./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-divine/ring_1w1r-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-divine/ring_1w1r-2.i -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 b7e9feb6929ab81158cc9d6731414a71af210f92cb571da2954e02689fee6d2b --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:30:03,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:30:03,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:30:03,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:30:03,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:30:03,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:30:03,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:30:03,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:30:03,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:30:03,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:30:03,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:30:03,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:30:03,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:30:03,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:30:03,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:30:03,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:30:03,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:30:03,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:30:03,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:30:03,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:30:03,395 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:30:03,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:30:03,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:30:03,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:30:03,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:30:03,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:30:03,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:30:03,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:30:03,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:30:03,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:30:03,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:30:03,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:30:03,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:30:03,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:30:03,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:30:03,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:30:03,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:30:03,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:30:03,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:30:03,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:30:03,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:30:03,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:30:03,420 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:30:03,455 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:30:03,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:30:03,456 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:30:03,456 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:30:03,457 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:30:03,457 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:30:03,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:30:03,458 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:30:03,458 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:30:03,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:30:03,459 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:30:03,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:30:03,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:30:03,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:30:03,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:30:03,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:30:03,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:30:03,460 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:30:03,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:30:03,462 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:30:03,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:30:03,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:30:03,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:30:03,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:30:03,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:30:03,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:30:03,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:30:03,464 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:30:03,464 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:30:03,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:30:03,464 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:30:03,464 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:30:03,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:30:03,465 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7e9feb6929ab81158cc9d6731414a71af210f92cb571da2954e02689fee6d2b [2022-07-22 21:30:03,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:30:03,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:30:03,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:30:03,768 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:30:03,769 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:30:03,770 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/ring_1w1r-2.i [2022-07-22 21:30:03,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16cf5f8f0/db281d95ba0d44629f917fedd4a783a4/FLAGed6fbc6cf [2022-07-22 21:30:04,423 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:30:04,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i [2022-07-22 21:30:04,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16cf5f8f0/db281d95ba0d44629f917fedd4a783a4/FLAGed6fbc6cf [2022-07-22 21:30:04,872 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16cf5f8f0/db281d95ba0d44629f917fedd4a783a4 [2022-07-22 21:30:04,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:30:04,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:30:04,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:30:04,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:30:04,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:30:04,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:30:04" (1/1) ... [2022-07-22 21:30:04,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fd3a207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:30:04, skipping insertion in model container [2022-07-22 21:30:04,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:30:04" (1/1) ... [2022-07-22 21:30:04,889 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:30:04,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:30:05,062 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-22 21:30:05,231 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/pthread-divine/ring_1w1r-2.i[39095,39108] [2022-07-22 21:30:05,235 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/pthread-divine/ring_1w1r-2.i[39180,39193] [2022-07-22 21:30:05,237 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/pthread-divine/ring_1w1r-2.i[39232,39245] [2022-07-22 21:30:05,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:30:05,253 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:30:05,274 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-22 21:30:05,309 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/pthread-divine/ring_1w1r-2.i[39095,39108] [2022-07-22 21:30:05,310 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/pthread-divine/ring_1w1r-2.i[39180,39193] [2022-07-22 21:30:05,311 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/pthread-divine/ring_1w1r-2.i[39232,39245] [2022-07-22 21:30:05,321 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:30:05,363 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:30:05,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:30:05 WrapperNode [2022-07-22 21:30:05,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:30:05,365 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:30:05,365 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:30:05,365 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:30:05,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:30:05" (1/1) ... [2022-07-22 21:30:05,392 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:30:05" (1/1) ... [2022-07-22 21:30:05,416 INFO L137 Inliner]: procedures = 224, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 125 [2022-07-22 21:30:05,417 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:30:05,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:30:05,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:30:05,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:30:05,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:30:05" (1/1) ... [2022-07-22 21:30:05,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:30:05" (1/1) ... [2022-07-22 21:30:05,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:30:05" (1/1) ... [2022-07-22 21:30:05,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:30:05" (1/1) ... [2022-07-22 21:30:05,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:30:05" (1/1) ... [2022-07-22 21:30:05,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:30:05" (1/1) ... [2022-07-22 21:30:05,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:30:05" (1/1) ... [2022-07-22 21:30:05,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:30:05,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:30:05,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:30:05,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:30:05,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:30:05" (1/1) ... [2022-07-22 21:30:05,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:30:05,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:30:05,483 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 21:30:05,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 21:30:05,527 INFO L130 BoogieDeclarations]: Found specification of procedure reader_fn [2022-07-22 21:30:05,527 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_fn [2022-07-22 21:30:05,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:30:05,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:30:05,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:30:05,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:30:05,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:30:05,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:30:05,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:30:05,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:30:05,530 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:30:05,679 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:30:05,696 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:30:06,013 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:30:06,021 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:30:06,021 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-22 21:30:06,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:30:06 BoogieIcfgContainer [2022-07-22 21:30:06,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:30:06,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:30:06,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:30:06,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:30:06,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:30:04" (1/3) ... [2022-07-22 21:30:06,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1260987d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:30:06, skipping insertion in model container [2022-07-22 21:30:06,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:30:05" (2/3) ... [2022-07-22 21:30:06,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1260987d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:30:06, skipping insertion in model container [2022-07-22 21:30:06,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:30:06" (3/3) ... [2022-07-22 21:30:06,044 INFO L111 eAbstractionObserver]: Analyzing ICFG ring_1w1r-2.i [2022-07-22 21:30:06,049 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:30:06,057 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:30:06,058 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-07-22 21:30:06,058 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:30:06,141 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-22 21:30:06,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 152 places, 158 transitions, 324 flow [2022-07-22 21:30:06,241 INFO L129 PetriNetUnfolder]: 10/157 cut-off events. [2022-07-22 21:30:06,243 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-22 21:30:06,249 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 157 events. 10/157 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 270 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 116. Up to 2 conditions per place. [2022-07-22 21:30:06,250 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 158 transitions, 324 flow [2022-07-22 21:30:06,259 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 148 transitions, 299 flow [2022-07-22 21:30:06,277 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:30:06,285 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@19ea0e06, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2e818cb9 [2022-07-22 21:30:06,285 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-22 21:30:06,311 INFO L129 PetriNetUnfolder]: 2/52 cut-off events. [2022-07-22 21:30:06,312 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:30:06,312 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:06,313 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:30:06,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:30:06,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:06,319 INFO L85 PathProgramCache]: Analyzing trace with hash 847621616, now seen corresponding path program 1 times [2022-07-22 21:30:06,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:06,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168451673] [2022-07-22 21:30:06,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:06,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:06,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:06,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:06,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168451673] [2022-07-22 21:30:06,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168451673] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:06,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:06,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:30:06,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125195617] [2022-07-22 21:30:06,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:06,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 21:30:06,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:06,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 21:30:06,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 21:30:06,602 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 158 [2022-07-22 21:30:06,608 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 148 transitions, 299 flow. Second operand has 2 states, 2 states have (on average 151.0) internal successors, (302), 2 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:06,608 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:06,608 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 158 [2022-07-22 21:30:06,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:06,662 INFO L129 PetriNetUnfolder]: 4/142 cut-off events. [2022-07-22 21:30:06,662 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-22 21:30:06,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 142 events. 4/142 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 214 event pairs, 0 based on Foata normal form. 6/141 useless extension candidates. Maximal degree in co-relation 110. Up to 2 conditions per place. [2022-07-22 21:30:06,668 INFO L132 encePairwiseOnDemand]: 152/158 looper letters, 1 selfloop transitions, 0 changer transitions 0/142 dead transitions. [2022-07-22 21:30:06,668 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 142 transitions, 289 flow [2022-07-22 21:30:06,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 21:30:06,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-22 21:30:06,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 307 transitions. [2022-07-22 21:30:06,687 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9715189873417721 [2022-07-22 21:30:06,688 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 307 transitions. [2022-07-22 21:30:06,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 307 transitions. [2022-07-22 21:30:06,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:06,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 307 transitions. [2022-07-22 21:30:06,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 153.5) internal successors, (307), 2 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:06,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:06,712 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:06,714 INFO L186 Difference]: Start difference. First operand has 142 places, 148 transitions, 299 flow. Second operand 2 states and 307 transitions. [2022-07-22 21:30:06,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 142 transitions, 289 flow [2022-07-22 21:30:06,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 142 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:30:06,723 INFO L242 Difference]: Finished difference. Result has 142 places, 142 transitions, 286 flow [2022-07-22 21:30:06,725 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=286, PETRI_PLACES=142, PETRI_TRANSITIONS=142} [2022-07-22 21:30:06,728 INFO L279 CegarLoopForPetriNet]: 142 programPoint places, 0 predicate places. [2022-07-22 21:30:06,729 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 142 transitions, 286 flow [2022-07-22 21:30:06,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 151.0) internal successors, (302), 2 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:06,729 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:06,729 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:30:06,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:30:06,730 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:30:06,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:06,731 INFO L85 PathProgramCache]: Analyzing trace with hash 506434889, now seen corresponding path program 1 times [2022-07-22 21:30:06,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:06,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943795892] [2022-07-22 21:30:06,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:06,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:06,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:06,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:06,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943795892] [2022-07-22 21:30:06,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943795892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:06,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:06,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:30:06,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055316055] [2022-07-22 21:30:06,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:06,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:30:06,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:06,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:30:06,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:30:06,853 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 158 [2022-07-22 21:30:06,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 142 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:06,858 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:06,859 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 158 [2022-07-22 21:30:06,859 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:06,937 INFO L129 PetriNetUnfolder]: 5/185 cut-off events. [2022-07-22 21:30:06,937 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:30:06,940 INFO L84 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 185 events. 5/185 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 161 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 196. Up to 7 conditions per place. [2022-07-22 21:30:06,941 INFO L132 encePairwiseOnDemand]: 155/158 looper letters, 7 selfloop transitions, 2 changer transitions 0/145 dead transitions. [2022-07-22 21:30:06,942 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 145 transitions, 310 flow [2022-07-22 21:30:06,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:30:06,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:30:06,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 445 transitions. [2022-07-22 21:30:06,945 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9388185654008439 [2022-07-22 21:30:06,945 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 445 transitions. [2022-07-22 21:30:06,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 445 transitions. [2022-07-22 21:30:06,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:06,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 445 transitions. [2022-07-22 21:30:06,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:06,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:06,950 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:06,950 INFO L186 Difference]: Start difference. First operand has 142 places, 142 transitions, 286 flow. Second operand 3 states and 445 transitions. [2022-07-22 21:30:06,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 145 transitions, 310 flow [2022-07-22 21:30:06,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 145 transitions, 310 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:30:06,958 INFO L242 Difference]: Finished difference. Result has 145 places, 143 transitions, 298 flow [2022-07-22 21:30:06,958 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=145, PETRI_TRANSITIONS=143} [2022-07-22 21:30:06,959 INFO L279 CegarLoopForPetriNet]: 142 programPoint places, 3 predicate places. [2022-07-22 21:30:06,959 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 143 transitions, 298 flow [2022-07-22 21:30:06,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:06,960 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:06,961 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:30:06,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:30:06,961 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:30:06,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:06,962 INFO L85 PathProgramCache]: Analyzing trace with hash -654644372, now seen corresponding path program 1 times [2022-07-22 21:30:06,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:06,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081059490] [2022-07-22 21:30:06,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:06,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:07,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:07,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:07,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081059490] [2022-07-22 21:30:07,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081059490] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:07,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:07,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-22 21:30:07,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362847768] [2022-07-22 21:30:07,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:07,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 21:30:07,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:07,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 21:30:07,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-07-22 21:30:07,469 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 158 [2022-07-22 21:30:07,471 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 143 transitions, 298 flow. Second operand has 18 states, 18 states have (on average 88.27777777777777) internal successors, (1589), 18 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:07,472 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:07,472 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 158 [2022-07-22 21:30:07,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:09,650 INFO L129 PetriNetUnfolder]: 583/2004 cut-off events. [2022-07-22 21:30:09,651 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-22 21:30:09,656 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3132 conditions, 2004 events. 583/2004 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 12919 event pairs, 252 based on Foata normal form. 0/1894 useless extension candidates. Maximal degree in co-relation 3127. Up to 766 conditions per place. [2022-07-22 21:30:09,665 INFO L132 encePairwiseOnDemand]: 137/158 looper letters, 129 selfloop transitions, 34 changer transitions 10/255 dead transitions. [2022-07-22 21:30:09,665 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 255 transitions, 868 flow [2022-07-22 21:30:09,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-22 21:30:09,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-22 21:30:09,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2067 transitions. [2022-07-22 21:30:09,671 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5946490218642118 [2022-07-22 21:30:09,671 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2067 transitions. [2022-07-22 21:30:09,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2067 transitions. [2022-07-22 21:30:09,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:09,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2067 transitions. [2022-07-22 21:30:09,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 93.95454545454545) internal successors, (2067), 22 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:09,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 158.0) internal successors, (3634), 23 states have internal predecessors, (3634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:09,713 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 158.0) internal successors, (3634), 23 states have internal predecessors, (3634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:09,713 INFO L186 Difference]: Start difference. First operand has 145 places, 143 transitions, 298 flow. Second operand 22 states and 2067 transitions. [2022-07-22 21:30:09,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 255 transitions, 868 flow [2022-07-22 21:30:09,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 255 transitions, 866 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:30:09,720 INFO L242 Difference]: Finished difference. Result has 175 places, 174 transitions, 503 flow [2022-07-22 21:30:09,720 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=503, PETRI_PLACES=175, PETRI_TRANSITIONS=174} [2022-07-22 21:30:09,721 INFO L279 CegarLoopForPetriNet]: 142 programPoint places, 33 predicate places. [2022-07-22 21:30:09,721 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 174 transitions, 503 flow [2022-07-22 21:30:09,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 88.27777777777777) internal successors, (1589), 18 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:09,728 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:09,728 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:30:09,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:30:09,729 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:30:09,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:09,729 INFO L85 PathProgramCache]: Analyzing trace with hash 2143908831, now seen corresponding path program 1 times [2022-07-22 21:30:09,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:09,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435905737] [2022-07-22 21:30:09,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:09,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:10,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:10,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:10,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435905737] [2022-07-22 21:30:10,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435905737] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:10,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:10,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-22 21:30:10,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107546467] [2022-07-22 21:30:10,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:10,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-22 21:30:10,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:10,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-22 21:30:10,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2022-07-22 21:30:10,630 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 158 [2022-07-22 21:30:10,632 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 174 transitions, 503 flow. Second operand has 27 states, 27 states have (on average 77.0) internal successors, (2079), 27 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:10,632 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:10,632 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 158 [2022-07-22 21:30:10,632 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:15,983 INFO L129 PetriNetUnfolder]: 1897/5427 cut-off events. [2022-07-22 21:30:15,984 INFO L130 PetriNetUnfolder]: For 1616/1621 co-relation queries the response was YES. [2022-07-22 21:30:16,001 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11034 conditions, 5427 events. 1897/5427 cut-off events. For 1616/1621 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 38950 event pairs, 630 based on Foata normal form. 20/5210 useless extension candidates. Maximal degree in co-relation 11019. Up to 1877 conditions per place. [2022-07-22 21:30:16,025 INFO L132 encePairwiseOnDemand]: 125/158 looper letters, 337 selfloop transitions, 91 changer transitions 3/502 dead transitions. [2022-07-22 21:30:16,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 502 transitions, 2593 flow [2022-07-22 21:30:16,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-22 21:30:16,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-22 21:30:16,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3138 transitions. [2022-07-22 21:30:16,034 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5367772836127267 [2022-07-22 21:30:16,034 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3138 transitions. [2022-07-22 21:30:16,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3138 transitions. [2022-07-22 21:30:16,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:16,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3138 transitions. [2022-07-22 21:30:16,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 84.8108108108108) internal successors, (3138), 37 states have internal predecessors, (3138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:16,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 158.0) internal successors, (6004), 38 states have internal predecessors, (6004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:16,071 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 158.0) internal successors, (6004), 38 states have internal predecessors, (6004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:16,071 INFO L186 Difference]: Start difference. First operand has 175 places, 174 transitions, 503 flow. Second operand 37 states and 3138 transitions. [2022-07-22 21:30:16,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 502 transitions, 2593 flow [2022-07-22 21:30:16,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 502 transitions, 2582 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-22 21:30:16,101 INFO L242 Difference]: Finished difference. Result has 230 places, 255 transitions, 1245 flow [2022-07-22 21:30:16,102 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1245, PETRI_PLACES=230, PETRI_TRANSITIONS=255} [2022-07-22 21:30:16,104 INFO L279 CegarLoopForPetriNet]: 142 programPoint places, 88 predicate places. [2022-07-22 21:30:16,104 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 255 transitions, 1245 flow [2022-07-22 21:30:16,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 77.0) internal successors, (2079), 27 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:16,105 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:16,106 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:30:16,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:30:16,107 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:30:16,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:16,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1028678017, now seen corresponding path program 2 times [2022-07-22 21:30:16,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:16,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341552581] [2022-07-22 21:30:16,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:16,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:17,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:17,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:17,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341552581] [2022-07-22 21:30:17,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341552581] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:17,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:17,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-22 21:30:17,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833294941] [2022-07-22 21:30:17,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:17,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-22 21:30:17,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:17,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-22 21:30:17,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2022-07-22 21:30:17,050 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 158 [2022-07-22 21:30:17,052 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 255 transitions, 1245 flow. Second operand has 27 states, 27 states have (on average 77.0) internal successors, (2079), 27 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:17,052 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:17,052 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 158 [2022-07-22 21:30:17,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:22,259 INFO L129 PetriNetUnfolder]: 2297/6564 cut-off events. [2022-07-22 21:30:22,259 INFO L130 PetriNetUnfolder]: For 8315/8318 co-relation queries the response was YES. [2022-07-22 21:30:22,305 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16910 conditions, 6564 events. 2297/6564 cut-off events. For 8315/8318 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 50226 event pairs, 433 based on Foata normal form. 18/6299 useless extension candidates. Maximal degree in co-relation 16870. Up to 2347 conditions per place. [2022-07-22 21:30:22,338 INFO L132 encePairwiseOnDemand]: 125/158 looper letters, 367 selfloop transitions, 116 changer transitions 1/555 dead transitions. [2022-07-22 21:30:22,338 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 555 transitions, 3917 flow [2022-07-22 21:30:22,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-22 21:30:22,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-22 21:30:22,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3117 transitions. [2022-07-22 21:30:22,347 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5331850838179952 [2022-07-22 21:30:22,347 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3117 transitions. [2022-07-22 21:30:22,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3117 transitions. [2022-07-22 21:30:22,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:22,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3117 transitions. [2022-07-22 21:30:22,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 84.24324324324324) internal successors, (3117), 37 states have internal predecessors, (3117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:22,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 158.0) internal successors, (6004), 38 states have internal predecessors, (6004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:22,368 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 158.0) internal successors, (6004), 38 states have internal predecessors, (6004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:22,368 INFO L186 Difference]: Start difference. First operand has 230 places, 255 transitions, 1245 flow. Second operand 37 states and 3117 transitions. [2022-07-22 21:30:22,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 555 transitions, 3917 flow [2022-07-22 21:30:22,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 555 transitions, 3890 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-07-22 21:30:22,406 INFO L242 Difference]: Finished difference. Result has 283 places, 326 transitions, 2220 flow [2022-07-22 21:30:22,407 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2220, PETRI_PLACES=283, PETRI_TRANSITIONS=326} [2022-07-22 21:30:22,410 INFO L279 CegarLoopForPetriNet]: 142 programPoint places, 141 predicate places. [2022-07-22 21:30:22,410 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 326 transitions, 2220 flow [2022-07-22 21:30:22,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 77.0) internal successors, (2079), 27 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:22,411 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:22,412 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:30:22,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:30:22,413 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:30:22,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:22,414 INFO L85 PathProgramCache]: Analyzing trace with hash 386609675, now seen corresponding path program 3 times [2022-07-22 21:30:22,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:22,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835733063] [2022-07-22 21:30:22,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:22,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:23,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:23,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:23,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835733063] [2022-07-22 21:30:23,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835733063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:23,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:23,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-07-22 21:30:23,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354377742] [2022-07-22 21:30:23,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:23,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-22 21:30:23,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:23,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-22 21:30:23,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2022-07-22 21:30:23,094 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 158 [2022-07-22 21:30:23,096 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 326 transitions, 2220 flow. Second operand has 25 states, 25 states have (on average 81.08) internal successors, (2027), 25 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:23,096 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:23,096 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 158 [2022-07-22 21:30:23,096 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:28,551 INFO L129 PetriNetUnfolder]: 2442/7287 cut-off events. [2022-07-22 21:30:28,552 INFO L130 PetriNetUnfolder]: For 22087/22240 co-relation queries the response was YES. [2022-07-22 21:30:28,622 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23478 conditions, 7287 events. 2442/7287 cut-off events. For 22087/22240 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 60567 event pairs, 641 based on Foata normal form. 71/7097 useless extension candidates. Maximal degree in co-relation 23415. Up to 2662 conditions per place. [2022-07-22 21:30:28,654 INFO L132 encePairwiseOnDemand]: 129/158 looper letters, 403 selfloop transitions, 154 changer transitions 14/650 dead transitions. [2022-07-22 21:30:28,654 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 650 transitions, 5727 flow [2022-07-22 21:30:28,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-22 21:30:28,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-22 21:30:28,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 3356 transitions. [2022-07-22 21:30:28,663 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.558960692871419 [2022-07-22 21:30:28,663 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 3356 transitions. [2022-07-22 21:30:28,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 3356 transitions. [2022-07-22 21:30:28,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:28,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 3356 transitions. [2022-07-22 21:30:28,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 88.3157894736842) internal successors, (3356), 38 states have internal predecessors, (3356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:28,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 158.0) internal successors, (6162), 39 states have internal predecessors, (6162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:28,683 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 158.0) internal successors, (6162), 39 states have internal predecessors, (6162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:28,684 INFO L186 Difference]: Start difference. First operand has 283 places, 326 transitions, 2220 flow. Second operand 38 states and 3356 transitions. [2022-07-22 21:30:28,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 650 transitions, 5727 flow [2022-07-22 21:30:28,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 650 transitions, 5477 flow, removed 96 selfloop flow, removed 8 redundant places. [2022-07-22 21:30:28,789 INFO L242 Difference]: Finished difference. Result has 340 places, 442 transitions, 3821 flow [2022-07-22 21:30:28,790 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=2040, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3821, PETRI_PLACES=340, PETRI_TRANSITIONS=442} [2022-07-22 21:30:28,791 INFO L279 CegarLoopForPetriNet]: 142 programPoint places, 198 predicate places. [2022-07-22 21:30:28,791 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 442 transitions, 3821 flow [2022-07-22 21:30:28,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 81.08) internal successors, (2027), 25 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:28,792 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:28,792 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:30:28,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:30:28,792 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:30:28,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:28,793 INFO L85 PathProgramCache]: Analyzing trace with hash -272440345, now seen corresponding path program 4 times [2022-07-22 21:30:28,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:28,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23961368] [2022-07-22 21:30:28,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:28,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:29,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:29,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:29,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23961368] [2022-07-22 21:30:29,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23961368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:29,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:29,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-22 21:30:29,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686891255] [2022-07-22 21:30:29,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:29,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-22 21:30:29,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:29,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-22 21:30:29,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2022-07-22 21:30:29,489 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 158 [2022-07-22 21:30:29,490 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 442 transitions, 3821 flow. Second operand has 27 states, 27 states have (on average 77.0) internal successors, (2079), 27 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:29,490 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:29,491 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 158 [2022-07-22 21:30:29,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:37,530 INFO L129 PetriNetUnfolder]: 3780/10283 cut-off events. [2022-07-22 21:30:37,530 INFO L130 PetriNetUnfolder]: For 52525/52534 co-relation queries the response was YES. [2022-07-22 21:30:37,621 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37037 conditions, 10283 events. 3780/10283 cut-off events. For 52525/52534 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 86252 event pairs, 937 based on Foata normal form. 20/9845 useless extension candidates. Maximal degree in co-relation 36946. Up to 4127 conditions per place. [2022-07-22 21:30:37,662 INFO L132 encePairwiseOnDemand]: 125/158 looper letters, 628 selfloop transitions, 206 changer transitions 1/906 dead transitions. [2022-07-22 21:30:37,663 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 906 transitions, 9389 flow [2022-07-22 21:30:37,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-07-22 21:30:37,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-07-22 21:30:37,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 4345 transitions. [2022-07-22 21:30:37,674 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5288461538461539 [2022-07-22 21:30:37,674 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 4345 transitions. [2022-07-22 21:30:37,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 4345 transitions. [2022-07-22 21:30:37,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:37,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 4345 transitions. [2022-07-22 21:30:37,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 83.5576923076923) internal successors, (4345), 52 states have internal predecessors, (4345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:37,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 158.0) internal successors, (8374), 53 states have internal predecessors, (8374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:37,712 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 158.0) internal successors, (8374), 53 states have internal predecessors, (8374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:37,712 INFO L186 Difference]: Start difference. First operand has 340 places, 442 transitions, 3821 flow. Second operand 52 states and 4345 transitions. [2022-07-22 21:30:37,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 906 transitions, 9389 flow [2022-07-22 21:30:37,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 906 transitions, 8801 flow, removed 273 selfloop flow, removed 8 redundant places. [2022-07-22 21:30:37,954 INFO L242 Difference]: Finished difference. Result has 422 places, 558 transitions, 5495 flow [2022-07-22 21:30:37,955 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=3530, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=5495, PETRI_PLACES=422, PETRI_TRANSITIONS=558} [2022-07-22 21:30:37,955 INFO L279 CegarLoopForPetriNet]: 142 programPoint places, 280 predicate places. [2022-07-22 21:30:37,956 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 558 transitions, 5495 flow [2022-07-22 21:30:37,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 77.0) internal successors, (2079), 27 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:37,957 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:37,957 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:30:37,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:30:37,957 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:30:37,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:37,958 INFO L85 PathProgramCache]: Analyzing trace with hash -2018981907, now seen corresponding path program 5 times [2022-07-22 21:30:37,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:37,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528104914] [2022-07-22 21:30:37,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:37,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:38,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:38,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:38,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528104914] [2022-07-22 21:30:38,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528104914] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:38,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:38,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-07-22 21:30:38,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416568650] [2022-07-22 21:30:38,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:38,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-22 21:30:38,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:38,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-22 21:30:38,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2022-07-22 21:30:38,546 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 158 [2022-07-22 21:30:38,610 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 558 transitions, 5495 flow. Second operand has 25 states, 25 states have (on average 81.08) internal successors, (2027), 25 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:38,611 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:38,611 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 158 [2022-07-22 21:30:38,611 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:45,540 INFO L129 PetriNetUnfolder]: 3051/8965 cut-off events. [2022-07-22 21:30:45,540 INFO L130 PetriNetUnfolder]: For 68934/69174 co-relation queries the response was YES. [2022-07-22 21:30:45,634 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35628 conditions, 8965 events. 3051/8965 cut-off events. For 68934/69174 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 78821 event pairs, 695 based on Foata normal form. 96/8759 useless extension candidates. Maximal degree in co-relation 35498. Up to 2575 conditions per place. [2022-07-22 21:30:45,674 INFO L132 encePairwiseOnDemand]: 129/158 looper letters, 483 selfloop transitions, 297 changer transitions 13/906 dead transitions. [2022-07-22 21:30:45,675 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 906 transitions, 10356 flow [2022-07-22 21:30:45,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-22 21:30:45,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-07-22 21:30:45,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 3496 transitions. [2022-07-22 21:30:45,687 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5531645569620253 [2022-07-22 21:30:45,687 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 3496 transitions. [2022-07-22 21:30:45,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 3496 transitions. [2022-07-22 21:30:45,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:45,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 3496 transitions. [2022-07-22 21:30:45,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 87.4) internal successors, (3496), 40 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:45,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 158.0) internal successors, (6478), 41 states have internal predecessors, (6478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:45,704 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 158.0) internal successors, (6478), 41 states have internal predecessors, (6478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:45,705 INFO L186 Difference]: Start difference. First operand has 422 places, 558 transitions, 5495 flow. Second operand 40 states and 3496 transitions. [2022-07-22 21:30:45,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 906 transitions, 10356 flow [2022-07-22 21:30:46,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 906 transitions, 9530 flow, removed 278 selfloop flow, removed 11 redundant places. [2022-07-22 21:30:46,130 INFO L242 Difference]: Finished difference. Result has 479 places, 641 transitions, 7061 flow [2022-07-22 21:30:46,132 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=4887, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=7061, PETRI_PLACES=479, PETRI_TRANSITIONS=641} [2022-07-22 21:30:46,133 INFO L279 CegarLoopForPetriNet]: 142 programPoint places, 337 predicate places. [2022-07-22 21:30:46,134 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 641 transitions, 7061 flow [2022-07-22 21:30:46,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 81.08) internal successors, (2027), 25 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:46,134 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:46,135 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:30:46,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:30:46,135 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:30:46,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:46,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1798415853, now seen corresponding path program 6 times [2022-07-22 21:30:46,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:46,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155276009] [2022-07-22 21:30:46,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:46,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:46,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:46,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:46,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155276009] [2022-07-22 21:30:46,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155276009] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:46,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:46,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-22 21:30:46,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078520532] [2022-07-22 21:30:46,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:46,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-22 21:30:46,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:46,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-22 21:30:46,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2022-07-22 21:30:46,817 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 158 [2022-07-22 21:30:46,819 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 641 transitions, 7061 flow. Second operand has 27 states, 27 states have (on average 77.0) internal successors, (2079), 27 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:46,819 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:46,819 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 158 [2022-07-22 21:30:46,819 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:54,465 INFO L129 PetriNetUnfolder]: 4564/12290 cut-off events. [2022-07-22 21:30:54,466 INFO L130 PetriNetUnfolder]: For 137254/137272 co-relation queries the response was YES. [2022-07-22 21:30:54,658 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54680 conditions, 12290 events. 4564/12290 cut-off events. For 137254/137272 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 107622 event pairs, 1170 based on Foata normal form. 23/11777 useless extension candidates. Maximal degree in co-relation 54521. Up to 5044 conditions per place. [2022-07-22 21:30:54,714 INFO L132 encePairwiseOnDemand]: 125/158 looper letters, 751 selfloop transitions, 237 changer transitions 1/1060 dead transitions. [2022-07-22 21:30:54,715 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 1060 transitions, 14648 flow [2022-07-22 21:30:54,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-22 21:30:54,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-22 21:30:54,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 3223 transitions. [2022-07-22 21:30:54,720 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5368087941372418 [2022-07-22 21:30:54,720 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 3223 transitions. [2022-07-22 21:30:54,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 3223 transitions. [2022-07-22 21:30:54,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:54,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 3223 transitions. [2022-07-22 21:30:54,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 84.8157894736842) internal successors, (3223), 38 states have internal predecessors, (3223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:54,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 158.0) internal successors, (6162), 39 states have internal predecessors, (6162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:54,735 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 158.0) internal successors, (6162), 39 states have internal predecessors, (6162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:54,735 INFO L186 Difference]: Start difference. First operand has 479 places, 641 transitions, 7061 flow. Second operand 38 states and 3223 transitions. [2022-07-22 21:30:54,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 1060 transitions, 14648 flow [2022-07-22 21:30:55,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 1060 transitions, 14221 flow, removed 142 selfloop flow, removed 10 redundant places. [2022-07-22 21:30:55,423 INFO L242 Difference]: Finished difference. Result has 530 places, 710 transitions, 8793 flow [2022-07-22 21:30:55,424 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=6716, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8793, PETRI_PLACES=530, PETRI_TRANSITIONS=710} [2022-07-22 21:30:55,424 INFO L279 CegarLoopForPetriNet]: 142 programPoint places, 388 predicate places. [2022-07-22 21:30:55,424 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 710 transitions, 8793 flow [2022-07-22 21:30:55,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 77.0) internal successors, (2079), 27 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:55,425 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:55,425 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:30:55,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 21:30:55,426 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:30:55,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:55,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1882222283, now seen corresponding path program 7 times [2022-07-22 21:30:55,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:55,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771011760] [2022-07-22 21:30:55,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:55,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:56,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:56,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:56,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771011760] [2022-07-22 21:30:56,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771011760] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:56,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:56,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-22 21:30:56,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917641733] [2022-07-22 21:30:56,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:56,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-22 21:30:56,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:56,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-22 21:30:56,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2022-07-22 21:30:56,160 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 158 [2022-07-22 21:30:56,161 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 710 transitions, 8793 flow. Second operand has 27 states, 27 states have (on average 77.0) internal successors, (2079), 27 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:56,161 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:56,162 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 158 [2022-07-22 21:30:56,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:31:06,509 INFO L129 PetriNetUnfolder]: 5116/13437 cut-off events. [2022-07-22 21:31:06,509 INFO L130 PetriNetUnfolder]: For 193654/193677 co-relation queries the response was YES. [2022-07-22 21:31:06,749 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65680 conditions, 13437 events. 5116/13437 cut-off events. For 193654/193677 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 118550 event pairs, 1471 based on Foata normal form. 32/12907 useless extension candidates. Maximal degree in co-relation 65498. Up to 5629 conditions per place. [2022-07-22 21:31:06,800 INFO L132 encePairwiseOnDemand]: 125/158 looper letters, 801 selfloop transitions, 279 changer transitions 20/1171 dead transitions. [2022-07-22 21:31:06,800 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 1171 transitions, 16291 flow [2022-07-22 21:31:06,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-07-22 21:31:06,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-07-22 21:31:06,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 4435 transitions. [2022-07-22 21:31:06,808 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5398003894839338 [2022-07-22 21:31:06,808 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 4435 transitions. [2022-07-22 21:31:06,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 4435 transitions. [2022-07-22 21:31:06,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:31:06,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 4435 transitions. [2022-07-22 21:31:06,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 85.28846153846153) internal successors, (4435), 52 states have internal predecessors, (4435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:06,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 158.0) internal successors, (8374), 53 states have internal predecessors, (8374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:06,830 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 158.0) internal successors, (8374), 53 states have internal predecessors, (8374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:06,830 INFO L186 Difference]: Start difference. First operand has 530 places, 710 transitions, 8793 flow. Second operand 52 states and 4435 transitions. [2022-07-22 21:31:06,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 1171 transitions, 16291 flow [2022-07-22 21:31:07,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 1171 transitions, 15573 flow, removed 265 selfloop flow, removed 10 redundant places. [2022-07-22 21:31:07,766 INFO L242 Difference]: Finished difference. Result has 602 places, 814 transitions, 10871 flow [2022-07-22 21:31:07,767 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=8193, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=10871, PETRI_PLACES=602, PETRI_TRANSITIONS=814} [2022-07-22 21:31:07,768 INFO L279 CegarLoopForPetriNet]: 142 programPoint places, 460 predicate places. [2022-07-22 21:31:07,768 INFO L495 AbstractCegarLoop]: Abstraction has has 602 places, 814 transitions, 10871 flow [2022-07-22 21:31:07,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 77.0) internal successors, (2079), 27 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:07,769 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:31:07,769 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:31:07,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 21:31:07,769 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:31:07,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:31:07,770 INFO L85 PathProgramCache]: Analyzing trace with hash -372240893, now seen corresponding path program 8 times [2022-07-22 21:31:07,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:31:07,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366962180] [2022-07-22 21:31:07,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:31:07,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:31:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:31:08,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:31:08,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:31:08,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366962180] [2022-07-22 21:31:08,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366962180] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:31:08,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:31:08,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-22 21:31:08,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115776464] [2022-07-22 21:31:08,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:31:08,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-22 21:31:08,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:31:08,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-22 21:31:08,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2022-07-22 21:31:08,556 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 158 [2022-07-22 21:31:08,557 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 602 places, 814 transitions, 10871 flow. Second operand has 27 states, 27 states have (on average 77.0) internal successors, (2079), 27 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:08,557 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:31:08,557 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 158 [2022-07-22 21:31:08,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:31:18,402 INFO L129 PetriNetUnfolder]: 5839/15559 cut-off events. [2022-07-22 21:31:18,402 INFO L130 PetriNetUnfolder]: For 284767/284795 co-relation queries the response was YES. [2022-07-22 21:31:18,755 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80509 conditions, 15559 events. 5839/15559 cut-off events. For 284767/284795 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 142983 event pairs, 1514 based on Foata normal form. 25/14910 useless extension candidates. Maximal degree in co-relation 80296. Up to 6796 conditions per place. [2022-07-22 21:31:18,815 INFO L132 encePairwiseOnDemand]: 125/158 looper letters, 945 selfloop transitions, 228 changer transitions 1/1245 dead transitions. [2022-07-22 21:31:18,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 642 places, 1245 transitions, 19252 flow [2022-07-22 21:31:18,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-22 21:31:18,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-07-22 21:31:18,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 3495 transitions. [2022-07-22 21:31:18,822 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.539518369867243 [2022-07-22 21:31:18,822 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 3495 transitions. [2022-07-22 21:31:18,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 3495 transitions. [2022-07-22 21:31:18,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:31:18,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 3495 transitions. [2022-07-22 21:31:18,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 85.2439024390244) internal successors, (3495), 41 states have internal predecessors, (3495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:18,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 158.0) internal successors, (6636), 42 states have internal predecessors, (6636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:18,837 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 158.0) internal successors, (6636), 42 states have internal predecessors, (6636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:18,837 INFO L186 Difference]: Start difference. First operand has 602 places, 814 transitions, 10871 flow. Second operand 41 states and 3495 transitions. [2022-07-22 21:31:18,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 642 places, 1245 transitions, 19252 flow [2022-07-22 21:31:20,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 633 places, 1245 transitions, 18651 flow, removed 224 selfloop flow, removed 9 redundant places. [2022-07-22 21:31:20,487 INFO L242 Difference]: Finished difference. Result has 663 places, 907 transitions, 13112 flow [2022-07-22 21:31:20,489 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=10316, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=814, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=640, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=13112, PETRI_PLACES=663, PETRI_TRANSITIONS=907} [2022-07-22 21:31:20,489 INFO L279 CegarLoopForPetriNet]: 142 programPoint places, 521 predicate places. [2022-07-22 21:31:20,489 INFO L495 AbstractCegarLoop]: Abstraction has has 663 places, 907 transitions, 13112 flow [2022-07-22 21:31:20,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 77.0) internal successors, (2079), 27 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:20,490 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:31:20,490 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:31:20,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 21:31:20,491 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:31:20,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:31:20,491 INFO L85 PathProgramCache]: Analyzing trace with hash -410028145, now seen corresponding path program 9 times [2022-07-22 21:31:20,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:31:20,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779221088] [2022-07-22 21:31:20,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:31:20,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:31:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:31:21,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:31:21,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:31:21,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779221088] [2022-07-22 21:31:21,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779221088] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:31:21,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:31:21,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-22 21:31:21,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788917407] [2022-07-22 21:31:21,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:31:21,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-22 21:31:21,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:31:21,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-22 21:31:21,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2022-07-22 21:31:21,045 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 158 [2022-07-22 21:31:21,047 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 907 transitions, 13112 flow. Second operand has 27 states, 27 states have (on average 77.0) internal successors, (2079), 27 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:21,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:31:21,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 158 [2022-07-22 21:31:21,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:31:32,838 INFO L129 PetriNetUnfolder]: 6433/16950 cut-off events. [2022-07-22 21:31:32,838 INFO L130 PetriNetUnfolder]: For 384785/384826 co-relation queries the response was YES. [2022-07-22 21:31:33,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95473 conditions, 16950 events. 6433/16950 cut-off events. For 384785/384826 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 158159 event pairs, 1638 based on Foata normal form. 37/16296 useless extension candidates. Maximal degree in co-relation 95230. Up to 7556 conditions per place. [2022-07-22 21:31:33,373 INFO L132 encePairwiseOnDemand]: 125/158 looper letters, 983 selfloop transitions, 240 changer transitions 15/1309 dead transitions. [2022-07-22 21:31:33,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 709 places, 1309 transitions, 21388 flow [2022-07-22 21:31:33,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-07-22 21:31:33,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-07-22 21:31:33,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 3993 transitions. [2022-07-22 21:31:33,525 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5377053595475357 [2022-07-22 21:31:33,525 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 3993 transitions. [2022-07-22 21:31:33,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 3993 transitions. [2022-07-22 21:31:33,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:31:33,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 3993 transitions. [2022-07-22 21:31:33,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 84.95744680851064) internal successors, (3993), 47 states have internal predecessors, (3993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:33,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 158.0) internal successors, (7584), 48 states have internal predecessors, (7584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:33,540 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 158.0) internal successors, (7584), 48 states have internal predecessors, (7584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:33,540 INFO L186 Difference]: Start difference. First operand has 663 places, 907 transitions, 13112 flow. Second operand 47 states and 3993 transitions. [2022-07-22 21:31:33,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 709 places, 1309 transitions, 21388 flow [2022-07-22 21:31:35,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 700 places, 1309 transitions, 20150 flow, removed 556 selfloop flow, removed 9 redundant places. [2022-07-22 21:31:35,697 INFO L242 Difference]: Finished difference. Result has 733 places, 1007 transitions, 15112 flow [2022-07-22 21:31:35,698 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=12141, PETRI_DIFFERENCE_MINUEND_PLACES=654, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=907, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=728, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=15112, PETRI_PLACES=733, PETRI_TRANSITIONS=1007} [2022-07-22 21:31:35,699 INFO L279 CegarLoopForPetriNet]: 142 programPoint places, 591 predicate places. [2022-07-22 21:31:35,699 INFO L495 AbstractCegarLoop]: Abstraction has has 733 places, 1007 transitions, 15112 flow [2022-07-22 21:31:35,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 77.0) internal successors, (2079), 27 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:35,699 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:31:35,700 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:31:35,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 21:31:35,700 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:31:35,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:31:35,700 INFO L85 PathProgramCache]: Analyzing trace with hash -38733587, now seen corresponding path program 10 times [2022-07-22 21:31:35,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:31:35,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811981531] [2022-07-22 21:31:35,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:31:35,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:31:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:31:36,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:31:36,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:31:36,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811981531] [2022-07-22 21:31:36,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811981531] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:31:36,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:31:36,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-22 21:31:36,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122096270] [2022-07-22 21:31:36,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:31:36,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-22 21:31:36,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:31:36,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-22 21:31:36,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2022-07-22 21:31:36,316 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 158 [2022-07-22 21:31:36,317 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 733 places, 1007 transitions, 15112 flow. Second operand has 27 states, 27 states have (on average 77.0) internal successors, (2079), 27 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:36,317 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:31:36,317 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 158 [2022-07-22 21:31:36,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:31:50,093 INFO L129 PetriNetUnfolder]: 7016/18479 cut-off events. [2022-07-22 21:31:50,093 INFO L130 PetriNetUnfolder]: For 501567/501610 co-relation queries the response was YES. [2022-07-22 21:31:51,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107684 conditions, 18479 events. 7016/18479 cut-off events. For 501567/501610 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 175793 event pairs, 2075 based on Foata normal form. 29/17699 useless extension candidates. Maximal degree in co-relation 107408. Up to 8037 conditions per place. [2022-07-22 21:31:51,145 INFO L132 encePairwiseOnDemand]: 125/158 looper letters, 1115 selfloop transitions, 338 changer transitions 3/1527 dead transitions. [2022-07-22 21:31:51,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 779 places, 1527 transitions, 26741 flow [2022-07-22 21:31:51,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-07-22 21:31:51,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-07-22 21:31:51,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 3951 transitions. [2022-07-22 21:31:51,150 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5320495556154053 [2022-07-22 21:31:51,150 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 3951 transitions. [2022-07-22 21:31:51,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 3951 transitions. [2022-07-22 21:31:51,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:31:51,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 3951 transitions. [2022-07-22 21:31:51,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 84.06382978723404) internal successors, (3951), 47 states have internal predecessors, (3951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:51,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 158.0) internal successors, (7584), 48 states have internal predecessors, (7584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:51,165 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 158.0) internal successors, (7584), 48 states have internal predecessors, (7584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:51,165 INFO L186 Difference]: Start difference. First operand has 733 places, 1007 transitions, 15112 flow. Second operand 47 states and 3951 transitions. [2022-07-22 21:31:51,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 779 places, 1527 transitions, 26741 flow [2022-07-22 21:31:54,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 770 places, 1527 transitions, 25959 flow, removed 309 selfloop flow, removed 9 redundant places. [2022-07-22 21:31:54,407 INFO L242 Difference]: Finished difference. Result has 804 places, 1112 transitions, 18264 flow [2022-07-22 21:31:54,408 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=14363, PETRI_DIFFERENCE_MINUEND_PLACES=724, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1007, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=740, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=18264, PETRI_PLACES=804, PETRI_TRANSITIONS=1112} [2022-07-22 21:31:54,409 INFO L279 CegarLoopForPetriNet]: 142 programPoint places, 662 predicate places. [2022-07-22 21:31:54,409 INFO L495 AbstractCegarLoop]: Abstraction has has 804 places, 1112 transitions, 18264 flow [2022-07-22 21:31:54,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 77.0) internal successors, (2079), 27 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:54,410 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:31:54,410 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:31:54,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 21:31:54,411 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:31:54,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:31:54,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1101197857, now seen corresponding path program 11 times [2022-07-22 21:31:54,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:31:54,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641952123] [2022-07-22 21:31:54,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:31:54,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:31:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:31:55,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:31:55,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:31:55,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641952123] [2022-07-22 21:31:55,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641952123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:31:55,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:31:55,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-22 21:31:55,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675424266] [2022-07-22 21:31:55,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:31:55,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-22 21:31:55,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:31:55,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-22 21:31:55,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2022-07-22 21:31:55,051 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 158 [2022-07-22 21:31:55,052 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 804 places, 1112 transitions, 18264 flow. Second operand has 27 states, 27 states have (on average 77.0) internal successors, (2079), 27 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:55,052 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:31:55,052 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 158 [2022-07-22 21:31:55,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand