./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 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-divine/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-?-791161d [2022-07-22 21:29:56,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:29:56,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:29:56,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:29:56,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:29:56,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:29:56,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:29:56,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:29:56,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:29:56,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:29:56,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:29:56,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:29:56,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:29:56,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:29:56,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:29:56,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:29:56,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:29:56,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:29:56,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:29:56,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:29:56,833 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:29:56,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:29:56,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:29:56,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:29:56,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:29:56,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:29:56,838 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:29:56,839 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:29:56,839 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:29:56,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:29:56,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:29:56,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:29:56,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:29:56,841 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:29:56,842 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:29:56,843 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:29:56,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:29:56,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:29:56,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:29:56,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:29:56,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:29:56,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:29:56,847 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:29:56,861 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:29:56,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:29:56,862 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:29:56,862 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:29:56,863 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:29:56,863 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:29:56,864 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:29:56,864 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:29:56,864 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:29:56,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:29:56,864 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:29:56,865 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:29:56,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:29:56,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:29:56,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:29:56,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:29:56,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:29:56,866 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:29:56,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:29:56,866 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:29:56,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:29:56,866 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:29:56,867 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:29:56,867 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:29:56,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:29:56,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:29:56,867 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:29:56,867 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:29:56,868 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:29:56,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:29:56,868 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:29:56,868 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:29:56,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:29:56,868 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32482febe38d61a93fd0705f3ad97c9c1ccc991b1238f75e4d1dd99bfb01c35e [2022-07-22 21:29:57,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:29:57,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:29:57,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:29:57,085 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:29:57,086 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:29:57,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i [2022-07-22 21:29:57,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba73f37c3/5a57999a8321451db1ed30d069a2ca25/FLAGb5e9310bf [2022-07-22 21:29:57,566 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:29:57,566 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i [2022-07-22 21:29:57,579 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba73f37c3/5a57999a8321451db1ed30d069a2ca25/FLAGb5e9310bf [2022-07-22 21:29:57,593 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba73f37c3/5a57999a8321451db1ed30d069a2ca25 [2022-07-22 21:29:57,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:29:57,596 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:29:57,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:29:57,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:29:57,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:29:57,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:29:57" (1/1) ... [2022-07-22 21:29:57,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10dd13f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:57, skipping insertion in model container [2022-07-22 21:29:57,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:29:57" (1/1) ... [2022-07-22 21:29:57,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:29:57,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:29:57,814 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-22 21:29:58,026 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] [2022-07-22 21:29:58,032 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] [2022-07-22 21:29:58,042 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] [2022-07-22 21:29:58,043 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] [2022-07-22 21:29:58,053 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] [2022-07-22 21:29:58,054 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] [2022-07-22 21:29:58,068 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] [2022-07-22 21:29:58,069 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] [2022-07-22 21:29:58,071 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] [2022-07-22 21:29:58,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:29:58,076 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:29:58,092 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-22 21:29:58,116 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] [2022-07-22 21:29:58,122 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] [2022-07-22 21:29:58,125 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] [2022-07-22 21:29:58,127 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] [2022-07-22 21:29:58,129 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] [2022-07-22 21:29:58,129 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] [2022-07-22 21:29:58,132 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] [2022-07-22 21:29:58,132 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] [2022-07-22 21:29:58,133 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] [2022-07-22 21:29:58,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:29:58,184 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:29:58,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:58 WrapperNode [2022-07-22 21:29:58,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:29:58,189 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:29:58,190 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:29:58,190 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:29:58,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:58" (1/1) ... [2022-07-22 21:29:58,218 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:58" (1/1) ... [2022-07-22 21:29:58,247 INFO L137 Inliner]: procedures = 278, calls = 103, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 416 [2022-07-22 21:29:58,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:29:58,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:29:58,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:29:58,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:29:58,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:58" (1/1) ... [2022-07-22 21:29:58,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:58" (1/1) ... [2022-07-22 21:29:58,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:58" (1/1) ... [2022-07-22 21:29:58,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:58" (1/1) ... [2022-07-22 21:29:58,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:58" (1/1) ... [2022-07-22 21:29:58,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:58" (1/1) ... [2022-07-22 21:29:58,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:58" (1/1) ... [2022-07-22 21:29:58,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:29:58,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:29:58,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:29:58,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:29:58,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:58" (1/1) ... [2022-07-22 21:29:58,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:29:58,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:29:58,343 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 21:29:58,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 21:29:58,385 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-07-22 21:29:58,385 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-07-22 21:29:58,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:29:58,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 21:29:58,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:29:58,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:29:58,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:29:58,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 21:29:58,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:29:58,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 21:29:58,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:29:58,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:29:58,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:29:58,386 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:29:58,599 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:29:58,600 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:29:59,181 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:29:59,191 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:29:59,191 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-22 21:29:59,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:29:59 BoogieIcfgContainer [2022-07-22 21:29:59,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:29:59,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:29:59,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:29:59,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:29:59,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:29:57" (1/3) ... [2022-07-22 21:29:59,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d4a02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:29:59, skipping insertion in model container [2022-07-22 21:29:59,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:58" (2/3) ... [2022-07-22 21:29:59,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d4a02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:29:59, skipping insertion in model container [2022-07-22 21:29:59,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:29:59" (3/3) ... [2022-07-22 21:29:59,199 INFO L111 eAbstractionObserver]: Analyzing ICFG divinefifo-bug_1w1r.i [2022-07-22 21:29:59,202 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:29:59,208 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:29:59,209 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-07-22 21:29:59,209 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:29:59,287 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-22 21:29:59,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 478 places, 507 transitions, 1022 flow [2022-07-22 21:29:59,450 INFO L129 PetriNetUnfolder]: 33/506 cut-off events. [2022-07-22 21:29:59,450 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-22 21:29:59,460 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. [2022-07-22 21:29:59,460 INFO L82 GeneralOperation]: Start removeDead. Operand has 478 places, 507 transitions, 1022 flow [2022-07-22 21:29:59,466 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 459 places, 487 transitions, 980 flow [2022-07-22 21:29:59,477 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:29:59,483 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@2a44a03e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3d9b8952 [2022-07-22 21:29:59,484 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-07-22 21:29:59,492 INFO L129 PetriNetUnfolder]: 2/69 cut-off events. [2022-07-22 21:29:59,492 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:29:59,492 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:29:59,493 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] [2022-07-22 21:29:59,493 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)] === [2022-07-22 21:29:59,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:29:59,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1954338316, now seen corresponding path program 1 times [2022-07-22 21:29:59,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:29:59,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051054534] [2022-07-22 21:29:59,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:29:59,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:29:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:29:59,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:29:59,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:29:59,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051054534] [2022-07-22 21:29:59,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051054534] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:29:59,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:29:59,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 21:29:59,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248295956] [2022-07-22 21:29:59,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:29:59,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 21:29:59,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:29:59,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 21:29:59,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-22 21:29:59,890 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 507 [2022-07-22 21:29:59,899 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) [2022-07-22 21:29:59,899 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:29:59,899 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 507 [2022-07-22 21:29:59,900 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:01,409 INFO L129 PetriNetUnfolder]: 1991/7285 cut-off events. [2022-07-22 21:30:01,410 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-22 21:30:01,423 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. [2022-07-22 21:30:01,449 INFO L132 encePairwiseOnDemand]: 468/507 looper letters, 166 selfloop transitions, 24 changer transitions 0/487 dead transitions. [2022-07-22 21:30:01,450 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 487 transitions, 1360 flow [2022-07-22 21:30:01,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 21:30:01,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-22 21:30:01,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4602 transitions. [2022-07-22 21:30:01,471 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6483516483516484 [2022-07-22 21:30:01,472 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4602 transitions. [2022-07-22 21:30:01,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4602 transitions. [2022-07-22 21:30:01,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:01,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4602 transitions. [2022-07-22 21:30:01,492 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) [2022-07-22 21:30:01,508 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) [2022-07-22 21:30:01,511 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) [2022-07-22 21:30:01,513 INFO L186 Difference]: Start difference. First operand has 459 places, 487 transitions, 980 flow. Second operand 14 states and 4602 transitions. [2022-07-22 21:30:01,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 487 transitions, 1360 flow [2022-07-22 21:30:01,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 487 transitions, 1356 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:30:01,535 INFO L242 Difference]: Finished difference. Result has 470 places, 472 transitions, 994 flow [2022-07-22 21:30:01,537 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} [2022-07-22 21:30:01,540 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 11 predicate places. [2022-07-22 21:30:01,541 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 472 transitions, 994 flow [2022-07-22 21:30:01,544 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) [2022-07-22 21:30:01,544 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:01,546 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:30:01,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:30:01,547 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)] === [2022-07-22 21:30:01,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:01,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1408163568, now seen corresponding path program 1 times [2022-07-22 21:30:01,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:01,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946788573] [2022-07-22 21:30:01,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:01,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:02,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:02,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:02,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946788573] [2022-07-22 21:30:02,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946788573] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:02,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:02,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-22 21:30:02,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263320294] [2022-07-22 21:30:02,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:02,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 21:30:02,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:02,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 21:30:02,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2022-07-22 21:30:02,105 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 507 [2022-07-22 21:30:02,110 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) [2022-07-22 21:30:02,110 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:02,110 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 507 [2022-07-22 21:30:02,110 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:06,065 INFO L129 PetriNetUnfolder]: 4756/14876 cut-off events. [2022-07-22 21:30:06,066 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-07-22 21:30:06,091 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. [2022-07-22 21:30:06,140 INFO L132 encePairwiseOnDemand]: 462/507 looper letters, 387 selfloop transitions, 54 changer transitions 0/694 dead transitions. [2022-07-22 21:30:06,141 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 694 transitions, 2341 flow [2022-07-22 21:30:06,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-22 21:30:06,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-22 21:30:06,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 9018 transitions. [2022-07-22 21:30:06,157 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5558431952662722 [2022-07-22 21:30:06,157 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 9018 transitions. [2022-07-22 21:30:06,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 9018 transitions. [2022-07-22 21:30:06,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:06,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 9018 transitions. [2022-07-22 21:30:06,177 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) [2022-07-22 21:30:06,197 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) [2022-07-22 21:30:06,203 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) [2022-07-22 21:30:06,203 INFO L186 Difference]: Start difference. First operand has 470 places, 472 transitions, 994 flow. Second operand 32 states and 9018 transitions. [2022-07-22 21:30:06,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 694 transitions, 2341 flow [2022-07-22 21:30:06,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 694 transitions, 2273 flow, removed 0 selfloop flow, removed 13 redundant places. [2022-07-22 21:30:06,227 INFO L242 Difference]: Finished difference. Result has 488 places, 487 transitions, 1119 flow [2022-07-22 21:30:06,228 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} [2022-07-22 21:30:06,229 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 29 predicate places. [2022-07-22 21:30:06,229 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 487 transitions, 1119 flow [2022-07-22 21:30:06,231 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) [2022-07-22 21:30:06,231 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:06,232 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] [2022-07-22 21:30:06,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:30:06,232 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)] === [2022-07-22 21:30:06,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:06,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1612565280, now seen corresponding path program 1 times [2022-07-22 21:30:06,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:06,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711382982] [2022-07-22 21:30:06,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:06,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:06,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:06,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:06,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711382982] [2022-07-22 21:30:06,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711382982] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:06,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:06,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:30:06,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706614067] [2022-07-22 21:30:06,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:06,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:30:06,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:06,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:30:06,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:30:06,317 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 479 out of 507 [2022-07-22 21:30:06,319 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) [2022-07-22 21:30:06,320 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:06,320 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 479 of 507 [2022-07-22 21:30:06,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:06,449 INFO L129 PetriNetUnfolder]: 31/902 cut-off events. [2022-07-22 21:30:06,449 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-07-22 21:30:06,456 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. [2022-07-22 21:30:06,459 INFO L132 encePairwiseOnDemand]: 499/507 looper letters, 8 selfloop transitions, 7 changer transitions 0/488 dead transitions. [2022-07-22 21:30:06,460 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 488 transitions, 1148 flow [2022-07-22 21:30:06,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:30:06,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:30:06,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2411 transitions. [2022-07-22 21:30:06,465 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9510848126232742 [2022-07-22 21:30:06,465 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2411 transitions. [2022-07-22 21:30:06,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2411 transitions. [2022-07-22 21:30:06,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:06,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2411 transitions. [2022-07-22 21:30:06,470 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) [2022-07-22 21:30:06,473 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) [2022-07-22 21:30:06,474 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) [2022-07-22 21:30:06,474 INFO L186 Difference]: Start difference. First operand has 488 places, 487 transitions, 1119 flow. Second operand 5 states and 2411 transitions. [2022-07-22 21:30:06,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 488 transitions, 1148 flow [2022-07-22 21:30:06,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 488 transitions, 1093 flow, removed 1 selfloop flow, removed 26 redundant places. [2022-07-22 21:30:06,483 INFO L242 Difference]: Finished difference. Result has 468 places, 487 transitions, 1085 flow [2022-07-22 21:30:06,483 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} [2022-07-22 21:30:06,484 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 9 predicate places. [2022-07-22 21:30:06,484 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 487 transitions, 1085 flow [2022-07-22 21:30:06,486 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) [2022-07-22 21:30:06,486 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:06,486 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] [2022-07-22 21:30:06,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:30:06,486 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)] === [2022-07-22 21:30:06,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:06,487 INFO L85 PathProgramCache]: Analyzing trace with hash 519425822, now seen corresponding path program 1 times [2022-07-22 21:30:06,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:06,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547438609] [2022-07-22 21:30:06,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:06,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:06,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:06,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:06,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547438609] [2022-07-22 21:30:06,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547438609] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:06,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:06,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:30:06,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20841339] [2022-07-22 21:30:06,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:06,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:30:06,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:06,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:30:06,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:30:06,532 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 482 out of 507 [2022-07-22 21:30:06,533 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) [2022-07-22 21:30:06,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:06,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 482 of 507 [2022-07-22 21:30:06,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:06,743 INFO L129 PetriNetUnfolder]: 42/1173 cut-off events. [2022-07-22 21:30:06,744 INFO L130 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-07-22 21:30:06,750 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. [2022-07-22 21:30:06,753 INFO L132 encePairwiseOnDemand]: 504/507 looper letters, 13 selfloop transitions, 2 changer transitions 0/491 dead transitions. [2022-07-22 21:30:06,753 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 491 transitions, 1119 flow [2022-07-22 21:30:06,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:30:06,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:30:06,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1462 transitions. [2022-07-22 21:30:06,757 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9612097304404996 [2022-07-22 21:30:06,757 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1462 transitions. [2022-07-22 21:30:06,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1462 transitions. [2022-07-22 21:30:06,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:06,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1462 transitions. [2022-07-22 21:30:06,760 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) [2022-07-22 21:30:06,761 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) [2022-07-22 21:30:06,762 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) [2022-07-22 21:30:06,762 INFO L186 Difference]: Start difference. First operand has 468 places, 487 transitions, 1085 flow. Second operand 3 states and 1462 transitions. [2022-07-22 21:30:06,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 491 transitions, 1119 flow [2022-07-22 21:30:06,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 491 transitions, 1110 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-07-22 21:30:06,769 INFO L242 Difference]: Finished difference. Result has 469 places, 487 transitions, 1082 flow [2022-07-22 21:30:06,769 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} [2022-07-22 21:30:06,770 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 10 predicate places. [2022-07-22 21:30:06,770 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 487 transitions, 1082 flow [2022-07-22 21:30:06,771 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) [2022-07-22 21:30:06,771 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:06,771 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] [2022-07-22 21:30:06,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:30:06,771 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)] === [2022-07-22 21:30:06,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:06,772 INFO L85 PathProgramCache]: Analyzing trace with hash 2048381946, now seen corresponding path program 1 times [2022-07-22 21:30:06,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:06,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286060516] [2022-07-22 21:30:06,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:06,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:07,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:07,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:07,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286060516] [2022-07-22 21:30:07,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286060516] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:07,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:07,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:30:07,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584752443] [2022-07-22 21:30:07,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:07,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:30:07,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:07,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:30:07,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:30:07,038 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 507 [2022-07-22 21:30:07,042 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) [2022-07-22 21:30:07,043 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:07,043 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 507 [2022-07-22 21:30:07,043 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:11,232 INFO L129 PetriNetUnfolder]: 6024/22966 cut-off events. [2022-07-22 21:30:11,232 INFO L130 PetriNetUnfolder]: For 413/413 co-relation queries the response was YES. [2022-07-22 21:30:11,283 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. [2022-07-22 21:30:11,336 INFO L132 encePairwiseOnDemand]: 475/507 looper letters, 347 selfloop transitions, 44 changer transitions 0/721 dead transitions. [2022-07-22 21:30:11,337 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 721 transitions, 2341 flow [2022-07-22 21:30:11,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-22 21:30:11,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-22 21:30:11,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 7761 transitions. [2022-07-22 21:30:11,348 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6958041958041958 [2022-07-22 21:30:11,349 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 7761 transitions. [2022-07-22 21:30:11,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 7761 transitions. [2022-07-22 21:30:11,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:11,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 7761 transitions. [2022-07-22 21:30:11,361 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) [2022-07-22 21:30:11,373 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) [2022-07-22 21:30:11,374 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) [2022-07-22 21:30:11,374 INFO L186 Difference]: Start difference. First operand has 469 places, 487 transitions, 1082 flow. Second operand 22 states and 7761 transitions. [2022-07-22 21:30:11,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 721 transitions, 2341 flow [2022-07-22 21:30:11,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 721 transitions, 2339 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:30:11,387 INFO L242 Difference]: Finished difference. Result has 497 places, 519 transitions, 1320 flow [2022-07-22 21:30:11,388 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} [2022-07-22 21:30:11,390 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 38 predicate places. [2022-07-22 21:30:11,390 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 519 transitions, 1320 flow [2022-07-22 21:30:11,392 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) [2022-07-22 21:30:11,392 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:11,392 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] [2022-07-22 21:30:11,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:30:11,392 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)] === [2022-07-22 21:30:11,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:11,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1009639929, now seen corresponding path program 1 times [2022-07-22 21:30:11,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:11,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155459128] [2022-07-22 21:30:11,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:11,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:11,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:11,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:11,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155459128] [2022-07-22 21:30:11,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155459128] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:11,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:11,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:30:11,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377955848] [2022-07-22 21:30:11,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:11,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:30:11,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:11,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:30:11,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:30:11,513 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 507 [2022-07-22 21:30:11,515 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) [2022-07-22 21:30:11,515 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:11,515 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 507 [2022-07-22 21:30:11,515 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:12,302 INFO L129 PetriNetUnfolder]: 300/5891 cut-off events. [2022-07-22 21:30:12,302 INFO L130 PetriNetUnfolder]: For 205/218 co-relation queries the response was YES. [2022-07-22 21:30:12,343 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. [2022-07-22 21:30:12,355 INFO L132 encePairwiseOnDemand]: 484/507 looper letters, 76 selfloop transitions, 22 changer transitions 0/543 dead transitions. [2022-07-22 21:30:12,356 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 543 transitions, 1569 flow [2022-07-22 21:30:12,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 21:30:12,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-22 21:30:12,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2676 transitions. [2022-07-22 21:30:12,360 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8796844181459567 [2022-07-22 21:30:12,360 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2676 transitions. [2022-07-22 21:30:12,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2676 transitions. [2022-07-22 21:30:12,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:12,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2676 transitions. [2022-07-22 21:30:12,364 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) [2022-07-22 21:30:12,367 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) [2022-07-22 21:30:12,368 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) [2022-07-22 21:30:12,368 INFO L186 Difference]: Start difference. First operand has 497 places, 519 transitions, 1320 flow. Second operand 6 states and 2676 transitions. [2022-07-22 21:30:12,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 543 transitions, 1569 flow [2022-07-22 21:30:12,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 543 transitions, 1547 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-07-22 21:30:12,377 INFO L242 Difference]: Finished difference. Result has 495 places, 536 transitions, 1448 flow [2022-07-22 21:30:12,378 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} [2022-07-22 21:30:12,378 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 36 predicate places. [2022-07-22 21:30:12,378 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 536 transitions, 1448 flow [2022-07-22 21:30:12,379 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) [2022-07-22 21:30:12,379 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:12,379 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] [2022-07-22 21:30:12,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:30:12,380 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)] === [2022-07-22 21:30:12,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:12,380 INFO L85 PathProgramCache]: Analyzing trace with hash -642914649, now seen corresponding path program 1 times [2022-07-22 21:30:12,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:12,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287897887] [2022-07-22 21:30:12,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:12,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:12,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:12,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:12,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287897887] [2022-07-22 21:30:12,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287897887] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:12,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:12,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-22 21:30:12,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340620348] [2022-07-22 21:30:12,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:12,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 21:30:12,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:12,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 21:30:12,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2022-07-22 21:30:12,980 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 507 [2022-07-22 21:30:12,984 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) [2022-07-22 21:30:12,984 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:12,984 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 507 [2022-07-22 21:30:12,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:22,979 INFO L129 PetriNetUnfolder]: 12936/44496 cut-off events. [2022-07-22 21:30:22,979 INFO L130 PetriNetUnfolder]: For 5167/5180 co-relation queries the response was YES. [2022-07-22 21:30:23,151 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. [2022-07-22 21:30:23,276 INFO L132 encePairwiseOnDemand]: 436/507 looper letters, 699 selfloop transitions, 171 changer transitions 0/1163 dead transitions. [2022-07-22 21:30:23,277 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 1163 transitions, 4756 flow [2022-07-22 21:30:23,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-22 21:30:23,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-22 21:30:23,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 11877 transitions. [2022-07-22 21:30:23,292 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6331360946745562 [2022-07-22 21:30:23,292 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 11877 transitions. [2022-07-22 21:30:23,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 11877 transitions. [2022-07-22 21:30:23,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:23,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 11877 transitions. [2022-07-22 21:30:23,311 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) [2022-07-22 21:30:23,333 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) [2022-07-22 21:30:23,336 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) [2022-07-22 21:30:23,337 INFO L186 Difference]: Start difference. First operand has 495 places, 536 transitions, 1448 flow. Second operand 37 states and 11877 transitions. [2022-07-22 21:30:23,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 1163 transitions, 4756 flow [2022-07-22 21:30:23,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 1163 transitions, 4737 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-22 21:30:23,366 INFO L242 Difference]: Finished difference. Result has 550 places, 649 transitions, 2562 flow [2022-07-22 21:30:23,367 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} [2022-07-22 21:30:23,367 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 91 predicate places. [2022-07-22 21:30:23,367 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 649 transitions, 2562 flow [2022-07-22 21:30:23,369 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) [2022-07-22 21:30:23,369 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:23,369 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] [2022-07-22 21:30:23,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:30:23,370 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)] === [2022-07-22 21:30:23,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:23,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1647572475, now seen corresponding path program 2 times [2022-07-22 21:30:23,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:23,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798296059] [2022-07-22 21:30:23,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:23,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:24,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:24,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:24,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798296059] [2022-07-22 21:30:24,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798296059] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:24,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:24,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-07-22 21:30:24,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130899231] [2022-07-22 21:30:24,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:24,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-22 21:30:24,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:24,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-22 21:30:24,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1197, Unknown=0, NotChecked=0, Total=1332 [2022-07-22 21:30:24,615 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 507 [2022-07-22 21:30:24,620 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) [2022-07-22 21:30:24,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:24,621 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 507 [2022-07-22 21:30:24,621 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:54,959 INFO L129 PetriNetUnfolder]: 20479/68495 cut-off events. [2022-07-22 21:30:54,959 INFO L130 PetriNetUnfolder]: For 140431/140483 co-relation queries the response was YES. [2022-07-22 21:30:55,568 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. [2022-07-22 21:30:55,786 INFO L132 encePairwiseOnDemand]: 434/507 looper letters, 1166 selfloop transitions, 422 changer transitions 0/1862 dead transitions. [2022-07-22 21:30:55,786 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 660 places, 1862 transitions, 10707 flow [2022-07-22 21:30:55,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-07-22 21:30:55,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2022-07-22 21:30:55,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 32635 transitions. [2022-07-22 21:30:55,806 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5798994260532722 [2022-07-22 21:30:55,806 INFO L72 ComplementDD]: Start complementDD. Operand 111 states and 32635 transitions. [2022-07-22 21:30:55,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 32635 transitions. [2022-07-22 21:30:55,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:55,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 111 states and 32635 transitions. [2022-07-22 21:30:55,846 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) [2022-07-22 21:30:55,887 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) [2022-07-22 21:30:55,901 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) [2022-07-22 21:30:55,901 INFO L186 Difference]: Start difference. First operand has 550 places, 649 transitions, 2562 flow. Second operand 111 states and 32635 transitions. [2022-07-22 21:30:55,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 660 places, 1862 transitions, 10707 flow [2022-07-22 21:30:56,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 652 places, 1862 transitions, 10542 flow, removed 11 selfloop flow, removed 8 redundant places. [2022-07-22 21:30:56,380 INFO L242 Difference]: Finished difference. Result has 682 places, 1030 transitions, 6422 flow [2022-07-22 21:30:56,381 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} [2022-07-22 21:30:56,381 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 223 predicate places. [2022-07-22 21:30:56,382 INFO L495 AbstractCegarLoop]: Abstraction has has 682 places, 1030 transitions, 6422 flow [2022-07-22 21:30:56,384 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) [2022-07-22 21:30:56,384 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:56,384 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] [2022-07-22 21:30:56,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:30:56,384 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)] === [2022-07-22 21:30:56,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:56,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1411939023, now seen corresponding path program 3 times [2022-07-22 21:30:56,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:56,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112860679] [2022-07-22 21:30:56,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:56,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:57,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:30:57,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:57,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112860679] [2022-07-22 21:30:57,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112860679] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:57,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:57,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-07-22 21:30:57,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069334593] [2022-07-22 21:30:57,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:57,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-22 21:30:57,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:57,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-22 21:30:57,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1416, Unknown=0, NotChecked=0, Total=1560 [2022-07-22 21:30:57,818 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 507 [2022-07-22 21:30:57,822 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) [2022-07-22 21:30:57,822 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:57,822 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 507 [2022-07-22 21:30:57,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:31:45,675 INFO L129 PetriNetUnfolder]: 35748/110684 cut-off events. [2022-07-22 21:31:45,676 INFO L130 PetriNetUnfolder]: For 426750/426980 co-relation queries the response was YES. [2022-07-22 21:31:47,721 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. [2022-07-22 21:31:48,183 INFO L132 encePairwiseOnDemand]: 435/507 looper letters, 2474 selfloop transitions, 565 changer transitions 0/3299 dead transitions. [2022-07-22 21:31:48,183 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 785 places, 3299 transitions, 25702 flow [2022-07-22 21:31:48,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-07-22 21:31:48,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2022-07-22 21:31:48,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 29916 transitions. [2022-07-22 21:31:48,206 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5673645880746473 [2022-07-22 21:31:48,207 INFO L72 ComplementDD]: Start complementDD. Operand 104 states and 29916 transitions. [2022-07-22 21:31:48,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 29916 transitions. [2022-07-22 21:31:48,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:31:48,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 104 states and 29916 transitions. [2022-07-22 21:31:48,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 105 states, 104 states have (on average 287.65384615384613) internal successors, (29916), 104 states have internal predecessors, (29916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:48,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 105 states, 105 states have (on average 507.0) internal successors, (53235), 105 states have internal predecessors, (53235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:48,287 INFO L81 ComplementDD]: Finished complementDD. Result has 105 states, 105 states have (on average 507.0) internal successors, (53235), 105 states have internal predecessors, (53235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:48,287 INFO L186 Difference]: Start difference. First operand has 682 places, 1030 transitions, 6422 flow. Second operand 104 states and 29916 transitions. [2022-07-22 21:31:48,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 785 places, 3299 transitions, 25702 flow [2022-07-22 21:31:52,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 764 places, 3299 transitions, 25138 flow, removed 236 selfloop flow, removed 21 redundant places. [2022-07-22 21:31:52,324 INFO L242 Difference]: Finished difference. Result has 816 places, 1453 transitions, 12029 flow [2022-07-22 21:31:52,326 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=5996, PETRI_DIFFERENCE_MINUEND_PLACES=661, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1030, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=796, PETRI_DIFFERENCE_SUBTRAHEND_STATES=104, PETRI_FLOW=12029, PETRI_PLACES=816, PETRI_TRANSITIONS=1453} [2022-07-22 21:31:52,326 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 357 predicate places. [2022-07-22 21:31:52,326 INFO L495 AbstractCegarLoop]: Abstraction has has 816 places, 1453 transitions, 12029 flow [2022-07-22 21:31:52,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2022-07-22 21:31:52,328 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:31:52,328 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] [2022-07-22 21:31:52,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 21:31:52,328 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-22 21:31:52,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:31:52,329 INFO L85 PathProgramCache]: Analyzing trace with hash 783714969, now seen corresponding path program 4 times [2022-07-22 21:31:52,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:31:52,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521901271] [2022-07-22 21:31:52,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:31:52,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:31:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:31:53,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:31:53,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:31:53,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521901271] [2022-07-22 21:31:53,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521901271] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:31:53,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:31:53,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-07-22 21:31:53,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009178071] [2022-07-22 21:31:53,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:31:53,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-22 21:31:53,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:31:53,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-22 21:31:53,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1422, Unknown=0, NotChecked=0, Total=1560 [2022-07-22 21:31:53,673 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 507 [2022-07-22 21:31:53,689 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 816 places, 1453 transitions, 12029 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) [2022-07-22 21:31:53,689 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:31:53,689 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 507 [2022-07-22 21:31:53,689 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand