./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-divine/divinefifo_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 43c4691e367ff0d8a9949fa90f15eddbc091ab75ed1546de74dafe83c2376639 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:14:56,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:14:56,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:14:56,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:14:56,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:14:56,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:14:56,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:14:56,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:14:56,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:14:56,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:14:56,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:14:56,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:14:56,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:14:56,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:14:56,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:14:56,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:14:56,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:14:56,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:14:56,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:14:56,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:14:56,794 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:14:56,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:14:56,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:14:56,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:14:56,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:14:56,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:14:56,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:14:56,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:14:56,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:14:56,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:14:56,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:14:56,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:14:56,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:14:56,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:14:56,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:14:56,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:14:56,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:14:56,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:14:56,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:14:56,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:14:56,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:14:56,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:14:56,810 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:14:56,836 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:14:56,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:14:56,837 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:14:56,837 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:14:56,837 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:14:56,838 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:14:56,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:14:56,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:14:56,838 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:14:56,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:14:56,839 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:14:56,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:14:56,839 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:14:56,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:14:56,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:14:56,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:14:56,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:14:56,840 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:14:56,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:14:56,840 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:14:56,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:14:56,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:14:56,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:14:56,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:14:56,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:14:56,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:14:56,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:14:56,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:14:56,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:14:56,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:14:56,850 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:14:56,850 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:14:56,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:14:56,851 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43c4691e367ff0d8a9949fa90f15eddbc091ab75ed1546de74dafe83c2376639 [2022-07-19 21:14:57,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:14:57,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:14:57,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:14:57,124 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:14:57,125 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:14:57,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i [2022-07-19 21:14:57,185 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6e3a7eb9/22e6632747ce49f19a42ccd8043f6092/FLAG056a6b5c4 [2022-07-19 21:14:57,720 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:14:57,731 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i [2022-07-19 21:14:57,751 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6e3a7eb9/22e6632747ce49f19a42ccd8043f6092/FLAG056a6b5c4 [2022-07-19 21:14:58,004 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6e3a7eb9/22e6632747ce49f19a42ccd8043f6092 [2022-07-19 21:14:58,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:14:58,008 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:14:58,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:14:58,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:14:58,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:14:58,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:14:58" (1/1) ... [2022-07-19 21:14:58,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d9e621d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:58, skipping insertion in model container [2022-07-19 21:14:58,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:14:58" (1/1) ... [2022-07-19 21:14:58,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:14:58,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:14:58,175 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-19 21:14:58,436 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_1w1r.i[47275,47288] [2022-07-19 21:14:58,445 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_1w1r.i[47463,47476] [2022-07-19 21:14:58,470 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_1w1r.i[48230,48243] [2022-07-19 21:14:58,471 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_1w1r.i[48344,48357] [2022-07-19 21:14:58,476 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_1w1r.i[48781,48794] [2022-07-19 21:14:58,477 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_1w1r.i[48837,48850] [2022-07-19 21:14:58,482 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_1w1r.i[49349,49362] [2022-07-19 21:14:58,485 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_1w1r.i[49408,49421] [2022-07-19 21:14:58,488 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_1w1r.i[49487,49500] [2022-07-19 21:14:58,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:14:58,495 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:14:58,508 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-19 21:14:58,540 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_1w1r.i[47275,47288] [2022-07-19 21:14:58,541 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_1w1r.i[47463,47476] [2022-07-19 21:14:58,546 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_1w1r.i[48230,48243] [2022-07-19 21:14:58,546 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_1w1r.i[48344,48357] [2022-07-19 21:14:58,549 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_1w1r.i[48781,48794] [2022-07-19 21:14:58,549 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_1w1r.i[48837,48850] [2022-07-19 21:14:58,555 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_1w1r.i[49349,49362] [2022-07-19 21:14:58,556 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_1w1r.i[49408,49421] [2022-07-19 21:14:58,562 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_1w1r.i[49487,49500] [2022-07-19 21:14:58,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:14:58,619 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:14:58,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:58 WrapperNode [2022-07-19 21:14:58,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:14:58,621 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:14:58,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:14:58,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:14:58,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:58" (1/1) ... [2022-07-19 21:14:58,665 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:58" (1/1) ... [2022-07-19 21:14:58,705 INFO L137 Inliner]: procedures = 278, calls = 101, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 405 [2022-07-19 21:14:58,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:14:58,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:14:58,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:14:58,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:14:58,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:58" (1/1) ... [2022-07-19 21:14:58,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:58" (1/1) ... [2022-07-19 21:14:58,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:58" (1/1) ... [2022-07-19 21:14:58,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:58" (1/1) ... [2022-07-19 21:14:58,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:58" (1/1) ... [2022-07-19 21:14:58,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:58" (1/1) ... [2022-07-19 21:14:58,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:58" (1/1) ... [2022-07-19 21:14:58,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:14:58,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:14:58,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:14:58,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:14:58,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:58" (1/1) ... [2022-07-19 21:14:58,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:14:58,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:14:58,794 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 21:14:58,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 21:14:58,825 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-07-19 21:14:58,825 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-07-19 21:14:58,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:14:58,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 21:14:58,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:14:58,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:14:58,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:14:58,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 21:14:58,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:14:58,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 21:14:58,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:14:58,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:14:58,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:14:58,829 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:14:59,001 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:14:59,002 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:14:59,631 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:14:59,639 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:14:59,640 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-19 21:14:59,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:14:59 BoogieIcfgContainer [2022-07-19 21:14:59,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:14:59,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:14:59,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:14:59,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:14:59,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:14:58" (1/3) ... [2022-07-19 21:14:59,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecb9e44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:14:59, skipping insertion in model container [2022-07-19 21:14:59,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:58" (2/3) ... [2022-07-19 21:14:59,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecb9e44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:14:59, skipping insertion in model container [2022-07-19 21:14:59,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:14:59" (3/3) ... [2022-07-19 21:14:59,648 INFO L111 eAbstractionObserver]: Analyzing ICFG divinefifo_1w1r.i [2022-07-19 21:14:59,652 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:14:59,659 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:14:59,659 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-07-19 21:14:59,659 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:14:59,722 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-19 21:14:59,765 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 467 places, 495 transitions, 998 flow [2022-07-19 21:14:59,971 INFO L129 PetriNetUnfolder]: 32/494 cut-off events. [2022-07-19 21:14:59,972 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-19 21:14:59,984 INFO L84 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 494 events. 32/494 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1130 event pairs, 0 based on Foata normal form. 0/451 useless extension candidates. Maximal degree in co-relation 340. Up to 3 conditions per place. [2022-07-19 21:14:59,984 INFO L82 GeneralOperation]: Start removeDead. Operand has 467 places, 495 transitions, 998 flow [2022-07-19 21:14:59,995 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 448 places, 475 transitions, 956 flow [2022-07-19 21:15:00,014 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:15:00,021 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@4607d0c5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1cacfc75 [2022-07-19 21:15:00,021 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-07-19 21:15:00,037 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2022-07-19 21:15:00,037 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:15:00,037 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:15:00,038 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:15:00,038 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-19 21:15:00,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:15:00,044 INFO L85 PathProgramCache]: Analyzing trace with hash 894712245, now seen corresponding path program 1 times [2022-07-19 21:15:00,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:15:00,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597235347] [2022-07-19 21:15:00,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:15:00,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:15:00,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:15:00,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:15:00,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:15:00,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597235347] [2022-07-19 21:15:00,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597235347] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:15:00,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:15:00,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 21:15:00,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982226475] [2022-07-19 21:15:00,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:15:00,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 21:15:00,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:15:00,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 21:15:00,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-19 21:15:00,617 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 495 [2022-07-19 21:15:00,627 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 475 transitions, 956 flow. Second operand has 12 states, 12 states have (on average 305.9166666666667) internal successors, (3671), 12 states have internal predecessors, (3671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:00,627 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:15:00,627 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 495 [2022-07-19 21:15:00,628 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:15:02,439 INFO L129 PetriNetUnfolder]: 1940/7030 cut-off events. [2022-07-19 21:15:02,440 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-19 21:15:02,456 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10498 conditions, 7030 events. 1940/7030 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 59332 event pairs, 1154 based on Foata normal form. 425/6954 useless extension candidates. Maximal degree in co-relation 10302. Up to 2759 conditions per place. [2022-07-19 21:15:02,484 INFO L132 encePairwiseOnDemand]: 456/495 looper letters, 164 selfloop transitions, 24 changer transitions 0/475 dead transitions. [2022-07-19 21:15:02,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 475 transitions, 1332 flow [2022-07-19 21:15:02,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:15:02,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-19 21:15:02,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4460 transitions. [2022-07-19 21:15:02,506 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6435786435786436 [2022-07-19 21:15:02,507 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4460 transitions. [2022-07-19 21:15:02,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4460 transitions. [2022-07-19 21:15:02,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:15:02,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4460 transitions. [2022-07-19 21:15:02,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 318.57142857142856) internal successors, (4460), 14 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:02,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 495.0) internal successors, (7425), 15 states have internal predecessors, (7425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:02,546 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 495.0) internal successors, (7425), 15 states have internal predecessors, (7425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:02,548 INFO L186 Difference]: Start difference. First operand has 448 places, 475 transitions, 956 flow. Second operand 14 states and 4460 transitions. [2022-07-19 21:15:02,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 475 transitions, 1332 flow [2022-07-19 21:15:02,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 475 transitions, 1328 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:15:02,566 INFO L242 Difference]: Finished difference. Result has 459 places, 460 transitions, 970 flow [2022-07-19 21:15:02,568 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=970, PETRI_PLACES=459, PETRI_TRANSITIONS=460} [2022-07-19 21:15:02,571 INFO L279 CegarLoopForPetriNet]: 448 programPoint places, 11 predicate places. [2022-07-19 21:15:02,572 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 460 transitions, 970 flow [2022-07-19 21:15:02,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 305.9166666666667) internal successors, (3671), 12 states have internal predecessors, (3671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:02,574 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:15:02,574 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:15:02,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:15:02,575 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-19 21:15:02,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:15:02,576 INFO L85 PathProgramCache]: Analyzing trace with hash 775770239, now seen corresponding path program 1 times [2022-07-19 21:15:02,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:15:02,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559326196] [2022-07-19 21:15:02,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:15:02,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:15:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:15:03,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:15:03,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:15:03,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559326196] [2022-07-19 21:15:03,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559326196] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:15:03,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:15:03,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-19 21:15:03,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368424606] [2022-07-19 21:15:03,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:15:03,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-19 21:15:03,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:15:03,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-19 21:15:03,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2022-07-19 21:15:03,206 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 495 [2022-07-19 21:15:03,212 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 460 transitions, 970 flow. Second operand has 22 states, 22 states have (on average 259.95454545454544) internal successors, (5719), 22 states have internal predecessors, (5719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:03,212 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:15:03,213 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 495 [2022-07-19 21:15:03,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:15:07,757 INFO L129 PetriNetUnfolder]: 4650/14396 cut-off events. [2022-07-19 21:15:07,758 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-07-19 21:15:07,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23304 conditions, 14396 events. 4650/14396 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 129326 event pairs, 166 based on Foata normal form. 0/13710 useless extension candidates. Maximal degree in co-relation 19793. Up to 3542 conditions per place. [2022-07-19 21:15:07,849 INFO L132 encePairwiseOnDemand]: 450/495 looper letters, 383 selfloop transitions, 54 changer transitions 0/680 dead transitions. [2022-07-19 21:15:07,849 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 680 transitions, 2305 flow [2022-07-19 21:15:07,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-19 21:15:07,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-19 21:15:07,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 8694 transitions. [2022-07-19 21:15:07,872 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5488636363636363 [2022-07-19 21:15:07,873 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 8694 transitions. [2022-07-19 21:15:07,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 8694 transitions. [2022-07-19 21:15:07,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:15:07,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 8694 transitions. [2022-07-19 21:15:07,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 271.6875) internal successors, (8694), 32 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:07,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 495.0) internal successors, (16335), 33 states have internal predecessors, (16335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:07,922 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 495.0) internal successors, (16335), 33 states have internal predecessors, (16335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:07,922 INFO L186 Difference]: Start difference. First operand has 459 places, 460 transitions, 970 flow. Second operand 32 states and 8694 transitions. [2022-07-19 21:15:07,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 680 transitions, 2305 flow [2022-07-19 21:15:07,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 680 transitions, 2237 flow, removed 0 selfloop flow, removed 13 redundant places. [2022-07-19 21:15:07,943 INFO L242 Difference]: Finished difference. Result has 477 places, 475 transitions, 1095 flow [2022-07-19 21:15:07,943 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1095, PETRI_PLACES=477, PETRI_TRANSITIONS=475} [2022-07-19 21:15:07,944 INFO L279 CegarLoopForPetriNet]: 448 programPoint places, 29 predicate places. [2022-07-19 21:15:07,944 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 475 transitions, 1095 flow [2022-07-19 21:15:07,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 259.95454545454544) internal successors, (5719), 22 states have internal predecessors, (5719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:07,947 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:15:07,947 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:15:07,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:15:07,948 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-19 21:15:07,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:15:07,949 INFO L85 PathProgramCache]: Analyzing trace with hash -2057725171, now seen corresponding path program 1 times [2022-07-19 21:15:07,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:15:07,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140349823] [2022-07-19 21:15:07,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:15:07,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:15:08,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:15:08,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:15:08,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:15:08,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140349823] [2022-07-19 21:15:08,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140349823] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:15:08,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:15:08,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:15:08,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459420011] [2022-07-19 21:15:08,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:15:08,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:15:08,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:15:08,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:15:08,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:15:08,053 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 467 out of 495 [2022-07-19 21:15:08,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 475 transitions, 1095 flow. Second operand has 5 states, 5 states have (on average 468.6) internal successors, (2343), 5 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:08,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:15:08,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 467 of 495 [2022-07-19 21:15:08,056 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:15:08,216 INFO L129 PetriNetUnfolder]: 29/878 cut-off events. [2022-07-19 21:15:08,217 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-07-19 21:15:08,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 996 conditions, 878 events. 29/878 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 2207 event pairs, 0 based on Foata normal form. 0/838 useless extension candidates. Maximal degree in co-relation 634. Up to 18 conditions per place. [2022-07-19 21:15:08,228 INFO L132 encePairwiseOnDemand]: 487/495 looper letters, 8 selfloop transitions, 7 changer transitions 0/476 dead transitions. [2022-07-19 21:15:08,228 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 476 transitions, 1124 flow [2022-07-19 21:15:08,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:15:08,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:15:08,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2351 transitions. [2022-07-19 21:15:08,233 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9498989898989899 [2022-07-19 21:15:08,234 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2351 transitions. [2022-07-19 21:15:08,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2351 transitions. [2022-07-19 21:15:08,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:15:08,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2351 transitions. [2022-07-19 21:15:08,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 470.2) internal successors, (2351), 5 states have internal predecessors, (2351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:08,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 495.0) internal successors, (2970), 6 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:08,245 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 495.0) internal successors, (2970), 6 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:08,245 INFO L186 Difference]: Start difference. First operand has 477 places, 475 transitions, 1095 flow. Second operand 5 states and 2351 transitions. [2022-07-19 21:15:08,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 476 transitions, 1124 flow [2022-07-19 21:15:08,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 476 transitions, 1069 flow, removed 1 selfloop flow, removed 26 redundant places. [2022-07-19 21:15:08,254 INFO L242 Difference]: Finished difference. Result has 457 places, 475 transitions, 1061 flow [2022-07-19 21:15:08,255 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1061, PETRI_PLACES=457, PETRI_TRANSITIONS=475} [2022-07-19 21:15:08,256 INFO L279 CegarLoopForPetriNet]: 448 programPoint places, 9 predicate places. [2022-07-19 21:15:08,256 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 475 transitions, 1061 flow [2022-07-19 21:15:08,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 468.6) internal successors, (2343), 5 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:08,257 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:15:08,257 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:15:08,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:15:08,258 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-19 21:15:08,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:15:08,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1711191470, now seen corresponding path program 1 times [2022-07-19 21:15:08,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:15:08,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872737465] [2022-07-19 21:15:08,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:15:08,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:15:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:15:08,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:15:08,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:15:08,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872737465] [2022-07-19 21:15:08,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872737465] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:15:08,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:15:08,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:15:08,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167878502] [2022-07-19 21:15:08,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:15:08,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:15:08,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:15:08,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:15:08,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:15:08,342 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 470 out of 495 [2022-07-19 21:15:08,344 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 475 transitions, 1061 flow. Second operand has 3 states, 3 states have (on average 471.3333333333333) internal successors, (1414), 3 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:08,344 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:15:08,344 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 470 of 495 [2022-07-19 21:15:08,344 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:15:08,512 INFO L129 PetriNetUnfolder]: 38/1125 cut-off events. [2022-07-19 21:15:08,512 INFO L130 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-07-19 21:15:08,524 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1254 conditions, 1125 events. 38/1125 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 3134 event pairs, 1 based on Foata normal form. 0/1074 useless extension candidates. Maximal degree in co-relation 991. Up to 22 conditions per place. [2022-07-19 21:15:08,527 INFO L132 encePairwiseOnDemand]: 492/495 looper letters, 13 selfloop transitions, 2 changer transitions 0/479 dead transitions. [2022-07-19 21:15:08,527 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 479 transitions, 1095 flow [2022-07-19 21:15:08,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:15:08,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:15:08,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1426 transitions. [2022-07-19 21:15:08,531 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9602693602693603 [2022-07-19 21:15:08,531 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1426 transitions. [2022-07-19 21:15:08,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1426 transitions. [2022-07-19 21:15:08,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:15:08,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1426 transitions. [2022-07-19 21:15:08,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 475.3333333333333) internal successors, (1426), 3 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:08,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 495.0) internal successors, (1980), 4 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:08,537 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 495.0) internal successors, (1980), 4 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:08,537 INFO L186 Difference]: Start difference. First operand has 457 places, 475 transitions, 1061 flow. Second operand 3 states and 1426 transitions. [2022-07-19 21:15:08,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 479 transitions, 1095 flow [2022-07-19 21:15:08,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 479 transitions, 1086 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-07-19 21:15:08,546 INFO L242 Difference]: Finished difference. Result has 458 places, 475 transitions, 1058 flow [2022-07-19 21:15:08,547 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=1046, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1058, PETRI_PLACES=458, PETRI_TRANSITIONS=475} [2022-07-19 21:15:08,548 INFO L279 CegarLoopForPetriNet]: 448 programPoint places, 10 predicate places. [2022-07-19 21:15:08,548 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 475 transitions, 1058 flow [2022-07-19 21:15:08,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 471.3333333333333) internal successors, (1414), 3 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:08,549 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:15:08,549 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:15:08,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:15:08,549 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-19 21:15:08,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:15:08,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1378553318, now seen corresponding path program 1 times [2022-07-19 21:15:08,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:15:08,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690386613] [2022-07-19 21:15:08,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:15:08,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:15:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:15:08,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:15:08,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:15:08,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690386613] [2022-07-19 21:15:08,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690386613] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:15:08,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:15:08,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-19 21:15:08,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691285334] [2022-07-19 21:15:08,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:15:08,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-19 21:15:08,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:15:08,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-19 21:15:08,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-07-19 21:15:08,865 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 495 [2022-07-19 21:15:08,869 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 475 transitions, 1058 flow. Second operand has 19 states, 19 states have (on average 327.36842105263156) internal successors, (6220), 19 states have internal predecessors, (6220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:08,869 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:15:08,869 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 495 [2022-07-19 21:15:08,869 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:15:12,824 INFO L129 PetriNetUnfolder]: 5804/22022 cut-off events. [2022-07-19 21:15:12,825 INFO L130 PetriNetUnfolder]: For 413/413 co-relation queries the response was YES. [2022-07-19 21:15:12,857 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33493 conditions, 22022 events. 5804/22022 cut-off events. For 413/413 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 209971 event pairs, 1163 based on Foata normal form. 0/21102 useless extension candidates. Maximal degree in co-relation 17192. Up to 5186 conditions per place. [2022-07-19 21:15:12,907 INFO L132 encePairwiseOnDemand]: 463/495 looper letters, 343 selfloop transitions, 44 changer transitions 0/707 dead transitions. [2022-07-19 21:15:12,907 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 707 transitions, 2305 flow [2022-07-19 21:15:12,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:15:12,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:15:12,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 7537 transitions. [2022-07-19 21:15:12,922 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6921028466483012 [2022-07-19 21:15:12,922 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 7537 transitions. [2022-07-19 21:15:12,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 7537 transitions. [2022-07-19 21:15:12,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:15:12,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 7537 transitions. [2022-07-19 21:15:12,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 342.59090909090907) internal successors, (7537), 22 states have internal predecessors, (7537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:12,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 495.0) internal successors, (11385), 23 states have internal predecessors, (11385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:12,953 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 495.0) internal successors, (11385), 23 states have internal predecessors, (11385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:12,954 INFO L186 Difference]: Start difference. First operand has 458 places, 475 transitions, 1058 flow. Second operand 22 states and 7537 transitions. [2022-07-19 21:15:12,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 707 transitions, 2305 flow [2022-07-19 21:15:12,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 707 transitions, 2303 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:15:12,967 INFO L242 Difference]: Finished difference. Result has 486 places, 507 transitions, 1296 flow [2022-07-19 21:15:12,968 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=1056, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1296, PETRI_PLACES=486, PETRI_TRANSITIONS=507} [2022-07-19 21:15:12,969 INFO L279 CegarLoopForPetriNet]: 448 programPoint places, 38 predicate places. [2022-07-19 21:15:12,969 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 507 transitions, 1296 flow [2022-07-19 21:15:12,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 327.36842105263156) internal successors, (6220), 19 states have internal predecessors, (6220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:12,971 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:15:12,971 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:15:12,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:15:12,972 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-19 21:15:12,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:15:12,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1950405236, now seen corresponding path program 1 times [2022-07-19 21:15:12,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:15:12,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165979477] [2022-07-19 21:15:12,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:15:12,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:15:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:15:13,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:15:13,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:15:13,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165979477] [2022-07-19 21:15:13,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165979477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:15:13,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:15:13,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:15:13,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886946910] [2022-07-19 21:15:13,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:15:13,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:15:13,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:15:13,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:15:13,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:15:13,120 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 495 [2022-07-19 21:15:13,122 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 507 transitions, 1296 flow. Second operand has 5 states, 5 states have (on average 425.0) internal successors, (2125), 5 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:13,122 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:15:13,122 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 495 [2022-07-19 21:15:13,122 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:15:13,921 INFO L129 PetriNetUnfolder]: 275/5422 cut-off events. [2022-07-19 21:15:13,921 INFO L130 PetriNetUnfolder]: For 202/215 co-relation queries the response was YES. [2022-07-19 21:15:13,948 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6742 conditions, 5422 events. 275/5422 cut-off events. For 202/215 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 41399 event pairs, 2 based on Foata normal form. 5/5163 useless extension candidates. Maximal degree in co-relation 6543. Up to 354 conditions per place. [2022-07-19 21:15:13,960 INFO L132 encePairwiseOnDemand]: 472/495 looper letters, 76 selfloop transitions, 22 changer transitions 0/531 dead transitions. [2022-07-19 21:15:13,960 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 531 transitions, 1545 flow [2022-07-19 21:15:13,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:15:13,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:15:13,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2604 transitions. [2022-07-19 21:15:13,966 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8767676767676768 [2022-07-19 21:15:13,966 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2604 transitions. [2022-07-19 21:15:13,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2604 transitions. [2022-07-19 21:15:13,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:15:13,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2604 transitions. [2022-07-19 21:15:13,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 434.0) internal successors, (2604), 6 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:13,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 495.0) internal successors, (3465), 7 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:13,976 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 495.0) internal successors, (3465), 7 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:13,976 INFO L186 Difference]: Start difference. First operand has 486 places, 507 transitions, 1296 flow. Second operand 6 states and 2604 transitions. [2022-07-19 21:15:13,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 531 transitions, 1545 flow [2022-07-19 21:15:13,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 531 transitions, 1523 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-07-19 21:15:13,987 INFO L242 Difference]: Finished difference. Result has 484 places, 524 transitions, 1424 flow [2022-07-19 21:15:13,988 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=1274, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1424, PETRI_PLACES=484, PETRI_TRANSITIONS=524} [2022-07-19 21:15:13,989 INFO L279 CegarLoopForPetriNet]: 448 programPoint places, 36 predicate places. [2022-07-19 21:15:13,989 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 524 transitions, 1424 flow [2022-07-19 21:15:13,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 425.0) internal successors, (2125), 5 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:13,990 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:15:13,990 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:15:13,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:15:13,990 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-19 21:15:13,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:15:13,991 INFO L85 PathProgramCache]: Analyzing trace with hash 675793813, now seen corresponding path program 1 times [2022-07-19 21:15:13,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:15:13,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519453194] [2022-07-19 21:15:13,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:15:13,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:15:14,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:15:15,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:15:15,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:15:15,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519453194] [2022-07-19 21:15:15,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519453194] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:15:15,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:15:15,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-07-19 21:15:15,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385387927] [2022-07-19 21:15:15,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:15:15,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-07-19 21:15:15,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:15:15,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-07-19 21:15:15,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1342, Unknown=0, NotChecked=0, Total=1482 [2022-07-19 21:15:15,752 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 495 [2022-07-19 21:15:15,760 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 524 transitions, 1424 flow. Second operand has 39 states, 39 states have (on average 258.9230769230769) internal successors, (10098), 39 states have internal predecessors, (10098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:15,761 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:15:15,761 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 495 [2022-07-19 21:15:15,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:15:48,339 INFO L129 PetriNetUnfolder]: 25138/81198 cut-off events. [2022-07-19 21:15:48,340 INFO L130 PetriNetUnfolder]: For 11415/11427 co-relation queries the response was YES. [2022-07-19 21:15:48,603 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143144 conditions, 81198 events. 25138/81198 cut-off events. For 11415/11427 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 900943 event pairs, 3102 based on Foata normal form. 66/77909 useless extension candidates. Maximal degree in co-relation 138212. Up to 20921 conditions per place. [2022-07-19 21:15:48,827 INFO L132 encePairwiseOnDemand]: 424/495 looper letters, 1639 selfloop transitions, 312 changer transitions 0/2201 dead transitions. [2022-07-19 21:15:48,827 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 2201 transitions, 10567 flow [2022-07-19 21:15:48,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-07-19 21:15:48,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2022-07-19 21:15:48,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 25539 transitions. [2022-07-19 21:15:48,863 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5608036890645586 [2022-07-19 21:15:48,863 INFO L72 ComplementDD]: Start complementDD. Operand 92 states and 25539 transitions. [2022-07-19 21:15:48,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 92 states and 25539 transitions. [2022-07-19 21:15:48,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:15:48,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 92 states and 25539 transitions. [2022-07-19 21:15:48,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 93 states, 92 states have (on average 277.5978260869565) internal successors, (25539), 92 states have internal predecessors, (25539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:48,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 93 states, 93 states have (on average 495.0) internal successors, (46035), 93 states have internal predecessors, (46035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:48,980 INFO L81 ComplementDD]: Finished complementDD. Result has 93 states, 93 states have (on average 495.0) internal successors, (46035), 93 states have internal predecessors, (46035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:48,980 INFO L186 Difference]: Start difference. First operand has 484 places, 524 transitions, 1424 flow. Second operand 92 states and 25539 transitions. [2022-07-19 21:15:48,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 2201 transitions, 10567 flow [2022-07-19 21:15:49,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 2201 transitions, 10508 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-19 21:15:49,078 INFO L242 Difference]: Finished difference. Result has 628 places, 810 transitions, 3908 flow [2022-07-19 21:15:49,079 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=92, PETRI_FLOW=3908, PETRI_PLACES=628, PETRI_TRANSITIONS=810} [2022-07-19 21:15:49,080 INFO L279 CegarLoopForPetriNet]: 448 programPoint places, 180 predicate places. [2022-07-19 21:15:49,080 INFO L495 AbstractCegarLoop]: Abstraction has has 628 places, 810 transitions, 3908 flow [2022-07-19 21:15:49,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 258.9230769230769) internal successors, (10098), 39 states have internal predecessors, (10098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:49,082 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:15:49,082 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:15:49,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:15:49,083 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-19 21:15:49,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:15:49,084 INFO L85 PathProgramCache]: Analyzing trace with hash 31416169, now seen corresponding path program 2 times [2022-07-19 21:15:49,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:15:49,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433902907] [2022-07-19 21:15:49,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:15:49,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:15:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:15:49,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:15:49,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:15:49,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433902907] [2022-07-19 21:15:49,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433902907] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:15:49,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:15:49,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-19 21:15:49,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807598018] [2022-07-19 21:15:49,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:15:49,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 21:15:49,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:15:49,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 21:15:49,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:15:49,762 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 495 [2022-07-19 21:15:49,766 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 628 places, 810 transitions, 3908 flow. Second operand has 26 states, 26 states have (on average 285.3076923076923) internal successors, (7418), 26 states have internal predecessors, (7418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:15:49,766 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:15:49,766 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 495 [2022-07-19 21:15:49,766 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:16:16,095 INFO L129 PetriNetUnfolder]: 23538/86443 cut-off events. [2022-07-19 21:16:16,096 INFO L130 PetriNetUnfolder]: For 114746/115092 co-relation queries the response was YES. [2022-07-19 21:16:17,812 INFO L84 FinitePrefix]: Finished finitePrefix Result has 199617 conditions, 86443 events. 23538/86443 cut-off events. For 114746/115092 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 1025538 event pairs, 1304 based on Foata normal form. 306/83842 useless extension candidates. Maximal degree in co-relation 196987. Up to 13994 conditions per place. [2022-07-19 21:16:18,017 INFO L132 encePairwiseOnDemand]: 416/495 looper letters, 1373 selfloop transitions, 528 changer transitions 0/2217 dead transitions. [2022-07-19 21:16:18,017 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 695 places, 2217 transitions, 14068 flow [2022-07-19 21:16:18,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-07-19 21:16:18,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2022-07-19 21:16:18,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 21040 transitions. [2022-07-19 21:16:18,035 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6160152247108769 [2022-07-19 21:16:18,035 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 21040 transitions. [2022-07-19 21:16:18,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 21040 transitions. [2022-07-19 21:16:18,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:16:18,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 21040 transitions. [2022-07-19 21:16:18,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 304.92753623188406) internal successors, (21040), 69 states have internal predecessors, (21040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:16:18,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 495.0) internal successors, (34650), 70 states have internal predecessors, (34650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:16:18,104 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 495.0) internal successors, (34650), 70 states have internal predecessors, (34650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:16:18,105 INFO L186 Difference]: Start difference. First operand has 628 places, 810 transitions, 3908 flow. Second operand 69 states and 21040 transitions. [2022-07-19 21:16:18,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 695 places, 2217 transitions, 14068 flow [2022-07-19 21:16:18,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 672 places, 2217 transitions, 13878 flow, removed 72 selfloop flow, removed 23 redundant places. [2022-07-19 21:16:18,781 INFO L242 Difference]: Finished difference. Result has 714 places, 1223 transitions, 8142 flow [2022-07-19 21:16:18,782 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=3344, PETRI_DIFFERENCE_MINUEND_PLACES=604, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=8142, PETRI_PLACES=714, PETRI_TRANSITIONS=1223} [2022-07-19 21:16:18,783 INFO L279 CegarLoopForPetriNet]: 448 programPoint places, 266 predicate places. [2022-07-19 21:16:18,783 INFO L495 AbstractCegarLoop]: Abstraction has has 714 places, 1223 transitions, 8142 flow [2022-07-19 21:16:18,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 285.3076923076923) internal successors, (7418), 26 states have internal predecessors, (7418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:16:18,784 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:16:18,785 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:16:18,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:16:18,785 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-19 21:16:18,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:16:18,786 INFO L85 PathProgramCache]: Analyzing trace with hash 602997045, now seen corresponding path program 3 times [2022-07-19 21:16:18,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:16:18,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099716675] [2022-07-19 21:16:18,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:16:18,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:16:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:16:20,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:16:20,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:16:20,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099716675] [2022-07-19 21:16:20,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099716675] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:16:20,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:16:20,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-07-19 21:16:20,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201847526] [2022-07-19 21:16:20,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:16:20,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-19 21:16:20,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:16:20,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-19 21:16:20,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1206, Unknown=0, NotChecked=0, Total=1332 [2022-07-19 21:16:20,399 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 495 [2022-07-19 21:16:20,404 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 714 places, 1223 transitions, 8142 flow. Second operand has 37 states, 37 states have (on average 272.86486486486484) internal successors, (10096), 37 states have internal predecessors, (10096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:16:20,404 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:16:20,404 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 495 [2022-07-19 21:16:20,404 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand