cut-off events. For 2822/2906 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 29503 event pairs, 318 based on Foata normal form. 7/2795 useless extension candidates. Maximal degree in co-relation 5917. Up to 427 conditions per place. [2022-07-22 21:40:52,303 INFO L132 encePairwiseOnDemand]: 345/349 looper letters, 37 selfloop transitions, 2 changer transitions 4/348 dead transitions. [2022-07-22 21:40:52,303 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 348 transitions, 949 flow [2022-07-22 21:40:52,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 21:40:52,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-22 21:40:52,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1283 transitions. [2022-07-22 21:40:52,305 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.919054441260745 [2022-07-22 21:40:52,306 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1283 transitions. [2022-07-22 21:40:52,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1283 transitions. [2022-07-22 21:40:52,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:52,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1283 transitions. [2022-07-22 21:40:52,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 320.75) internal successors, (1283), 4 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:52,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 349.0) internal successors, (1745), 5 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:52,310 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 349.0) internal successors, (1745), 5 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:52,310 INFO L186 Difference]: Start difference. First operand has 380 places, 331 transitions, 826 flow. Second operand 4 states and 1283 transitions. [2022-07-22 21:40:52,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 348 transitions, 949 flow [2022-07-22 21:40:52,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 348 transitions, 921 flow, removed 10 selfloop flow, removed 13 redundant places. [2022-07-22 21:40:52,335 INFO L242 Difference]: Finished difference. Result has 360 places, 330 transitions, 803 flow [2022-07-22 21:40:52,336 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=803, PETRI_PLACES=360, PETRI_TRANSITIONS=330} [2022-07-22 21:40:52,336 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 41 predicate places. [2022-07-22 21:40:52,336 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 330 transitions, 803 flow [2022-07-22 21:40:52,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:52,337 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:52,337 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:52,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 21:40:52,338 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:52,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:52,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1521460524, now seen corresponding path program 2 times [2022-07-22 21:40:52,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:52,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795839949] [2022-07-22 21:40:52,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:52,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:52,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:40:52,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:52,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795839949] [2022-07-22 21:40:52,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795839949] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:40:52,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:40:52,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:40:52,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765864170] [2022-07-22 21:40:52,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:52,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:40:52,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:52,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:40:52,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:40:52,406 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 349 [2022-07-22 21:40:52,407 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 330 transitions, 803 flow. Second operand has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:52,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:52,408 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 349 [2022-07-22 21:40:52,408 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:53,046 INFO L129 PetriNetUnfolder]: 477/3426 cut-off events. [2022-07-22 21:40:53,047 INFO L130 PetriNetUnfolder]: For 1652/1735 co-relation queries the response was YES. [2022-07-22 21:40:53,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6146 conditions, 3426 events. 477/3426 cut-off events. For 1652/1735 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 32885 event pairs, 140 based on Foata normal form. 16/3146 useless extension candidates. Maximal degree in co-relation 5362. Up to 314 conditions per place. [2022-07-22 21:40:53,087 INFO L132 encePairwiseOnDemand]: 341/349 looper letters, 47 selfloop transitions, 8 changer transitions 1/361 dead transitions. [2022-07-22 21:40:53,087 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 361 transitions, 1003 flow [2022-07-22 21:40:53,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:40:53,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:40:53,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1607 transitions. [2022-07-22 21:40:53,090 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9209169054441261 [2022-07-22 21:40:53,090 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1607 transitions. [2022-07-22 21:40:53,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1607 transitions. [2022-07-22 21:40:53,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:53,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1607 transitions. [2022-07-22 21:40:53,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 321.4) internal successors, (1607), 5 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:53,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:53,096 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:53,096 INFO L186 Difference]: Start difference. First operand has 360 places, 330 transitions, 803 flow. Second operand 5 states and 1607 transitions. [2022-07-22 21:40:53,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 361 transitions, 1003 flow [2022-07-22 21:40:53,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 361 transitions, 997 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-07-22 21:40:53,113 INFO L242 Difference]: Finished difference. Result has 360 places, 337 transitions, 864 flow [2022-07-22 21:40:53,113 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=864, PETRI_PLACES=360, PETRI_TRANSITIONS=337} [2022-07-22 21:40:53,114 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 41 predicate places. [2022-07-22 21:40:53,114 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 337 transitions, 864 flow [2022-07-22 21:40:53,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:53,114 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:53,115 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:53,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 21:40:53,115 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:53,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:53,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1411265022, now seen corresponding path program 1 times [2022-07-22 21:40:53,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:53,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903816481] [2022-07-22 21:40:53,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:53,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:53,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:40:53,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:53,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903816481] [2022-07-22 21:40:53,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903816481] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:40:53,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:40:53,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:40:53,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635259700] [2022-07-22 21:40:53,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:53,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:40:53,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:53,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:40:53,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:40:53,186 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 349 [2022-07-22 21:40:53,187 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 337 transitions, 864 flow. Second operand has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:53,187 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:53,188 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 349 [2022-07-22 21:40:53,188 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:54,110 INFO L129 PetriNetUnfolder]: 607/4578 cut-off events. [2022-07-22 21:40:54,111 INFO L130 PetriNetUnfolder]: For 3547/3607 co-relation queries the response was YES. [2022-07-22 21:40:54,150 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8673 conditions, 4578 events. 607/4578 cut-off events. For 3547/3607 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 46219 event pairs, 313 based on Foata normal form. 27/4256 useless extension candidates. Maximal degree in co-relation 7277. Up to 391 conditions per place. [2022-07-22 21:40:54,165 INFO L132 encePairwiseOnDemand]: 339/349 looper letters, 55 selfloop transitions, 7 changer transitions 7/374 dead transitions. [2022-07-22 21:40:54,166 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 374 transitions, 1151 flow [2022-07-22 21:40:54,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:40:54,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:40:54,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1613 transitions. [2022-07-22 21:40:54,169 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9243553008595988 [2022-07-22 21:40:54,169 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1613 transitions. [2022-07-22 21:40:54,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1613 transitions. [2022-07-22 21:40:54,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:54,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1613 transitions. [2022-07-22 21:40:54,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 322.6) internal successors, (1613), 5 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:54,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:54,176 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:54,176 INFO L186 Difference]: Start difference. First operand has 360 places, 337 transitions, 864 flow. Second operand 5 states and 1613 transitions. [2022-07-22 21:40:54,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 374 transitions, 1151 flow [2022-07-22 21:40:54,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 374 transitions, 1135 flow, removed 8 selfloop flow, removed 0 redundant places. [2022-07-22 21:40:54,198 INFO L242 Difference]: Finished difference. Result has 367 places, 341 transitions, 916 flow [2022-07-22 21:40:54,199 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=916, PETRI_PLACES=367, PETRI_TRANSITIONS=341} [2022-07-22 21:40:54,200 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 48 predicate places. [2022-07-22 21:40:54,200 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 341 transitions, 916 flow [2022-07-22 21:40:54,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:54,201 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:54,201 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:54,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 21:40:54,201 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:54,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:54,202 INFO L85 PathProgramCache]: Analyzing trace with hash 371624586, now seen corresponding path program 3 times [2022-07-22 21:40:54,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:54,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578521660] [2022-07-22 21:40:54,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:54,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:54,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:40:54,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:54,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578521660] [2022-07-22 21:40:54,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578521660] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:40:54,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:40:54,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:40:54,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059490314] [2022-07-22 21:40:54,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:54,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:40:54,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:54,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:40:54,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:40:54,272 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 349 [2022-07-22 21:40:54,273 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 341 transitions, 916 flow. Second operand has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:54,273 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:54,273 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 349 [2022-07-22 21:40:54,273 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:55,148 INFO L129 PetriNetUnfolder]: 599/4987 cut-off events. [2022-07-22 21:40:55,149 INFO L130 PetriNetUnfolder]: For 3816/4138 co-relation queries the response was YES. [2022-07-22 21:40:55,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9182 conditions, 4987 events. 599/4987 cut-off events. For 3816/4138 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 51532 event pairs, 345 based on Foata normal form. 38/4582 useless extension candidates. Maximal degree in co-relation 7914. Up to 392 conditions per place. [2022-07-22 21:40:55,210 INFO L132 encePairwiseOnDemand]: 339/349 looper letters, 58 selfloop transitions, 15 changer transitions 1/379 dead transitions. [2022-07-22 21:40:55,211 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 379 transitions, 1252 flow [2022-07-22 21:40:55,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:40:55,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:40:55,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1613 transitions. [2022-07-22 21:40:55,213 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9243553008595988 [2022-07-22 21:40:55,213 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1613 transitions. [2022-07-22 21:40:55,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1613 transitions. [2022-07-22 21:40:55,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:55,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1613 transitions. [2022-07-22 21:40:55,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 322.6) internal successors, (1613), 5 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:55,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:55,219 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:55,219 INFO L186 Difference]: Start difference. First operand has 367 places, 341 transitions, 916 flow. Second operand 5 states and 1613 transitions. [2022-07-22 21:40:55,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 379 transitions, 1252 flow [2022-07-22 21:40:55,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 379 transitions, 1230 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-07-22 21:40:55,239 INFO L242 Difference]: Finished difference. Result has 371 places, 352 transitions, 1061 flow [2022-07-22 21:40:55,240 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1061, PETRI_PLACES=371, PETRI_TRANSITIONS=352} [2022-07-22 21:40:55,240 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 52 predicate places. [2022-07-22 21:40:55,241 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 352 transitions, 1061 flow [2022-07-22 21:40:55,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:55,241 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:55,241 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:55,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 21:40:55,242 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:55,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:55,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1006346540, now seen corresponding path program 4 times [2022-07-22 21:40:55,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:55,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145897685] [2022-07-22 21:40:55,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:55,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:55,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:40:55,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:55,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145897685] [2022-07-22 21:40:55,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145897685] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:40:55,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:40:55,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:40:55,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201961504] [2022-07-22 21:40:55,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:55,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:40:55,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:55,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:40:55,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:40:55,311 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 349 [2022-07-22 21:40:55,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 352 transitions, 1061 flow. Second operand has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:55,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:55,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 349 [2022-07-22 21:40:55,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:56,080 INFO L129 PetriNetUnfolder]: 469/4274 cut-off events. [2022-07-22 21:40:56,080 INFO L130 PetriNetUnfolder]: For 3905/3956 co-relation queries the response was YES. [2022-07-22 21:40:56,116 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8613 conditions, 4274 events. 469/4274 cut-off events. For 3905/3956 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 44084 event pairs, 209 based on Foata normal form. 19/4056 useless extension candidates. Maximal degree in co-relation 8552. Up to 374 conditions per place. [2022-07-22 21:40:56,126 INFO L132 encePairwiseOnDemand]: 341/349 looper letters, 57 selfloop transitions, 14 changer transitions 2/378 dead transitions. [2022-07-22 21:40:56,127 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 378 transitions, 1355 flow [2022-07-22 21:40:56,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:40:56,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:40:56,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1603 transitions. [2022-07-22 21:40:56,130 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9186246418338109 [2022-07-22 21:40:56,130 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1603 transitions. [2022-07-22 21:40:56,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1603 transitions. [2022-07-22 21:40:56,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:56,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1603 transitions. [2022-07-22 21:40:56,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 320.6) internal successors, (1603), 5 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:56,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:56,136 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:56,136 INFO L186 Difference]: Start difference. First operand has 371 places, 352 transitions, 1061 flow. Second operand 5 states and 1603 transitions. [2022-07-22 21:40:56,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 378 transitions, 1355 flow [2022-07-22 21:40:56,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 378 transitions, 1345 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-07-22 21:40:56,161 INFO L242 Difference]: Finished difference. Result has 377 places, 358 transitions, 1160 flow [2022-07-22 21:40:56,161 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=1027, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1160, PETRI_PLACES=377, PETRI_TRANSITIONS=358} [2022-07-22 21:40:56,162 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 58 predicate places. [2022-07-22 21:40:56,162 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 358 transitions, 1160 flow [2022-07-22 21:40:56,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:56,163 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:56,163 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:56,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 21:40:56,164 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:56,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:56,165 INFO L85 PathProgramCache]: Analyzing trace with hash 2034932952, now seen corresponding path program 2 times [2022-07-22 21:40:56,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:56,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973376834] [2022-07-22 21:40:56,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:56,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:56,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:40:56,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:56,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973376834] [2022-07-22 21:40:56,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973376834] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:40:56,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:40:56,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:40:56,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605107330] [2022-07-22 21:40:56,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:56,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:40:56,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:56,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:40:56,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:40:56,239 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 349 [2022-07-22 21:40:56,240 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 358 transitions, 1160 flow. Second operand has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:56,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:56,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 349 [2022-07-22 21:40:56,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:56,996 INFO L129 PetriNetUnfolder]: 461/4249 cut-off events. [2022-07-22 21:40:56,996 INFO L130 PetriNetUnfolder]: For 4915/5251 co-relation queries the response was YES. [2022-07-22 21:40:57,026 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8640 conditions, 4249 events. 461/4249 cut-off events. For 4915/5251 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 43569 event pairs, 206 based on Foata normal form. 13/3951 useless extension candidates. Maximal degree in co-relation 7496. Up to 281 conditions per place. [2022-07-22 21:40:57,038 INFO L132 encePairwiseOnDemand]: 340/349 looper letters, 68 selfloop transitions, 19 changer transitions 4/396 dead transitions. [2022-07-22 21:40:57,039 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 396 transitions, 1658 flow [2022-07-22 21:40:57,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:40:57,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:40:57,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1608 transitions. [2022-07-22 21:40:57,041 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9214899713467049 [2022-07-22 21:40:57,041 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1608 transitions. [2022-07-22 21:40:57,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1608 transitions. [2022-07-22 21:40:57,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:57,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1608 transitions. [2022-07-22 21:40:57,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 321.6) internal successors, (1608), 5 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:57,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:57,046 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:57,046 INFO L186 Difference]: Start difference. First operand has 377 places, 358 transitions, 1160 flow. Second operand 5 states and 1608 transitions. [2022-07-22 21:40:57,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 396 transitions, 1658 flow [2022-07-22 21:40:57,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 396 transitions, 1654 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-07-22 21:40:57,071 INFO L242 Difference]: Finished difference. Result has 385 places, 369 transitions, 1358 flow [2022-07-22 21:40:57,072 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=1156, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1358, PETRI_PLACES=385, PETRI_TRANSITIONS=369} [2022-07-22 21:40:57,072 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 66 predicate places. [2022-07-22 21:40:57,073 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 369 transitions, 1358 flow [2022-07-22 21:40:57,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:57,073 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:57,074 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:57,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 21:40:57,074 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:57,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:57,074 INFO L85 PathProgramCache]: Analyzing trace with hash -2016153488, now seen corresponding path program 3 times [2022-07-22 21:40:57,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:57,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890309669] [2022-07-22 21:40:57,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:57,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:57,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:40:57,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:57,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890309669] [2022-07-22 21:40:57,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890309669] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:40:57,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:40:57,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:40:57,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037397852] [2022-07-22 21:40:57,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:57,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:40:57,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:57,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:40:57,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:40:57,134 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 349 [2022-07-22 21:40:57,135 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 369 transitions, 1358 flow. Second operand has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:57,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:57,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 349 [2022-07-22 21:40:57,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:57,967 INFO L129 PetriNetUnfolder]: 458/4128 cut-off events. [2022-07-22 21:40:57,967 INFO L130 PetriNetUnfolder]: For 6261/6588 co-relation queries the response was YES. [2022-07-22 21:40:58,013 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8974 conditions, 4128 events. 458/4128 cut-off events. For 6261/6588 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 41986 event pairs, 214 based on Foata normal form. 11/3848 useless extension candidates. Maximal degree in co-relation 7738. Up to 291 conditions per place. [2022-07-22 21:40:58,026 INFO L132 encePairwiseOnDemand]: 341/349 looper letters, 71 selfloop transitions, 23 changer transitions 1/400 dead transitions. [2022-07-22 21:40:58,027 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 400 transitions, 1805 flow [2022-07-22 21:40:58,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:40:58,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:40:58,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1604 transitions. [2022-07-22 21:40:58,029 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9191977077363896 [2022-07-22 21:40:58,030 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1604 transitions. [2022-07-22 21:40:58,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1604 transitions. [2022-07-22 21:40:58,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:58,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1604 transitions. [2022-07-22 21:40:58,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 320.8) internal successors, (1604), 5 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:58,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:58,036 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:58,036 INFO L186 Difference]: Start difference. First operand has 385 places, 369 transitions, 1358 flow. Second operand 5 states and 1604 transitions. [2022-07-22 21:40:58,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 400 transitions, 1805 flow [2022-07-22 21:40:58,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 400 transitions, 1789 flow, removed 8 selfloop flow, removed 0 redundant places. [2022-07-22 21:40:58,069 INFO L242 Difference]: Finished difference. Result has 392 places, 380 transitions, 1564 flow [2022-07-22 21:40:58,069 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=1346, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1564, PETRI_PLACES=392, PETRI_TRANSITIONS=380} [2022-07-22 21:40:58,070 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 73 predicate places. [2022-07-22 21:40:58,070 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 380 transitions, 1564 flow [2022-07-22 21:40:58,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:58,071 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:58,071 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:58,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 21:40:58,071 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:58,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:58,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1149123476, now seen corresponding path program 4 times [2022-07-22 21:40:58,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:58,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094340017] [2022-07-22 21:40:58,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:58,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:58,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:40:58,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:58,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094340017] [2022-07-22 21:40:58,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094340017] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:40:58,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:40:58,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:40:58,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835284622] [2022-07-22 21:40:58,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:58,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:40:58,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:58,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:40:58,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:40:58,128 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 349 [2022-07-22 21:40:58,129 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 380 transitions, 1564 flow. Second operand has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:58,129 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:58,129 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 349 [2022-07-22 21:40:58,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:58,830 INFO L129 PetriNetUnfolder]: 527/4803 cut-off events. [2022-07-22 21:40:58,831 INFO L130 PetriNetUnfolder]: For 9000/9673 co-relation queries the response was YES. [2022-07-22 21:40:58,878 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10038 conditions, 4803 events. 527/4803 cut-off events. For 9000/9673 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 49429 event pairs, 342 based on Foata normal form. 8/4432 useless extension candidates. Maximal degree in co-relation 8654. Up to 547 conditions per place. [2022-07-22 21:40:58,890 INFO L132 encePairwiseOnDemand]: 346/349 looper letters, 71 selfloop transitions, 4 changer transitions 9/389 dead transitions. [2022-07-22 21:40:58,890 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 389 transitions, 1806 flow [2022-07-22 21:40:58,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 21:40:58,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-22 21:40:58,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1277 transitions. [2022-07-22 21:40:58,893 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.914756446991404 [2022-07-22 21:40:58,893 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1277 transitions. [2022-07-22 21:40:58,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1277 transitions. [2022-07-22 21:40:58,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:58,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1277 transitions. [2022-07-22 21:40:58,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 319.25) internal successors, (1277), 4 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:58,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 349.0) internal successors, (1745), 5 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:58,898 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 349.0) internal successors, (1745), 5 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:58,898 INFO L186 Difference]: Start difference. First operand has 392 places, 380 transitions, 1564 flow. Second operand 4 states and 1277 transitions. [2022-07-22 21:40:58,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 389 transitions, 1806 flow [2022-07-22 21:40:58,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 389 transitions, 1786 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-07-22 21:40:58,931 INFO L242 Difference]: Finished difference. Result has 397 places, 374 transitions, 1470 flow [2022-07-22 21:40:58,931 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=1544, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1470, PETRI_PLACES=397, PETRI_TRANSITIONS=374} [2022-07-22 21:40:58,932 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 78 predicate places. [2022-07-22 21:40:58,932 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 374 transitions, 1470 flow [2022-07-22 21:40:58,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:58,932 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:58,933 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:58,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 21:40:58,933 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:58,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:58,934 INFO L85 PathProgramCache]: Analyzing trace with hash -263194964, now seen corresponding path program 5 times [2022-07-22 21:40:58,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:58,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299843400] [2022-07-22 21:40:58,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:58,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:58,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:40:58,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:58,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299843400] [2022-07-22 21:40:58,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299843400] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:40:58,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:40:58,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:40:58,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43048618] [2022-07-22 21:40:58,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:58,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:40:58,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:58,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:40:58,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:40:58,991 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 349 [2022-07-22 21:40:58,992 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 374 transitions, 1470 flow. Second operand has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:58,992 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:58,992 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 349 [2022-07-22 21:40:58,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:40:59,675 INFO L129 PetriNetUnfolder]: 493/4368 cut-off events. [2022-07-22 21:40:59,675 INFO L130 PetriNetUnfolder]: For 9138/9904 co-relation queries the response was YES. [2022-07-22 21:40:59,711 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9056 conditions, 4368 events. 493/4368 cut-off events. For 9138/9904 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 43404 event pairs, 303 based on Foata normal form. 10/4017 useless extension candidates. Maximal degree in co-relation 9008. Up to 474 conditions per place. [2022-07-22 21:40:59,717 INFO L132 encePairwiseOnDemand]: 346/349 looper letters, 69 selfloop transitions, 6 changer transitions 4/384 dead transitions. [2022-07-22 21:40:59,717 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 384 transitions, 1697 flow [2022-07-22 21:40:59,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 21:40:59,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-22 21:40:59,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1279 transitions. [2022-07-22 21:40:59,720 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.916189111747851 [2022-07-22 21:40:59,720 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1279 transitions. [2022-07-22 21:40:59,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1279 transitions. [2022-07-22 21:40:59,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:40:59,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1279 transitions. [2022-07-22 21:40:59,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 319.75) internal successors, (1279), 4 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:59,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 349.0) internal successors, (1745), 5 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:59,725 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 349.0) internal successors, (1745), 5 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:59,725 INFO L186 Difference]: Start difference. First operand has 397 places, 374 transitions, 1470 flow. Second operand 4 states and 1279 transitions. [2022-07-22 21:40:59,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 384 transitions, 1697 flow [2022-07-22 21:40:59,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 384 transitions, 1690 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-22 21:40:59,754 INFO L242 Difference]: Finished difference. Result has 399 places, 371 transitions, 1438 flow [2022-07-22 21:40:59,754 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=1445, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1438, PETRI_PLACES=399, PETRI_TRANSITIONS=371} [2022-07-22 21:40:59,755 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 80 predicate places. [2022-07-22 21:40:59,755 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 371 transitions, 1438 flow [2022-07-22 21:40:59,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:59,756 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:40:59,756 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:40:59,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 21:40:59,757 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:40:59,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:40:59,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1786200662, now seen corresponding path program 5 times [2022-07-22 21:40:59,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:40:59,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297657892] [2022-07-22 21:40:59,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:40:59,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:40:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:40:59,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:40:59,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:40:59,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297657892] [2022-07-22 21:40:59,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297657892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:40:59,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:40:59,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:40:59,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583278813] [2022-07-22 21:40:59,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:40:59,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:40:59,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:40:59,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:40:59,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:40:59,818 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 349 [2022-07-22 21:40:59,819 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 371 transitions, 1438 flow. Second operand has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:40:59,819 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:40:59,819 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 349 [2022-07-22 21:40:59,819 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:00,408 INFO L129 PetriNetUnfolder]: 482/4226 cut-off events. [2022-07-22 21:41:00,409 INFO L130 PetriNetUnfolder]: For 9003/9739 co-relation queries the response was YES. [2022-07-22 21:41:00,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8795 conditions, 4226 events. 482/4226 cut-off events. For 9003/9739 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 41360 event pairs, 302 based on Foata normal form. 7/3882 useless extension candidates. Maximal degree in co-relation 8746. Up to 476 conditions per place. [2022-07-22 21:41:00,458 INFO L132 encePairwiseOnDemand]: 346/349 looper letters, 63 selfloop transitions, 6 changer transitions 2/376 dead transitions. [2022-07-22 21:41:00,459 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 376 transitions, 1600 flow [2022-07-22 21:41:00,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 21:41:00,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-22 21:41:00,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1277 transitions. [2022-07-22 21:41:00,460 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.914756446991404 [2022-07-22 21:41:00,460 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1277 transitions. [2022-07-22 21:41:00,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1277 transitions. [2022-07-22 21:41:00,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:00,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1277 transitions. [2022-07-22 21:41:00,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 319.25) internal successors, (1277), 4 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:00,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 349.0) internal successors, (1745), 5 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:00,465 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 349.0) internal successors, (1745), 5 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:00,465 INFO L186 Difference]: Start difference. First operand has 399 places, 371 transitions, 1438 flow. Second operand 4 states and 1277 transitions. [2022-07-22 21:41:00,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 376 transitions, 1600 flow [2022-07-22 21:41:00,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 376 transitions, 1584 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-07-22 21:41:00,496 INFO L242 Difference]: Finished difference. Result has 400 places, 367 transitions, 1381 flow [2022-07-22 21:41:00,496 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=1397, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1381, PETRI_PLACES=400, PETRI_TRANSITIONS=367} [2022-07-22 21:41:00,496 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 81 predicate places. [2022-07-22 21:41:00,497 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 367 transitions, 1381 flow [2022-07-22 21:41:00,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:00,497 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:00,497 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:00,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 21:41:00,498 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:00,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:00,498 INFO L85 PathProgramCache]: Analyzing trace with hash 814738280, now seen corresponding path program 1 times [2022-07-22 21:41:00,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:00,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489024233] [2022-07-22 21:41:00,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:00,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:00,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:00,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:00,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489024233] [2022-07-22 21:41:00,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489024233] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:00,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:00,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:41:00,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557345460] [2022-07-22 21:41:00,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:00,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:41:00,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:00,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:41:00,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:41:00,553 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 349 [2022-07-22 21:41:00,554 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 367 transitions, 1381 flow. Second operand has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:00,554 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:00,554 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 349 [2022-07-22 21:41:00,554 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:01,322 INFO L129 PetriNetUnfolder]: 510/4185 cut-off events. [2022-07-22 21:41:01,322 INFO L130 PetriNetUnfolder]: For 8890/9034 co-relation queries the response was YES. [2022-07-22 21:41:01,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9060 conditions, 4185 events. 510/4185 cut-off events. For 8890/9034 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 41160 event pairs, 153 based on Foata normal form. 20/3909 useless extension candidates. Maximal degree in co-relation 9011. Up to 408 conditions per place. [2022-07-22 21:41:01,370 INFO L132 encePairwiseOnDemand]: 341/349 looper letters, 87 selfloop transitions, 16 changer transitions 14/422 dead transitions. [2022-07-22 21:41:01,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 422 transitions, 2240 flow [2022-07-22 21:41:01,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:41:01,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:41:01,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1608 transitions. [2022-07-22 21:41:01,374 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9214899713467049 [2022-07-22 21:41:01,374 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1608 transitions. [2022-07-22 21:41:01,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1608 transitions. [2022-07-22 21:41:01,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:01,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1608 transitions. [2022-07-22 21:41:01,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 321.6) internal successors, (1608), 5 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:01,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:01,380 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:01,381 INFO L186 Difference]: Start difference. First operand has 400 places, 367 transitions, 1381 flow. Second operand 5 states and 1608 transitions. [2022-07-22 21:41:01,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 422 transitions, 2240 flow [2022-07-22 21:41:01,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 422 transitions, 2219 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-07-22 21:41:01,415 INFO L242 Difference]: Finished difference. Result has 405 places, 377 transitions, 1564 flow [2022-07-22 21:41:01,416 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1564, PETRI_PLACES=405, PETRI_TRANSITIONS=377} [2022-07-22 21:41:01,416 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 86 predicate places. [2022-07-22 21:41:01,417 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 377 transitions, 1564 flow [2022-07-22 21:41:01,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:01,417 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:01,417 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:01,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 21:41:01,418 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:01,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:01,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1858173424, now seen corresponding path program 2 times [2022-07-22 21:41:01,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:01,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503865983] [2022-07-22 21:41:01,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:01,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:01,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:01,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:01,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503865983] [2022-07-22 21:41:01,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503865983] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:01,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:01,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:41:01,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628869930] [2022-07-22 21:41:01,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:01,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:41:01,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:01,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:41:01,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:41:01,483 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 349 [2022-07-22 21:41:01,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 377 transitions, 1564 flow. Second operand has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:01,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:01,485 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 349 [2022-07-22 21:41:01,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:02,314 INFO L129 PetriNetUnfolder]: 507/4108 cut-off events. [2022-07-22 21:41:02,315 INFO L130 PetriNetUnfolder]: For 10654/11305 co-relation queries the response was YES. [2022-07-22 21:41:02,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9086 conditions, 4108 events. 507/4108 cut-off events. For 10654/11305 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 39872 event pairs, 171 based on Foata normal form. 30/3817 useless extension candidates. Maximal degree in co-relation 9034. Up to 361 conditions per place. [2022-07-22 21:41:02,391 INFO L132 encePairwiseOnDemand]: 340/349 looper letters, 81 selfloop transitions, 25 changer transitions 6/417 dead transitions. [2022-07-22 21:41:02,392 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 417 transitions, 2265 flow [2022-07-22 21:41:02,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:41:02,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:41:02,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1606 transitions. [2022-07-22 21:41:02,395 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9203438395415473 [2022-07-22 21:41:02,395 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1606 transitions. [2022-07-22 21:41:02,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1606 transitions. [2022-07-22 21:41:02,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:02,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1606 transitions. [2022-07-22 21:41:02,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 321.2) internal successors, (1606), 5 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:02,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:02,401 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:02,401 INFO L186 Difference]: Start difference. First operand has 405 places, 377 transitions, 1564 flow. Second operand 5 states and 1606 transitions. [2022-07-22 21:41:02,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 417 transitions, 2265 flow [2022-07-22 21:41:02,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 417 transitions, 2239 flow, removed 13 selfloop flow, removed 0 redundant places. [2022-07-22 21:41:02,440 INFO L242 Difference]: Finished difference. Result has 413 places, 387 transitions, 1796 flow [2022-07-22 21:41:02,440 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1796, PETRI_PLACES=413, PETRI_TRANSITIONS=387} [2022-07-22 21:41:02,441 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 94 predicate places. [2022-07-22 21:41:02,441 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 387 transitions, 1796 flow [2022-07-22 21:41:02,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:02,441 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:02,442 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:02,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 21:41:02,442 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:02,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:02,442 INFO L85 PathProgramCache]: Analyzing trace with hash 757831568, now seen corresponding path program 1 times [2022-07-22 21:41:02,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:02,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377154029] [2022-07-22 21:41:02,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:02,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:02,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:02,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:02,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377154029] [2022-07-22 21:41:02,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377154029] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:02,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:02,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:41:02,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442832709] [2022-07-22 21:41:02,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:02,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:41:02,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:02,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:41:02,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:41:02,608 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 349 [2022-07-22 21:41:02,610 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 387 transitions, 1796 flow. Second operand has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:02,610 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:02,611 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 349 [2022-07-22 21:41:02,611 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:04,336 INFO L129 PetriNetUnfolder]: 2284/7848 cut-off events. [2022-07-22 21:41:04,336 INFO L130 PetriNetUnfolder]: For 9982/10185 co-relation queries the response was YES. [2022-07-22 21:41:04,395 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17939 conditions, 7848 events. 2284/7848 cut-off events. For 9982/10185 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 82892 event pairs, 1434 based on Foata normal form. 6/7018 useless extension candidates. Maximal degree in co-relation 17883. Up to 2945 conditions per place. [2022-07-22 21:41:04,412 INFO L132 encePairwiseOnDemand]: 336/349 looper letters, 80 selfloop transitions, 30 changer transitions 28/491 dead transitions. [2022-07-22 21:41:04,412 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 491 transitions, 2451 flow [2022-07-22 21:41:04,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-22 21:41:04,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-22 21:41:04,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 7383 transitions. [2022-07-22 21:41:04,419 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8814469914040115 [2022-07-22 21:41:04,419 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 7383 transitions. [2022-07-22 21:41:04,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 7383 transitions. [2022-07-22 21:41:04,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:04,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 7383 transitions. [2022-07-22 21:41:04,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 307.625) internal successors, (7383), 24 states have internal predecessors, (7383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:04,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 349.0) internal successors, (8725), 25 states have internal predecessors, (8725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:04,436 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 349.0) internal successors, (8725), 25 states have internal predecessors, (8725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:04,436 INFO L186 Difference]: Start difference. First operand has 413 places, 387 transitions, 1796 flow. Second operand 24 states and 7383 transitions. [2022-07-22 21:41:04,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 491 transitions, 2451 flow [2022-07-22 21:41:04,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 491 transitions, 2429 flow, removed 11 selfloop flow, removed 0 redundant places. [2022-07-22 21:41:04,476 INFO L242 Difference]: Finished difference. Result has 456 places, 416 transitions, 2064 flow [2022-07-22 21:41:04,476 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=1774, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2064, PETRI_PLACES=456, PETRI_TRANSITIONS=416} [2022-07-22 21:41:04,476 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 137 predicate places. [2022-07-22 21:41:04,477 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 416 transitions, 2064 flow [2022-07-22 21:41:04,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:04,477 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:04,478 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:04,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 21:41:04,478 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:04,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:04,478 INFO L85 PathProgramCache]: Analyzing trace with hash 683846268, now seen corresponding path program 1 times [2022-07-22 21:41:04,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:04,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273111598] [2022-07-22 21:41:04,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:04,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:04,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:04,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:04,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273111598] [2022-07-22 21:41:04,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273111598] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:04,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:04,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:41:04,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274074370] [2022-07-22 21:41:04,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:04,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:41:04,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:04,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:41:04,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:41:04,551 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 349 [2022-07-22 21:41:04,552 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 416 transitions, 2064 flow. Second operand has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:04,552 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:04,552 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 349 [2022-07-22 21:41:04,552 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:05,190 INFO L129 PetriNetUnfolder]: 540/3950 cut-off events. [2022-07-22 21:41:05,190 INFO L130 PetriNetUnfolder]: For 13363/13419 co-relation queries the response was YES. [2022-07-22 21:41:05,247 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11058 conditions, 3950 events. 540/3950 cut-off events. For 13363/13419 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 38341 event pairs, 147 based on Foata normal form. 39/3743 useless extension candidates. Maximal degree in co-relation 10981. Up to 420 conditions per place. [2022-07-22 21:41:05,256 INFO L132 encePairwiseOnDemand]: 341/349 looper letters, 90 selfloop transitions, 22 changer transitions 3/449 dead transitions. [2022-07-22 21:41:05,256 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 449 transitions, 2629 flow [2022-07-22 21:41:05,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:41:05,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:41:05,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1605 transitions. [2022-07-22 21:41:05,259 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9197707736389685 [2022-07-22 21:41:05,259 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1605 transitions. [2022-07-22 21:41:05,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1605 transitions. [2022-07-22 21:41:05,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:05,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1605 transitions. [2022-07-22 21:41:05,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:05,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:05,263 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:05,263 INFO L186 Difference]: Start difference. First operand has 456 places, 416 transitions, 2064 flow. Second operand 5 states and 1605 transitions. [2022-07-22 21:41:05,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 449 transitions, 2629 flow [2022-07-22 21:41:05,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 449 transitions, 2543 flow, removed 43 selfloop flow, removed 2 redundant places. [2022-07-22 21:41:05,334 INFO L242 Difference]: Finished difference. Result has 460 places, 425 transitions, 2172 flow [2022-07-22 21:41:05,335 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=1931, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2172, PETRI_PLACES=460, PETRI_TRANSITIONS=425} [2022-07-22 21:41:05,335 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 141 predicate places. [2022-07-22 21:41:05,336 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 425 transitions, 2172 flow [2022-07-22 21:41:05,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:05,336 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:05,336 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:05,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 21:41:05,337 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:05,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:05,337 INFO L85 PathProgramCache]: Analyzing trace with hash -866903354, now seen corresponding path program 2 times [2022-07-22 21:41:05,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:05,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567198853] [2022-07-22 21:41:05,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:05,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:05,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:05,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:05,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567198853] [2022-07-22 21:41:05,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567198853] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:05,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:05,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:41:05,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598039165] [2022-07-22 21:41:05,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:05,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:41:05,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:05,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:41:05,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:41:05,468 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 349 [2022-07-22 21:41:05,470 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 425 transitions, 2172 flow. Second operand has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:05,470 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:05,470 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 349 [2022-07-22 21:41:05,470 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:07,244 INFO L129 PetriNetUnfolder]: 2466/8693 cut-off events. [2022-07-22 21:41:07,245 INFO L130 PetriNetUnfolder]: For 25215/25728 co-relation queries the response was YES. [2022-07-22 21:41:07,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26026 conditions, 8693 events. 2466/8693 cut-off events. For 25215/25728 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 91726 event pairs, 1481 based on Foata normal form. 8/7802 useless extension candidates. Maximal degree in co-relation 25947. Up to 2990 conditions per place. [2022-07-22 21:41:07,368 INFO L132 encePairwiseOnDemand]: 336/349 looper letters, 90 selfloop transitions, 36 changer transitions 22/510 dead transitions. [2022-07-22 21:41:07,369 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 510 transitions, 3078 flow [2022-07-22 21:41:07,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 21:41:07,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-22 21:41:07,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 6152 transitions. [2022-07-22 21:41:07,372 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8813753581661891 [2022-07-22 21:41:07,372 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 6152 transitions. [2022-07-22 21:41:07,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 6152 transitions. [2022-07-22 21:41:07,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:07,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 6152 transitions. [2022-07-22 21:41:07,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 307.6) internal successors, (6152), 20 states have internal predecessors, (6152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:07,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 349.0) internal successors, (7329), 21 states have internal predecessors, (7329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:07,384 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 349.0) internal successors, (7329), 21 states have internal predecessors, (7329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:07,384 INFO L186 Difference]: Start difference. First operand has 460 places, 425 transitions, 2172 flow. Second operand 20 states and 6152 transitions. [2022-07-22 21:41:07,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 510 transitions, 3078 flow [2022-07-22 21:41:07,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 510 transitions, 3028 flow, removed 17 selfloop flow, removed 2 redundant places. [2022-07-22 21:41:07,517 INFO L242 Difference]: Finished difference. Result has 492 places, 458 transitions, 2580 flow [2022-07-22 21:41:07,517 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=2122, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2580, PETRI_PLACES=492, PETRI_TRANSITIONS=458} [2022-07-22 21:41:07,517 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 173 predicate places. [2022-07-22 21:41:07,518 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 458 transitions, 2580 flow [2022-07-22 21:41:07,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:07,518 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:07,519 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:07,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 21:41:07,519 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:07,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:07,519 INFO L85 PathProgramCache]: Analyzing trace with hash -151826670, now seen corresponding path program 3 times [2022-07-22 21:41:07,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:07,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386051923] [2022-07-22 21:41:07,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:07,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:07,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:07,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:07,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386051923] [2022-07-22 21:41:07,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386051923] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:07,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:07,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:41:07,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18018382] [2022-07-22 21:41:07,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:07,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:41:07,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:07,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:41:07,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:41:07,661 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 349 [2022-07-22 21:41:07,663 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 458 transitions, 2580 flow. Second operand has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:07,663 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:07,663 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 349 [2022-07-22 21:41:07,663 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:09,692 INFO L129 PetriNetUnfolder]: 2524/8747 cut-off events. [2022-07-22 21:41:09,693 INFO L130 PetriNetUnfolder]: For 48143/48364 co-relation queries the response was YES. [2022-07-22 21:41:09,796 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31487 conditions, 8747 events. 2524/8747 cut-off events. For 48143/48364 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 93601 event pairs, 1506 based on Foata normal form. 10/7851 useless extension candidates. Maximal degree in co-relation 31394. Up to 3344 conditions per place. [2022-07-22 21:41:09,822 INFO L132 encePairwiseOnDemand]: 336/349 looper letters, 97 selfloop transitions, 51 changer transitions 19/529 dead transitions. [2022-07-22 21:41:09,823 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 529 transitions, 3511 flow [2022-07-22 21:41:09,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 21:41:09,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-22 21:41:09,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 6148 transitions. [2022-07-22 21:41:09,827 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8808022922636103 [2022-07-22 21:41:09,827 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 6148 transitions. [2022-07-22 21:41:09,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 6148 transitions. [2022-07-22 21:41:09,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:09,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 6148 transitions. [2022-07-22 21:41:09,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 307.4) internal successors, (6148), 20 states have internal predecessors, (6148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:09,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 349.0) internal successors, (7329), 21 states have internal predecessors, (7329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:09,838 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 349.0) internal successors, (7329), 21 states have internal predecessors, (7329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:09,839 INFO L186 Difference]: Start difference. First operand has 492 places, 458 transitions, 2580 flow. Second operand 20 states and 6148 transitions. [2022-07-22 21:41:09,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 529 transitions, 3511 flow [2022-07-22 21:41:10,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 529 transitions, 3339 flow, removed 86 selfloop flow, removed 2 redundant places. [2022-07-22 21:41:10,133 INFO L242 Difference]: Finished difference. Result has 522 places, 488 transitions, 3002 flow [2022-07-22 21:41:10,134 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=2416, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3002, PETRI_PLACES=522, PETRI_TRANSITIONS=488} [2022-07-22 21:41:10,134 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 203 predicate places. [2022-07-22 21:41:10,135 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 488 transitions, 3002 flow [2022-07-22 21:41:10,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:10,135 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:10,135 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:10,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 21:41:10,136 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:10,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:10,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1799248610, now seen corresponding path program 4 times [2022-07-22 21:41:10,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:10,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573826979] [2022-07-22 21:41:10,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:10,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:10,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:10,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:10,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:10,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573826979] [2022-07-22 21:41:10,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573826979] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:10,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:10,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:41:10,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553733852] [2022-07-22 21:41:10,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:10,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:41:10,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:10,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:41:10,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:41:10,277 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 349 [2022-07-22 21:41:10,278 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 488 transitions, 3002 flow. Second operand has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:10,278 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:10,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 349 [2022-07-22 21:41:10,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:12,732 INFO L129 PetriNetUnfolder]: 2600/9247 cut-off events. [2022-07-22 21:41:12,732 INFO L130 PetriNetUnfolder]: For 62690/63628 co-relation queries the response was YES. [2022-07-22 21:41:12,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34782 conditions, 9247 events. 2600/9247 cut-off events. For 62690/63628 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 100320 event pairs, 1230 based on Foata normal form. 15/8389 useless extension candidates. Maximal degree in co-relation 34675. Up to 2586 conditions per place. [2022-07-22 21:41:12,899 INFO L132 encePairwiseOnDemand]: 336/349 looper letters, 149 selfloop transitions, 76 changer transitions 26/613 dead transitions. [2022-07-22 21:41:12,899 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 613 transitions, 4524 flow [2022-07-22 21:41:12,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-22 21:41:12,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-22 21:41:12,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 7380 transitions. [2022-07-22 21:41:12,906 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8810888252148997 [2022-07-22 21:41:12,906 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 7380 transitions. [2022-07-22 21:41:12,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 7380 transitions. [2022-07-22 21:41:12,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:12,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 7380 transitions. [2022-07-22 21:41:12,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 307.5) internal successors, (7380), 24 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:12,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 349.0) internal successors, (8725), 25 states have internal predecessors, (8725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:12,922 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 349.0) internal successors, (8725), 25 states have internal predecessors, (8725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:12,922 INFO L186 Difference]: Start difference. First operand has 522 places, 488 transitions, 3002 flow. Second operand 24 states and 7380 transitions. [2022-07-22 21:41:12,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 613 transitions, 4524 flow [2022-07-22 21:41:13,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 613 transitions, 4210 flow, removed 157 selfloop flow, removed 2 redundant places. [2022-07-22 21:41:13,330 INFO L242 Difference]: Finished difference. Result has 561 places, 517 transitions, 3442 flow [2022-07-22 21:41:13,330 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=2788, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3442, PETRI_PLACES=561, PETRI_TRANSITIONS=517} [2022-07-22 21:41:13,331 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 242 predicate places. [2022-07-22 21:41:13,331 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 517 transitions, 3442 flow [2022-07-22 21:41:13,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:13,331 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:13,331 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:13,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-22 21:41:13,332 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:13,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:13,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1102202296, now seen corresponding path program 5 times [2022-07-22 21:41:13,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:13,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181978104] [2022-07-22 21:41:13,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:13,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:13,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:13,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:13,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181978104] [2022-07-22 21:41:13,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181978104] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:13,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:13,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:41:13,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184231420] [2022-07-22 21:41:13,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:13,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:41:13,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:13,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:41:13,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:41:13,474 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 349 [2022-07-22 21:41:13,476 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 517 transitions, 3442 flow. Second operand has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:13,476 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:13,476 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 349 [2022-07-22 21:41:13,476 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:16,155 INFO L129 PetriNetUnfolder]: 2772/9591 cut-off events. [2022-07-22 21:41:16,156 INFO L130 PetriNetUnfolder]: For 53349/53594 co-relation queries the response was YES. [2022-07-22 21:41:16,322 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36973 conditions, 9591 events. 2772/9591 cut-off events. For 53349/53594 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 105078 event pairs, 1548 based on Foata normal form. 16/8658 useless extension candidates. Maximal degree in co-relation 36847. Up to 3456 conditions per place. [2022-07-22 21:41:16,356 INFO L132 encePairwiseOnDemand]: 336/349 looper letters, 136 selfloop transitions, 86 changer transitions 24/608 dead transitions. [2022-07-22 21:41:16,356 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 608 transitions, 4884 flow [2022-07-22 21:41:16,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-22 21:41:16,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-22 21:41:16,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 6761 transitions. [2022-07-22 21:41:16,360 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8805678562125554 [2022-07-22 21:41:16,360 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 6761 transitions. [2022-07-22 21:41:16,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 6761 transitions. [2022-07-22 21:41:16,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:16,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 6761 transitions. [2022-07-22 21:41:16,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 307.3181818181818) internal successors, (6761), 22 states have internal predecessors, (6761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:16,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 349.0) internal successors, (8027), 23 states have internal predecessors, (8027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:16,369 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 349.0) internal successors, (8027), 23 states have internal predecessors, (8027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:16,369 INFO L186 Difference]: Start difference. First operand has 561 places, 517 transitions, 3442 flow. Second operand 22 states and 6761 transitions. [2022-07-22 21:41:16,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 608 transitions, 4884 flow [2022-07-22 21:41:16,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 608 transitions, 4714 flow, removed 85 selfloop flow, removed 2 redundant places. [2022-07-22 21:41:16,815 INFO L242 Difference]: Finished difference. Result has 592 places, 549 transitions, 4075 flow [2022-07-22 21:41:16,816 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=3326, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4075, PETRI_PLACES=592, PETRI_TRANSITIONS=549} [2022-07-22 21:41:16,816 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 273 predicate places. [2022-07-22 21:41:16,817 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 549 transitions, 4075 flow [2022-07-22 21:41:16,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:16,817 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:16,817 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:16,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-22 21:41:16,818 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:16,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:16,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1500651626, now seen corresponding path program 6 times [2022-07-22 21:41:16,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:16,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959461982] [2022-07-22 21:41:16,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:16,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:16,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:16,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:16,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959461982] [2022-07-22 21:41:16,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959461982] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:16,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:16,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:41:16,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546854364] [2022-07-22 21:41:16,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:16,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:41:16,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:16,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:41:16,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:41:16,944 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 349 [2022-07-22 21:41:16,945 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 549 transitions, 4075 flow. Second operand has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:16,945 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:16,946 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 349 [2022-07-22 21:41:16,946 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:19,324 INFO L129 PetriNetUnfolder]: 2868/9875 cut-off events. [2022-07-22 21:41:19,325 INFO L130 PetriNetUnfolder]: For 54695/54940 co-relation queries the response was YES. [2022-07-22 21:41:19,502 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38880 conditions, 9875 events. 2868/9875 cut-off events. For 54695/54940 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 108444 event pairs, 1602 based on Foata normal form. 16/8901 useless extension candidates. Maximal degree in co-relation 38741. Up to 3588 conditions per place. [2022-07-22 21:41:19,536 INFO L132 encePairwiseOnDemand]: 336/349 looper letters, 144 selfloop transitions, 89 changer transitions 16/611 dead transitions. [2022-07-22 21:41:19,536 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 606 places, 611 transitions, 5274 flow [2022-07-22 21:41:19,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 21:41:19,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-22 21:41:19,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5234 transitions. [2022-07-22 21:41:19,540 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8821843923815945 [2022-07-22 21:41:19,540 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5234 transitions. [2022-07-22 21:41:19,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5234 transitions. [2022-07-22 21:41:19,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:19,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5234 transitions. [2022-07-22 21:41:19,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 307.88235294117646) internal successors, (5234), 17 states have internal predecessors, (5234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:19,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 349.0) internal successors, (6282), 18 states have internal predecessors, (6282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:19,549 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 349.0) internal successors, (6282), 18 states have internal predecessors, (6282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:19,549 INFO L186 Difference]: Start difference. First operand has 592 places, 549 transitions, 4075 flow. Second operand 17 states and 5234 transitions. [2022-07-22 21:41:19,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 606 places, 611 transitions, 5274 flow [2022-07-22 21:41:20,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 611 transitions, 5080 flow, removed 97 selfloop flow, removed 2 redundant places. [2022-07-22 21:41:20,036 INFO L242 Difference]: Finished difference. Result has 613 places, 570 transitions, 4522 flow [2022-07-22 21:41:20,036 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=3905, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4522, PETRI_PLACES=613, PETRI_TRANSITIONS=570} [2022-07-22 21:41:20,039 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 294 predicate places. [2022-07-22 21:41:20,039 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 570 transitions, 4522 flow [2022-07-22 21:41:20,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:20,040 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:20,040 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:20,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-22 21:41:20,041 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:20,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:20,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1109934054, now seen corresponding path program 7 times [2022-07-22 21:41:20,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:20,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466141779] [2022-07-22 21:41:20,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:20,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:20,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:20,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:20,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:20,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466141779] [2022-07-22 21:41:20,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466141779] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:20,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:20,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:41:20,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613644269] [2022-07-22 21:41:20,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:20,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:41:20,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:20,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:41:20,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:41:20,162 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 349 [2022-07-22 21:41:20,177 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 570 transitions, 4522 flow. Second operand has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:20,178 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:20,178 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 349 [2022-07-22 21:41:20,178 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:22,751 INFO L129 PetriNetUnfolder]: 2912/10075 cut-off events. [2022-07-22 21:41:22,751 INFO L130 PetriNetUnfolder]: For 61223/61468 co-relation queries the response was YES. [2022-07-22 21:41:22,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40948 conditions, 10075 events. 2912/10075 cut-off events. For 61223/61468 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 111685 event pairs, 1592 based on Foata normal form. 16/9100 useless extension candidates. Maximal degree in co-relation 40801. Up to 3678 conditions per place. [2022-07-22 21:41:22,938 INFO L132 encePairwiseOnDemand]: 336/349 looper letters, 153 selfloop transitions, 104 changer transitions 14/633 dead transitions. [2022-07-22 21:41:22,938 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 633 transitions, 5747 flow [2022-07-22 21:41:22,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 21:41:22,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-22 21:41:22,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4926 transitions. [2022-07-22 21:41:22,942 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8821633237822349 [2022-07-22 21:41:22,942 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4926 transitions. [2022-07-22 21:41:22,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4926 transitions. [2022-07-22 21:41:22,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:22,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4926 transitions. [2022-07-22 21:41:22,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 307.875) internal successors, (4926), 16 states have internal predecessors, (4926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:22,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 349.0) internal successors, (5933), 17 states have internal predecessors, (5933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:22,950 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 349.0) internal successors, (5933), 17 states have internal predecessors, (5933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:22,950 INFO L186 Difference]: Start difference. First operand has 613 places, 570 transitions, 4522 flow. Second operand 16 states and 4926 transitions. [2022-07-22 21:41:22,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 633 transitions, 5747 flow [2022-07-22 21:41:23,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 633 transitions, 5591 flow, removed 78 selfloop flow, removed 2 redundant places. [2022-07-22 21:41:23,462 INFO L242 Difference]: Finished difference. Result has 633 places, 588 transitions, 4951 flow [2022-07-22 21:41:23,463 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=4370, PETRI_DIFFERENCE_MINUEND_PLACES=609, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4951, PETRI_PLACES=633, PETRI_TRANSITIONS=588} [2022-07-22 21:41:23,463 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 314 predicate places. [2022-07-22 21:41:23,464 INFO L495 AbstractCegarLoop]: Abstraction has has 633 places, 588 transitions, 4951 flow [2022-07-22 21:41:23,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:23,464 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:23,464 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:23,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-22 21:41:23,465 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:23,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:23,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1391434710, now seen corresponding path program 8 times [2022-07-22 21:41:23,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:23,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748638880] [2022-07-22 21:41:23,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:23,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:23,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:23,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:23,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748638880] [2022-07-22 21:41:23,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748638880] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:23,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:23,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:41:23,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414786519] [2022-07-22 21:41:23,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:23,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:41:23,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:23,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:41:23,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:41:23,580 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 349 [2022-07-22 21:41:23,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 588 transitions, 4951 flow. Second operand has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:23,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:23,581 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 349 [2022-07-22 21:41:23,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:26,524 INFO L129 PetriNetUnfolder]: 2972/10527 cut-off events. [2022-07-22 21:41:26,524 INFO L130 PetriNetUnfolder]: For 67724/67969 co-relation queries the response was YES. [2022-07-22 21:41:26,969 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43534 conditions, 10527 events. 2972/10527 cut-off events. For 67724/67969 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 118832 event pairs, 1572 based on Foata normal form. 16/9534 useless extension candidates. Maximal degree in co-relation 43379. Up to 3574 conditions per place. [2022-07-22 21:41:27,000 INFO L132 encePairwiseOnDemand]: 336/349 looper letters, 176 selfloop transitions, 98 changer transitions 23/659 dead transitions. [2022-07-22 21:41:27,001 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 659 transitions, 6456 flow [2022-07-22 21:41:27,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 21:41:27,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-22 21:41:27,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6458 transitions. [2022-07-22 21:41:27,007 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8811570473461591 [2022-07-22 21:41:27,007 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6458 transitions. [2022-07-22 21:41:27,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6458 transitions. [2022-07-22 21:41:27,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:27,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6458 transitions. [2022-07-22 21:41:27,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 307.5238095238095) internal successors, (6458), 21 states have internal predecessors, (6458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:27,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 349.0) internal successors, (7678), 22 states have internal predecessors, (7678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:27,018 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 349.0) internal successors, (7678), 22 states have internal predecessors, (7678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:27,018 INFO L186 Difference]: Start difference. First operand has 633 places, 588 transitions, 4951 flow. Second operand 21 states and 6458 transitions. [2022-07-22 21:41:27,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 651 places, 659 transitions, 6456 flow [2022-07-22 21:41:27,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 648 places, 659 transitions, 6280 flow, removed 66 selfloop flow, removed 3 redundant places. [2022-07-22 21:41:27,538 INFO L242 Difference]: Finished difference. Result has 662 places, 612 transitions, 5624 flow [2022-07-22 21:41:27,539 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=4813, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5624, PETRI_PLACES=662, PETRI_TRANSITIONS=612} [2022-07-22 21:41:27,539 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 343 predicate places. [2022-07-22 21:41:27,539 INFO L495 AbstractCegarLoop]: Abstraction has has 662 places, 612 transitions, 5624 flow [2022-07-22 21:41:27,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:27,540 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:27,540 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:27,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-22 21:41:27,540 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:27,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:27,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1964860582, now seen corresponding path program 9 times [2022-07-22 21:41:27,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:27,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764904580] [2022-07-22 21:41:27,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:27,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:27,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:27,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:27,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764904580] [2022-07-22 21:41:27,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764904580] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:27,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:27,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:41:27,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906549258] [2022-07-22 21:41:27,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:27,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:41:27,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:27,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:41:27,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:41:27,688 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 349 [2022-07-22 21:41:27,689 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 662 places, 612 transitions, 5624 flow. Second operand has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:27,689 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:27,690 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 349 [2022-07-22 21:41:27,690 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:31,041 INFO L129 PetriNetUnfolder]: 2970/10451 cut-off events. [2022-07-22 21:41:31,042 INFO L130 PetriNetUnfolder]: For 76121/76366 co-relation queries the response was YES. [2022-07-22 21:41:31,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44934 conditions, 10451 events. 2970/10451 cut-off events. For 76121/76366 co-relation queries the response was YES. Maximal size of possible extension queue 862. Compared 117477 event pairs, 1578 based on Foata normal form. 16/9462 useless extension candidates. Maximal degree in co-relation 44767. Up to 3736 conditions per place. [2022-07-22 21:41:31,237 INFO L132 encePairwiseOnDemand]: 336/349 looper letters, 166 selfloop transitions, 117 changer transitions 23/668 dead transitions. [2022-07-22 21:41:31,237 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 677 places, 668 transitions, 6828 flow [2022-07-22 21:41:31,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 21:41:31,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-22 21:41:31,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5537 transitions. [2022-07-22 21:41:31,244 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8814071951607768 [2022-07-22 21:41:31,244 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5537 transitions. [2022-07-22 21:41:31,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5537 transitions. [2022-07-22 21:41:31,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:31,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5537 transitions. [2022-07-22 21:41:31,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 307.6111111111111) internal successors, (5537), 18 states have internal predecessors, (5537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:31,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 349.0) internal successors, (6631), 19 states have internal predecessors, (6631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:31,253 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 349.0) internal successors, (6631), 19 states have internal predecessors, (6631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:31,253 INFO L186 Difference]: Start difference. First operand has 662 places, 612 transitions, 5624 flow. Second operand 18 states and 5537 transitions. [2022-07-22 21:41:31,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 677 places, 668 transitions, 6828 flow [2022-07-22 21:41:31,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 675 places, 668 transitions, 6596 flow, removed 116 selfloop flow, removed 2 redundant places. [2022-07-22 21:41:31,859 INFO L242 Difference]: Finished difference. Result has 683 places, 622 transitions, 5910 flow [2022-07-22 21:41:31,859 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=5406, PETRI_DIFFERENCE_MINUEND_PLACES=658, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5910, PETRI_PLACES=683, PETRI_TRANSITIONS=622} [2022-07-22 21:41:31,860 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 364 predicate places. [2022-07-22 21:41:31,860 INFO L495 AbstractCegarLoop]: Abstraction has has 683 places, 622 transitions, 5910 flow [2022-07-22 21:41:31,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:31,861 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:31,861 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:31,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-22 21:41:31,862 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:31,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:31,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1783709758, now seen corresponding path program 10 times [2022-07-22 21:41:31,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:31,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692673842] [2022-07-22 21:41:31,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:31,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:31,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:31,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:31,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692673842] [2022-07-22 21:41:31,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692673842] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:31,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:31,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:41:31,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010750909] [2022-07-22 21:41:31,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:31,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:41:31,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:31,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:41:31,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:41:31,978 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 349 [2022-07-22 21:41:31,979 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 683 places, 622 transitions, 5910 flow. Second operand has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:31,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:31,979 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 349 [2022-07-22 21:41:31,980 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:35,528 INFO L129 PetriNetUnfolder]: 3000/10649 cut-off events. [2022-07-22 21:41:35,528 INFO L130 PetriNetUnfolder]: For 78399/78643 co-relation queries the response was YES. [2022-07-22 21:41:35,706 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46355 conditions, 10649 events. 3000/10649 cut-off events. For 78399/78643 co-relation queries the response was YES. Maximal size of possible extension queue 878. Compared 120635 event pairs, 1616 based on Foata normal form. 16/9642 useless extension candidates. Maximal degree in co-relation 46181. Up to 3798 conditions per place. [2022-07-22 21:41:35,738 INFO L132 encePairwiseOnDemand]: 336/349 looper letters, 168 selfloop transitions, 119 changer transitions 20/669 dead transitions. [2022-07-22 21:41:35,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 698 places, 669 transitions, 7029 flow [2022-07-22 21:41:35,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 21:41:35,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-22 21:41:35,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5537 transitions. [2022-07-22 21:41:35,742 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8814071951607768 [2022-07-22 21:41:35,742 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5537 transitions. [2022-07-22 21:41:35,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5537 transitions. [2022-07-22 21:41:35,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:35,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5537 transitions. [2022-07-22 21:41:35,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 307.6111111111111) internal successors, (5537), 18 states have internal predecessors, (5537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:35,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 349.0) internal successors, (6631), 19 states have internal predecessors, (6631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:35,750 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 349.0) internal successors, (6631), 19 states have internal predecessors, (6631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:35,750 INFO L186 Difference]: Start difference. First operand has 683 places, 622 transitions, 5910 flow. Second operand 18 states and 5537 transitions. [2022-07-22 21:41:35,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 698 places, 669 transitions, 7029 flow [2022-07-22 21:41:36,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 694 places, 669 transitions, 6837 flow, removed 53 selfloop flow, removed 4 redundant places. [2022-07-22 21:41:36,498 INFO L242 Difference]: Finished difference. Result has 702 places, 636 transitions, 6304 flow [2022-07-22 21:41:36,499 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=5732, PETRI_DIFFERENCE_MINUEND_PLACES=677, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6304, PETRI_PLACES=702, PETRI_TRANSITIONS=636} [2022-07-22 21:41:36,499 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 383 predicate places. [2022-07-22 21:41:36,499 INFO L495 AbstractCegarLoop]: Abstraction has has 702 places, 636 transitions, 6304 flow [2022-07-22 21:41:36,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:36,500 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:36,500 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:36,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-22 21:41:36,500 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:36,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:36,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1213203078, now seen corresponding path program 11 times [2022-07-22 21:41:36,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:36,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331760304] [2022-07-22 21:41:36,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:36,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:36,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:36,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:36,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331760304] [2022-07-22 21:41:36,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331760304] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:36,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:36,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:41:36,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446813721] [2022-07-22 21:41:36,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:36,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:41:36,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:36,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:41:36,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:41:36,620 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 349 [2022-07-22 21:41:36,621 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 702 places, 636 transitions, 6304 flow. Second operand has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:36,621 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:36,621 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 349 [2022-07-22 21:41:36,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:40,113 INFO L129 PetriNetUnfolder]: 3040/10893 cut-off events. [2022-07-22 21:41:40,114 INFO L130 PetriNetUnfolder]: For 81601/81845 co-relation queries the response was YES. [2022-07-22 21:41:40,471 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48220 conditions, 10893 events. 3040/10893 cut-off events. For 81601/81845 co-relation queries the response was YES. Maximal size of possible extension queue 896. Compared 124296 event pairs, 1618 based on Foata normal form. 16/9871 useless extension candidates. Maximal degree in co-relation 48039. Up to 3850 conditions per place. [2022-07-22 21:41:40,511 INFO L132 encePairwiseOnDemand]: 336/349 looper letters, 198 selfloop transitions, 113 changer transitions 15/688 dead transitions. [2022-07-22 21:41:40,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 716 places, 688 transitions, 7670 flow [2022-07-22 21:41:40,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 21:41:40,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-22 21:41:40,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5234 transitions. [2022-07-22 21:41:40,515 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8821843923815945 [2022-07-22 21:41:40,516 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5234 transitions. [2022-07-22 21:41:40,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5234 transitions. [2022-07-22 21:41:40,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:40,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5234 transitions. [2022-07-22 21:41:40,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 307.88235294117646) internal successors, (5234), 17 states have internal predecessors, (5234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:40,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 349.0) internal successors, (6282), 18 states have internal predecessors, (6282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:40,526 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 349.0) internal successors, (6282), 18 states have internal predecessors, (6282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:40,526 INFO L186 Difference]: Start difference. First operand has 702 places, 636 transitions, 6304 flow. Second operand 17 states and 5234 transitions. [2022-07-22 21:41:40,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 716 places, 688 transitions, 7670 flow [2022-07-22 21:41:41,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 713 places, 688 transitions, 7534 flow, removed 43 selfloop flow, removed 3 redundant places. [2022-07-22 21:41:41,314 INFO L242 Difference]: Finished difference. Result has 722 places, 655 transitions, 6942 flow [2022-07-22 21:41:41,315 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=6173, PETRI_DIFFERENCE_MINUEND_PLACES=697, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6942, PETRI_PLACES=722, PETRI_TRANSITIONS=655} [2022-07-22 21:41:41,316 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 403 predicate places. [2022-07-22 21:41:41,317 INFO L495 AbstractCegarLoop]: Abstraction has has 722 places, 655 transitions, 6942 flow [2022-07-22 21:41:41,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:41,318 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:41,318 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:41,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-22 21:41:41,318 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:41,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:41,319 INFO L85 PathProgramCache]: Analyzing trace with hash 2123504974, now seen corresponding path program 12 times [2022-07-22 21:41:41,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:41,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261492015] [2022-07-22 21:41:41,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:41,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:41,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:41,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:41,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261492015] [2022-07-22 21:41:41,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261492015] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:41,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:41,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:41:41,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276345196] [2022-07-22 21:41:41,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:41,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:41:41,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:41,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:41:41,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:41:41,475 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 349 [2022-07-22 21:41:41,477 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 722 places, 655 transitions, 6942 flow. Second operand has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:41,477 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:41,477 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 349 [2022-07-22 21:41:41,477 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:45,189 INFO L129 PetriNetUnfolder]: 3036/10961 cut-off events. [2022-07-22 21:41:45,190 INFO L130 PetriNetUnfolder]: For 85625/85869 co-relation queries the response was YES. [2022-07-22 21:41:45,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49049 conditions, 10961 events. 3036/10961 cut-off events. For 85625/85869 co-relation queries the response was YES. Maximal size of possible extension queue 898. Compared 125388 event pairs, 1608 based on Foata normal form. 16/9948 useless extension candidates. Maximal degree in co-relation 48861. Up to 3832 conditions per place. [2022-07-22 21:41:45,437 INFO L132 encePairwiseOnDemand]: 336/349 looper letters, 196 selfloop transitions, 116 changer transitions 24/698 dead transitions. [2022-07-22 21:41:45,437 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 737 places, 698 transitions, 8088 flow [2022-07-22 21:41:45,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 21:41:45,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-22 21:41:45,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5541 transitions. [2022-07-22 21:41:45,440 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8820439350525311 [2022-07-22 21:41:45,440 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5541 transitions. [2022-07-22 21:41:45,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5541 transitions. [2022-07-22 21:41:45,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:45,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5541 transitions. [2022-07-22 21:41:45,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 307.8333333333333) internal successors, (5541), 18 states have internal predecessors, (5541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:45,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 349.0) internal successors, (6631), 19 states have internal predecessors, (6631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:45,450 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 349.0) internal successors, (6631), 19 states have internal predecessors, (6631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:45,451 INFO L186 Difference]: Start difference. First operand has 722 places, 655 transitions, 6942 flow. Second operand 18 states and 5541 transitions. [2022-07-22 21:41:45,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 737 places, 698 transitions, 8088 flow [2022-07-22 21:41:46,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 734 places, 698 transitions, 7794 flow, removed 122 selfloop flow, removed 3 redundant places. [2022-07-22 21:41:46,404 INFO L242 Difference]: Finished difference. Result has 741 places, 664 transitions, 7206 flow [2022-07-22 21:41:46,404 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=6698, PETRI_DIFFERENCE_MINUEND_PLACES=717, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7206, PETRI_PLACES=741, PETRI_TRANSITIONS=664} [2022-07-22 21:41:46,404 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 422 predicate places. [2022-07-22 21:41:46,405 INFO L495 AbstractCegarLoop]: Abstraction has has 741 places, 664 transitions, 7206 flow [2022-07-22 21:41:46,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:46,405 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:46,405 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:46,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-22 21:41:46,405 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:46,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:46,406 INFO L85 PathProgramCache]: Analyzing trace with hash 580025266, now seen corresponding path program 13 times [2022-07-22 21:41:46,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:46,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842012594] [2022-07-22 21:41:46,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:46,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:46,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:46,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:46,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842012594] [2022-07-22 21:41:46,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842012594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:46,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:46,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:41:46,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301674991] [2022-07-22 21:41:46,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:46,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:41:46,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:46,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:41:46,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:41:46,520 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 349 [2022-07-22 21:41:46,521 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 741 places, 664 transitions, 7206 flow. Second operand has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:46,522 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:46,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 349 [2022-07-22 21:41:46,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:41:50,550 INFO L129 PetriNetUnfolder]: 3198/11609 cut-off events. [2022-07-22 21:41:50,550 INFO L130 PetriNetUnfolder]: For 108826/110307 co-relation queries the response was YES. [2022-07-22 21:41:50,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52570 conditions, 11609 events. 3198/11609 cut-off events. For 108826/110307 co-relation queries the response was YES. Maximal size of possible extension queue 958. Compared 133863 event pairs, 1469 based on Foata normal form. 15/10589 useless extension candidates. Maximal degree in co-relation 52377. Up to 3557 conditions per place. [2022-07-22 21:41:51,029 INFO L132 encePairwiseOnDemand]: 336/349 looper letters, 220 selfloop transitions, 144 changer transitions 23/749 dead transitions. [2022-07-22 21:41:51,029 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 760 places, 749 transitions, 9004 flow [2022-07-22 21:41:51,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-22 21:41:51,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-22 21:41:51,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 6759 transitions. [2022-07-22 21:41:51,032 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8803073717113832 [2022-07-22 21:41:51,032 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 6759 transitions. [2022-07-22 21:41:51,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 6759 transitions. [2022-07-22 21:41:51,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:41:51,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 6759 transitions. [2022-07-22 21:41:51,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 307.22727272727275) internal successors, (6759), 22 states have internal predecessors, (6759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:51,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 349.0) internal successors, (8027), 23 states have internal predecessors, (8027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:51,041 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 349.0) internal successors, (8027), 23 states have internal predecessors, (8027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:51,041 INFO L186 Difference]: Start difference. First operand has 741 places, 664 transitions, 7206 flow. Second operand 22 states and 6759 transitions. [2022-07-22 21:41:51,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 760 places, 749 transitions, 9004 flow [2022-07-22 21:41:51,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 757 places, 749 transitions, 8847 flow, removed 77 selfloop flow, removed 3 redundant places. [2022-07-22 21:41:51,840 INFO L242 Difference]: Finished difference. Result has 771 places, 696 transitions, 8108 flow [2022-07-22 21:41:51,841 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=7051, PETRI_DIFFERENCE_MINUEND_PLACES=736, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=8108, PETRI_PLACES=771, PETRI_TRANSITIONS=696} [2022-07-22 21:41:51,841 INFO L279 CegarLoopForPetriNet]: 319 programPoint places, 452 predicate places. [2022-07-22 21:41:51,841 INFO L495 AbstractCegarLoop]: Abstraction has has 771 places, 696 transitions, 8108 flow [2022-07-22 21:41:51,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:51,842 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:41:51,842 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:41:51,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-22 21:41:51,842 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:41:51,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:41:51,843 INFO L85 PathProgramCache]: Analyzing trace with hash -178836102, now seen corresponding path program 14 times [2022-07-22 21:41:51,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:41:51,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169375991] [2022-07-22 21:41:51,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:41:51,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:41:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:41:51,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:41:51,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:41:51,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169375991] [2022-07-22 21:41:51,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169375991] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:41:51,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:41:51,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:41:51,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391739721] [2022-07-22 21:41:51,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:41:51,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:41:51,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:41:51,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:41:51,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:41:51,968 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 349 [2022-07-22 21:41:51,969 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 771 places, 696 transitions, 8108 flow. Second operand has 10 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:41:51,970 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:41:51,970 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 349 [2022-07-22 21:41:51,970 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand