./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c361ebc03d879240d418527d643e8a7b3c7ac084ceb3e66857b21a687a1c7f90 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:25:22,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:25:22,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:25:22,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:25:22,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:25:22,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:25:22,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:25:22,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:25:22,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:25:22,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:25:22,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:25:22,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:25:22,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:25:22,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:25:22,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:25:22,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:25:22,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:25:22,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:25:22,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:25:22,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:25:22,497 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:25:22,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:25:22,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:25:22,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:25:22,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:25:22,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:25:22,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:25:22,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:25:22,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:25:22,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:25:22,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:25:22,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:25:22,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:25:22,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:25:22,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:25:22,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:25:22,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:25:22,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:25:22,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:25:22,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:25:22,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:25:22,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:25:22,523 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:25:22,559 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:25:22,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:25:22,560 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:25:22,561 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:25:22,561 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:25:22,561 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:25:22,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:25:22,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:25:22,563 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:25:22,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:25:22,564 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:25:22,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:25:22,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:25:22,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:25:22,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:25:22,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:25:22,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:25:22,565 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:25:22,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:25:22,566 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:25:22,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:25:22,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:25:22,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:25:22,567 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:25:22,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:25:22,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:25:22,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:25:22,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:25:22,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:25:22,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:25:22,574 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:25:22,574 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:25:22,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:25:22,574 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c361ebc03d879240d418527d643e8a7b3c7ac084ceb3e66857b21a687a1c7f90 [2022-07-12 10:25:22,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:25:22,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:25:22,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:25:22,798 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:25:22,799 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:25:22,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c [2022-07-12 10:25:22,860 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d957fe0b3/8bf438069ecf4213bd29b0e602eb132f/FLAG555ee939d [2022-07-12 10:25:23,250 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:25:23,251 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-sre-symm.wvr.c [2022-07-12 10:25:23,263 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d957fe0b3/8bf438069ecf4213bd29b0e602eb132f/FLAG555ee939d [2022-07-12 10:25:23,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d957fe0b3/8bf438069ecf4213bd29b0e602eb132f [2022-07-12 10:25:23,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:25:23,645 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:25:23,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:25:23,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:25:23,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:25:23,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:25:23" (1/1) ... [2022-07-12 10:25:23,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b91ccd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:23, skipping insertion in model container [2022-07-12 10:25:23,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:25:23" (1/1) ... [2022-07-12 10:25:23,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:25:23,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:25:23,796 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-sre-symm.wvr.c[2133,2146] [2022-07-12 10:25:23,799 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:25:23,806 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:25:23,823 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-sre-symm.wvr.c[2133,2146] [2022-07-12 10:25:23,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:25:23,838 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:25:23,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:23 WrapperNode [2022-07-12 10:25:23,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:25:23,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:25:23,840 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:25:23,840 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:25:23,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:23" (1/1) ... [2022-07-12 10:25:23,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:23" (1/1) ... [2022-07-12 10:25:23,883 INFO L137 Inliner]: procedures = 21, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2022-07-12 10:25:23,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:25:23,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:25:23,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:25:23,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:25:23,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:23" (1/1) ... [2022-07-12 10:25:23,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:23" (1/1) ... [2022-07-12 10:25:23,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:23" (1/1) ... [2022-07-12 10:25:23,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:23" (1/1) ... [2022-07-12 10:25:23,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:23" (1/1) ... [2022-07-12 10:25:23,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:23" (1/1) ... [2022-07-12 10:25:23,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:23" (1/1) ... [2022-07-12 10:25:23,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:25:23,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:25:23,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:25:23,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:25:23,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:23" (1/1) ... [2022-07-12 10:25:23,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:25:23,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:25:23,953 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:25:23,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:25:23,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:25:23,993 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:25:23,993 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:25:23,993 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:25:23,994 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:25:23,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:25:23,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:25:23,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:25:23,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:25:23,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:25:23,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:25:23,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:25:23,996 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:25:24,063 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:25:24,065 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:25:24,254 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:25:24,262 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:25:24,262 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:25:24,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:25:24 BoogieIcfgContainer [2022-07-12 10:25:24,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:25:24,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:25:24,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:25:24,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:25:24,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:25:23" (1/3) ... [2022-07-12 10:25:24,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@612efa86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:25:24, skipping insertion in model container [2022-07-12 10:25:24,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:23" (2/3) ... [2022-07-12 10:25:24,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@612efa86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:25:24, skipping insertion in model container [2022-07-12 10:25:24,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:25:24" (3/3) ... [2022-07-12 10:25:24,275 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-sre-symm.wvr.c [2022-07-12 10:25:24,280 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:25:24,288 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:25:24,289 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:25:24,289 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:25:24,352 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-12 10:25:24,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 102 transitions, 220 flow [2022-07-12 10:25:24,459 INFO L129 PetriNetUnfolder]: 7/100 cut-off events. [2022-07-12 10:25:24,459 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 10:25:24,462 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 100 events. 7/100 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-07-12 10:25:24,463 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 102 transitions, 220 flow [2022-07-12 10:25:24,466 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 91 transitions, 194 flow [2022-07-12 10:25:24,474 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:25:24,479 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@696ac95a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@37dac56d [2022-07-12 10:25:24,479 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-12 10:25:24,501 INFO L129 PetriNetUnfolder]: 7/90 cut-off events. [2022-07-12 10:25:24,502 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 10:25:24,502 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:24,503 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:24,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:24,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:24,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1122200234, now seen corresponding path program 1 times [2022-07-12 10:25:24,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:24,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432790581] [2022-07-12 10:25:24,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:24,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:24,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:24,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:24,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:24,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432790581] [2022-07-12 10:25:24,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432790581] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:24,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:24,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:25:24,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196719694] [2022-07-12 10:25:24,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:24,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:25:24,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:24,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:25:24,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:25:24,888 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 102 [2022-07-12 10:25:24,892 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 194 flow. Second operand has 8 states, 8 states have (on average 72.0) internal successors, (576), 8 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:24,892 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:24,893 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 102 [2022-07-12 10:25:24,894 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:25,258 INFO L129 PetriNetUnfolder]: 55/297 cut-off events. [2022-07-12 10:25:25,259 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-07-12 10:25:25,261 INFO L84 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 297 events. 55/297 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1144 event pairs, 11 based on Foata normal form. 9/290 useless extension candidates. Maximal degree in co-relation 265. Up to 44 conditions per place. [2022-07-12 10:25:25,265 INFO L132 encePairwiseOnDemand]: 86/102 looper letters, 52 selfloop transitions, 10 changer transitions 34/155 dead transitions. [2022-07-12 10:25:25,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 155 transitions, 541 flow [2022-07-12 10:25:25,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 10:25:25,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-12 10:25:25,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1141 transitions. [2022-07-12 10:25:25,288 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7457516339869281 [2022-07-12 10:25:25,289 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1141 transitions. [2022-07-12 10:25:25,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1141 transitions. [2022-07-12 10:25:25,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:25,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1141 transitions. [2022-07-12 10:25:25,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 76.06666666666666) internal successors, (1141), 15 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 102.0) internal successors, (1632), 16 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,311 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 102.0) internal successors, (1632), 16 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,313 INFO L186 Difference]: Start difference. First operand has 91 places, 91 transitions, 194 flow. Second operand 15 states and 1141 transitions. [2022-07-12 10:25:25,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 155 transitions, 541 flow [2022-07-12 10:25:25,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 155 transitions, 515 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-12 10:25:25,321 INFO L242 Difference]: Finished difference. Result has 111 places, 93 transitions, 253 flow [2022-07-12 10:25:25,323 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=253, PETRI_PLACES=111, PETRI_TRANSITIONS=93} [2022-07-12 10:25:25,326 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 20 predicate places. [2022-07-12 10:25:25,326 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 93 transitions, 253 flow [2022-07-12 10:25:25,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.0) internal successors, (576), 8 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,327 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:25,327 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] [2022-07-12 10:25:25,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:25:25,328 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:25,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:25,328 INFO L85 PathProgramCache]: Analyzing trace with hash -569889743, now seen corresponding path program 1 times [2022-07-12 10:25:25,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:25,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11272857] [2022-07-12 10:25:25,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:25,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:25,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:25,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:25,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11272857] [2022-07-12 10:25:25,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11272857] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:25,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:25,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:25:25,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892271659] [2022-07-12 10:25:25,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:25,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:25:25,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:25,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:25:25,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:25:25,435 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-07-12 10:25:25,435 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 93 transitions, 253 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,435 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:25,436 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-07-12 10:25:25,436 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:25,544 INFO L129 PetriNetUnfolder]: 41/342 cut-off events. [2022-07-12 10:25:25,556 INFO L130 PetriNetUnfolder]: For 104/106 co-relation queries the response was YES. [2022-07-12 10:25:25,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 587 conditions, 342 events. 41/342 cut-off events. For 104/106 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1582 event pairs, 19 based on Foata normal form. 1/311 useless extension candidates. Maximal degree in co-relation 562. Up to 46 conditions per place. [2022-07-12 10:25:25,561 INFO L132 encePairwiseOnDemand]: 98/102 looper letters, 20 selfloop transitions, 2 changer transitions 3/102 dead transitions. [2022-07-12 10:25:25,561 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 102 transitions, 324 flow [2022-07-12 10:25:25,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:25:25,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:25:25,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2022-07-12 10:25:25,563 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8921568627450981 [2022-07-12 10:25:25,563 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2022-07-12 10:25:25,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2022-07-12 10:25:25,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:25,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2022-07-12 10:25:25,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,567 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,567 INFO L186 Difference]: Start difference. First operand has 111 places, 93 transitions, 253 flow. Second operand 3 states and 273 transitions. [2022-07-12 10:25:25,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 102 transitions, 324 flow [2022-07-12 10:25:25,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 102 transitions, 313 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-07-12 10:25:25,577 INFO L242 Difference]: Finished difference. Result has 99 places, 93 transitions, 252 flow [2022-07-12 10:25:25,577 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=99, PETRI_TRANSITIONS=93} [2022-07-12 10:25:25,580 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 8 predicate places. [2022-07-12 10:25:25,580 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 93 transitions, 252 flow [2022-07-12 10:25:25,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,581 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:25,581 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:25,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:25:25,583 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:25,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:25,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1322121675, now seen corresponding path program 2 times [2022-07-12 10:25:25,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:25,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907347989] [2022-07-12 10:25:25,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:25,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:25,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:25,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:25,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907347989] [2022-07-12 10:25:25,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907347989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:25,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:25,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:25:25,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367289520] [2022-07-12 10:25:25,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:25,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:25:25,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:25,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:25:25,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:25:25,683 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-07-12 10:25:25,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 93 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:25,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-07-12 10:25:25,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:25,736 INFO L129 PetriNetUnfolder]: 26/184 cut-off events. [2022-07-12 10:25:25,736 INFO L130 PetriNetUnfolder]: For 65/66 co-relation queries the response was YES. [2022-07-12 10:25:25,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 184 events. 26/184 cut-off events. For 65/66 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 539 event pairs, 13 based on Foata normal form. 7/173 useless extension candidates. Maximal degree in co-relation 287. Up to 39 conditions per place. [2022-07-12 10:25:25,738 INFO L132 encePairwiseOnDemand]: 98/102 looper letters, 15 selfloop transitions, 2 changer transitions 9/93 dead transitions. [2022-07-12 10:25:25,739 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 93 transitions, 288 flow [2022-07-12 10:25:25,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:25:25,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:25:25,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2022-07-12 10:25:25,740 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8758169934640523 [2022-07-12 10:25:25,741 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2022-07-12 10:25:25,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2022-07-12 10:25:25,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:25,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2022-07-12 10:25:25,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,744 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,744 INFO L186 Difference]: Start difference. First operand has 99 places, 93 transitions, 252 flow. Second operand 3 states and 268 transitions. [2022-07-12 10:25:25,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 93 transitions, 288 flow [2022-07-12 10:25:25,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 93 transitions, 278 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-07-12 10:25:25,748 INFO L242 Difference]: Finished difference. Result has 99 places, 83 transitions, 204 flow [2022-07-12 10:25:25,748 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=99, PETRI_TRANSITIONS=83} [2022-07-12 10:25:25,749 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 8 predicate places. [2022-07-12 10:25:25,749 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 83 transitions, 204 flow [2022-07-12 10:25:25,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,749 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:25,750 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:25,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:25:25,750 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:25,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:25,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1194239646, now seen corresponding path program 1 times [2022-07-12 10:25:25,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:25,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544284405] [2022-07-12 10:25:25,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:25,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:25,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:25,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:25,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544284405] [2022-07-12 10:25:25,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544284405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:25,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:25,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:25,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142036967] [2022-07-12 10:25:25,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:25,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:25,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:25,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:25,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:25,945 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:25,946 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 83 transitions, 204 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,946 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:25,946 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:25,946 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:26,314 INFO L129 PetriNetUnfolder]: 96/368 cut-off events. [2022-07-12 10:25:26,314 INFO L130 PetriNetUnfolder]: For 155/157 co-relation queries the response was YES. [2022-07-12 10:25:26,316 INFO L84 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 368 events. 96/368 cut-off events. For 155/157 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1618 event pairs, 35 based on Foata normal form. 1/360 useless extension candidates. Maximal degree in co-relation 693. Up to 112 conditions per place. [2022-07-12 10:25:26,317 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 75 selfloop transitions, 5 changer transitions 34/167 dead transitions. [2022-07-12 10:25:26,318 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 167 transitions, 697 flow [2022-07-12 10:25:26,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:25:26,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:25:26,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1627 transitions. [2022-07-12 10:25:26,323 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6646241830065359 [2022-07-12 10:25:26,323 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1627 transitions. [2022-07-12 10:25:26,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1627 transitions. [2022-07-12 10:25:26,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:26,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1627 transitions. [2022-07-12 10:25:26,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 67.79166666666667) internal successors, (1627), 24 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:26,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:26,336 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:26,338 INFO L186 Difference]: Start difference. First operand has 99 places, 83 transitions, 204 flow. Second operand 24 states and 1627 transitions. [2022-07-12 10:25:26,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 167 transitions, 697 flow [2022-07-12 10:25:26,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 167 transitions, 643 flow, removed 22 selfloop flow, removed 5 redundant places. [2022-07-12 10:25:26,343 INFO L242 Difference]: Finished difference. Result has 132 places, 87 transitions, 283 flow [2022-07-12 10:25:26,343 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=283, PETRI_PLACES=132, PETRI_TRANSITIONS=87} [2022-07-12 10:25:26,344 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 41 predicate places. [2022-07-12 10:25:26,344 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 87 transitions, 283 flow [2022-07-12 10:25:26,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:26,345 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:26,345 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:26,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:25:26,346 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:26,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:26,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1572308048, now seen corresponding path program 2 times [2022-07-12 10:25:26,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:26,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743678776] [2022-07-12 10:25:26,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:26,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:26,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:26,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:26,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743678776] [2022-07-12 10:25:26,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743678776] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:26,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:26,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:26,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003822935] [2022-07-12 10:25:26,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:26,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:26,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:26,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:26,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:26,535 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:26,535 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 87 transitions, 283 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:26,535 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:26,535 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:26,535 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:26,822 INFO L129 PetriNetUnfolder]: 94/370 cut-off events. [2022-07-12 10:25:26,823 INFO L130 PetriNetUnfolder]: For 885/886 co-relation queries the response was YES. [2022-07-12 10:25:26,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1186 conditions, 370 events. 94/370 cut-off events. For 885/886 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1614 event pairs, 44 based on Foata normal form. 1/358 useless extension candidates. Maximal degree in co-relation 1108. Up to 149 conditions per place. [2022-07-12 10:25:26,828 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 45 selfloop transitions, 14 changer transitions 18/130 dead transitions. [2022-07-12 10:25:26,829 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 130 transitions, 757 flow [2022-07-12 10:25:26,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:25:26,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:25:26,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1086 transitions. [2022-07-12 10:25:26,839 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6654411764705882 [2022-07-12 10:25:26,839 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1086 transitions. [2022-07-12 10:25:26,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1086 transitions. [2022-07-12 10:25:26,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:26,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1086 transitions. [2022-07-12 10:25:26,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 67.875) internal successors, (1086), 16 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:26,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:26,848 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:26,848 INFO L186 Difference]: Start difference. First operand has 132 places, 87 transitions, 283 flow. Second operand 16 states and 1086 transitions. [2022-07-12 10:25:26,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 130 transitions, 757 flow [2022-07-12 10:25:26,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 130 transitions, 682 flow, removed 37 selfloop flow, removed 11 redundant places. [2022-07-12 10:25:26,858 INFO L242 Difference]: Finished difference. Result has 130 places, 97 transitions, 405 flow [2022-07-12 10:25:26,859 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=405, PETRI_PLACES=130, PETRI_TRANSITIONS=97} [2022-07-12 10:25:26,862 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 39 predicate places. [2022-07-12 10:25:26,862 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 97 transitions, 405 flow [2022-07-12 10:25:26,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:26,863 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:26,863 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:26,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:25:26,864 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:26,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:26,864 INFO L85 PathProgramCache]: Analyzing trace with hash 74872556, now seen corresponding path program 3 times [2022-07-12 10:25:26,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:26,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648366230] [2022-07-12 10:25:26,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:26,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:27,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:27,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:27,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648366230] [2022-07-12 10:25:27,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648366230] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:27,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:27,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:27,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664860583] [2022-07-12 10:25:27,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:27,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:27,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:27,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:27,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:27,032 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:27,033 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 97 transitions, 405 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,033 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:27,033 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:27,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:27,380 INFO L129 PetriNetUnfolder]: 118/436 cut-off events. [2022-07-12 10:25:27,380 INFO L130 PetriNetUnfolder]: For 1405/1409 co-relation queries the response was YES. [2022-07-12 10:25:27,382 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1600 conditions, 436 events. 118/436 cut-off events. For 1405/1409 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2051 event pairs, 55 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 1521. Up to 155 conditions per place. [2022-07-12 10:25:27,384 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 60 selfloop transitions, 15 changer transitions 28/156 dead transitions. [2022-07-12 10:25:27,384 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 156 transitions, 1112 flow [2022-07-12 10:25:27,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 10:25:27,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-12 10:25:27,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1418 transitions. [2022-07-12 10:25:27,389 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6619981325863679 [2022-07-12 10:25:27,389 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1418 transitions. [2022-07-12 10:25:27,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1418 transitions. [2022-07-12 10:25:27,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:27,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1418 transitions. [2022-07-12 10:25:27,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 67.52380952380952) internal successors, (1418), 21 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,398 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,398 INFO L186 Difference]: Start difference. First operand has 130 places, 97 transitions, 405 flow. Second operand 21 states and 1418 transitions. [2022-07-12 10:25:27,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 156 transitions, 1112 flow [2022-07-12 10:25:27,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 156 transitions, 1001 flow, removed 41 selfloop flow, removed 7 redundant places. [2022-07-12 10:25:27,408 INFO L242 Difference]: Finished difference. Result has 152 places, 109 transitions, 552 flow [2022-07-12 10:25:27,408 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=552, PETRI_PLACES=152, PETRI_TRANSITIONS=109} [2022-07-12 10:25:27,411 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 61 predicate places. [2022-07-12 10:25:27,411 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 109 transitions, 552 flow [2022-07-12 10:25:27,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,411 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:27,411 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:27,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:25:27,412 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:27,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:27,413 INFO L85 PathProgramCache]: Analyzing trace with hash 397407754, now seen corresponding path program 4 times [2022-07-12 10:25:27,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:27,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410326398] [2022-07-12 10:25:27,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:27,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:27,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:27,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:27,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410326398] [2022-07-12 10:25:27,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410326398] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:27,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:27,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:27,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068315076] [2022-07-12 10:25:27,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:27,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:27,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:27,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:27,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:27,594 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:27,594 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 109 transitions, 552 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,595 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:27,595 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:27,595 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:27,893 INFO L129 PetriNetUnfolder]: 113/436 cut-off events. [2022-07-12 10:25:27,893 INFO L130 PetriNetUnfolder]: For 2600/2606 co-relation queries the response was YES. [2022-07-12 10:25:27,896 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1876 conditions, 436 events. 113/436 cut-off events. For 2600/2606 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2145 event pairs, 60 based on Foata normal form. 1/422 useless extension candidates. Maximal degree in co-relation 1786. Up to 168 conditions per place. [2022-07-12 10:25:27,899 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 56 selfloop transitions, 23 changer transitions 28/160 dead transitions. [2022-07-12 10:25:27,899 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 160 transitions, 1387 flow [2022-07-12 10:25:27,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:25:27,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:25:27,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1348 transitions. [2022-07-12 10:25:27,905 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6607843137254902 [2022-07-12 10:25:27,905 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1348 transitions. [2022-07-12 10:25:27,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1348 transitions. [2022-07-12 10:25:27,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:27,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1348 transitions. [2022-07-12 10:25:27,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 67.4) internal successors, (1348), 20 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,916 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,917 INFO L186 Difference]: Start difference. First operand has 152 places, 109 transitions, 552 flow. Second operand 20 states and 1348 transitions. [2022-07-12 10:25:27,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 160 transitions, 1387 flow [2022-07-12 10:25:27,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 160 transitions, 1227 flow, removed 80 selfloop flow, removed 9 redundant places. [2022-07-12 10:25:27,931 INFO L242 Difference]: Finished difference. Result has 164 places, 118 transitions, 696 flow [2022-07-12 10:25:27,931 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=696, PETRI_PLACES=164, PETRI_TRANSITIONS=118} [2022-07-12 10:25:27,932 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 73 predicate places. [2022-07-12 10:25:27,933 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 118 transitions, 696 flow [2022-07-12 10:25:27,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,933 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:27,933 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] [2022-07-12 10:25:27,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:25:27,934 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:27,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:27,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1790540224, now seen corresponding path program 1 times [2022-07-12 10:25:27,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:27,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576804082] [2022-07-12 10:25:27,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:27,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:27,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:27,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:27,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:27,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576804082] [2022-07-12 10:25:27,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576804082] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:27,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:27,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:27,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109562282] [2022-07-12 10:25:27,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:27,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:27,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:27,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:27,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:27,998 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-07-12 10:25:27,998 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 118 transitions, 696 flow. Second operand has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,999 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:27,999 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-07-12 10:25:27,999 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:28,085 INFO L129 PetriNetUnfolder]: 69/417 cut-off events. [2022-07-12 10:25:28,086 INFO L130 PetriNetUnfolder]: For 2279/2291 co-relation queries the response was YES. [2022-07-12 10:25:28,089 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1596 conditions, 417 events. 69/417 cut-off events. For 2279/2291 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2099 event pairs, 34 based on Foata normal form. 8/401 useless extension candidates. Maximal degree in co-relation 1501. Up to 52 conditions per place. [2022-07-12 10:25:28,091 INFO L132 encePairwiseOnDemand]: 94/102 looper letters, 20 selfloop transitions, 8 changer transitions 0/130 dead transitions. [2022-07-12 10:25:28,091 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 130 transitions, 786 flow [2022-07-12 10:25:28,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:25:28,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:25:28,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 440 transitions. [2022-07-12 10:25:28,093 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8627450980392157 [2022-07-12 10:25:28,093 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 440 transitions. [2022-07-12 10:25:28,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 440 transitions. [2022-07-12 10:25:28,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:28,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 440 transitions. [2022-07-12 10:25:28,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,097 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,097 INFO L186 Difference]: Start difference. First operand has 164 places, 118 transitions, 696 flow. Second operand 5 states and 440 transitions. [2022-07-12 10:25:28,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 130 transitions, 786 flow [2022-07-12 10:25:28,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 130 transitions, 728 flow, removed 22 selfloop flow, removed 12 redundant places. [2022-07-12 10:25:28,110 INFO L242 Difference]: Finished difference. Result has 147 places, 122 transitions, 686 flow [2022-07-12 10:25:28,111 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=686, PETRI_PLACES=147, PETRI_TRANSITIONS=122} [2022-07-12 10:25:28,111 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 56 predicate places. [2022-07-12 10:25:28,111 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 122 transitions, 686 flow [2022-07-12 10:25:28,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,112 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:28,112 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:28,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:25:28,113 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:28,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:28,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2048059198, now seen corresponding path program 2 times [2022-07-12 10:25:28,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:28,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53528561] [2022-07-12 10:25:28,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:28,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:28,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:28,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:28,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53528561] [2022-07-12 10:25:28,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53528561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:28,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:28,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:25:28,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699237096] [2022-07-12 10:25:28,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:28,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:25:28,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:28,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:25:28,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:25:28,160 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-07-12 10:25:28,161 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 122 transitions, 686 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,161 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:28,161 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-07-12 10:25:28,161 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:28,231 INFO L129 PetriNetUnfolder]: 61/391 cut-off events. [2022-07-12 10:25:28,232 INFO L130 PetriNetUnfolder]: For 1285/1297 co-relation queries the response was YES. [2022-07-12 10:25:28,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1314 conditions, 391 events. 61/391 cut-off events. For 1285/1297 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1915 event pairs, 31 based on Foata normal form. 7/385 useless extension candidates. Maximal degree in co-relation 1082. Up to 47 conditions per place. [2022-07-12 10:25:28,237 INFO L132 encePairwiseOnDemand]: 94/102 looper letters, 22 selfloop transitions, 7 changer transitions 0/131 dead transitions. [2022-07-12 10:25:28,237 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 131 transitions, 780 flow [2022-07-12 10:25:28,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:25:28,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:25:28,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 354 transitions. [2022-07-12 10:25:28,239 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8676470588235294 [2022-07-12 10:25:28,239 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 354 transitions. [2022-07-12 10:25:28,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 354 transitions. [2022-07-12 10:25:28,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:28,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 354 transitions. [2022-07-12 10:25:28,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,241 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,242 INFO L186 Difference]: Start difference. First operand has 147 places, 122 transitions, 686 flow. Second operand 4 states and 354 transitions. [2022-07-12 10:25:28,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 131 transitions, 780 flow [2022-07-12 10:25:28,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 131 transitions, 778 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:25:28,252 INFO L242 Difference]: Finished difference. Result has 151 places, 124 transitions, 722 flow [2022-07-12 10:25:28,252 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=722, PETRI_PLACES=151, PETRI_TRANSITIONS=124} [2022-07-12 10:25:28,253 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 60 predicate places. [2022-07-12 10:25:28,253 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 124 transitions, 722 flow [2022-07-12 10:25:28,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,253 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:28,254 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:28,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:25:28,254 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:28,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:28,255 INFO L85 PathProgramCache]: Analyzing trace with hash 973234580, now seen corresponding path program 5 times [2022-07-12 10:25:28,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:28,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144434369] [2022-07-12 10:25:28,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:28,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:28,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:28,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:28,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144434369] [2022-07-12 10:25:28,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144434369] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:28,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:28,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:28,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14677714] [2022-07-12 10:25:28,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:28,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:28,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:28,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:28,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:28,376 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:28,376 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 124 transitions, 722 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:28,377 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:28,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:28,745 INFO L129 PetriNetUnfolder]: 134/552 cut-off events. [2022-07-12 10:25:28,746 INFO L130 PetriNetUnfolder]: For 2245/2261 co-relation queries the response was YES. [2022-07-12 10:25:28,749 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2223 conditions, 552 events. 134/552 cut-off events. For 2245/2261 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3033 event pairs, 57 based on Foata normal form. 1/543 useless extension candidates. Maximal degree in co-relation 2055. Up to 193 conditions per place. [2022-07-12 10:25:28,751 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 78 selfloop transitions, 20 changer transitions 28/185 dead transitions. [2022-07-12 10:25:28,751 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 185 transitions, 1533 flow [2022-07-12 10:25:28,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:25:28,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:25:28,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1352 transitions. [2022-07-12 10:25:28,754 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6627450980392157 [2022-07-12 10:25:28,754 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1352 transitions. [2022-07-12 10:25:28,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1352 transitions. [2022-07-12 10:25:28,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:28,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1352 transitions. [2022-07-12 10:25:28,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 67.6) internal successors, (1352), 20 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,761 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,761 INFO L186 Difference]: Start difference. First operand has 151 places, 124 transitions, 722 flow. Second operand 20 states and 1352 transitions. [2022-07-12 10:25:28,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 185 transitions, 1533 flow [2022-07-12 10:25:28,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 185 transitions, 1521 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:28,774 INFO L242 Difference]: Finished difference. Result has 185 places, 134 transitions, 917 flow [2022-07-12 10:25:28,775 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=917, PETRI_PLACES=185, PETRI_TRANSITIONS=134} [2022-07-12 10:25:28,775 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 94 predicate places. [2022-07-12 10:25:28,776 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 134 transitions, 917 flow [2022-07-12 10:25:28,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,776 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:28,776 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:28,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 10:25:28,777 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:28,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:28,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1649984722, now seen corresponding path program 6 times [2022-07-12 10:25:28,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:28,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171141184] [2022-07-12 10:25:28,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:28,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:28,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:28,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:28,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171141184] [2022-07-12 10:25:28,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171141184] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:28,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:28,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:28,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880949148] [2022-07-12 10:25:28,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:28,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:28,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:28,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:28,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:28,881 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:28,881 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 134 transitions, 917 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:28,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:28,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:29,254 INFO L129 PetriNetUnfolder]: 131/559 cut-off events. [2022-07-12 10:25:29,254 INFO L130 PetriNetUnfolder]: For 4526/4545 co-relation queries the response was YES. [2022-07-12 10:25:29,258 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2696 conditions, 559 events. 131/559 cut-off events. For 4526/4545 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3189 event pairs, 40 based on Foata normal form. 1/552 useless extension candidates. Maximal degree in co-relation 2569. Up to 125 conditions per place. [2022-07-12 10:25:29,261 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 115 selfloop transitions, 24 changer transitions 40/238 dead transitions. [2022-07-12 10:25:29,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 238 transitions, 2380 flow [2022-07-12 10:25:29,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:25:29,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:25:29,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1624 transitions. [2022-07-12 10:25:29,264 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6633986928104575 [2022-07-12 10:25:29,264 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1624 transitions. [2022-07-12 10:25:29,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1624 transitions. [2022-07-12 10:25:29,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:29,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1624 transitions. [2022-07-12 10:25:29,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 67.66666666666667) internal successors, (1624), 24 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:29,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:29,273 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:29,273 INFO L186 Difference]: Start difference. First operand has 185 places, 134 transitions, 917 flow. Second operand 24 states and 1624 transitions. [2022-07-12 10:25:29,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 238 transitions, 2380 flow [2022-07-12 10:25:29,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 238 transitions, 2170 flow, removed 105 selfloop flow, removed 9 redundant places. [2022-07-12 10:25:29,295 INFO L242 Difference]: Finished difference. Result has 208 places, 137 transitions, 1042 flow [2022-07-12 10:25:29,295 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1042, PETRI_PLACES=208, PETRI_TRANSITIONS=137} [2022-07-12 10:25:29,296 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 117 predicate places. [2022-07-12 10:25:29,296 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 137 transitions, 1042 flow [2022-07-12 10:25:29,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:29,296 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:29,297 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:29,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 10:25:29,297 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:29,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:29,297 INFO L85 PathProgramCache]: Analyzing trace with hash 624016976, now seen corresponding path program 7 times [2022-07-12 10:25:29,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:29,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161396292] [2022-07-12 10:25:29,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:29,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:29,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:29,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:29,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161396292] [2022-07-12 10:25:29,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161396292] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:29,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:29,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:29,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640287809] [2022-07-12 10:25:29,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:29,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:29,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:29,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:29,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:29,414 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:29,414 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 137 transitions, 1042 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:29,415 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:29,415 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:29,415 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:29,823 INFO L129 PetriNetUnfolder]: 127/562 cut-off events. [2022-07-12 10:25:29,823 INFO L130 PetriNetUnfolder]: For 4693/4705 co-relation queries the response was YES. [2022-07-12 10:25:29,828 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2751 conditions, 562 events. 127/562 cut-off events. For 4693/4705 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3230 event pairs, 74 based on Foata normal form. 3/556 useless extension candidates. Maximal degree in co-relation 2639. Up to 245 conditions per place. [2022-07-12 10:25:29,831 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 68 selfloop transitions, 26 changer transitions 34/187 dead transitions. [2022-07-12 10:25:29,831 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 187 transitions, 1910 flow [2022-07-12 10:25:29,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:25:29,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:25:29,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1478 transitions. [2022-07-12 10:25:29,834 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6586452762923352 [2022-07-12 10:25:29,834 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1478 transitions. [2022-07-12 10:25:29,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1478 transitions. [2022-07-12 10:25:29,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:29,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1478 transitions. [2022-07-12 10:25:29,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 67.18181818181819) internal successors, (1478), 22 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:29,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:29,842 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:29,842 INFO L186 Difference]: Start difference. First operand has 208 places, 137 transitions, 1042 flow. Second operand 22 states and 1478 transitions. [2022-07-12 10:25:29,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 187 transitions, 1910 flow [2022-07-12 10:25:29,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 187 transitions, 1840 flow, removed 25 selfloop flow, removed 18 redundant places. [2022-07-12 10:25:29,868 INFO L242 Difference]: Finished difference. Result has 208 places, 137 transitions, 1097 flow [2022-07-12 10:25:29,869 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1097, PETRI_PLACES=208, PETRI_TRANSITIONS=137} [2022-07-12 10:25:29,869 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 117 predicate places. [2022-07-12 10:25:29,870 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 137 transitions, 1097 flow [2022-07-12 10:25:29,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:29,870 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:29,870 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:29,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 10:25:29,871 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:29,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:29,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1308203306, now seen corresponding path program 8 times [2022-07-12 10:25:29,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:29,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414107763] [2022-07-12 10:25:29,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:29,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:29,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:29,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:29,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414107763] [2022-07-12 10:25:29,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414107763] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:29,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:29,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:29,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923909182] [2022-07-12 10:25:29,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:29,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:29,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:29,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:29,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:29,985 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:29,986 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 137 transitions, 1097 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:29,986 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:29,986 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:29,986 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:30,261 INFO L129 PetriNetUnfolder]: 114/512 cut-off events. [2022-07-12 10:25:30,262 INFO L130 PetriNetUnfolder]: For 4368/4387 co-relation queries the response was YES. [2022-07-12 10:25:30,266 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2539 conditions, 512 events. 114/512 cut-off events. For 4368/4387 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2793 event pairs, 74 based on Foata normal form. 7/510 useless extension candidates. Maximal degree in co-relation 2395. Up to 243 conditions per place. [2022-07-12 10:25:30,269 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 59 selfloop transitions, 14 changer transitions 31/163 dead transitions. [2022-07-12 10:25:30,270 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 163 transitions, 1631 flow [2022-07-12 10:25:30,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:30,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:30,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1209 transitions. [2022-07-12 10:25:30,272 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6584967320261438 [2022-07-12 10:25:30,272 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1209 transitions. [2022-07-12 10:25:30,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1209 transitions. [2022-07-12 10:25:30,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:30,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1209 transitions. [2022-07-12 10:25:30,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.16666666666667) internal successors, (1209), 18 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:30,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:30,280 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:30,281 INFO L186 Difference]: Start difference. First operand has 208 places, 137 transitions, 1097 flow. Second operand 18 states and 1209 transitions. [2022-07-12 10:25:30,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 163 transitions, 1631 flow [2022-07-12 10:25:30,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 163 transitions, 1506 flow, removed 45 selfloop flow, removed 17 redundant places. [2022-07-12 10:25:30,305 INFO L242 Difference]: Finished difference. Result has 201 places, 122 transitions, 848 flow [2022-07-12 10:25:30,305 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=848, PETRI_PLACES=201, PETRI_TRANSITIONS=122} [2022-07-12 10:25:30,306 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 110 predicate places. [2022-07-12 10:25:30,307 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 122 transitions, 848 flow [2022-07-12 10:25:30,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:30,307 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:30,307 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:30,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 10:25:30,308 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:30,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:30,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1813419210, now seen corresponding path program 9 times [2022-07-12 10:25:30,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:30,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573225769] [2022-07-12 10:25:30,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:30,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:30,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:30,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:30,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573225769] [2022-07-12 10:25:30,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573225769] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:30,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:30,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:30,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634876819] [2022-07-12 10:25:30,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:30,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:30,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:30,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:30,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:30,425 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:30,425 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 122 transitions, 848 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:30,426 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:30,426 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:30,426 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:30,725 INFO L129 PetriNetUnfolder]: 116/511 cut-off events. [2022-07-12 10:25:30,725 INFO L130 PetriNetUnfolder]: For 3976/3991 co-relation queries the response was YES. [2022-07-12 10:25:30,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2505 conditions, 511 events. 116/511 cut-off events. For 3976/3991 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2752 event pairs, 80 based on Foata normal form. 3/503 useless extension candidates. Maximal degree in co-relation 2444. Up to 243 conditions per place. [2022-07-12 10:25:30,732 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 56 selfloop transitions, 22 changer transitions 21/158 dead transitions. [2022-07-12 10:25:30,733 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 158 transitions, 1551 flow [2022-07-12 10:25:30,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:30,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:30,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1215 transitions. [2022-07-12 10:25:30,735 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6617647058823529 [2022-07-12 10:25:30,735 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1215 transitions. [2022-07-12 10:25:30,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1215 transitions. [2022-07-12 10:25:30,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:30,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1215 transitions. [2022-07-12 10:25:30,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.5) internal successors, (1215), 18 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:30,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:30,742 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:30,742 INFO L186 Difference]: Start difference. First operand has 201 places, 122 transitions, 848 flow. Second operand 18 states and 1215 transitions. [2022-07-12 10:25:30,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 158 transitions, 1551 flow [2022-07-12 10:25:30,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 158 transitions, 1378 flow, removed 40 selfloop flow, removed 18 redundant places. [2022-07-12 10:25:30,761 INFO L242 Difference]: Finished difference. Result has 186 places, 131 transitions, 971 flow [2022-07-12 10:25:30,762 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=971, PETRI_PLACES=186, PETRI_TRANSITIONS=131} [2022-07-12 10:25:30,762 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 95 predicate places. [2022-07-12 10:25:30,762 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 131 transitions, 971 flow [2022-07-12 10:25:30,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:30,763 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:30,764 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:30,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 10:25:30,764 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:30,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:30,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1811456982, now seen corresponding path program 10 times [2022-07-12 10:25:30,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:30,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200820310] [2022-07-12 10:25:30,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:30,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:30,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:30,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:30,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:30,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200820310] [2022-07-12 10:25:30,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200820310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:30,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:30,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:30,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92013578] [2022-07-12 10:25:30,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:30,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:30,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:30,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:30,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:30,880 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:30,881 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 131 transitions, 971 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:30,881 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:30,881 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:30,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:31,193 INFO L129 PetriNetUnfolder]: 113/513 cut-off events. [2022-07-12 10:25:31,194 INFO L130 PetriNetUnfolder]: For 3249/3262 co-relation queries the response was YES. [2022-07-12 10:25:31,197 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2366 conditions, 513 events. 113/513 cut-off events. For 3249/3262 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2784 event pairs, 78 based on Foata normal form. 3/505 useless extension candidates. Maximal degree in co-relation 2309. Up to 243 conditions per place. [2022-07-12 10:25:31,200 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 57 selfloop transitions, 24 changer transitions 22/162 dead transitions. [2022-07-12 10:25:31,200 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 162 transitions, 1583 flow [2022-07-12 10:25:31,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:25:31,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:25:31,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1151 transitions. [2022-07-12 10:25:31,202 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6637831603229527 [2022-07-12 10:25:31,203 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1151 transitions. [2022-07-12 10:25:31,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1151 transitions. [2022-07-12 10:25:31,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:31,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1151 transitions. [2022-07-12 10:25:31,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.70588235294117) internal successors, (1151), 17 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:31,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:31,208 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:31,208 INFO L186 Difference]: Start difference. First operand has 186 places, 131 transitions, 971 flow. Second operand 17 states and 1151 transitions. [2022-07-12 10:25:31,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 162 transitions, 1583 flow [2022-07-12 10:25:31,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 162 transitions, 1512 flow, removed 30 selfloop flow, removed 5 redundant places. [2022-07-12 10:25:31,226 INFO L242 Difference]: Finished difference. Result has 198 places, 135 transitions, 1074 flow [2022-07-12 10:25:31,227 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1074, PETRI_PLACES=198, PETRI_TRANSITIONS=135} [2022-07-12 10:25:31,227 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 107 predicate places. [2022-07-12 10:25:31,228 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 135 transitions, 1074 flow [2022-07-12 10:25:31,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:31,228 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:31,228 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:31,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 10:25:31,229 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:31,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:31,229 INFO L85 PathProgramCache]: Analyzing trace with hash -66650394, now seen corresponding path program 11 times [2022-07-12 10:25:31,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:31,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592100201] [2022-07-12 10:25:31,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:31,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:31,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:31,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:31,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592100201] [2022-07-12 10:25:31,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592100201] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:31,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:31,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:31,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731941177] [2022-07-12 10:25:31,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:31,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:31,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:31,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:31,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:31,334 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:31,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 135 transitions, 1074 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:31,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:31,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:31,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:31,603 INFO L129 PetriNetUnfolder]: 110/508 cut-off events. [2022-07-12 10:25:31,603 INFO L130 PetriNetUnfolder]: For 3304/3317 co-relation queries the response was YES. [2022-07-12 10:25:31,607 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2347 conditions, 508 events. 110/508 cut-off events. For 3304/3317 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2758 event pairs, 78 based on Foata normal form. 3/500 useless extension candidates. Maximal degree in co-relation 2284. Up to 243 conditions per place. [2022-07-12 10:25:31,610 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 57 selfloop transitions, 14 changer transitions 30/160 dead transitions. [2022-07-12 10:25:31,610 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 160 transitions, 1566 flow [2022-07-12 10:25:31,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:25:31,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:25:31,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1150 transitions. [2022-07-12 10:25:31,616 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6632064590542099 [2022-07-12 10:25:31,616 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1150 transitions. [2022-07-12 10:25:31,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1150 transitions. [2022-07-12 10:25:31,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:31,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1150 transitions. [2022-07-12 10:25:31,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.6470588235294) internal successors, (1150), 17 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:31,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:31,624 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:31,625 INFO L186 Difference]: Start difference. First operand has 198 places, 135 transitions, 1074 flow. Second operand 17 states and 1150 transitions. [2022-07-12 10:25:31,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 160 transitions, 1566 flow [2022-07-12 10:25:31,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 160 transitions, 1471 flow, removed 26 selfloop flow, removed 8 redundant places. [2022-07-12 10:25:31,646 INFO L242 Difference]: Finished difference. Result has 205 places, 126 transitions, 900 flow [2022-07-12 10:25:31,646 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1001, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=900, PETRI_PLACES=205, PETRI_TRANSITIONS=126} [2022-07-12 10:25:31,647 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 114 predicate places. [2022-07-12 10:25:31,647 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 126 transitions, 900 flow [2022-07-12 10:25:31,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:31,648 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:31,648 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:31,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 10:25:31,648 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:31,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:31,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1478253392, now seen corresponding path program 12 times [2022-07-12 10:25:31,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:31,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210642256] [2022-07-12 10:25:31,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:31,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:31,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:31,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:31,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:31,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210642256] [2022-07-12 10:25:31,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210642256] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:31,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:31,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:31,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459060798] [2022-07-12 10:25:31,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:31,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:31,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:31,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:31,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:31,756 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:31,757 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 126 transitions, 900 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:31,757 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:31,757 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:31,757 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:32,024 INFO L129 PetriNetUnfolder]: 100/468 cut-off events. [2022-07-12 10:25:32,024 INFO L130 PetriNetUnfolder]: For 3049/3063 co-relation queries the response was YES. [2022-07-12 10:25:32,028 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2087 conditions, 468 events. 100/468 cut-off events. For 3049/3063 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2403 event pairs, 74 based on Foata normal form. 3/462 useless extension candidates. Maximal degree in co-relation 2023. Up to 230 conditions per place. [2022-07-12 10:25:32,030 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 47 selfloop transitions, 3 changer transitions 33/142 dead transitions. [2022-07-12 10:25:32,030 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 142 transitions, 1230 flow [2022-07-12 10:25:32,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:32,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:32,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1205 transitions. [2022-07-12 10:25:32,037 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.656318082788671 [2022-07-12 10:25:32,038 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1205 transitions. [2022-07-12 10:25:32,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1205 transitions. [2022-07-12 10:25:32,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:32,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1205 transitions. [2022-07-12 10:25:32,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 66.94444444444444) internal successors, (1205), 18 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:32,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:32,048 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:32,048 INFO L186 Difference]: Start difference. First operand has 205 places, 126 transitions, 900 flow. Second operand 18 states and 1205 transitions. [2022-07-12 10:25:32,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 142 transitions, 1230 flow [2022-07-12 10:25:32,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 142 transitions, 1112 flow, removed 25 selfloop flow, removed 22 redundant places. [2022-07-12 10:25:32,065 INFO L242 Difference]: Finished difference. Result has 189 places, 106 transitions, 575 flow [2022-07-12 10:25:32,066 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=575, PETRI_PLACES=189, PETRI_TRANSITIONS=106} [2022-07-12 10:25:32,066 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 98 predicate places. [2022-07-12 10:25:32,066 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 106 transitions, 575 flow [2022-07-12 10:25:32,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:32,067 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:32,067 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:32,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 10:25:32,067 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:32,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:32,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1540170770, now seen corresponding path program 13 times [2022-07-12 10:25:32,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:32,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904710104] [2022-07-12 10:25:32,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:32,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:32,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:32,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:32,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904710104] [2022-07-12 10:25:32,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904710104] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:32,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:32,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:32,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359965289] [2022-07-12 10:25:32,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:32,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:32,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:32,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:32,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:32,175 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:32,176 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 106 transitions, 575 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:32,176 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:32,176 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:32,176 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:32,525 INFO L129 PetriNetUnfolder]: 105/471 cut-off events. [2022-07-12 10:25:32,526 INFO L130 PetriNetUnfolder]: For 2883/2889 co-relation queries the response was YES. [2022-07-12 10:25:32,529 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2095 conditions, 471 events. 105/471 cut-off events. For 2883/2889 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2406 event pairs, 46 based on Foata normal form. 1/466 useless extension candidates. Maximal degree in co-relation 2040. Up to 162 conditions per place. [2022-07-12 10:25:32,532 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 63 selfloop transitions, 19 changer transitions 28/169 dead transitions. [2022-07-12 10:25:32,532 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 169 transitions, 1480 flow [2022-07-12 10:25:32,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:25:32,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:25:32,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1477 transitions. [2022-07-12 10:25:32,536 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6581996434937611 [2022-07-12 10:25:32,536 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1477 transitions. [2022-07-12 10:25:32,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1477 transitions. [2022-07-12 10:25:32,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:32,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1477 transitions. [2022-07-12 10:25:32,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 67.13636363636364) internal successors, (1477), 22 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:32,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:32,546 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:32,546 INFO L186 Difference]: Start difference. First operand has 189 places, 106 transitions, 575 flow. Second operand 22 states and 1477 transitions. [2022-07-12 10:25:32,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 169 transitions, 1480 flow [2022-07-12 10:25:32,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 169 transitions, 1295 flow, removed 40 selfloop flow, removed 21 redundant places. [2022-07-12 10:25:32,559 INFO L242 Difference]: Finished difference. Result has 175 places, 117 transitions, 709 flow [2022-07-12 10:25:32,559 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=709, PETRI_PLACES=175, PETRI_TRANSITIONS=117} [2022-07-12 10:25:32,559 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 84 predicate places. [2022-07-12 10:25:32,560 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 117 transitions, 709 flow [2022-07-12 10:25:32,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:32,560 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:32,560 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:32,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 10:25:32,561 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:32,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:32,561 INFO L85 PathProgramCache]: Analyzing trace with hash 498665044, now seen corresponding path program 14 times [2022-07-12 10:25:32,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:32,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083709320] [2022-07-12 10:25:32,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:32,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:32,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:32,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:32,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083709320] [2022-07-12 10:25:32,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083709320] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:32,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:32,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:32,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790997988] [2022-07-12 10:25:32,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:32,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:32,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:32,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:32,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:32,688 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:32,688 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 117 transitions, 709 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:32,689 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:32,689 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:32,689 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:33,002 INFO L129 PetriNetUnfolder]: 102/455 cut-off events. [2022-07-12 10:25:33,002 INFO L130 PetriNetUnfolder]: For 2221/2227 co-relation queries the response was YES. [2022-07-12 10:25:33,005 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2023 conditions, 455 events. 102/455 cut-off events. For 2221/2227 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2282 event pairs, 47 based on Foata normal form. 1/449 useless extension candidates. Maximal degree in co-relation 1970. Up to 160 conditions per place. [2022-07-12 10:25:33,007 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 54 selfloop transitions, 21 changer transitions 28/162 dead transitions. [2022-07-12 10:25:33,008 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 162 transitions, 1445 flow [2022-07-12 10:25:33,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 10:25:33,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-12 10:25:33,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1414 transitions. [2022-07-12 10:25:33,011 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6601307189542484 [2022-07-12 10:25:33,011 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1414 transitions. [2022-07-12 10:25:33,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1414 transitions. [2022-07-12 10:25:33,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:33,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1414 transitions. [2022-07-12 10:25:33,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 67.33333333333333) internal successors, (1414), 21 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:33,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:33,016 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:33,017 INFO L186 Difference]: Start difference. First operand has 175 places, 117 transitions, 709 flow. Second operand 21 states and 1414 transitions. [2022-07-12 10:25:33,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 162 transitions, 1445 flow [2022-07-12 10:25:33,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 162 transitions, 1347 flow, removed 43 selfloop flow, removed 11 redundant places. [2022-07-12 10:25:33,030 INFO L242 Difference]: Finished difference. Result has 184 places, 119 transitions, 808 flow [2022-07-12 10:25:33,030 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=808, PETRI_PLACES=184, PETRI_TRANSITIONS=119} [2022-07-12 10:25:33,031 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 93 predicate places. [2022-07-12 10:25:33,031 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 119 transitions, 808 flow [2022-07-12 10:25:33,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:33,031 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:33,032 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:33,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 10:25:33,033 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:33,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:33,034 INFO L85 PathProgramCache]: Analyzing trace with hash 2009897988, now seen corresponding path program 15 times [2022-07-12 10:25:33,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:33,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783932304] [2022-07-12 10:25:33,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:33,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:33,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:33,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:33,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783932304] [2022-07-12 10:25:33,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783932304] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:33,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:33,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:33,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929753214] [2022-07-12 10:25:33,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:33,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:33,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:33,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:33,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:33,131 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:33,131 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 119 transitions, 808 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:33,131 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:33,131 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:33,132 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:33,395 INFO L129 PetriNetUnfolder]: 99/458 cut-off events. [2022-07-12 10:25:33,396 INFO L130 PetriNetUnfolder]: For 2894/2900 co-relation queries the response was YES. [2022-07-12 10:25:33,399 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2126 conditions, 458 events. 99/458 cut-off events. For 2894/2900 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2293 event pairs, 44 based on Foata normal form. 1/452 useless extension candidates. Maximal degree in co-relation 2069. Up to 165 conditions per place. [2022-07-12 10:25:33,402 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 59 selfloop transitions, 22 changer transitions 25/165 dead transitions. [2022-07-12 10:25:33,402 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 165 transitions, 1527 flow [2022-07-12 10:25:33,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:25:33,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:25:33,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1088 transitions. [2022-07-12 10:25:33,405 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2022-07-12 10:25:33,405 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1088 transitions. [2022-07-12 10:25:33,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1088 transitions. [2022-07-12 10:25:33,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:33,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1088 transitions. [2022-07-12 10:25:33,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 68.0) internal successors, (1088), 16 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:33,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:33,410 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:33,410 INFO L186 Difference]: Start difference. First operand has 184 places, 119 transitions, 808 flow. Second operand 16 states and 1088 transitions. [2022-07-12 10:25:33,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 165 transitions, 1527 flow [2022-07-12 10:25:33,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 165 transitions, 1382 flow, removed 47 selfloop flow, removed 16 redundant places. [2022-07-12 10:25:33,425 INFO L242 Difference]: Finished difference. Result has 179 places, 124 transitions, 870 flow [2022-07-12 10:25:33,425 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=870, PETRI_PLACES=179, PETRI_TRANSITIONS=124} [2022-07-12 10:25:33,426 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 88 predicate places. [2022-07-12 10:25:33,426 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 124 transitions, 870 flow [2022-07-12 10:25:33,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:33,426 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:33,427 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:33,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 10:25:33,427 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:33,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:33,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1611609298, now seen corresponding path program 16 times [2022-07-12 10:25:33,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:33,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367507838] [2022-07-12 10:25:33,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:33,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:33,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:33,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:33,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367507838] [2022-07-12 10:25:33,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367507838] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:33,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:33,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:33,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776031523] [2022-07-12 10:25:33,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:33,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:33,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:33,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:33,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:33,540 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:33,541 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 124 transitions, 870 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:33,541 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:33,541 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:33,541 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:33,778 INFO L129 PetriNetUnfolder]: 90/424 cut-off events. [2022-07-12 10:25:33,778 INFO L130 PetriNetUnfolder]: For 2145/2151 co-relation queries the response was YES. [2022-07-12 10:25:33,781 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1887 conditions, 424 events. 90/424 cut-off events. For 2145/2151 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2078 event pairs, 44 based on Foata normal form. 1/418 useless extension candidates. Maximal degree in co-relation 1834. Up to 159 conditions per place. [2022-07-12 10:25:33,783 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 55 selfloop transitions, 10 changer transitions 30/154 dead transitions. [2022-07-12 10:25:33,783 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 154 transitions, 1324 flow [2022-07-12 10:25:33,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:33,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:33,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1210 transitions. [2022-07-12 10:25:33,786 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.659041394335512 [2022-07-12 10:25:33,786 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1210 transitions. [2022-07-12 10:25:33,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1210 transitions. [2022-07-12 10:25:33,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:33,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1210 transitions. [2022-07-12 10:25:33,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.22222222222223) internal successors, (1210), 18 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:33,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:33,791 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:33,791 INFO L186 Difference]: Start difference. First operand has 179 places, 124 transitions, 870 flow. Second operand 18 states and 1210 transitions. [2022-07-12 10:25:33,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 154 transitions, 1324 flow [2022-07-12 10:25:33,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 154 transitions, 1220 flow, removed 30 selfloop flow, removed 9 redundant places. [2022-07-12 10:25:33,804 INFO L242 Difference]: Finished difference. Result has 187 places, 109 transitions, 629 flow [2022-07-12 10:25:33,804 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=629, PETRI_PLACES=187, PETRI_TRANSITIONS=109} [2022-07-12 10:25:33,805 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 96 predicate places. [2022-07-12 10:25:33,805 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 109 transitions, 629 flow [2022-07-12 10:25:33,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:33,806 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:33,806 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:33,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 10:25:33,806 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:33,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:33,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1377986538, now seen corresponding path program 17 times [2022-07-12 10:25:33,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:33,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5637195] [2022-07-12 10:25:33,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:33,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:33,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:33,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:33,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5637195] [2022-07-12 10:25:33,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5637195] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:33,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:33,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:33,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777709559] [2022-07-12 10:25:33,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:33,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:33,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:33,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:33,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:33,913 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:33,913 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 109 transitions, 629 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:33,914 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:33,914 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:33,914 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:34,198 INFO L129 PetriNetUnfolder]: 95/429 cut-off events. [2022-07-12 10:25:34,199 INFO L130 PetriNetUnfolder]: For 2214/2220 co-relation queries the response was YES. [2022-07-12 10:25:34,202 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1925 conditions, 429 events. 95/429 cut-off events. For 2214/2220 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2078 event pairs, 45 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 1871. Up to 159 conditions per place. [2022-07-12 10:25:34,204 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 48 selfloop transitions, 20 changer transitions 23/150 dead transitions. [2022-07-12 10:25:34,204 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 150 transitions, 1283 flow [2022-07-12 10:25:34,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:34,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:34,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1218 transitions. [2022-07-12 10:25:34,206 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6633986928104575 [2022-07-12 10:25:34,206 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1218 transitions. [2022-07-12 10:25:34,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1218 transitions. [2022-07-12 10:25:34,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:34,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1218 transitions. [2022-07-12 10:25:34,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.66666666666667) internal successors, (1218), 18 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:34,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:34,211 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:34,212 INFO L186 Difference]: Start difference. First operand has 187 places, 109 transitions, 629 flow. Second operand 18 states and 1218 transitions. [2022-07-12 10:25:34,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 150 transitions, 1283 flow [2022-07-12 10:25:34,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 150 transitions, 1156 flow, removed 24 selfloop flow, removed 17 redundant places. [2022-07-12 10:25:34,223 INFO L242 Difference]: Finished difference. Result has 173 places, 118 transitions, 780 flow [2022-07-12 10:25:34,223 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=780, PETRI_PLACES=173, PETRI_TRANSITIONS=118} [2022-07-12 10:25:34,224 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 82 predicate places. [2022-07-12 10:25:34,225 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 118 transitions, 780 flow [2022-07-12 10:25:34,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:34,225 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:34,225 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:34,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 10:25:34,226 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:34,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:34,226 INFO L85 PathProgramCache]: Analyzing trace with hash -56417466, now seen corresponding path program 18 times [2022-07-12 10:25:34,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:34,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829590089] [2022-07-12 10:25:34,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:34,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:34,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:34,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:34,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829590089] [2022-07-12 10:25:34,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829590089] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:34,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:34,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:34,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202723287] [2022-07-12 10:25:34,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:34,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:34,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:34,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:34,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:34,333 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:34,333 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 118 transitions, 780 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:34,333 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:34,333 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:34,334 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:34,602 INFO L129 PetriNetUnfolder]: 91/433 cut-off events. [2022-07-12 10:25:34,602 INFO L130 PetriNetUnfolder]: For 2017/2023 co-relation queries the response was YES. [2022-07-12 10:25:34,605 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1868 conditions, 433 events. 91/433 cut-off events. For 2017/2023 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2112 event pairs, 41 based on Foata normal form. 1/428 useless extension candidates. Maximal degree in co-relation 1817. Up to 159 conditions per place. [2022-07-12 10:25:34,607 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 49 selfloop transitions, 22 changer transitions 24/154 dead transitions. [2022-07-12 10:25:34,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 154 transitions, 1365 flow [2022-07-12 10:25:34,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:25:34,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:25:34,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1154 transitions. [2022-07-12 10:25:34,609 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6655132641291811 [2022-07-12 10:25:34,610 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1154 transitions. [2022-07-12 10:25:34,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1154 transitions. [2022-07-12 10:25:34,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:34,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1154 transitions. [2022-07-12 10:25:34,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.88235294117646) internal successors, (1154), 17 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:34,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:34,614 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:34,614 INFO L186 Difference]: Start difference. First operand has 173 places, 118 transitions, 780 flow. Second operand 17 states and 1154 transitions. [2022-07-12 10:25:34,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 154 transitions, 1365 flow [2022-07-12 10:25:34,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 154 transitions, 1282 flow, removed 37 selfloop flow, removed 5 redundant places. [2022-07-12 10:25:34,627 INFO L242 Difference]: Finished difference. Result has 185 places, 122 transitions, 877 flow [2022-07-12 10:25:34,627 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=877, PETRI_PLACES=185, PETRI_TRANSITIONS=122} [2022-07-12 10:25:34,628 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 94 predicate places. [2022-07-12 10:25:34,629 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 122 transitions, 877 flow [2022-07-12 10:25:34,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:34,629 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:34,629 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:34,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 10:25:34,630 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:34,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:34,630 INFO L85 PathProgramCache]: Analyzing trace with hash 679177784, now seen corresponding path program 19 times [2022-07-12 10:25:34,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:34,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121571360] [2022-07-12 10:25:34,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:34,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:34,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:34,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:34,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121571360] [2022-07-12 10:25:34,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121571360] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:34,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:34,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:34,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490517187] [2022-07-12 10:25:34,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:34,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:34,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:34,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:34,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:34,729 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:34,729 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 122 transitions, 877 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:34,729 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:34,729 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:34,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:34,987 INFO L129 PetriNetUnfolder]: 85/416 cut-off events. [2022-07-12 10:25:34,988 INFO L130 PetriNetUnfolder]: For 1946/1952 co-relation queries the response was YES. [2022-07-12 10:25:34,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1809 conditions, 416 events. 85/416 cut-off events. For 1946/1952 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1972 event pairs, 41 based on Foata normal form. 1/411 useless extension candidates. Maximal degree in co-relation 1752. Up to 159 conditions per place. [2022-07-12 10:25:34,993 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 47 selfloop transitions, 13 changer transitions 28/147 dead transitions. [2022-07-12 10:25:34,993 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 147 transitions, 1301 flow [2022-07-12 10:25:34,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:34,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:34,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1213 transitions. [2022-07-12 10:25:34,995 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6606753812636166 [2022-07-12 10:25:34,995 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1213 transitions. [2022-07-12 10:25:34,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1213 transitions. [2022-07-12 10:25:34,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:34,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1213 transitions. [2022-07-12 10:25:34,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.38888888888889) internal successors, (1213), 18 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:35,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:35,000 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:35,000 INFO L186 Difference]: Start difference. First operand has 185 places, 122 transitions, 877 flow. Second operand 18 states and 1213 transitions. [2022-07-12 10:25:35,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 147 transitions, 1301 flow [2022-07-12 10:25:35,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 147 transitions, 1194 flow, removed 33 selfloop flow, removed 8 redundant places. [2022-07-12 10:25:35,014 INFO L242 Difference]: Finished difference. Result has 194 places, 113 transitions, 712 flow [2022-07-12 10:25:35,015 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=712, PETRI_PLACES=194, PETRI_TRANSITIONS=113} [2022-07-12 10:25:35,015 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 103 predicate places. [2022-07-12 10:25:35,015 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 113 transitions, 712 flow [2022-07-12 10:25:35,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:35,016 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:35,016 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:35,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 10:25:35,016 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:35,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:35,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1228370036, now seen corresponding path program 20 times [2022-07-12 10:25:35,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:35,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875985730] [2022-07-12 10:25:35,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:35,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:35,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:35,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:35,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875985730] [2022-07-12 10:25:35,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875985730] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:35,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:35,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:35,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510074849] [2022-07-12 10:25:35,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:35,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:35,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:35,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:35,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:35,121 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:35,121 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 113 transitions, 712 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:35,121 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:35,122 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:35,122 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:35,381 INFO L129 PetriNetUnfolder]: 77/347 cut-off events. [2022-07-12 10:25:35,382 INFO L130 PetriNetUnfolder]: For 1602/1608 co-relation queries the response was YES. [2022-07-12 10:25:35,384 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1498 conditions, 347 events. 77/347 cut-off events. For 1602/1608 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1513 event pairs, 42 based on Foata normal form. 1/341 useless extension candidates. Maximal degree in co-relation 1439. Up to 137 conditions per place. [2022-07-12 10:25:35,386 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 37 selfloop transitions, 2 changer transitions 36/129 dead transitions. [2022-07-12 10:25:35,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 129 transitions, 973 flow [2022-07-12 10:25:35,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:25:35,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:25:35,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1141 transitions. [2022-07-12 10:25:35,388 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6580161476355249 [2022-07-12 10:25:35,388 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1141 transitions. [2022-07-12 10:25:35,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1141 transitions. [2022-07-12 10:25:35,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:35,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1141 transitions. [2022-07-12 10:25:35,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.11764705882354) internal successors, (1141), 17 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:35,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:35,393 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:35,393 INFO L186 Difference]: Start difference. First operand has 194 places, 113 transitions, 712 flow. Second operand 17 states and 1141 transitions. [2022-07-12 10:25:35,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 129 transitions, 973 flow [2022-07-12 10:25:35,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 129 transitions, 869 flow, removed 27 selfloop flow, removed 21 redundant places. [2022-07-12 10:25:35,404 INFO L242 Difference]: Finished difference. Result has 175 places, 87 transitions, 355 flow [2022-07-12 10:25:35,405 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=355, PETRI_PLACES=175, PETRI_TRANSITIONS=87} [2022-07-12 10:25:35,405 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 84 predicate places. [2022-07-12 10:25:35,405 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 87 transitions, 355 flow [2022-07-12 10:25:35,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:35,406 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:35,406 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:35,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 10:25:35,406 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:35,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:35,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1641653018, now seen corresponding path program 1 times [2022-07-12 10:25:35,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:35,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366027332] [2022-07-12 10:25:35,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:35,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:35,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:35,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:35,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366027332] [2022-07-12 10:25:35,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366027332] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:35,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:35,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:25:35,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985078120] [2022-07-12 10:25:35,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:35,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:25:35,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:35,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:25:35,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:25:35,443 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-07-12 10:25:35,443 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 87 transitions, 355 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:35,444 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:35,444 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-07-12 10:25:35,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:35,492 INFO L129 PetriNetUnfolder]: 30/224 cut-off events. [2022-07-12 10:25:35,492 INFO L130 PetriNetUnfolder]: For 751/751 co-relation queries the response was YES. [2022-07-12 10:25:35,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 224 events. 30/224 cut-off events. For 751/751 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 751 event pairs, 25 based on Foata normal form. 1/218 useless extension candidates. Maximal degree in co-relation 703. Up to 25 conditions per place. [2022-07-12 10:25:35,495 INFO L132 encePairwiseOnDemand]: 98/102 looper letters, 17 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2022-07-12 10:25:35,495 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 90 transitions, 404 flow [2022-07-12 10:25:35,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:25:35,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:25:35,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 347 transitions. [2022-07-12 10:25:35,496 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8504901960784313 [2022-07-12 10:25:35,496 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 347 transitions. [2022-07-12 10:25:35,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 347 transitions. [2022-07-12 10:25:35,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:35,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 347 transitions. [2022-07-12 10:25:35,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:35,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:35,498 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:35,498 INFO L186 Difference]: Start difference. First operand has 175 places, 87 transitions, 355 flow. Second operand 4 states and 347 transitions. [2022-07-12 10:25:35,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 90 transitions, 404 flow [2022-07-12 10:25:35,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 90 transitions, 347 flow, removed 16 selfloop flow, removed 23 redundant places. [2022-07-12 10:25:35,502 INFO L242 Difference]: Finished difference. Result has 120 places, 87 transitions, 307 flow [2022-07-12 10:25:35,503 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=307, PETRI_PLACES=120, PETRI_TRANSITIONS=87} [2022-07-12 10:25:35,503 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 29 predicate places. [2022-07-12 10:25:35,503 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 87 transitions, 307 flow [2022-07-12 10:25:35,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:35,504 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:35,504 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:35,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 10:25:35,504 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:35,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:35,505 INFO L85 PathProgramCache]: Analyzing trace with hash 2143138146, now seen corresponding path program 2 times [2022-07-12 10:25:35,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:35,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744113788] [2022-07-12 10:25:35,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:35,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:35,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:35,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:35,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744113788] [2022-07-12 10:25:35,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744113788] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:35,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:35,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:35,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46591881] [2022-07-12 10:25:35,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:35,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:35,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:35,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:35,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:35,552 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-07-12 10:25:35,553 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 87 transitions, 307 flow. Second operand has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:35,553 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:35,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-07-12 10:25:35,553 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:35,593 INFO L129 PetriNetUnfolder]: 17/172 cut-off events. [2022-07-12 10:25:35,593 INFO L130 PetriNetUnfolder]: For 310/310 co-relation queries the response was YES. [2022-07-12 10:25:35,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 172 events. 17/172 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 493 event pairs, 10 based on Foata normal form. 2/171 useless extension candidates. Maximal degree in co-relation 440. Up to 17 conditions per place. [2022-07-12 10:25:35,595 INFO L132 encePairwiseOnDemand]: 97/102 looper letters, 15 selfloop transitions, 6 changer transitions 6/92 dead transitions. [2022-07-12 10:25:35,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 92 transitions, 371 flow [2022-07-12 10:25:35,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:25:35,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:25:35,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 433 transitions. [2022-07-12 10:25:35,596 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8490196078431372 [2022-07-12 10:25:35,596 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 433 transitions. [2022-07-12 10:25:35,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 433 transitions. [2022-07-12 10:25:35,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:35,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 433 transitions. [2022-07-12 10:25:35,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:35,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:35,598 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:35,598 INFO L186 Difference]: Start difference. First operand has 120 places, 87 transitions, 307 flow. Second operand 5 states and 433 transitions. [2022-07-12 10:25:35,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 92 transitions, 371 flow [2022-07-12 10:25:35,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 92 transitions, 340 flow, removed 13 selfloop flow, removed 4 redundant places. [2022-07-12 10:25:35,602 INFO L242 Difference]: Finished difference. Result has 121 places, 83 transitions, 273 flow [2022-07-12 10:25:35,602 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=273, PETRI_PLACES=121, PETRI_TRANSITIONS=83} [2022-07-12 10:25:35,602 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 30 predicate places. [2022-07-12 10:25:35,602 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 83 transitions, 273 flow [2022-07-12 10:25:35,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:35,603 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:35,603 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:35,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 10:25:35,603 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:35,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:35,604 INFO L85 PathProgramCache]: Analyzing trace with hash -384437336, now seen corresponding path program 1 times [2022-07-12 10:25:35,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:35,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630998836] [2022-07-12 10:25:35,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:35,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:35,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:35,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:35,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630998836] [2022-07-12 10:25:35,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630998836] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:35,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:35,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:35,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598353018] [2022-07-12 10:25:35,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:35,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:35,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:35,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:35,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:35,699 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:35,700 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 83 transitions, 273 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:35,700 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:35,700 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:35,700 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:36,023 INFO L129 PetriNetUnfolder]: 49/241 cut-off events. [2022-07-12 10:25:36,024 INFO L130 PetriNetUnfolder]: For 426/427 co-relation queries the response was YES. [2022-07-12 10:25:36,025 INFO L84 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 241 events. 49/241 cut-off events. For 426/427 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 859 event pairs, 0 based on Foata normal form. 1/242 useless extension candidates. Maximal degree in co-relation 700. Up to 35 conditions per place. [2022-07-12 10:25:36,026 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 47 selfloop transitions, 5 changer transitions 41/148 dead transitions. [2022-07-12 10:25:36,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 148 transitions, 888 flow [2022-07-12 10:25:36,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:25:36,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:25:36,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1606 transitions. [2022-07-12 10:25:36,028 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6560457516339869 [2022-07-12 10:25:36,029 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1606 transitions. [2022-07-12 10:25:36,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1606 transitions. [2022-07-12 10:25:36,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:36,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1606 transitions. [2022-07-12 10:25:36,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 66.91666666666667) internal successors, (1606), 24 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) [2022-07-12 10:25:36,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:36,034 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:36,035 INFO L186 Difference]: Start difference. First operand has 121 places, 83 transitions, 273 flow. Second operand 24 states and 1606 transitions. [2022-07-12 10:25:36,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 148 transitions, 888 flow [2022-07-12 10:25:36,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 148 transitions, 796 flow, removed 41 selfloop flow, removed 8 redundant places. [2022-07-12 10:25:36,039 INFO L242 Difference]: Finished difference. Result has 147 places, 83 transitions, 296 flow [2022-07-12 10:25:36,039 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=296, PETRI_PLACES=147, PETRI_TRANSITIONS=83} [2022-07-12 10:25:36,039 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 56 predicate places. [2022-07-12 10:25:36,040 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 83 transitions, 296 flow [2022-07-12 10:25:36,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:36,040 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:36,040 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] [2022-07-12 10:25:36,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-12 10:25:36,041 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:36,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:36,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1395475274, now seen corresponding path program 2 times [2022-07-12 10:25:36,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:36,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778197687] [2022-07-12 10:25:36,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:36,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:36,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:36,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:36,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778197687] [2022-07-12 10:25:36,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778197687] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:36,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:36,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:36,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927586842] [2022-07-12 10:25:36,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:36,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:36,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:36,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:36,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:36,138 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:36,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 83 transitions, 296 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:36,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:36,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:36,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:36,448 INFO L129 PetriNetUnfolder]: 43/235 cut-off events. [2022-07-12 10:25:36,448 INFO L130 PetriNetUnfolder]: For 937/938 co-relation queries the response was YES. [2022-07-12 10:25:36,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 879 conditions, 235 events. 43/235 cut-off events. For 937/938 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 798 event pairs, 5 based on Foata normal form. 1/232 useless extension candidates. Maximal degree in co-relation 837. Up to 27 conditions per place. [2022-07-12 10:25:36,451 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 46 selfloop transitions, 5 changer transitions 40/146 dead transitions. [2022-07-12 10:25:36,451 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 146 transitions, 985 flow [2022-07-12 10:25:36,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:25:36,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:25:36,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1604 transitions. [2022-07-12 10:25:36,453 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6552287581699346 [2022-07-12 10:25:36,453 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1604 transitions. [2022-07-12 10:25:36,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1604 transitions. [2022-07-12 10:25:36,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:36,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1604 transitions. [2022-07-12 10:25:36,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 66.83333333333333) internal successors, (1604), 24 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) [2022-07-12 10:25:36,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:36,459 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:36,459 INFO L186 Difference]: Start difference. First operand has 147 places, 83 transitions, 296 flow. Second operand 24 states and 1604 transitions. [2022-07-12 10:25:36,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 146 transitions, 985 flow [2022-07-12 10:25:36,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 146 transitions, 816 flow, removed 47 selfloop flow, removed 20 redundant places. [2022-07-12 10:25:36,468 INFO L242 Difference]: Finished difference. Result has 151 places, 83 transitions, 308 flow [2022-07-12 10:25:36,468 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=308, PETRI_PLACES=151, PETRI_TRANSITIONS=83} [2022-07-12 10:25:36,470 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 60 predicate places. [2022-07-12 10:25:36,470 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 83 transitions, 308 flow [2022-07-12 10:25:36,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:36,470 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:36,470 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:36,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-12 10:25:36,471 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:36,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:36,471 INFO L85 PathProgramCache]: Analyzing trace with hash 751505554, now seen corresponding path program 3 times [2022-07-12 10:25:36,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:36,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547588276] [2022-07-12 10:25:36,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:36,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:36,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:36,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:36,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547588276] [2022-07-12 10:25:36,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547588276] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:36,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:36,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:36,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538178607] [2022-07-12 10:25:36,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:36,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:36,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:36,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:36,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:36,566 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:36,567 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 83 transitions, 308 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:36,567 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:36,567 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:36,567 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:36,881 INFO L129 PetriNetUnfolder]: 55/276 cut-off events. [2022-07-12 10:25:36,881 INFO L130 PetriNetUnfolder]: For 1467/1469 co-relation queries the response was YES. [2022-07-12 10:25:36,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1138 conditions, 276 events. 55/276 cut-off events. For 1467/1469 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1067 event pairs, 9 based on Foata normal form. 1/276 useless extension candidates. Maximal degree in co-relation 1093. Up to 57 conditions per place. [2022-07-12 10:25:36,885 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 45 selfloop transitions, 12 changer transitions 32/144 dead transitions. [2022-07-12 10:25:36,885 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 144 transitions, 1071 flow [2022-07-12 10:25:36,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:25:36,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:25:36,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1476 transitions. [2022-07-12 10:25:36,887 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6577540106951871 [2022-07-12 10:25:36,887 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1476 transitions. [2022-07-12 10:25:36,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1476 transitions. [2022-07-12 10:25:36,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:36,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1476 transitions. [2022-07-12 10:25:36,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 67.0909090909091) internal successors, (1476), 22 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:36,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:36,892 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:36,893 INFO L186 Difference]: Start difference. First operand has 151 places, 83 transitions, 308 flow. Second operand 22 states and 1476 transitions. [2022-07-12 10:25:36,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 144 transitions, 1071 flow [2022-07-12 10:25:36,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 144 transitions, 901 flow, removed 50 selfloop flow, removed 20 redundant places. [2022-07-12 10:25:36,898 INFO L242 Difference]: Finished difference. Result has 149 places, 93 transitions, 435 flow [2022-07-12 10:25:36,898 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=435, PETRI_PLACES=149, PETRI_TRANSITIONS=93} [2022-07-12 10:25:36,899 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 58 predicate places. [2022-07-12 10:25:36,899 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 93 transitions, 435 flow [2022-07-12 10:25:36,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:36,900 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:36,900 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:36,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 10:25:36,900 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:36,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:36,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1149913502, now seen corresponding path program 4 times [2022-07-12 10:25:36,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:36,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891592634] [2022-07-12 10:25:36,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:36,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:36,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:36,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:36,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891592634] [2022-07-12 10:25:36,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891592634] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:36,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:36,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:36,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190472036] [2022-07-12 10:25:36,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:36,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:36,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:36,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:36,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:36,998 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:36,999 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 93 transitions, 435 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:36,999 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:36,999 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:36,999 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:37,329 INFO L129 PetriNetUnfolder]: 71/322 cut-off events. [2022-07-12 10:25:37,330 INFO L130 PetriNetUnfolder]: For 2027/2035 co-relation queries the response was YES. [2022-07-12 10:25:37,332 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1458 conditions, 322 events. 71/322 cut-off events. For 2027/2035 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1371 event pairs, 19 based on Foata normal form. 1/320 useless extension candidates. Maximal degree in co-relation 1414. Up to 71 conditions per place. [2022-07-12 10:25:37,333 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 48 selfloop transitions, 17 changer transitions 32/152 dead transitions. [2022-07-12 10:25:37,334 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 152 transitions, 1261 flow [2022-07-12 10:25:37,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 10:25:37,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-12 10:25:37,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1415 transitions. [2022-07-12 10:25:37,336 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6605975723622782 [2022-07-12 10:25:37,336 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1415 transitions. [2022-07-12 10:25:37,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1415 transitions. [2022-07-12 10:25:37,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:37,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1415 transitions. [2022-07-12 10:25:37,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 67.38095238095238) internal successors, (1415), 21 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:37,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:37,341 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:37,341 INFO L186 Difference]: Start difference. First operand has 149 places, 93 transitions, 435 flow. Second operand 21 states and 1415 transitions. [2022-07-12 10:25:37,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 152 transitions, 1261 flow [2022-07-12 10:25:37,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 152 transitions, 1035 flow, removed 113 selfloop flow, removed 11 redundant places. [2022-07-12 10:25:37,348 INFO L242 Difference]: Finished difference. Result has 161 places, 103 transitions, 566 flow [2022-07-12 10:25:37,348 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=566, PETRI_PLACES=161, PETRI_TRANSITIONS=103} [2022-07-12 10:25:37,349 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 70 predicate places. [2022-07-12 10:25:37,349 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 103 transitions, 566 flow [2022-07-12 10:25:37,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:37,350 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:37,350 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:37,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-12 10:25:37,350 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:37,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:37,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1840832138, now seen corresponding path program 5 times [2022-07-12 10:25:37,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:37,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285924024] [2022-07-12 10:25:37,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:37,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:37,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:37,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:37,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285924024] [2022-07-12 10:25:37,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285924024] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:37,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:37,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:37,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722763383] [2022-07-12 10:25:37,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:37,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:37,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:37,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:37,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:37,453 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:37,453 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 103 transitions, 566 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:37,453 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:37,454 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:37,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:37,741 INFO L129 PetriNetUnfolder]: 66/321 cut-off events. [2022-07-12 10:25:37,741 INFO L130 PetriNetUnfolder]: For 2439/2452 co-relation queries the response was YES. [2022-07-12 10:25:37,743 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1555 conditions, 321 events. 66/321 cut-off events. For 2439/2452 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1431 event pairs, 17 based on Foata normal form. 4/321 useless extension candidates. Maximal degree in co-relation 1504. Up to 84 conditions per place. [2022-07-12 10:25:37,747 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 50 selfloop transitions, 20 changer transitions 36/161 dead transitions. [2022-07-12 10:25:37,748 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 161 transitions, 1468 flow [2022-07-12 10:25:37,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:25:37,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:25:37,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1345 transitions. [2022-07-12 10:25:37,750 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6593137254901961 [2022-07-12 10:25:37,751 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1345 transitions. [2022-07-12 10:25:37,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1345 transitions. [2022-07-12 10:25:37,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:37,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1345 transitions. [2022-07-12 10:25:37,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 67.25) internal successors, (1345), 20 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:37,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:37,756 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:37,756 INFO L186 Difference]: Start difference. First operand has 161 places, 103 transitions, 566 flow. Second operand 20 states and 1345 transitions. [2022-07-12 10:25:37,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 161 transitions, 1468 flow [2022-07-12 10:25:37,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 161 transitions, 1302 flow, removed 78 selfloop flow, removed 13 redundant places. [2022-07-12 10:25:37,765 INFO L242 Difference]: Finished difference. Result has 169 places, 110 transitions, 716 flow [2022-07-12 10:25:37,766 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=716, PETRI_PLACES=169, PETRI_TRANSITIONS=110} [2022-07-12 10:25:37,767 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 78 predicate places. [2022-07-12 10:25:37,767 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 110 transitions, 716 flow [2022-07-12 10:25:37,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:37,767 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:37,767 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:37,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-12 10:25:37,768 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:37,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:37,768 INFO L85 PathProgramCache]: Analyzing trace with hash 894008134, now seen corresponding path program 6 times [2022-07-12 10:25:37,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:37,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911640852] [2022-07-12 10:25:37,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:37,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:37,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:37,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:37,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911640852] [2022-07-12 10:25:37,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911640852] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:37,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:37,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:37,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467117695] [2022-07-12 10:25:37,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:37,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:37,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:37,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:37,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:37,874 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:37,875 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 110 transitions, 716 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:37,875 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:37,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:37,875 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:38,134 INFO L129 PetriNetUnfolder]: 64/307 cut-off events. [2022-07-12 10:25:38,134 INFO L130 PetriNetUnfolder]: For 2312/2325 co-relation queries the response was YES. [2022-07-12 10:25:38,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1499 conditions, 307 events. 64/307 cut-off events. For 2312/2325 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1291 event pairs, 18 based on Foata normal form. 1/304 useless extension candidates. Maximal degree in co-relation 1445. Up to 69 conditions per place. [2022-07-12 10:25:38,139 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 55 selfloop transitions, 22 changer transitions 32/164 dead transitions. [2022-07-12 10:25:38,140 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 164 transitions, 1527 flow [2022-07-12 10:25:38,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:25:38,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:25:38,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1349 transitions. [2022-07-12 10:25:38,142 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6612745098039216 [2022-07-12 10:25:38,142 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1349 transitions. [2022-07-12 10:25:38,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1349 transitions. [2022-07-12 10:25:38,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:38,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1349 transitions. [2022-07-12 10:25:38,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 67.45) internal successors, (1349), 20 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:38,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:38,147 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:38,147 INFO L186 Difference]: Start difference. First operand has 169 places, 110 transitions, 716 flow. Second operand 20 states and 1349 transitions. [2022-07-12 10:25:38,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 164 transitions, 1527 flow [2022-07-12 10:25:38,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 164 transitions, 1345 flow, removed 78 selfloop flow, removed 13 redundant places. [2022-07-12 10:25:38,157 INFO L242 Difference]: Finished difference. Result has 180 places, 118 transitions, 828 flow [2022-07-12 10:25:38,157 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=828, PETRI_PLACES=180, PETRI_TRANSITIONS=118} [2022-07-12 10:25:38,158 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 89 predicate places. [2022-07-12 10:25:38,158 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 118 transitions, 828 flow [2022-07-12 10:25:38,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:38,159 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:38,159 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:38,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-12 10:25:38,159 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:38,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:38,160 INFO L85 PathProgramCache]: Analyzing trace with hash -122420418, now seen corresponding path program 7 times [2022-07-12 10:25:38,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:38,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20804840] [2022-07-12 10:25:38,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:38,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:38,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:38,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:38,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:38,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20804840] [2022-07-12 10:25:38,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20804840] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:38,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:38,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:38,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800508270] [2022-07-12 10:25:38,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:38,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:38,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:38,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:38,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:38,258 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:38,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 118 transitions, 828 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:38,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:38,259 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:38,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:38,469 INFO L129 PetriNetUnfolder]: 57/309 cut-off events. [2022-07-12 10:25:38,470 INFO L130 PetriNetUnfolder]: For 2525/2539 co-relation queries the response was YES. [2022-07-12 10:25:38,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1519 conditions, 309 events. 57/309 cut-off events. For 2525/2539 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1362 event pairs, 13 based on Foata normal form. 3/308 useless extension candidates. Maximal degree in co-relation 1460. Up to 78 conditions per place. [2022-07-12 10:25:38,473 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 53 selfloop transitions, 26 changer transitions 27/161 dead transitions. [2022-07-12 10:25:38,473 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 161 transitions, 1509 flow [2022-07-12 10:25:38,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:25:38,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:25:38,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1082 transitions. [2022-07-12 10:25:38,478 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6629901960784313 [2022-07-12 10:25:38,479 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1082 transitions. [2022-07-12 10:25:38,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1082 transitions. [2022-07-12 10:25:38,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:38,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1082 transitions. [2022-07-12 10:25:38,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 67.625) internal successors, (1082), 16 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:38,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:38,485 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:38,485 INFO L186 Difference]: Start difference. First operand has 180 places, 118 transitions, 828 flow. Second operand 16 states and 1082 transitions. [2022-07-12 10:25:38,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 161 transitions, 1509 flow [2022-07-12 10:25:38,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 161 transitions, 1373 flow, removed 58 selfloop flow, removed 13 redundant places. [2022-07-12 10:25:38,497 INFO L242 Difference]: Finished difference. Result has 179 places, 123 transitions, 886 flow [2022-07-12 10:25:38,498 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=886, PETRI_PLACES=179, PETRI_TRANSITIONS=123} [2022-07-12 10:25:38,498 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 88 predicate places. [2022-07-12 10:25:38,498 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 123 transitions, 886 flow [2022-07-12 10:25:38,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:38,499 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:38,499 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:38,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-12 10:25:38,499 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:38,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:38,500 INFO L85 PathProgramCache]: Analyzing trace with hash -427302442, now seen corresponding path program 8 times [2022-07-12 10:25:38,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:38,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987459164] [2022-07-12 10:25:38,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:38,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:38,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:38,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:38,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987459164] [2022-07-12 10:25:38,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987459164] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:38,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:38,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:38,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438326088] [2022-07-12 10:25:38,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:38,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:38,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:38,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:38,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:38,598 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:38,599 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 123 transitions, 886 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:38,599 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:38,599 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:38,599 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:38,819 INFO L129 PetriNetUnfolder]: 48/274 cut-off events. [2022-07-12 10:25:38,820 INFO L130 PetriNetUnfolder]: For 1694/1713 co-relation queries the response was YES. [2022-07-12 10:25:38,822 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 274 events. 48/274 cut-off events. For 1694/1713 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1096 event pairs, 9 based on Foata normal form. 7/279 useless extension candidates. Maximal degree in co-relation 1214. Up to 66 conditions per place. [2022-07-12 10:25:38,823 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 49 selfloop transitions, 14 changer transitions 35/153 dead transitions. [2022-07-12 10:25:38,823 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 153 transitions, 1341 flow [2022-07-12 10:25:38,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:38,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:38,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1207 transitions. [2022-07-12 10:25:38,825 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6574074074074074 [2022-07-12 10:25:38,825 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1207 transitions. [2022-07-12 10:25:38,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1207 transitions. [2022-07-12 10:25:38,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:38,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1207 transitions. [2022-07-12 10:25:38,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.05555555555556) internal successors, (1207), 18 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:38,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:38,829 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:38,829 INFO L186 Difference]: Start difference. First operand has 179 places, 123 transitions, 886 flow. Second operand 18 states and 1207 transitions. [2022-07-12 10:25:38,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 153 transitions, 1341 flow [2022-07-12 10:25:38,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 153 transitions, 1210 flow, removed 33 selfloop flow, removed 10 redundant places. [2022-07-12 10:25:38,840 INFO L242 Difference]: Finished difference. Result has 186 places, 108 transitions, 644 flow [2022-07-12 10:25:38,840 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=644, PETRI_PLACES=186, PETRI_TRANSITIONS=108} [2022-07-12 10:25:38,840 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 95 predicate places. [2022-07-12 10:25:38,841 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 108 transitions, 644 flow [2022-07-12 10:25:38,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:38,842 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:38,842 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] [2022-07-12 10:25:38,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-12 10:25:38,842 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:38,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:38,843 INFO L85 PathProgramCache]: Analyzing trace with hash -290657432, now seen corresponding path program 9 times [2022-07-12 10:25:38,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:38,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273883315] [2022-07-12 10:25:38,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:38,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:38,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:38,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:38,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273883315] [2022-07-12 10:25:38,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273883315] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:38,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:38,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:38,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004180143] [2022-07-12 10:25:38,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:38,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:38,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:38,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:38,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:38,940 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:38,941 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 108 transitions, 644 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:38,941 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:38,941 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:38,941 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:39,240 INFO L129 PetriNetUnfolder]: 50/275 cut-off events. [2022-07-12 10:25:39,240 INFO L130 PetriNetUnfolder]: For 1683/1696 co-relation queries the response was YES. [2022-07-12 10:25:39,242 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1290 conditions, 275 events. 50/275 cut-off events. For 1683/1696 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1070 event pairs, 13 based on Foata normal form. 3/275 useless extension candidates. Maximal degree in co-relation 1233. Up to 66 conditions per place. [2022-07-12 10:25:39,243 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 46 selfloop transitions, 22 changer transitions 25/148 dead transitions. [2022-07-12 10:25:39,243 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 148 transitions, 1273 flow [2022-07-12 10:25:39,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:39,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:39,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1213 transitions. [2022-07-12 10:25:39,245 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6606753812636166 [2022-07-12 10:25:39,245 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1213 transitions. [2022-07-12 10:25:39,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1213 transitions. [2022-07-12 10:25:39,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:39,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1213 transitions. [2022-07-12 10:25:39,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.38888888888889) internal successors, (1213), 18 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:39,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:39,249 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:39,249 INFO L186 Difference]: Start difference. First operand has 186 places, 108 transitions, 644 flow. Second operand 18 states and 1213 transitions. [2022-07-12 10:25:39,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 148 transitions, 1273 flow [2022-07-12 10:25:39,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 148 transitions, 1101 flow, removed 30 selfloop flow, removed 18 redundant places. [2022-07-12 10:25:39,259 INFO L242 Difference]: Finished difference. Result has 171 places, 117 transitions, 751 flow [2022-07-12 10:25:39,259 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=751, PETRI_PLACES=171, PETRI_TRANSITIONS=117} [2022-07-12 10:25:39,259 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 80 predicate places. [2022-07-12 10:25:39,260 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 117 transitions, 751 flow [2022-07-12 10:25:39,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:39,260 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:39,260 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:39,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-12 10:25:39,261 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:39,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:39,261 INFO L85 PathProgramCache]: Analyzing trace with hash 957146222, now seen corresponding path program 10 times [2022-07-12 10:25:39,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:39,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211836370] [2022-07-12 10:25:39,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:39,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:39,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:39,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:39,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:39,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211836370] [2022-07-12 10:25:39,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211836370] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:39,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:39,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:39,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565591347] [2022-07-12 10:25:39,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:39,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:39,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:39,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:39,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:39,361 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:39,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 117 transitions, 751 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:39,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:39,362 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:39,362 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:39,646 INFO L129 PetriNetUnfolder]: 47/278 cut-off events. [2022-07-12 10:25:39,646 INFO L130 PetriNetUnfolder]: For 1271/1277 co-relation queries the response was YES. [2022-07-12 10:25:39,648 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1201 conditions, 278 events. 47/278 cut-off events. For 1271/1277 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1117 event pairs, 16 based on Foata normal form. 1/275 useless extension candidates. Maximal degree in co-relation 1148. Up to 66 conditions per place. [2022-07-12 10:25:39,649 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 47 selfloop transitions, 24 changer transitions 26/152 dead transitions. [2022-07-12 10:25:39,649 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 152 transitions, 1300 flow [2022-07-12 10:25:39,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:25:39,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:25:39,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1149 transitions. [2022-07-12 10:25:39,651 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6626297577854672 [2022-07-12 10:25:39,651 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1149 transitions. [2022-07-12 10:25:39,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1149 transitions. [2022-07-12 10:25:39,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:39,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1149 transitions. [2022-07-12 10:25:39,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.58823529411765) internal successors, (1149), 17 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:39,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:39,655 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:39,656 INFO L186 Difference]: Start difference. First operand has 171 places, 117 transitions, 751 flow. Second operand 17 states and 1149 transitions. [2022-07-12 10:25:39,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 152 transitions, 1300 flow [2022-07-12 10:25:39,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 152 transitions, 1215 flow, removed 37 selfloop flow, removed 5 redundant places. [2022-07-12 10:25:39,665 INFO L242 Difference]: Finished difference. Result has 183 places, 121 transitions, 835 flow [2022-07-12 10:25:39,665 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=835, PETRI_PLACES=183, PETRI_TRANSITIONS=121} [2022-07-12 10:25:39,666 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 92 predicate places. [2022-07-12 10:25:39,666 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 121 transitions, 835 flow [2022-07-12 10:25:39,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:39,666 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:39,666 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:39,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-12 10:25:39,667 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:39,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:39,667 INFO L85 PathProgramCache]: Analyzing trace with hash -269503326, now seen corresponding path program 11 times [2022-07-12 10:25:39,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:39,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509368] [2022-07-12 10:25:39,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:39,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:39,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:39,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:39,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509368] [2022-07-12 10:25:39,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:39,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:39,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:39,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497221536] [2022-07-12 10:25:39,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:39,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:39,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:39,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:39,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:39,782 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:39,783 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 121 transitions, 835 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:39,783 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:39,783 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:39,783 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:40,016 INFO L129 PetriNetUnfolder]: 44/270 cut-off events. [2022-07-12 10:25:40,016 INFO L130 PetriNetUnfolder]: For 1325/1337 co-relation queries the response was YES. [2022-07-12 10:25:40,019 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1179 conditions, 270 events. 44/270 cut-off events. For 1325/1337 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1067 event pairs, 12 based on Foata normal form. 3/270 useless extension candidates. Maximal degree in co-relation 1120. Up to 66 conditions per place. [2022-07-12 10:25:40,020 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 47 selfloop transitions, 14 changer transitions 34/150 dead transitions. [2022-07-12 10:25:40,020 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 150 transitions, 1283 flow [2022-07-12 10:25:40,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:25:40,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:25:40,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1148 transitions. [2022-07-12 10:25:40,022 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6620530565167243 [2022-07-12 10:25:40,022 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1148 transitions. [2022-07-12 10:25:40,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1148 transitions. [2022-07-12 10:25:40,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:40,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1148 transitions. [2022-07-12 10:25:40,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.52941176470588) internal successors, (1148), 17 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:40,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:40,026 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:40,026 INFO L186 Difference]: Start difference. First operand has 183 places, 121 transitions, 835 flow. Second operand 17 states and 1148 transitions. [2022-07-12 10:25:40,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 150 transitions, 1283 flow [2022-07-12 10:25:40,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 150 transitions, 1184 flow, removed 28 selfloop flow, removed 8 redundant places. [2022-07-12 10:25:40,036 INFO L242 Difference]: Finished difference. Result has 190 places, 112 transitions, 684 flow [2022-07-12 10:25:40,037 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=684, PETRI_PLACES=190, PETRI_TRANSITIONS=112} [2022-07-12 10:25:40,037 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 99 predicate places. [2022-07-12 10:25:40,037 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 112 transitions, 684 flow [2022-07-12 10:25:40,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:40,038 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:40,038 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:40,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-12 10:25:40,038 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:40,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:40,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1429820720, now seen corresponding path program 12 times [2022-07-12 10:25:40,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:40,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485327359] [2022-07-12 10:25:40,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:40,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:40,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:40,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:40,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485327359] [2022-07-12 10:25:40,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485327359] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:40,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:40,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:40,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098692102] [2022-07-12 10:25:40,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:40,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:40,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:40,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:40,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:40,152 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:40,152 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 112 transitions, 684 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:40,152 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:40,152 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:40,153 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:40,414 INFO L129 PetriNetUnfolder]: 34/228 cut-off events. [2022-07-12 10:25:40,416 INFO L130 PetriNetUnfolder]: For 1175/1187 co-relation queries the response was YES. [2022-07-12 10:25:40,418 INFO L84 FinitePrefix]: Finished finitePrefix Result has 949 conditions, 228 events. 34/228 cut-off events. For 1175/1187 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 782 event pairs, 9 based on Foata normal form. 3/229 useless extension candidates. Maximal degree in co-relation 889. Up to 53 conditions per place. [2022-07-12 10:25:40,419 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 37 selfloop transitions, 3 changer transitions 37/132 dead transitions. [2022-07-12 10:25:40,419 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 132 transitions, 979 flow [2022-07-12 10:25:40,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:40,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:40,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1203 transitions. [2022-07-12 10:25:40,421 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6552287581699346 [2022-07-12 10:25:40,421 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1203 transitions. [2022-07-12 10:25:40,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1203 transitions. [2022-07-12 10:25:40,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:40,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1203 transitions. [2022-07-12 10:25:40,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 66.83333333333333) internal successors, (1203), 18 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:40,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:40,425 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:40,425 INFO L186 Difference]: Start difference. First operand has 190 places, 112 transitions, 684 flow. Second operand 18 states and 1203 transitions. [2022-07-12 10:25:40,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 132 transitions, 979 flow [2022-07-12 10:25:40,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 132 transitions, 859 flow, removed 26 selfloop flow, removed 22 redundant places. [2022-07-12 10:25:40,433 INFO L242 Difference]: Finished difference. Result has 174 places, 92 transitions, 398 flow [2022-07-12 10:25:40,433 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=398, PETRI_PLACES=174, PETRI_TRANSITIONS=92} [2022-07-12 10:25:40,434 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 83 predicate places. [2022-07-12 10:25:40,435 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 92 transitions, 398 flow [2022-07-12 10:25:40,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:40,435 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:40,435 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:40,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-12 10:25:40,435 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:40,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:40,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1540704440, now seen corresponding path program 13 times [2022-07-12 10:25:40,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:40,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413219778] [2022-07-12 10:25:40,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:40,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:40,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:40,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:40,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413219778] [2022-07-12 10:25:40,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413219778] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:40,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:40,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:40,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268807321] [2022-07-12 10:25:40,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:40,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:40,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:40,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:40,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:40,547 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:40,548 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 92 transitions, 398 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:40,548 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:40,548 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:40,548 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:40,835 INFO L129 PetriNetUnfolder]: 39/251 cut-off events. [2022-07-12 10:25:40,836 INFO L130 PetriNetUnfolder]: For 1096/1097 co-relation queries the response was YES. [2022-07-12 10:25:40,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 966 conditions, 251 events. 39/251 cut-off events. For 1096/1097 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 889 event pairs, 5 based on Foata normal form. 1/252 useless extension candidates. Maximal degree in co-relation 915. Up to 33 conditions per place. [2022-07-12 10:25:40,838 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 43 selfloop transitions, 19 changer transitions 32/149 dead transitions. [2022-07-12 10:25:40,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 149 transitions, 1122 flow [2022-07-12 10:25:40,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:25:40,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:25:40,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1473 transitions. [2022-07-12 10:25:40,840 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6564171122994652 [2022-07-12 10:25:40,840 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1473 transitions. [2022-07-12 10:25:40,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1473 transitions. [2022-07-12 10:25:40,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:40,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1473 transitions. [2022-07-12 10:25:40,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 66.95454545454545) internal successors, (1473), 22 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:40,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:40,846 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:40,846 INFO L186 Difference]: Start difference. First operand has 174 places, 92 transitions, 398 flow. Second operand 22 states and 1473 transitions. [2022-07-12 10:25:40,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 149 transitions, 1122 flow [2022-07-12 10:25:40,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 149 transitions, 905 flow, removed 40 selfloop flow, removed 24 redundant places. [2022-07-12 10:25:40,852 INFO L242 Difference]: Finished difference. Result has 157 places, 103 transitions, 514 flow [2022-07-12 10:25:40,852 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=514, PETRI_PLACES=157, PETRI_TRANSITIONS=103} [2022-07-12 10:25:40,852 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 66 predicate places. [2022-07-12 10:25:40,852 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 103 transitions, 514 flow [2022-07-12 10:25:40,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:40,853 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:40,853 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:40,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-12 10:25:40,853 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:40,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:40,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1542843278, now seen corresponding path program 14 times [2022-07-12 10:25:40,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:40,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495818122] [2022-07-12 10:25:40,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:40,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:40,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:40,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:40,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495818122] [2022-07-12 10:25:40,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495818122] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:40,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:40,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:40,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285229287] [2022-07-12 10:25:40,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:40,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:40,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:40,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:40,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:40,956 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:40,957 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 103 transitions, 514 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:40,957 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:40,957 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:40,957 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:41,248 INFO L129 PetriNetUnfolder]: 36/233 cut-off events. [2022-07-12 10:25:41,248 INFO L130 PetriNetUnfolder]: For 740/741 co-relation queries the response was YES. [2022-07-12 10:25:41,250 INFO L84 FinitePrefix]: Finished finitePrefix Result has 914 conditions, 233 events. 36/233 cut-off events. For 740/741 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 779 event pairs, 6 based on Foata normal form. 1/232 useless extension candidates. Maximal degree in co-relation 868. Up to 31 conditions per place. [2022-07-12 10:25:41,251 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 39 selfloop transitions, 21 changer transitions 32/147 dead transitions. [2022-07-12 10:25:41,251 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 147 transitions, 1106 flow [2022-07-12 10:25:41,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 10:25:41,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-12 10:25:41,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1406 transitions. [2022-07-12 10:25:41,253 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6563958916900093 [2022-07-12 10:25:41,253 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1406 transitions. [2022-07-12 10:25:41,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1406 transitions. [2022-07-12 10:25:41,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:41,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1406 transitions. [2022-07-12 10:25:41,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 66.95238095238095) internal successors, (1406), 21 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:41,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:41,257 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:41,258 INFO L186 Difference]: Start difference. First operand has 157 places, 103 transitions, 514 flow. Second operand 21 states and 1406 transitions. [2022-07-12 10:25:41,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 147 transitions, 1106 flow [2022-07-12 10:25:41,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 147 transitions, 964 flow, removed 65 selfloop flow, removed 11 redundant places. [2022-07-12 10:25:41,263 INFO L242 Difference]: Finished difference. Result has 166 places, 105 transitions, 579 flow [2022-07-12 10:25:41,264 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=579, PETRI_PLACES=166, PETRI_TRANSITIONS=105} [2022-07-12 10:25:41,264 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 75 predicate places. [2022-07-12 10:25:41,264 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 105 transitions, 579 flow [2022-07-12 10:25:41,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:41,265 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:41,265 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:41,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-12 10:25:41,265 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:41,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:41,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1087685708, now seen corresponding path program 15 times [2022-07-12 10:25:41,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:41,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063531044] [2022-07-12 10:25:41,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:41,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:41,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:41,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:41,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063531044] [2022-07-12 10:25:41,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063531044] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:41,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:41,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:41,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507646759] [2022-07-12 10:25:41,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:41,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:41,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:41,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:41,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:41,362 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:41,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 105 transitions, 579 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:41,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:41,363 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:41,363 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:41,592 INFO L129 PetriNetUnfolder]: 33/230 cut-off events. [2022-07-12 10:25:41,593 INFO L130 PetriNetUnfolder]: For 970/971 co-relation queries the response was YES. [2022-07-12 10:25:41,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 949 conditions, 230 events. 33/230 cut-off events. For 970/971 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 770 event pairs, 3 based on Foata normal form. 1/230 useless extension candidates. Maximal degree in co-relation 899. Up to 36 conditions per place. [2022-07-12 10:25:41,595 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 39 selfloop transitions, 22 changer transitions 29/145 dead transitions. [2022-07-12 10:25:41,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 145 transitions, 1119 flow [2022-07-12 10:25:41,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:25:41,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:25:41,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1083 transitions. [2022-07-12 10:25:41,597 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6636029411764706 [2022-07-12 10:25:41,597 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1083 transitions. [2022-07-12 10:25:41,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1083 transitions. [2022-07-12 10:25:41,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:41,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1083 transitions. [2022-07-12 10:25:41,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 67.6875) internal successors, (1083), 16 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:41,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:41,602 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:41,602 INFO L186 Difference]: Start difference. First operand has 166 places, 105 transitions, 579 flow. Second operand 16 states and 1083 transitions. [2022-07-12 10:25:41,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 145 transitions, 1119 flow [2022-07-12 10:25:41,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 145 transitions, 976 flow, removed 46 selfloop flow, removed 17 redundant places. [2022-07-12 10:25:41,609 INFO L242 Difference]: Finished difference. Result has 160 places, 110 transitions, 626 flow [2022-07-12 10:25:41,609 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=626, PETRI_PLACES=160, PETRI_TRANSITIONS=110} [2022-07-12 10:25:41,612 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 69 predicate places. [2022-07-12 10:25:41,612 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 110 transitions, 626 flow [2022-07-12 10:25:41,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:41,613 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:41,613 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:41,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-12 10:25:41,613 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:41,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:41,614 INFO L85 PathProgramCache]: Analyzing trace with hash -470595522, now seen corresponding path program 16 times [2022-07-12 10:25:41,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:41,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435034812] [2022-07-12 10:25:41,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:41,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:41,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:41,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:41,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435034812] [2022-07-12 10:25:41,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435034812] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:41,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:41,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:41,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115686495] [2022-07-12 10:25:41,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:41,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:41,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:41,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:41,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:41,716 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:41,717 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 110 transitions, 626 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:41,717 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:41,717 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:41,717 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:41,937 INFO L129 PetriNetUnfolder]: 24/200 cut-off events. [2022-07-12 10:25:41,937 INFO L130 PetriNetUnfolder]: For 629/630 co-relation queries the response was YES. [2022-07-12 10:25:41,939 INFO L84 FinitePrefix]: Finished finitePrefix Result has 769 conditions, 200 events. 24/200 cut-off events. For 629/630 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 571 event pairs, 3 based on Foata normal form. 1/200 useless extension candidates. Maximal degree in co-relation 724. Up to 30 conditions per place. [2022-07-12 10:25:41,939 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 35 selfloop transitions, 10 changer transitions 34/134 dead transitions. [2022-07-12 10:25:41,940 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 134 transitions, 943 flow [2022-07-12 10:25:41,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:41,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:41,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1205 transitions. [2022-07-12 10:25:41,942 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.656318082788671 [2022-07-12 10:25:41,942 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1205 transitions. [2022-07-12 10:25:41,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1205 transitions. [2022-07-12 10:25:41,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:41,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1205 transitions. [2022-07-12 10:25:41,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 66.94444444444444) internal successors, (1205), 18 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:41,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:41,946 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:41,947 INFO L186 Difference]: Start difference. First operand has 160 places, 110 transitions, 626 flow. Second operand 18 states and 1205 transitions. [2022-07-12 10:25:41,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 134 transitions, 943 flow [2022-07-12 10:25:41,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 134 transitions, 839 flow, removed 30 selfloop flow, removed 10 redundant places. [2022-07-12 10:25:41,953 INFO L242 Difference]: Finished difference. Result has 167 places, 95 transitions, 426 flow [2022-07-12 10:25:41,953 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=426, PETRI_PLACES=167, PETRI_TRANSITIONS=95} [2022-07-12 10:25:41,955 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 76 predicate places. [2022-07-12 10:25:41,955 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 95 transitions, 426 flow [2022-07-12 10:25:41,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:41,956 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:41,956 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:41,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-12 10:25:41,956 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:41,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:41,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1047995534, now seen corresponding path program 17 times [2022-07-12 10:25:41,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:41,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243606784] [2022-07-12 10:25:41,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:41,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:42,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:42,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:42,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243606784] [2022-07-12 10:25:42,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243606784] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:42,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:42,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:42,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984457587] [2022-07-12 10:25:42,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:42,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:42,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:42,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:42,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:42,059 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:42,060 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 95 transitions, 426 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:42,060 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:42,060 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:42,060 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:42,275 INFO L129 PetriNetUnfolder]: 29/213 cut-off events. [2022-07-12 10:25:42,275 INFO L130 PetriNetUnfolder]: For 695/696 co-relation queries the response was YES. [2022-07-12 10:25:42,277 INFO L84 FinitePrefix]: Finished finitePrefix Result has 801 conditions, 213 events. 29/213 cut-off events. For 695/696 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 646 event pairs, 4 based on Foata normal form. 1/212 useless extension candidates. Maximal degree in co-relation 756. Up to 30 conditions per place. [2022-07-12 10:25:42,277 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 33 selfloop transitions, 20 changer transitions 27/135 dead transitions. [2022-07-12 10:25:42,277 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 135 transitions, 946 flow [2022-07-12 10:25:42,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:42,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:42,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1210 transitions. [2022-07-12 10:25:42,279 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.659041394335512 [2022-07-12 10:25:42,279 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1210 transitions. [2022-07-12 10:25:42,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1210 transitions. [2022-07-12 10:25:42,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:42,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1210 transitions. [2022-07-12 10:25:42,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.22222222222223) internal successors, (1210), 18 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:42,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:42,283 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:42,283 INFO L186 Difference]: Start difference. First operand has 167 places, 95 transitions, 426 flow. Second operand 18 states and 1210 transitions. [2022-07-12 10:25:42,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 135 transitions, 946 flow [2022-07-12 10:25:42,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 135 transitions, 800 flow, removed 25 selfloop flow, removed 18 redundant places. [2022-07-12 10:25:42,289 INFO L242 Difference]: Finished difference. Result has 152 places, 104 transitions, 539 flow [2022-07-12 10:25:42,289 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=539, PETRI_PLACES=152, PETRI_TRANSITIONS=104} [2022-07-12 10:25:42,289 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 61 predicate places. [2022-07-12 10:25:42,289 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 104 transitions, 539 flow [2022-07-12 10:25:42,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:42,290 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:42,290 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:42,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-12 10:25:42,290 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:42,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:42,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1226403370, now seen corresponding path program 18 times [2022-07-12 10:25:42,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:42,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781904416] [2022-07-12 10:25:42,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:42,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:42,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:42,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:42,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781904416] [2022-07-12 10:25:42,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781904416] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:42,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:42,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:42,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952538485] [2022-07-12 10:25:42,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:42,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:42,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:42,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:42,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:42,383 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:42,384 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 104 transitions, 539 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:42,384 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:42,384 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:42,384 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:42,597 INFO L129 PetriNetUnfolder]: 25/211 cut-off events. [2022-07-12 10:25:42,597 INFO L130 PetriNetUnfolder]: For 493/494 co-relation queries the response was YES. [2022-07-12 10:25:42,598 INFO L84 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 211 events. 25/211 cut-off events. For 493/494 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 632 event pairs, 0 based on Foata normal form. 1/212 useless extension candidates. Maximal degree in co-relation 709. Up to 30 conditions per place. [2022-07-12 10:25:42,599 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 34 selfloop transitions, 22 changer transitions 28/139 dead transitions. [2022-07-12 10:25:42,599 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 139 transitions, 993 flow [2022-07-12 10:25:42,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:25:42,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:25:42,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1146 transitions. [2022-07-12 10:25:42,600 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6608996539792388 [2022-07-12 10:25:42,600 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1146 transitions. [2022-07-12 10:25:42,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1146 transitions. [2022-07-12 10:25:42,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:42,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1146 transitions. [2022-07-12 10:25:42,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.41176470588235) internal successors, (1146), 17 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:42,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:42,604 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:42,604 INFO L186 Difference]: Start difference. First operand has 152 places, 104 transitions, 539 flow. Second operand 17 states and 1146 transitions. [2022-07-12 10:25:42,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 139 transitions, 993 flow [2022-07-12 10:25:42,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 139 transitions, 912 flow, removed 36 selfloop flow, removed 5 redundant places. [2022-07-12 10:25:42,613 INFO L242 Difference]: Finished difference. Result has 164 places, 108 transitions, 621 flow [2022-07-12 10:25:42,614 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=621, PETRI_PLACES=164, PETRI_TRANSITIONS=108} [2022-07-12 10:25:42,616 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 73 predicate places. [2022-07-12 10:25:42,616 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 108 transitions, 621 flow [2022-07-12 10:25:42,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:42,617 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:42,617 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:42,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-12 10:25:42,617 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:42,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:42,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1919700962, now seen corresponding path program 19 times [2022-07-12 10:25:42,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:42,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952735446] [2022-07-12 10:25:42,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:42,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:42,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:42,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:42,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952735446] [2022-07-12 10:25:42,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952735446] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:42,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:42,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:42,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653343333] [2022-07-12 10:25:42,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:42,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:42,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:42,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:42,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:42,709 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:42,710 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 108 transitions, 621 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:42,710 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:42,710 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:42,710 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:42,915 INFO L129 PetriNetUnfolder]: 19/194 cut-off events. [2022-07-12 10:25:42,915 INFO L130 PetriNetUnfolder]: For 449/450 co-relation queries the response was YES. [2022-07-12 10:25:42,916 INFO L84 FinitePrefix]: Finished finitePrefix Result has 706 conditions, 194 events. 19/194 cut-off events. For 449/450 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 526 event pairs, 0 based on Foata normal form. 1/195 useless extension candidates. Maximal degree in co-relation 659. Up to 30 conditions per place. [2022-07-12 10:25:42,917 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 33 selfloop transitions, 12 changer transitions 33/133 dead transitions. [2022-07-12 10:25:42,917 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 133 transitions, 962 flow [2022-07-12 10:25:42,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:25:42,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:25:42,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1141 transitions. [2022-07-12 10:25:42,923 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6580161476355249 [2022-07-12 10:25:42,923 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1141 transitions. [2022-07-12 10:25:42,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1141 transitions. [2022-07-12 10:25:42,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:42,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1141 transitions. [2022-07-12 10:25:42,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.11764705882354) internal successors, (1141), 17 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:42,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:42,926 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:42,927 INFO L186 Difference]: Start difference. First operand has 164 places, 108 transitions, 621 flow. Second operand 17 states and 1141 transitions. [2022-07-12 10:25:42,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 133 transitions, 962 flow [2022-07-12 10:25:42,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 133 transitions, 861 flow, removed 30 selfloop flow, removed 9 redundant places. [2022-07-12 10:25:42,933 INFO L242 Difference]: Finished difference. Result has 170 places, 99 transitions, 476 flow [2022-07-12 10:25:42,933 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=476, PETRI_PLACES=170, PETRI_TRANSITIONS=99} [2022-07-12 10:25:42,933 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 79 predicate places. [2022-07-12 10:25:42,933 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 99 transitions, 476 flow [2022-07-12 10:25:42,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:42,934 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:42,934 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:42,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-12 10:25:42,934 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:42,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:42,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1018887062, now seen corresponding path program 20 times [2022-07-12 10:25:42,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:42,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766790984] [2022-07-12 10:25:42,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:42,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:43,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:43,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:43,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766790984] [2022-07-12 10:25:43,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766790984] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:43,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:43,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:43,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432141523] [2022-07-12 10:25:43,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:43,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:43,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:43,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:43,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:43,029 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-07-12 10:25:43,030 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 99 transitions, 476 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:43,030 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:43,030 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-07-12 10:25:43,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:43,201 INFO L129 PetriNetUnfolder]: 11/124 cut-off events. [2022-07-12 10:25:43,201 INFO L130 PetriNetUnfolder]: For 244/245 co-relation queries the response was YES. [2022-07-12 10:25:43,202 INFO L84 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 124 events. 11/124 cut-off events. For 244/245 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 204 event pairs, 0 based on Foata normal form. 1/125 useless extension candidates. Maximal degree in co-relation 387. Up to 12 conditions per place. [2022-07-12 10:25:43,202 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 0 selfloop transitions, 0 changer transitions 94/94 dead transitions. [2022-07-12 10:25:43,202 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 94 transitions, 588 flow [2022-07-12 10:25:43,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:43,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:43,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1178 transitions. [2022-07-12 10:25:43,204 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6416122004357299 [2022-07-12 10:25:43,204 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1178 transitions. [2022-07-12 10:25:43,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1178 transitions. [2022-07-12 10:25:43,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:43,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1178 transitions. [2022-07-12 10:25:43,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 65.44444444444444) internal successors, (1178), 18 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:43,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:43,207 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:43,208 INFO L186 Difference]: Start difference. First operand has 170 places, 99 transitions, 476 flow. Second operand 18 states and 1178 transitions. [2022-07-12 10:25:43,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 94 transitions, 588 flow [2022-07-12 10:25:43,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 94 transitions, 478 flow, removed 24 selfloop flow, removed 23 redundant places. [2022-07-12 10:25:43,211 INFO L242 Difference]: Finished difference. Result has 139 places, 0 transitions, 0 flow [2022-07-12 10:25:43,211 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=0, PETRI_PLACES=139, PETRI_TRANSITIONS=0} [2022-07-12 10:25:43,211 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 48 predicate places. [2022-07-12 10:25:43,211 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 0 transitions, 0 flow [2022-07-12 10:25:43,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:43,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-07-12 10:25:43,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-07-12 10:25:43,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-07-12 10:25:43,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-12 10:25:43,217 INFO L356 BasicCegarLoop]: Path program histogram: [20, 20, 2, 2, 2, 1] [2022-07-12 10:25:43,220 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-12 10:25:43,220 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 10:25:43,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 10:25:43 BasicIcfg [2022-07-12 10:25:43,225 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 10:25:43,225 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 10:25:43,225 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 10:25:43,226 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 10:25:43,226 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:25:24" (3/4) ... [2022-07-12 10:25:43,228 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 10:25:43,233 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-07-12 10:25:43,233 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-07-12 10:25:43,238 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-07-12 10:25:43,239 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-12 10:25:43,239 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-12 10:25:43,239 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-12 10:25:43,271 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 10:25:43,272 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 10:25:43,272 INFO L158 Benchmark]: Toolchain (without parser) took 19627.03ms. Allocated memory was 100.7MB in the beginning and 218.1MB in the end (delta: 117.4MB). Free memory was 77.0MB in the beginning and 118.5MB in the end (delta: -41.5MB). Peak memory consumption was 78.2MB. Max. memory is 16.1GB. [2022-07-12 10:25:43,273 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 83.9MB. Free memory was 58.2MB in the beginning and 58.2MB in the end (delta: 41.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 10:25:43,273 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.89ms. Allocated memory is still 100.7MB. Free memory was 76.8MB in the beginning and 66.7MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 10:25:43,273 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.48ms. Allocated memory is still 100.7MB. Free memory was 66.5MB in the beginning and 64.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:25:43,273 INFO L158 Benchmark]: Boogie Preprocessor took 32.54ms. Allocated memory is still 100.7MB. Free memory was 64.9MB in the beginning and 63.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 10:25:43,274 INFO L158 Benchmark]: RCFGBuilder took 346.56ms. Allocated memory is still 100.7MB. Free memory was 63.8MB in the beginning and 52.1MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-12 10:25:43,274 INFO L158 Benchmark]: TraceAbstraction took 18956.93ms. Allocated memory was 100.7MB in the beginning and 218.1MB in the end (delta: 117.4MB). Free memory was 51.5MB in the beginning and 120.6MB in the end (delta: -69.2MB). Peak memory consumption was 51.0MB. Max. memory is 16.1GB. [2022-07-12 10:25:43,274 INFO L158 Benchmark]: Witness Printer took 46.27ms. Allocated memory is still 218.1MB. Free memory was 120.6MB in the beginning and 118.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:25:43,276 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 83.9MB. Free memory was 58.2MB in the beginning and 58.2MB in the end (delta: 41.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 192.89ms. Allocated memory is still 100.7MB. Free memory was 76.8MB in the beginning and 66.7MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.48ms. Allocated memory is still 100.7MB. Free memory was 66.5MB in the beginning and 64.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.54ms. Allocated memory is still 100.7MB. Free memory was 64.9MB in the beginning and 63.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 346.56ms. Allocated memory is still 100.7MB. Free memory was 63.8MB in the beginning and 52.1MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 18956.93ms. Allocated memory was 100.7MB in the beginning and 218.1MB in the end (delta: 117.4MB). Free memory was 51.5MB in the beginning and 120.6MB in the end (delta: -69.2MB). Peak memory consumption was 51.0MB. Max. memory is 16.1GB. * Witness Printer took 46.27ms. Allocated memory is still 218.1MB. Free memory was 120.6MB in the beginning and 118.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 69]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 122 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.8s, OverallIterations: 47, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 13.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1876 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1876 mSDsluCounter, 8928 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8809 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7458 IncrementalHoareTripleChecker+Invalid, 7489 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 1724 mSDtfsCounter, 7458 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1007 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 863 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3533 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1097occurred in iteration=12, InterpolantAutomatonStates: 803, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 3611 NumberOfCodeBlocks, 3611 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 3564 ConstructedInterpolants, 0 QuantifiedInterpolants, 14871 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 47 InterpolantComputations, 47 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-12 10:25:43,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE