./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/divinefifo-bug_1w1r.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 32482febe38d61a93fd0705f3ad97c9c1ccc991b1238f75e4d1dd99bfb01c35e --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:14:53,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:14:53,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:14:53,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:14:53,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:14:53,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:14:53,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:14:53,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:14:53,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:14:53,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:14:53,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:14:53,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:14:53,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:14:53,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:14:53,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:14:53,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:14:53,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:14:53,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:14:53,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:14:53,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:14:53,736 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:14:53,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:14:53,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:14:53,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:14:53,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:14:53,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:14:53,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:14:53,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:14:53,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:14:53,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:14:53,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:14:53,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:14:53,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:14:53,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:14:53,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:14:53,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:14:53,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:14:53,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:14:53,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:14:53,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:14:53,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:14:53,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:14:53,750 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:14:53,774 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:14:53,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:14:53,775 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:14:53,775 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:14:53,775 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:14:53,776 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:14:53,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:14:53,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:14:53,776 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:14:53,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:14:53,777 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:14:53,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:14:53,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:14:53,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:14:53,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:14:53,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:14:53,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:14:53,778 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:14:53,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:14:53,778 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:14:53,779 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:14:53,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:14:53,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:14:53,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:14:53,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:14:53,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:14:53,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:14:53,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:14:53,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:14:53,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:14:53,780 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:14:53,781 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:14:53,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:14:53,781 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32482febe38d61a93fd0705f3ad97c9c1ccc991b1238f75e4d1dd99bfb01c35e [2022-07-19 21:14:53,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:14:53,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:14:53,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:14:54,000 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:14:54,000 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:14:54,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i [2022-07-19 21:14:54,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55e66a840/cae55bb5f8ec49f1b7a0aed20b5cf09a/FLAG24f25dc13 [2022-07-19 21:14:54,438 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:14:54,439 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i [2022-07-19 21:14:54,448 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55e66a840/cae55bb5f8ec49f1b7a0aed20b5cf09a/FLAG24f25dc13 [2022-07-19 21:14:54,799 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55e66a840/cae55bb5f8ec49f1b7a0aed20b5cf09a [2022-07-19 21:14:54,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:14:54,802 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:14:54,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:14:54,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:14:54,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:14:54,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41f9e6c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54, skipping insertion in model container [2022-07-19 21:14:54,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,813 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:14:54,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:14:54,962 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-19 21:14:55,193 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/divinefifo-bug_1w1r.i[47275,47288] [2022-07-19 21:14:55,199 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/divinefifo-bug_1w1r.i[47463,47476] [2022-07-19 21:14:55,214 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/divinefifo-bug_1w1r.i[48230,48243] [2022-07-19 21:14:55,216 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/divinefifo-bug_1w1r.i[48344,48357] [2022-07-19 21:14:55,224 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/divinefifo-bug_1w1r.i[48816,48829] [2022-07-19 21:14:55,225 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/divinefifo-bug_1w1r.i[48872,48885] [2022-07-19 21:14:55,237 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/divinefifo-bug_1w1r.i[49384,49397] [2022-07-19 21:14:55,238 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/divinefifo-bug_1w1r.i[49443,49456] [2022-07-19 21:14:55,239 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/divinefifo-bug_1w1r.i[49522,49535] [2022-07-19 21:14:55,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:14:55,246 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:14:55,261 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-19 21:14:55,273 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/divinefifo-bug_1w1r.i[47275,47288] [2022-07-19 21:14:55,274 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/divinefifo-bug_1w1r.i[47463,47476] [2022-07-19 21:14:55,277 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/divinefifo-bug_1w1r.i[48230,48243] [2022-07-19 21:14:55,277 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/divinefifo-bug_1w1r.i[48344,48357] [2022-07-19 21:14:55,279 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/divinefifo-bug_1w1r.i[48816,48829] [2022-07-19 21:14:55,279 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/divinefifo-bug_1w1r.i[48872,48885] [2022-07-19 21:14:55,282 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/divinefifo-bug_1w1r.i[49384,49397] [2022-07-19 21:14:55,282 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/divinefifo-bug_1w1r.i[49443,49456] [2022-07-19 21:14:55,283 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/divinefifo-bug_1w1r.i[49522,49535] [2022-07-19 21:14:55,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:14:55,317 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:14:55,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:55 WrapperNode [2022-07-19 21:14:55,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:14:55,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:14:55,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:14:55,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:14:55,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:55" (1/1) ... [2022-07-19 21:14:55,336 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:55" (1/1) ... [2022-07-19 21:14:55,368 INFO L137 Inliner]: procedures = 278, calls = 103, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 416 [2022-07-19 21:14:55,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:14:55,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:14:55,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:14:55,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:14:55,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:55" (1/1) ... [2022-07-19 21:14:55,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:55" (1/1) ... [2022-07-19 21:14:55,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:55" (1/1) ... [2022-07-19 21:14:55,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:55" (1/1) ... [2022-07-19 21:14:55,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:55" (1/1) ... [2022-07-19 21:14:55,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:55" (1/1) ... [2022-07-19 21:14:55,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:55" (1/1) ... [2022-07-19 21:14:55,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:14:55,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:14:55,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:14:55,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:14:55,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:55" (1/1) ... [2022-07-19 21:14:55,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:14:55,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:14:55,436 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) [2022-07-19 21:14:55,451 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 [2022-07-19 21:14:55,461 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-07-19 21:14:55,462 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-07-19 21:14:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:14:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 21:14:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:14:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:14:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:14:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 21:14:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:14:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 21:14:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:14:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:14:55,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:14:55,463 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:14:55,614 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:14:55,615 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:14:56,076 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:14:56,091 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:14:56,092 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-19 21:14:56,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:14:56 BoogieIcfgContainer [2022-07-19 21:14:56,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:14:56,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:14:56,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:14:56,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:14:56,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:14:54" (1/3) ... [2022-07-19 21:14:56,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ace0552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:14:56, skipping insertion in model container [2022-07-19 21:14:56,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:55" (2/3) ... [2022-07-19 21:14:56,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ace0552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:14:56, skipping insertion in model container [2022-07-19 21:14:56,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:14:56" (3/3) ... [2022-07-19 21:14:56,102 INFO L111 eAbstractionObserver]: Analyzing ICFG divinefifo-bug_1w1r.i [2022-07-19 21:14:56,106 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:14:56,113 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:14:56,114 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-07-19 21:14:56,114 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:14:56,172 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-19 21:14:56,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 478 places, 507 transitions, 1022 flow [2022-07-19 21:14:56,311 INFO L129 PetriNetUnfolder]: 33/506 cut-off events. [2022-07-19 21:14:56,311 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-19 21:14:56,320 INFO L84 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 506 events. 33/506 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1167 event pairs, 0 based on Foata normal form. 0/462 useless extension candidates. Maximal degree in co-relation 352. Up to 3 conditions per place. [2022-07-19 21:14:56,320 INFO L82 GeneralOperation]: Start removeDead. Operand has 478 places, 507 transitions, 1022 flow [2022-07-19 21:14:56,330 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 459 places, 487 transitions, 980 flow [2022-07-19 21:14:56,343 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:14:56,349 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@278b9ea0, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7ceb56f [2022-07-19 21:14:56,349 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-07-19 21:14:56,365 INFO L129 PetriNetUnfolder]: 2/69 cut-off events. [2022-07-19 21:14:56,365 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:14:56,365 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:14:56,368 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:14:56,369 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-19 21:14:56,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:14:56,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1954338316, now seen corresponding path program 1 times [2022-07-19 21:14:56,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:14:56,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049359714] [2022-07-19 21:14:56,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:14:56,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:14:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:14:56,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:14:56,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:14:56,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049359714] [2022-07-19 21:14:56,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049359714] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:14:56,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:14:56,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 21:14:56,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104565833] [2022-07-19 21:14:56,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:14:56,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 21:14:56,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:14:56,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 21:14:56,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-19 21:14:56,915 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 507 [2022-07-19 21:14:56,923 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 487 transitions, 980 flow. Second operand has 12 states, 12 states have (on average 315.9166666666667) internal successors, (3791), 12 states have internal predecessors, (3791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:14:56,923 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:14:56,923 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 507 [2022-07-19 21:14:56,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:14:58,390 INFO L129 PetriNetUnfolder]: 1991/7285 cut-off events. [2022-07-19 21:14:58,390 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-19 21:14:58,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10818 conditions, 7285 events. 1991/7285 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 61791 event pairs, 1183 based on Foata normal form. 432/7200 useless extension candidates. Maximal degree in co-relation 10622. Up to 2824 conditions per place. [2022-07-19 21:14:58,425 INFO L132 encePairwiseOnDemand]: 468/507 looper letters, 166 selfloop transitions, 24 changer transitions 0/487 dead transitions. [2022-07-19 21:14:58,425 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 487 transitions, 1360 flow [2022-07-19 21:14:58,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:14:58,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-19 21:14:58,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4602 transitions. [2022-07-19 21:14:58,442 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6483516483516484 [2022-07-19 21:14:58,443 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4602 transitions. [2022-07-19 21:14:58,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4602 transitions. [2022-07-19 21:14:58,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:14:58,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4602 transitions. [2022-07-19 21:14:58,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 328.7142857142857) internal successors, (4602), 14 states have internal predecessors, (4602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:14:58,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 507.0) internal successors, (7605), 15 states have internal predecessors, (7605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:14:58,475 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 507.0) internal successors, (7605), 15 states have internal predecessors, (7605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:14:58,477 INFO L186 Difference]: Start difference. First operand has 459 places, 487 transitions, 980 flow. Second operand 14 states and 4602 transitions. [2022-07-19 21:14:58,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 487 transitions, 1360 flow [2022-07-19 21:14:58,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 487 transitions, 1356 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:14:58,490 INFO L242 Difference]: Finished difference. Result has 470 places, 472 transitions, 994 flow [2022-07-19 21:14:58,492 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=946, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=994, PETRI_PLACES=470, PETRI_TRANSITIONS=472} [2022-07-19 21:14:58,494 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 11 predicate places. [2022-07-19 21:14:58,495 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 472 transitions, 994 flow [2022-07-19 21:14:58,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 315.9166666666667) internal successors, (3791), 12 states have internal predecessors, (3791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:14:58,497 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:14:58,497 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:14:58,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:14:58,497 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-19 21:14:58,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:14:58,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1408163568, now seen corresponding path program 1 times [2022-07-19 21:14:58,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:14:58,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334578081] [2022-07-19 21:14:58,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:14:58,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:14:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:14:59,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:14:59,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:14:59,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334578081] [2022-07-19 21:14:59,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334578081] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:14:59,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:14:59,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-19 21:14:59,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26953639] [2022-07-19 21:14:59,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:14:59,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-19 21:14:59,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:14:59,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-19 21:14:59,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2022-07-19 21:14:59,010 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 507 [2022-07-19 21:14:59,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 472 transitions, 994 flow. Second operand has 22 states, 22 states have (on average 269.95454545454544) internal successors, (5939), 22 states have internal predecessors, (5939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:14:59,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:14:59,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 507 [2022-07-19 21:14:59,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:15:02,819 INFO L129 PetriNetUnfolder]: 4756/14876 cut-off events. [2022-07-19 21:15:02,819 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-07-19 21:15:02,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23924 conditions, 14876 events. 4756/14876 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 134271 event pairs, 168 based on Foata normal form. 0/14155 useless extension candidates. Maximal degree in co-relation 20413. Up to 3612 conditions per place. [2022-07-19 21:15:02,887 INFO L132 encePairwiseOnDemand]: 462/507 looper letters, 387 selfloop transitions, 54 changer transitions 0/694 dead transitions. [2022-07-19 21:15:02,887 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 694 transitions, 2341 flow [2022-07-19 21:15:02,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-19 21:15:02,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-19 21:15:02,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 9018 transitions. [2022-07-19 21:15:02,901 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5558431952662722 [2022-07-19 21:15:02,901 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 9018 transitions. [2022-07-19 21:15:02,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 9018 transitions. [2022-07-19 21:15:02,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:15:02,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 9018 transitions. [2022-07-19 21:15:02,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 281.8125) internal successors, (9018), 32 states have internal predecessors, (9018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:02,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 507.0) internal successors, (16731), 33 states have internal predecessors, (16731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:02,943 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 507.0) internal successors, (16731), 33 states have internal predecessors, (16731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:02,943 INFO L186 Difference]: Start difference. First operand has 470 places, 472 transitions, 994 flow. Second operand 32 states and 9018 transitions. [2022-07-19 21:15:02,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 694 transitions, 2341 flow [2022-07-19 21:15:02,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 694 transitions, 2273 flow, removed 0 selfloop flow, removed 13 redundant places. [2022-07-19 21:15:02,959 INFO L242 Difference]: Finished difference. Result has 488 places, 487 transitions, 1119 flow [2022-07-19 21:15:02,960 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1119, PETRI_PLACES=488, PETRI_TRANSITIONS=487} [2022-07-19 21:15:02,960 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 29 predicate places. [2022-07-19 21:15:02,961 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 487 transitions, 1119 flow [2022-07-19 21:15:02,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 269.95454545454544) internal successors, (5939), 22 states have internal predecessors, (5939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:02,963 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:15:02,963 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:15:02,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:15:02,963 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-19 21:15:02,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:15:02,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1612565280, now seen corresponding path program 1 times [2022-07-19 21:15:02,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:15:02,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923013085] [2022-07-19 21:15:02,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:15:02,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:15:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:15:03,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:15:03,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:15:03,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923013085] [2022-07-19 21:15:03,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923013085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:15:03,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:15:03,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:15:03,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039862854] [2022-07-19 21:15:03,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:15:03,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:15:03,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:15:03,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:15:03,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:15:03,017 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 479 out of 507 [2022-07-19 21:15:03,019 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 487 transitions, 1119 flow. Second operand has 5 states, 5 states have (on average 480.6) internal successors, (2403), 5 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:03,019 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:15:03,019 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 479 of 507 [2022-07-19 21:15:03,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:15:03,116 INFO L129 PetriNetUnfolder]: 31/902 cut-off events. [2022-07-19 21:15:03,117 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-07-19 21:15:03,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 902 events. 31/902 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 2294 event pairs, 0 based on Foata normal form. 0/860 useless extension candidates. Maximal degree in co-relation 658. Up to 18 conditions per place. [2022-07-19 21:15:03,125 INFO L132 encePairwiseOnDemand]: 499/507 looper letters, 8 selfloop transitions, 7 changer transitions 0/488 dead transitions. [2022-07-19 21:15:03,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 488 transitions, 1148 flow [2022-07-19 21:15:03,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:15:03,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:15:03,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2411 transitions. [2022-07-19 21:15:03,131 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9510848126232742 [2022-07-19 21:15:03,131 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2411 transitions. [2022-07-19 21:15:03,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2411 transitions. [2022-07-19 21:15:03,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:15:03,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2411 transitions. [2022-07-19 21:15:03,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 482.2) internal successors, (2411), 5 states have internal predecessors, (2411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:03,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 507.0) internal successors, (3042), 6 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:03,139 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 507.0) internal successors, (3042), 6 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:03,139 INFO L186 Difference]: Start difference. First operand has 488 places, 487 transitions, 1119 flow. Second operand 5 states and 2411 transitions. [2022-07-19 21:15:03,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 488 transitions, 1148 flow [2022-07-19 21:15:03,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 488 transitions, 1093 flow, removed 1 selfloop flow, removed 26 redundant places. [2022-07-19 21:15:03,146 INFO L242 Difference]: Finished difference. Result has 468 places, 487 transitions, 1085 flow [2022-07-19 21:15:03,147 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=1056, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1085, PETRI_PLACES=468, PETRI_TRANSITIONS=487} [2022-07-19 21:15:03,148 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 9 predicate places. [2022-07-19 21:15:03,148 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 487 transitions, 1085 flow [2022-07-19 21:15:03,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 480.6) internal successors, (2403), 5 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:03,149 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:15:03,149 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:15:03,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:15:03,149 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-19 21:15:03,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:15:03,150 INFO L85 PathProgramCache]: Analyzing trace with hash 519425822, now seen corresponding path program 1 times [2022-07-19 21:15:03,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:15:03,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363266723] [2022-07-19 21:15:03,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:15:03,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:15:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:15:03,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:15:03,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:15:03,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363266723] [2022-07-19 21:15:03,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363266723] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:15:03,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:15:03,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:15:03,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137942961] [2022-07-19 21:15:03,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:15:03,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:15:03,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:15:03,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:15:03,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:15:03,190 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 482 out of 507 [2022-07-19 21:15:03,192 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 487 transitions, 1085 flow. Second operand has 3 states, 3 states have (on average 483.3333333333333) internal successors, (1450), 3 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:03,192 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:15:03,192 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 482 of 507 [2022-07-19 21:15:03,192 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:15:03,367 INFO L129 PetriNetUnfolder]: 42/1173 cut-off events. [2022-07-19 21:15:03,368 INFO L130 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-07-19 21:15:03,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 1173 events. 42/1173 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 3310 event pairs, 1 based on Foata normal form. 0/1118 useless extension candidates. Maximal degree in co-relation 1039. Up to 22 conditions per place. [2022-07-19 21:15:03,380 INFO L132 encePairwiseOnDemand]: 504/507 looper letters, 13 selfloop transitions, 2 changer transitions 0/491 dead transitions. [2022-07-19 21:15:03,380 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 491 transitions, 1119 flow [2022-07-19 21:15:03,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:15:03,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:15:03,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1462 transitions. [2022-07-19 21:15:03,387 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9612097304404996 [2022-07-19 21:15:03,387 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1462 transitions. [2022-07-19 21:15:03,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1462 transitions. [2022-07-19 21:15:03,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:15:03,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1462 transitions. [2022-07-19 21:15:03,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 487.3333333333333) internal successors, (1462), 3 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:03,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 507.0) internal successors, (2028), 4 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:03,393 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 507.0) internal successors, (2028), 4 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:03,393 INFO L186 Difference]: Start difference. First operand has 468 places, 487 transitions, 1085 flow. Second operand 3 states and 1462 transitions. [2022-07-19 21:15:03,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 491 transitions, 1119 flow [2022-07-19 21:15:03,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 491 transitions, 1110 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-07-19 21:15:03,401 INFO L242 Difference]: Finished difference. Result has 469 places, 487 transitions, 1082 flow [2022-07-19 21:15:03,402 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=1070, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1082, PETRI_PLACES=469, PETRI_TRANSITIONS=487} [2022-07-19 21:15:03,404 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 10 predicate places. [2022-07-19 21:15:03,404 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 487 transitions, 1082 flow [2022-07-19 21:15:03,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 483.3333333333333) internal successors, (1450), 3 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:03,404 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:15:03,405 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:15:03,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:15:03,405 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-19 21:15:03,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:15:03,406 INFO L85 PathProgramCache]: Analyzing trace with hash 2048381946, now seen corresponding path program 1 times [2022-07-19 21:15:03,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:15:03,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573840504] [2022-07-19 21:15:03,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:15:03,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:15:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:15:03,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:15:03,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:15:03,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573840504] [2022-07-19 21:15:03,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573840504] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:15:03,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:15:03,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-19 21:15:03,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041654853] [2022-07-19 21:15:03,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:15:03,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-19 21:15:03,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:15:03,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-19 21:15:03,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-07-19 21:15:03,691 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 507 [2022-07-19 21:15:03,694 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 487 transitions, 1082 flow. Second operand has 19 states, 19 states have (on average 337.36842105263156) internal successors, (6410), 19 states have internal predecessors, (6410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:03,694 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:15:03,694 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 507 [2022-07-19 21:15:03,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:15:07,626 INFO L129 PetriNetUnfolder]: 6024/22966 cut-off events. [2022-07-19 21:15:07,626 INFO L130 PetriNetUnfolder]: For 413/413 co-relation queries the response was YES. [2022-07-19 21:15:07,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34725 conditions, 22966 events. 6024/22966 cut-off events. For 413/413 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 219912 event pairs, 1191 based on Foata normal form. 0/21981 useless extension candidates. Maximal degree in co-relation 15339. Up to 5330 conditions per place. [2022-07-19 21:15:07,712 INFO L132 encePairwiseOnDemand]: 475/507 looper letters, 347 selfloop transitions, 44 changer transitions 0/721 dead transitions. [2022-07-19 21:15:07,713 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 721 transitions, 2341 flow [2022-07-19 21:15:07,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:15:07,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:15:07,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 7761 transitions. [2022-07-19 21:15:07,725 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6958041958041958 [2022-07-19 21:15:07,725 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 7761 transitions. [2022-07-19 21:15:07,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 7761 transitions. [2022-07-19 21:15:07,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:15:07,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 7761 transitions. [2022-07-19 21:15:07,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 352.77272727272725) internal successors, (7761), 22 states have internal predecessors, (7761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:07,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 507.0) internal successors, (11661), 23 states have internal predecessors, (11661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:07,752 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 507.0) internal successors, (11661), 23 states have internal predecessors, (11661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:07,752 INFO L186 Difference]: Start difference. First operand has 469 places, 487 transitions, 1082 flow. Second operand 22 states and 7761 transitions. [2022-07-19 21:15:07,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 721 transitions, 2341 flow [2022-07-19 21:15:07,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 721 transitions, 2339 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:15:07,763 INFO L242 Difference]: Finished difference. Result has 497 places, 519 transitions, 1320 flow [2022-07-19 21:15:07,764 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1320, PETRI_PLACES=497, PETRI_TRANSITIONS=519} [2022-07-19 21:15:07,764 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 38 predicate places. [2022-07-19 21:15:07,764 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 519 transitions, 1320 flow [2022-07-19 21:15:07,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 337.36842105263156) internal successors, (6410), 19 states have internal predecessors, (6410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:07,766 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:15:07,766 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:15:07,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:15:07,766 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-19 21:15:07,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:15:07,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1009639929, now seen corresponding path program 1 times [2022-07-19 21:15:07,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:15:07,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140442887] [2022-07-19 21:15:07,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:15:07,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:15:07,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:15:07,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:15:07,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:15:07,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140442887] [2022-07-19 21:15:07,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140442887] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:15:07,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:15:07,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:15:07,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425735526] [2022-07-19 21:15:07,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:15:07,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:15:07,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:15:07,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:15:07,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:15:07,877 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 507 [2022-07-19 21:15:07,878 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 519 transitions, 1320 flow. Second operand has 5 states, 5 states have (on average 437.0) internal successors, (2185), 5 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:07,878 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:15:07,878 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 507 [2022-07-19 21:15:07,879 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:15:08,777 INFO L129 PetriNetUnfolder]: 300/5891 cut-off events. [2022-07-19 21:15:08,777 INFO L130 PetriNetUnfolder]: For 205/218 co-relation queries the response was YES. [2022-07-19 21:15:08,812 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7235 conditions, 5891 events. 300/5891 cut-off events. For 205/218 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 45666 event pairs, 1 based on Foata normal form. 5/5608 useless extension candidates. Maximal degree in co-relation 7036. Up to 366 conditions per place. [2022-07-19 21:15:08,825 INFO L132 encePairwiseOnDemand]: 484/507 looper letters, 76 selfloop transitions, 22 changer transitions 0/543 dead transitions. [2022-07-19 21:15:08,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 543 transitions, 1569 flow [2022-07-19 21:15:08,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:15:08,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:15:08,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2676 transitions. [2022-07-19 21:15:08,829 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8796844181459567 [2022-07-19 21:15:08,830 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2676 transitions. [2022-07-19 21:15:08,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2676 transitions. [2022-07-19 21:15:08,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:15:08,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2676 transitions. [2022-07-19 21:15:08,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 446.0) internal successors, (2676), 6 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:08,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 507.0) internal successors, (3549), 7 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:08,838 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 507.0) internal successors, (3549), 7 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:08,838 INFO L186 Difference]: Start difference. First operand has 497 places, 519 transitions, 1320 flow. Second operand 6 states and 2676 transitions. [2022-07-19 21:15:08,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 543 transitions, 1569 flow [2022-07-19 21:15:08,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 543 transitions, 1547 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-07-19 21:15:08,847 INFO L242 Difference]: Finished difference. Result has 495 places, 536 transitions, 1448 flow [2022-07-19 21:15:08,848 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1448, PETRI_PLACES=495, PETRI_TRANSITIONS=536} [2022-07-19 21:15:08,848 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 36 predicate places. [2022-07-19 21:15:08,849 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 536 transitions, 1448 flow [2022-07-19 21:15:08,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 437.0) internal successors, (2185), 5 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:08,849 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:15:08,850 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:15:08,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:15:08,850 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-19 21:15:08,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:15:08,850 INFO L85 PathProgramCache]: Analyzing trace with hash -642914649, now seen corresponding path program 1 times [2022-07-19 21:15:08,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:15:08,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839349750] [2022-07-19 21:15:08,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:15:08,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:15:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:15:09,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:15:09,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:15:09,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839349750] [2022-07-19 21:15:09,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839349750] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:15:09,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:15:09,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-19 21:15:09,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131990412] [2022-07-19 21:15:09,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:15:09,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-19 21:15:09,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:15:09,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-19 21:15:09,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2022-07-19 21:15:09,417 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 507 [2022-07-19 21:15:09,421 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 536 transitions, 1448 flow. Second operand has 22 states, 22 states have (on average 300.5) internal successors, (6611), 22 states have internal predecessors, (6611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:09,421 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:15:09,421 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 507 [2022-07-19 21:15:09,421 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:15:19,169 INFO L129 PetriNetUnfolder]: 12936/44496 cut-off events. [2022-07-19 21:15:19,169 INFO L130 PetriNetUnfolder]: For 5167/5180 co-relation queries the response was YES. [2022-07-19 21:15:19,349 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75564 conditions, 44496 events. 12936/44496 cut-off events. For 5167/5180 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 475009 event pairs, 2428 based on Foata normal form. 56/42841 useless extension candidates. Maximal degree in co-relation 39074. Up to 9111 conditions per place. [2022-07-19 21:15:19,459 INFO L132 encePairwiseOnDemand]: 436/507 looper letters, 699 selfloop transitions, 171 changer transitions 0/1163 dead transitions. [2022-07-19 21:15:19,460 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 1163 transitions, 4756 flow [2022-07-19 21:15:19,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-19 21:15:19,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-19 21:15:19,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 11877 transitions. [2022-07-19 21:15:19,475 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6331360946745562 [2022-07-19 21:15:19,475 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 11877 transitions. [2022-07-19 21:15:19,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 11877 transitions. [2022-07-19 21:15:19,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:15:19,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 11877 transitions. [2022-07-19 21:15:19,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 321.0) internal successors, (11877), 37 states have internal predecessors, (11877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:19,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 507.0) internal successors, (19266), 38 states have internal predecessors, (19266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:19,522 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 507.0) internal successors, (19266), 38 states have internal predecessors, (19266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:19,522 INFO L186 Difference]: Start difference. First operand has 495 places, 536 transitions, 1448 flow. Second operand 37 states and 11877 transitions. [2022-07-19 21:15:19,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 1163 transitions, 4756 flow [2022-07-19 21:15:19,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 1163 transitions, 4737 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-19 21:15:19,552 INFO L242 Difference]: Finished difference. Result has 550 places, 649 transitions, 2562 flow [2022-07-19 21:15:19,553 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=1436, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2562, PETRI_PLACES=550, PETRI_TRANSITIONS=649} [2022-07-19 21:15:19,553 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 91 predicate places. [2022-07-19 21:15:19,553 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 649 transitions, 2562 flow [2022-07-19 21:15:19,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 300.5) internal successors, (6611), 22 states have internal predecessors, (6611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:19,555 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:15:19,555 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:15:19,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:15:19,556 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-19 21:15:19,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:15:19,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1647572475, now seen corresponding path program 2 times [2022-07-19 21:15:19,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:15:19,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726302347] [2022-07-19 21:15:19,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:15:19,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:15:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:15:20,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:15:20,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:15:20,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726302347] [2022-07-19 21:15:20,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726302347] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:15:20,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:15:20,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-07-19 21:15:20,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33131915] [2022-07-19 21:15:20,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:15:20,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-19 21:15:20,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:15:20,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-19 21:15:20,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1197, Unknown=0, NotChecked=0, Total=1332 [2022-07-19 21:15:20,870 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 507 [2022-07-19 21:15:20,874 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 649 transitions, 2562 flow. Second operand has 37 states, 37 states have (on average 282.86486486486484) internal successors, (10466), 37 states have internal predecessors, (10466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:20,874 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:15:20,874 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 507 [2022-07-19 21:15:20,875 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:15:51,969 INFO L129 PetriNetUnfolder]: 20479/68495 cut-off events. [2022-07-19 21:15:51,969 INFO L130 PetriNetUnfolder]: For 140431/140483 co-relation queries the response was YES. [2022-07-19 21:15:52,612 INFO L84 FinitePrefix]: Finished finitePrefix Result has 155177 conditions, 68495 events. 20479/68495 cut-off events. For 140431/140483 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 748632 event pairs, 3393 based on Foata normal form. 66/66091 useless extension candidates. Maximal degree in co-relation 155073. Up to 17304 conditions per place. [2022-07-19 21:15:52,798 INFO L132 encePairwiseOnDemand]: 434/507 looper letters, 1166 selfloop transitions, 422 changer transitions 0/1862 dead transitions. [2022-07-19 21:15:52,798 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 660 places, 1862 transitions, 10707 flow [2022-07-19 21:15:52,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-07-19 21:15:52,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2022-07-19 21:15:52,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 32635 transitions. [2022-07-19 21:15:52,824 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5798994260532722 [2022-07-19 21:15:52,825 INFO L72 ComplementDD]: Start complementDD. Operand 111 states and 32635 transitions. [2022-07-19 21:15:52,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 32635 transitions. [2022-07-19 21:15:52,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:15:52,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 111 states and 32635 transitions. [2022-07-19 21:15:52,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 112 states, 111 states have (on average 294.009009009009) internal successors, (32635), 111 states have internal predecessors, (32635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:52,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 112 states, 112 states have (on average 507.0) internal successors, (56784), 112 states have internal predecessors, (56784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:52,932 INFO L81 ComplementDD]: Finished complementDD. Result has 112 states, 112 states have (on average 507.0) internal successors, (56784), 112 states have internal predecessors, (56784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:52,932 INFO L186 Difference]: Start difference. First operand has 550 places, 649 transitions, 2562 flow. Second operand 111 states and 32635 transitions. [2022-07-19 21:15:52,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 660 places, 1862 transitions, 10707 flow [2022-07-19 21:15:53,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 652 places, 1862 transitions, 10542 flow, removed 11 selfloop flow, removed 8 redundant places. [2022-07-19 21:15:53,182 INFO L242 Difference]: Finished difference. Result has 682 places, 1030 transitions, 6422 flow [2022-07-19 21:15:53,183 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=2507, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=111, PETRI_FLOW=6422, PETRI_PLACES=682, PETRI_TRANSITIONS=1030} [2022-07-19 21:15:53,183 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 223 predicate places. [2022-07-19 21:15:53,184 INFO L495 AbstractCegarLoop]: Abstraction has has 682 places, 1030 transitions, 6422 flow [2022-07-19 21:15:53,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 282.86486486486484) internal successors, (10466), 37 states have internal predecessors, (10466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:53,186 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:15:53,186 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:15:53,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:15:53,186 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-19 21:15:53,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:15:53,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1411939023, now seen corresponding path program 3 times [2022-07-19 21:15:53,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:15:53,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181194937] [2022-07-19 21:15:53,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:15:53,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:15:53,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:15:54,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:15:54,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:15:54,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181194937] [2022-07-19 21:15:54,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181194937] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:15:54,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:15:54,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-07-19 21:15:54,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210656598] [2022-07-19 21:15:54,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:15:54,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-19 21:15:54,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:15:54,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-19 21:15:54,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1416, Unknown=0, NotChecked=0, Total=1560 [2022-07-19 21:15:54,753 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 507 [2022-07-19 21:15:54,757 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 682 places, 1030 transitions, 6422 flow. Second operand has 40 states, 40 states have (on average 268.875) internal successors, (10755), 40 states have internal predecessors, (10755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:54,758 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:15:54,758 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 507 [2022-07-19 21:15:54,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:16:43,165 INFO L129 PetriNetUnfolder]: 35748/110684 cut-off events. [2022-07-19 21:16:43,165 INFO L130 PetriNetUnfolder]: For 426750/426980 co-relation queries the response was YES. [2022-07-19 21:16:45,272 INFO L84 FinitePrefix]: Finished finitePrefix Result has 303167 conditions, 110684 events. 35748/110684 cut-off events. For 426750/426980 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 1243022 event pairs, 7679 based on Foata normal form. 113/106534 useless extension candidates. Maximal degree in co-relation 303030. Up to 28489 conditions per place.