./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 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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-?-6c24879 [2022-07-12 10:13:03,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:13:03,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:13:03,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:13:03,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:13:03,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:13:03,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:13:03,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:13:03,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:13:03,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:13:03,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:13:03,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:13:03,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:13:03,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:13:03,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:13:03,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:13:03,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:13:03,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:13:03,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:13:03,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:13:03,837 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:13:03,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:13:03,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:13:03,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:13:03,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:13:03,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:13:03,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:13:03,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:13:03,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:13:03,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:13:03,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:13:03,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:13:03,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:13:03,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:13:03,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:13:03,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:13:03,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:13:03,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:13:03,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:13:03,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:13:03,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:13:03,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:13:03,854 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:13:03,880 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:13:03,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:13:03,881 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:13:03,881 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:13:03,882 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:13:03,882 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:13:03,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:13:03,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:13:03,883 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:13:03,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:13:03,884 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:13:03,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:13:03,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:13:03,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:13:03,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:13:03,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:13:03,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:13:03,885 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:13:03,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:13:03,885 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:13:03,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:13:03,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:13:03,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:13:03,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:13:03,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:13:03,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:13:03,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:13:03,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:13:03,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:13:03,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:13:03,887 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:13:03,887 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:13:03,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:13:03,887 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32482febe38d61a93fd0705f3ad97c9c1ccc991b1238f75e4d1dd99bfb01c35e [2022-07-12 10:13:04,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:13:04,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:13:04,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:13:04,097 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:13:04,097 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:13:04,098 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i [2022-07-12 10:13:04,162 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0440f5fc/29bb984b1e6a4143808e9a74ada47e7f/FLAG431f1b2ca [2022-07-12 10:13:04,603 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:13:04,604 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i [2022-07-12 10:13:04,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0440f5fc/29bb984b1e6a4143808e9a74ada47e7f/FLAG431f1b2ca [2022-07-12 10:13:04,936 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0440f5fc/29bb984b1e6a4143808e9a74ada47e7f [2022-07-12 10:13:04,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:13:04,939 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:13:04,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:13:04,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:13:04,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:13:04,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:13:04" (1/1) ... [2022-07-12 10:13:04,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f653ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:04, skipping insertion in model container [2022-07-12 10:13:04,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:13:04" (1/1) ... [2022-07-12 10:13:04,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:13:04,996 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:13:05,154 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-12 10:13:05,381 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] [2022-07-12 10:13:05,387 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] [2022-07-12 10:13:05,403 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] [2022-07-12 10:13:05,405 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] [2022-07-12 10:13:05,413 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] [2022-07-12 10:13:05,414 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] [2022-07-12 10:13:05,426 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] [2022-07-12 10:13:05,427 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] [2022-07-12 10:13:05,428 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] [2022-07-12 10:13:05,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:13:05,436 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:13:05,448 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-12 10:13:05,467 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] [2022-07-12 10:13:05,475 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] [2022-07-12 10:13:05,481 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] [2022-07-12 10:13:05,484 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] [2022-07-12 10:13:05,488 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] [2022-07-12 10:13:05,490 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] [2022-07-12 10:13:05,495 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] [2022-07-12 10:13:05,497 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] [2022-07-12 10:13:05,497 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] [2022-07-12 10:13:05,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:13:05,540 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:13:05,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:05 WrapperNode [2022-07-12 10:13:05,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:13:05,542 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:13:05,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:13:05,543 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:13:05,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:05" (1/1) ... [2022-07-12 10:13:05,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:05" (1/1) ... [2022-07-12 10:13:05,612 INFO L137 Inliner]: procedures = 278, calls = 103, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 416 [2022-07-12 10:13:05,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:13:05,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:13:05,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:13:05,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:13:05,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:05" (1/1) ... [2022-07-12 10:13:05,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:05" (1/1) ... [2022-07-12 10:13:05,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:05" (1/1) ... [2022-07-12 10:13:05,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:05" (1/1) ... [2022-07-12 10:13:05,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:05" (1/1) ... [2022-07-12 10:13:05,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:05" (1/1) ... [2022-07-12 10:13:05,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:05" (1/1) ... [2022-07-12 10:13:05,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:13:05,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:13:05,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:13:05,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:13:05,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:05" (1/1) ... [2022-07-12 10:13:05,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:13:05,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:13:05,701 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:13:05,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:13:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-07-12 10:13:05,750 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-07-12 10:13:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:13:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 10:13:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:13:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:13:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:13:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:13:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:13:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 10:13:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:13:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:13:05,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:13:05,753 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:13:05,978 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:13:05,979 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:13:06,478 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:13:06,484 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:13:06,485 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-12 10:13:06,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:13:06 BoogieIcfgContainer [2022-07-12 10:13:06,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:13:06,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:13:06,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:13:06,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:13:06,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:13:04" (1/3) ... [2022-07-12 10:13:06,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fcfc8dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:13:06, skipping insertion in model container [2022-07-12 10:13:06,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:05" (2/3) ... [2022-07-12 10:13:06,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fcfc8dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:13:06, skipping insertion in model container [2022-07-12 10:13:06,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:13:06" (3/3) ... [2022-07-12 10:13:06,499 INFO L111 eAbstractionObserver]: Analyzing ICFG divinefifo-bug_1w1r.i [2022-07-12 10:13:06,502 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:13:06,508 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:13:06,509 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-07-12 10:13:06,509 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:13:06,579 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-12 10:13:06,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 478 places, 507 transitions, 1022 flow [2022-07-12 10:13:06,768 INFO L129 PetriNetUnfolder]: 33/506 cut-off events. [2022-07-12 10:13:06,768 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-12 10:13:06,778 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. [2022-07-12 10:13:06,779 INFO L82 GeneralOperation]: Start removeDead. Operand has 478 places, 507 transitions, 1022 flow [2022-07-12 10:13:06,790 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 459 places, 487 transitions, 980 flow [2022-07-12 10:13:06,807 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:13:06,814 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@741120c9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@11bf335f [2022-07-12 10:13:06,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-07-12 10:13:06,824 INFO L129 PetriNetUnfolder]: 2/69 cut-off events. [2022-07-12 10:13:06,824 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:13:06,824 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:06,825 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] [2022-07-12 10:13:06,825 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)] === [2022-07-12 10:13:06,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:06,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1954338316, now seen corresponding path program 1 times [2022-07-12 10:13:06,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:06,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655166967] [2022-07-12 10:13:06,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:06,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:07,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:07,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:07,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655166967] [2022-07-12 10:13:07,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655166967] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:13:07,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:13:07,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 10:13:07,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20819006] [2022-07-12 10:13:07,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:13:07,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 10:13:07,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:07,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 10:13:07,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-12 10:13:07,340 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 507 [2022-07-12 10:13:07,348 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) [2022-07-12 10:13:07,348 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:07,349 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 507 [2022-07-12 10:13:07,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:13:08,786 INFO L129 PetriNetUnfolder]: 1991/7285 cut-off events. [2022-07-12 10:13:08,786 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-12 10:13:08,798 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. [2022-07-12 10:13:08,824 INFO L132 encePairwiseOnDemand]: 468/507 looper letters, 166 selfloop transitions, 24 changer transitions 0/487 dead transitions. [2022-07-12 10:13:08,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 487 transitions, 1360 flow [2022-07-12 10:13:08,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:13:08,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-12 10:13:08,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4602 transitions. [2022-07-12 10:13:08,846 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6483516483516484 [2022-07-12 10:13:08,847 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4602 transitions. [2022-07-12 10:13:08,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4602 transitions. [2022-07-12 10:13:08,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:13:08,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4602 transitions. [2022-07-12 10:13:08,866 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) [2022-07-12 10:13:08,881 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) [2022-07-12 10:13:08,885 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) [2022-07-12 10:13:08,887 INFO L186 Difference]: Start difference. First operand has 459 places, 487 transitions, 980 flow. Second operand 14 states and 4602 transitions. [2022-07-12 10:13:08,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 487 transitions, 1360 flow [2022-07-12 10:13:08,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 487 transitions, 1356 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:13:08,899 INFO L242 Difference]: Finished difference. Result has 470 places, 472 transitions, 994 flow [2022-07-12 10:13:08,901 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} [2022-07-12 10:13:08,904 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 11 predicate places. [2022-07-12 10:13:08,904 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 472 transitions, 994 flow [2022-07-12 10:13:08,906 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) [2022-07-12 10:13:08,906 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:08,907 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] [2022-07-12 10:13:08,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:13:08,907 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)] === [2022-07-12 10:13:08,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:08,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1408163568, now seen corresponding path program 1 times [2022-07-12 10:13:08,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:08,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025513021] [2022-07-12 10:13:08,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:08,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:09,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:09,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:09,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025513021] [2022-07-12 10:13:09,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025513021] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:13:09,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:13:09,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-12 10:13:09,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814022628] [2022-07-12 10:13:09,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:13:09,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-12 10:13:09,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:09,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-12 10:13:09,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2022-07-12 10:13:09,387 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 507 [2022-07-12 10:13:09,393 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) [2022-07-12 10:13:09,393 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:09,393 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 507 [2022-07-12 10:13:09,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:13:13,429 INFO L129 PetriNetUnfolder]: 4756/14876 cut-off events. [2022-07-12 10:13:13,430 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-07-12 10:13:13,450 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. [2022-07-12 10:13:13,489 INFO L132 encePairwiseOnDemand]: 462/507 looper letters, 387 selfloop transitions, 54 changer transitions 0/694 dead transitions. [2022-07-12 10:13:13,489 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 694 transitions, 2341 flow [2022-07-12 10:13:13,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-12 10:13:13,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-12 10:13:13,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 9018 transitions. [2022-07-12 10:13:13,506 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5558431952662722 [2022-07-12 10:13:13,507 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 9018 transitions. [2022-07-12 10:13:13,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 9018 transitions. [2022-07-12 10:13:13,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:13:13,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 9018 transitions. [2022-07-12 10:13:13,527 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) [2022-07-12 10:13:13,549 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) [2022-07-12 10:13:13,555 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) [2022-07-12 10:13:13,556 INFO L186 Difference]: Start difference. First operand has 470 places, 472 transitions, 994 flow. Second operand 32 states and 9018 transitions. [2022-07-12 10:13:13,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 694 transitions, 2341 flow [2022-07-12 10:13:13,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 694 transitions, 2273 flow, removed 0 selfloop flow, removed 13 redundant places. [2022-07-12 10:13:13,576 INFO L242 Difference]: Finished difference. Result has 488 places, 487 transitions, 1119 flow [2022-07-12 10:13:13,577 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} [2022-07-12 10:13:13,577 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 29 predicate places. [2022-07-12 10:13:13,578 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 487 transitions, 1119 flow [2022-07-12 10:13:13,589 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) [2022-07-12 10:13:13,590 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:13,590 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] [2022-07-12 10:13:13,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:13:13,591 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)] === [2022-07-12 10:13:13,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:13,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1612565280, now seen corresponding path program 1 times [2022-07-12 10:13:13,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:13,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371310442] [2022-07-12 10:13:13,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:13,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:13,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:13,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:13,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371310442] [2022-07-12 10:13:13,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371310442] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:13:13,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:13:13,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:13:13,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674770467] [2022-07-12 10:13:13,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:13:13,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:13:13,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:13,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:13:13,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:13:13,694 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 479 out of 507 [2022-07-12 10:13:13,696 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) [2022-07-12 10:13:13,696 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:13,696 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 479 of 507 [2022-07-12 10:13:13,696 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:13:13,843 INFO L129 PetriNetUnfolder]: 31/902 cut-off events. [2022-07-12 10:13:13,843 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-07-12 10:13:13,847 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. [2022-07-12 10:13:13,849 INFO L132 encePairwiseOnDemand]: 499/507 looper letters, 8 selfloop transitions, 7 changer transitions 0/488 dead transitions. [2022-07-12 10:13:13,849 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 488 transitions, 1148 flow [2022-07-12 10:13:13,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:13:13,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:13:13,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2411 transitions. [2022-07-12 10:13:13,853 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9510848126232742 [2022-07-12 10:13:13,853 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2411 transitions. [2022-07-12 10:13:13,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2411 transitions. [2022-07-12 10:13:13,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:13:13,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2411 transitions. [2022-07-12 10:13:13,857 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) [2022-07-12 10:13:13,859 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) [2022-07-12 10:13:13,860 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) [2022-07-12 10:13:13,860 INFO L186 Difference]: Start difference. First operand has 488 places, 487 transitions, 1119 flow. Second operand 5 states and 2411 transitions. [2022-07-12 10:13:13,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 488 transitions, 1148 flow [2022-07-12 10:13:13,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 488 transitions, 1093 flow, removed 1 selfloop flow, removed 26 redundant places. [2022-07-12 10:13:13,867 INFO L242 Difference]: Finished difference. Result has 468 places, 487 transitions, 1085 flow [2022-07-12 10:13:13,868 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} [2022-07-12 10:13:13,869 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 9 predicate places. [2022-07-12 10:13:13,869 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 487 transitions, 1085 flow [2022-07-12 10:13:13,869 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) [2022-07-12 10:13:13,869 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:13,870 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:13:13,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:13:13,870 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)] === [2022-07-12 10:13:13,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:13,870 INFO L85 PathProgramCache]: Analyzing trace with hash 519425822, now seen corresponding path program 1 times [2022-07-12 10:13:13,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:13,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346251340] [2022-07-12 10:13:13,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:13,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:13,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:13,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:13,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346251340] [2022-07-12 10:13:13,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346251340] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:13:13,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:13:13,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:13:13,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818774328] [2022-07-12 10:13:13,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:13:13,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:13:13,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:13,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:13:13,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:13:13,913 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 482 out of 507 [2022-07-12 10:13:13,914 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) [2022-07-12 10:13:13,914 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:13,914 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 482 of 507 [2022-07-12 10:13:13,914 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:13:14,062 INFO L129 PetriNetUnfolder]: 42/1173 cut-off events. [2022-07-12 10:13:14,062 INFO L130 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-07-12 10:13:14,071 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. [2022-07-12 10:13:14,074 INFO L132 encePairwiseOnDemand]: 504/507 looper letters, 13 selfloop transitions, 2 changer transitions 0/491 dead transitions. [2022-07-12 10:13:14,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 491 transitions, 1119 flow [2022-07-12 10:13:14,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:13:14,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:13:14,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1462 transitions. [2022-07-12 10:13:14,077 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9612097304404996 [2022-07-12 10:13:14,077 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1462 transitions. [2022-07-12 10:13:14,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1462 transitions. [2022-07-12 10:13:14,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:13:14,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1462 transitions. [2022-07-12 10:13:14,080 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) [2022-07-12 10:13:14,081 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) [2022-07-12 10:13:14,081 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) [2022-07-12 10:13:14,082 INFO L186 Difference]: Start difference. First operand has 468 places, 487 transitions, 1085 flow. Second operand 3 states and 1462 transitions. [2022-07-12 10:13:14,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 491 transitions, 1119 flow [2022-07-12 10:13:14,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 491 transitions, 1110 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-07-12 10:13:14,089 INFO L242 Difference]: Finished difference. Result has 469 places, 487 transitions, 1082 flow [2022-07-12 10:13:14,090 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} [2022-07-12 10:13:14,090 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 10 predicate places. [2022-07-12 10:13:14,090 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 487 transitions, 1082 flow [2022-07-12 10:13:14,091 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) [2022-07-12 10:13:14,091 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:14,091 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] [2022-07-12 10:13:14,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:13:14,092 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)] === [2022-07-12 10:13:14,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:14,092 INFO L85 PathProgramCache]: Analyzing trace with hash 2048381946, now seen corresponding path program 1 times [2022-07-12 10:13:14,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:14,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196209273] [2022-07-12 10:13:14,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:14,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:14,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:14,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:14,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196209273] [2022-07-12 10:13:14,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196209273] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:13:14,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:13:14,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-12 10:13:14,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871652235] [2022-07-12 10:13:14,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:13:14,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-12 10:13:14,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:14,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-12 10:13:14,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-07-12 10:13:14,367 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 507 [2022-07-12 10:13:14,370 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) [2022-07-12 10:13:14,371 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:14,371 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 507 [2022-07-12 10:13:14,371 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:13:18,784 INFO L129 PetriNetUnfolder]: 6024/22966 cut-off events. [2022-07-12 10:13:18,785 INFO L130 PetriNetUnfolder]: For 413/413 co-relation queries the response was YES. [2022-07-12 10:13:18,822 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. [2022-07-12 10:13:18,869 INFO L132 encePairwiseOnDemand]: 475/507 looper letters, 347 selfloop transitions, 44 changer transitions 0/721 dead transitions. [2022-07-12 10:13:18,870 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 721 transitions, 2341 flow [2022-07-12 10:13:18,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:13:18,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:13:18,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 7761 transitions. [2022-07-12 10:13:18,880 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6958041958041958 [2022-07-12 10:13:18,880 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 7761 transitions. [2022-07-12 10:13:18,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 7761 transitions. [2022-07-12 10:13:18,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:13:18,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 7761 transitions. [2022-07-12 10:13:18,891 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) [2022-07-12 10:13:18,902 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) [2022-07-12 10:13:18,904 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) [2022-07-12 10:13:18,904 INFO L186 Difference]: Start difference. First operand has 469 places, 487 transitions, 1082 flow. Second operand 22 states and 7761 transitions. [2022-07-12 10:13:18,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 721 transitions, 2341 flow [2022-07-12 10:13:18,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 721 transitions, 2339 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:13:18,915 INFO L242 Difference]: Finished difference. Result has 497 places, 519 transitions, 1320 flow [2022-07-12 10:13:18,915 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} [2022-07-12 10:13:18,916 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 38 predicate places. [2022-07-12 10:13:18,916 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 519 transitions, 1320 flow [2022-07-12 10:13:18,918 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) [2022-07-12 10:13:18,918 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:18,918 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] [2022-07-12 10:13:18,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:13:18,918 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)] === [2022-07-12 10:13:18,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:18,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1009639929, now seen corresponding path program 1 times [2022-07-12 10:13:18,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:18,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950767004] [2022-07-12 10:13:18,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:18,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:19,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:19,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:19,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950767004] [2022-07-12 10:13:19,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950767004] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:13:19,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:13:19,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:13:19,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009096345] [2022-07-12 10:13:19,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:13:19,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:13:19,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:19,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:13:19,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:13:19,030 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 507 [2022-07-12 10:13:19,031 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) [2022-07-12 10:13:19,031 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:19,031 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 507 [2022-07-12 10:13:19,031 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:13:19,890 INFO L129 PetriNetUnfolder]: 300/5891 cut-off events. [2022-07-12 10:13:19,890 INFO L130 PetriNetUnfolder]: For 205/218 co-relation queries the response was YES. [2022-07-12 10:13:19,921 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. [2022-07-12 10:13:19,934 INFO L132 encePairwiseOnDemand]: 484/507 looper letters, 76 selfloop transitions, 22 changer transitions 0/543 dead transitions. [2022-07-12 10:13:19,934 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 543 transitions, 1569 flow [2022-07-12 10:13:19,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:13:19,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-12 10:13:19,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2676 transitions. [2022-07-12 10:13:19,938 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8796844181459567 [2022-07-12 10:13:19,938 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2676 transitions. [2022-07-12 10:13:19,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2676 transitions. [2022-07-12 10:13:19,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:13:19,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2676 transitions. [2022-07-12 10:13:19,943 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) [2022-07-12 10:13:19,946 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) [2022-07-12 10:13:19,946 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) [2022-07-12 10:13:19,946 INFO L186 Difference]: Start difference. First operand has 497 places, 519 transitions, 1320 flow. Second operand 6 states and 2676 transitions. [2022-07-12 10:13:19,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 543 transitions, 1569 flow [2022-07-12 10:13:19,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 543 transitions, 1547 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-07-12 10:13:19,955 INFO L242 Difference]: Finished difference. Result has 495 places, 536 transitions, 1448 flow [2022-07-12 10:13:19,956 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} [2022-07-12 10:13:19,956 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 36 predicate places. [2022-07-12 10:13:19,957 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 536 transitions, 1448 flow [2022-07-12 10:13:19,957 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) [2022-07-12 10:13:19,957 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:19,957 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:13:19,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:13:19,958 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)] === [2022-07-12 10:13:19,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:19,958 INFO L85 PathProgramCache]: Analyzing trace with hash -642914649, now seen corresponding path program 1 times [2022-07-12 10:13:19,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:19,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818696246] [2022-07-12 10:13:19,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:19,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:20,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:20,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:20,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818696246] [2022-07-12 10:13:20,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818696246] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:13:20,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:13:20,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-12 10:13:20,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667673299] [2022-07-12 10:13:20,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:13:20,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-12 10:13:20,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:20,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-12 10:13:20,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2022-07-12 10:13:20,554 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 507 [2022-07-12 10:13:20,558 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) [2022-07-12 10:13:20,558 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:20,558 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 507 [2022-07-12 10:13:20,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:13:30,275 INFO L129 PetriNetUnfolder]: 12936/44496 cut-off events. [2022-07-12 10:13:30,275 INFO L130 PetriNetUnfolder]: For 5167/5180 co-relation queries the response was YES. [2022-07-12 10:13:30,456 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. [2022-07-12 10:13:30,691 INFO L132 encePairwiseOnDemand]: 436/507 looper letters, 699 selfloop transitions, 171 changer transitions 0/1163 dead transitions. [2022-07-12 10:13:30,691 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 1163 transitions, 4756 flow [2022-07-12 10:13:30,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-12 10:13:30,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-12 10:13:30,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 11877 transitions. [2022-07-12 10:13:30,704 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6331360946745562 [2022-07-12 10:13:30,704 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 11877 transitions. [2022-07-12 10:13:30,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 11877 transitions. [2022-07-12 10:13:30,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:13:30,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 11877 transitions. [2022-07-12 10:13:30,720 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) [2022-07-12 10:13:30,738 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) [2022-07-12 10:13:30,741 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) [2022-07-12 10:13:30,741 INFO L186 Difference]: Start difference. First operand has 495 places, 536 transitions, 1448 flow. Second operand 37 states and 11877 transitions. [2022-07-12 10:13:30,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 1163 transitions, 4756 flow [2022-07-12 10:13:30,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 1163 transitions, 4737 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-12 10:13:30,768 INFO L242 Difference]: Finished difference. Result has 550 places, 649 transitions, 2562 flow [2022-07-12 10:13:30,769 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} [2022-07-12 10:13:30,770 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 91 predicate places. [2022-07-12 10:13:30,770 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 649 transitions, 2562 flow [2022-07-12 10:13:30,771 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) [2022-07-12 10:13:30,771 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:30,772 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] [2022-07-12 10:13:30,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:13:30,772 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)] === [2022-07-12 10:13:30,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:30,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1647572475, now seen corresponding path program 2 times [2022-07-12 10:13:30,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:30,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543736186] [2022-07-12 10:13:30,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:30,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:31,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:31,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:31,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543736186] [2022-07-12 10:13:31,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543736186] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:13:31,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:13:31,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-07-12 10:13:31,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065377641] [2022-07-12 10:13:31,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:13:31,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-12 10:13:31,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:31,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-12 10:13:31,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1197, Unknown=0, NotChecked=0, Total=1332 [2022-07-12 10:13:31,889 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 507 [2022-07-12 10:13:31,894 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) [2022-07-12 10:13:31,894 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:31,894 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 507 [2022-07-12 10:13:31,894 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:14:03,103 INFO L129 PetriNetUnfolder]: 20479/68495 cut-off events. [2022-07-12 10:14:03,103 INFO L130 PetriNetUnfolder]: For 140431/140483 co-relation queries the response was YES. [2022-07-12 10:14:03,697 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. [2022-07-12 10:14:03,877 INFO L132 encePairwiseOnDemand]: 434/507 looper letters, 1166 selfloop transitions, 422 changer transitions 0/1862 dead transitions. [2022-07-12 10:14:03,877 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 660 places, 1862 transitions, 10707 flow [2022-07-12 10:14:03,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-07-12 10:14:03,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2022-07-12 10:14:03,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 32635 transitions. [2022-07-12 10:14:03,898 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5798994260532722 [2022-07-12 10:14:03,898 INFO L72 ComplementDD]: Start complementDD. Operand 111 states and 32635 transitions. [2022-07-12 10:14:03,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 32635 transitions. [2022-07-12 10:14:03,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:14:03,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 111 states and 32635 transitions. [2022-07-12 10:14:03,938 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) [2022-07-12 10:14:04,154 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) [2022-07-12 10:14:04,161 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) [2022-07-12 10:14:04,161 INFO L186 Difference]: Start difference. First operand has 550 places, 649 transitions, 2562 flow. Second operand 111 states and 32635 transitions. [2022-07-12 10:14:04,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 660 places, 1862 transitions, 10707 flow [2022-07-12 10:14:04,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 652 places, 1862 transitions, 10542 flow, removed 11 selfloop flow, removed 8 redundant places. [2022-07-12 10:14:04,450 INFO L242 Difference]: Finished difference. Result has 682 places, 1030 transitions, 6422 flow [2022-07-12 10:14:04,451 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} [2022-07-12 10:14:04,454 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 223 predicate places. [2022-07-12 10:14:04,455 INFO L495 AbstractCegarLoop]: Abstraction has has 682 places, 1030 transitions, 6422 flow [2022-07-12 10:14:04,456 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) [2022-07-12 10:14:04,456 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:14:04,456 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] [2022-07-12 10:14:04,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:14:04,457 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)] === [2022-07-12 10:14:04,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:14:04,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1411939023, now seen corresponding path program 3 times [2022-07-12 10:14:04,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:14:04,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199680187] [2022-07-12 10:14:04,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:14:04,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:14:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:14:05,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:14:05,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:14:05,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199680187] [2022-07-12 10:14:05,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199680187] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:14:05,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:14:05,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-07-12 10:14:05,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728394740] [2022-07-12 10:14:05,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:14:05,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-12 10:14:05,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:14:05,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-12 10:14:05,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1416, Unknown=0, NotChecked=0, Total=1560 [2022-07-12 10:14:05,811 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 507 [2022-07-12 10:14:05,815 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) [2022-07-12 10:14:05,816 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:14:05,816 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 507 [2022-07-12 10:14:05,816 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand