./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-divine/barrier_3t.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-divine/barrier_3t.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 116240ce9d1e33454ba4eae840c2d7b67606f3cd4ffa1a06798f06dcbc1241fc --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:13:00,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:13:00,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:13:00,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:13:00,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:13:00,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:13:00,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:13:00,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:13:00,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:13:00,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:13:00,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:13:00,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:13:00,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:13:00,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:13:00,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:13:00,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:13:00,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:13:00,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:13:00,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:13:00,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:13:00,748 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:13:00,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:13:00,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:13:00,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:13:00,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:13:00,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:13:00,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:13:00,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:13:00,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:13:00,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:13:00,755 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:13:00,755 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:13:00,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:13:00,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:13:00,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:13:00,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:13:00,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:13:00,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:13:00,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:13:00,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:13:00,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:13:00,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:13:00,760 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:13:00,776 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:13:00,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:13:00,777 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:13:00,777 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:13:00,777 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:13:00,777 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:13:00,778 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:13:00,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:13:00,778 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:13:00,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:13:00,779 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:13:00,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:13:00,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:13:00,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:13:00,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:13:00,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:13:00,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:13:00,780 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:13:00,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:13:00,780 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:13:00,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:13:00,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:13:00,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:13:00,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:13:00,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:13:00,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:13:00,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:13:00,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:13:00,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:13:00,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:13:00,782 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:13:00,782 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:13:00,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:13:00,782 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 116240ce9d1e33454ba4eae840c2d7b67606f3cd4ffa1a06798f06dcbc1241fc [2022-07-12 10:13:00,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:13:00,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:13:00,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:13:00,995 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:13:00,996 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:13:00,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/barrier_3t.i [2022-07-12 10:13:01,037 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7678daf3d/991bd9a79f434cf197732732a4c129c2/FLAG57e82bcaf [2022-07-12 10:13:01,463 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:13:01,464 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_3t.i [2022-07-12 10:13:01,473 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7678daf3d/991bd9a79f434cf197732732a4c129c2/FLAG57e82bcaf [2022-07-12 10:13:01,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7678daf3d/991bd9a79f434cf197732732a4c129c2 [2022-07-12 10:13:01,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:13:01,490 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:13:01,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:13:01,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:13:01,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:13:01,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:13:01" (1/1) ... [2022-07-12 10:13:01,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b43c02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:01, skipping insertion in model container [2022-07-12 10:13:01,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:13:01" (1/1) ... [2022-07-12 10:13:01,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:13:01,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:13:01,605 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-12 10:13:01,692 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/barrier_3t.i[30484,30497] [2022-07-12 10:13:01,720 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/barrier_3t.i[31858,31871] [2022-07-12 10:13:01,721 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/barrier_3t.i[31909,31922] [2022-07-12 10:13:01,723 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/barrier_3t.i[32058,32071] [2022-07-12 10:13:01,724 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/barrier_3t.i[32135,32148] [2022-07-12 10:13:01,725 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/barrier_3t.i[32182,32195] [2022-07-12 10:13:01,728 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/barrier_3t.i[32291,32304] [2022-07-12 10:13:01,729 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/barrier_3t.i[32410,32423] [2022-07-12 10:13:01,731 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/barrier_3t.i[32458,32471] [2022-07-12 10:13:01,732 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/barrier_3t.i[32535,32548] [2022-07-12 10:13:01,735 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/barrier_3t.i[32661,32674] [2022-07-12 10:13:01,742 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/barrier_3t.i[33244,33257] [2022-07-12 10:13:01,745 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/barrier_3t.i[33321,33334] [2022-07-12 10:13:01,746 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:13:01,755 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:13:01,769 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-12 10:13:01,779 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/barrier_3t.i[30484,30497] [2022-07-12 10:13:01,783 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/barrier_3t.i[31858,31871] [2022-07-12 10:13:01,784 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/barrier_3t.i[31909,31922] [2022-07-12 10:13:01,785 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/barrier_3t.i[32058,32071] [2022-07-12 10:13:01,785 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/barrier_3t.i[32135,32148] [2022-07-12 10:13:01,786 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/barrier_3t.i[32182,32195] [2022-07-12 10:13:01,786 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/barrier_3t.i[32291,32304] [2022-07-12 10:13:01,788 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/barrier_3t.i[32410,32423] [2022-07-12 10:13:01,789 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/barrier_3t.i[32458,32471] [2022-07-12 10:13:01,790 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/barrier_3t.i[32535,32548] [2022-07-12 10:13:01,791 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/barrier_3t.i[32661,32674] [2022-07-12 10:13:01,797 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/barrier_3t.i[33244,33257] [2022-07-12 10:13:01,797 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/barrier_3t.i[33321,33334] [2022-07-12 10:13:01,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:13:01,826 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:13:01,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:01 WrapperNode [2022-07-12 10:13:01,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:13:01,827 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:13:01,827 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:13:01,827 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:13:01,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:01" (1/1) ... [2022-07-12 10:13:01,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:01" (1/1) ... [2022-07-12 10:13:01,935 INFO L137 Inliner]: procedures = 174, calls = 83, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 526 [2022-07-12 10:13:01,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:13:01,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:13:01,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:13:01,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:13:01,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:01" (1/1) ... [2022-07-12 10:13:01,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:01" (1/1) ... [2022-07-12 10:13:01,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:01" (1/1) ... [2022-07-12 10:13:01,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:01" (1/1) ... [2022-07-12 10:13:01,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:01" (1/1) ... [2022-07-12 10:13:01,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:01" (1/1) ... [2022-07-12 10:13:01,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:01" (1/1) ... [2022-07-12 10:13:01,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:13:01,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:13:01,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:13:01,969 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:13:01,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:01" (1/1) ... [2022-07-12 10:13:01,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:13:01,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:13:01,998 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:13:02,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:13:02,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:13:02,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:13:02,035 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-12 10:13:02,035 INFO L130 BoogieDeclarations]: Found specification of procedure worker_fn [2022-07-12 10:13:02,035 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_fn [2022-07-12 10:13:02,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:13:02,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 10:13:02,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:13:02,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 10:13:02,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:13:02,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:13:02,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:13:02,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:13:02,037 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:13:02,135 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:13:02,137 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:13:02,686 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:13:02,699 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:13:02,701 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2022-07-12 10:13:02,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:13:02 BoogieIcfgContainer [2022-07-12 10:13:02,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:13:02,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:13:02,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:13:02,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:13:02,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:13:01" (1/3) ... [2022-07-12 10:13:02,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e3956d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:13:02, skipping insertion in model container [2022-07-12 10:13:02,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:13:01" (2/3) ... [2022-07-12 10:13:02,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e3956d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:13:02, skipping insertion in model container [2022-07-12 10:13:02,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:13:02" (3/3) ... [2022-07-12 10:13:02,718 INFO L111 eAbstractionObserver]: Analyzing ICFG barrier_3t.i [2022-07-12 10:13:02,725 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:13:02,731 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:13:02,732 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2022-07-12 10:13:02,732 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:13:02,798 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-12 10:13:02,826 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 519 places, 586 transitions, 1180 flow [2022-07-12 10:13:03,026 INFO L129 PetriNetUnfolder]: 106/863 cut-off events. [2022-07-12 10:13:03,026 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-12 10:13:03,040 INFO L84 FinitePrefix]: Finished finitePrefix Result has 869 conditions, 863 events. 106/863 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 3081 event pairs, 0 based on Foata normal form. 0/719 useless extension candidates. Maximal degree in co-relation 512. Up to 4 conditions per place. [2022-07-12 10:13:03,041 INFO L82 GeneralOperation]: Start removeDead. Operand has 519 places, 586 transitions, 1180 flow [2022-07-12 10:13:03,056 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 519 places, 586 transitions, 1180 flow [2022-07-12 10:13:03,074 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:13:03,078 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@49e255c1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@52c85dc0 [2022-07-12 10:13:03,078 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2022-07-12 10:13:03,083 INFO L129 PetriNetUnfolder]: 3/59 cut-off events. [2022-07-12 10:13:03,083 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:13:03,084 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:03,084 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] [2022-07-12 10:13:03,084 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2022-07-12 10:13:03,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:03,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1596734137, now seen corresponding path program 1 times [2022-07-12 10:13:03,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:03,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779523605] [2022-07-12 10:13:03,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:03,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:03,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:03,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:03,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:03,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779523605] [2022-07-12 10:13:03,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779523605] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:13:03,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:13:03,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:13:03,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512629677] [2022-07-12 10:13:03,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:13:03,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:13:03,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:03,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:13:03,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:13:03,315 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 532 out of 586 [2022-07-12 10:13:03,319 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 586 transitions, 1180 flow. Second operand has 3 states, 3 states have (on average 533.0) internal successors, (1599), 3 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:03,319 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:03,319 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 532 of 586 [2022-07-12 10:13:03,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:13:03,501 INFO L129 PetriNetUnfolder]: 40/803 cut-off events. [2022-07-12 10:13:03,501 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-12 10:13:03,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 827 conditions, 803 events. 40/803 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2919 event pairs, 0 based on Foata normal form. 65/790 useless extension candidates. Maximal degree in co-relation 473. Up to 12 conditions per place. [2022-07-12 10:13:03,513 INFO L132 encePairwiseOnDemand]: 540/586 looper letters, 15 selfloop transitions, 2 changer transitions 0/549 dead transitions. [2022-07-12 10:13:03,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 549 transitions, 1140 flow [2022-07-12 10:13:03,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:13:03,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:13:03,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1658 transitions. [2022-07-12 10:13:03,539 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9431171786120591 [2022-07-12 10:13:03,540 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1658 transitions. [2022-07-12 10:13:03,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1658 transitions. [2022-07-12 10:13:03,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:13:03,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1658 transitions. [2022-07-12 10:13:03,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 552.6666666666666) internal successors, (1658), 3 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:03,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:03,562 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:03,563 INFO L186 Difference]: Start difference. First operand has 519 places, 586 transitions, 1180 flow. Second operand 3 states and 1658 transitions. [2022-07-12 10:13:03,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 549 transitions, 1140 flow [2022-07-12 10:13:03,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 549 transitions, 1140 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:13:03,583 INFO L242 Difference]: Finished difference. Result has 522 places, 544 transitions, 1106 flow [2022-07-12 10:13:03,585 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1106, PETRI_PLACES=522, PETRI_TRANSITIONS=544} [2022-07-12 10:13:03,589 INFO L279 CegarLoopForPetriNet]: 519 programPoint places, 3 predicate places. [2022-07-12 10:13:03,590 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 544 transitions, 1106 flow [2022-07-12 10:13:03,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 533.0) internal successors, (1599), 3 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:03,591 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:03,591 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] [2022-07-12 10:13:03,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:13:03,595 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2022-07-12 10:13:03,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:03,596 INFO L85 PathProgramCache]: Analyzing trace with hash -95295206, now seen corresponding path program 1 times [2022-07-12 10:13:03,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:03,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586298896] [2022-07-12 10:13:03,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:03,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:03,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:03,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:03,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586298896] [2022-07-12 10:13:03,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586298896] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:13:03,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592769115] [2022-07-12 10:13:03,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:03,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:13:03,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:13:03,678 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:13:03,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:13:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:03,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:13:03,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:13:03,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:03,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:13:03,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:03,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592769115] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:13:03,876 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:13:03,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-07-12 10:13:03,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351413018] [2022-07-12 10:13:03,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:13:03,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:13:03,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:03,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:13:03,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:13:03,882 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 532 out of 586 [2022-07-12 10:13:03,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 544 transitions, 1106 flow. Second operand has 6 states, 6 states have (on average 536.0) internal successors, (3216), 6 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:03,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:03,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 532 of 586 [2022-07-12 10:13:03,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:13:04,057 INFO L129 PetriNetUnfolder]: 40/812 cut-off events. [2022-07-12 10:13:04,057 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-07-12 10:13:04,064 INFO L84 FinitePrefix]: Finished finitePrefix Result has 851 conditions, 812 events. 40/812 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2910 event pairs, 0 based on Foata normal form. 2/737 useless extension candidates. Maximal degree in co-relation 788. Up to 7 conditions per place. [2022-07-12 10:13:04,068 INFO L132 encePairwiseOnDemand]: 582/586 looper letters, 19 selfloop transitions, 5 changer transitions 0/556 dead transitions. [2022-07-12 10:13:04,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 556 transitions, 1180 flow [2022-07-12 10:13:04,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:13:04,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:13:04,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2686 transitions. [2022-07-12 10:13:04,074 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9167235494880546 [2022-07-12 10:13:04,074 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2686 transitions. [2022-07-12 10:13:04,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2686 transitions. [2022-07-12 10:13:04,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:13:04,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2686 transitions. [2022-07-12 10:13:04,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 537.2) internal successors, (2686), 5 states have internal predecessors, (2686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:04,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 586.0) internal successors, (3516), 6 states have internal predecessors, (3516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:04,084 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 586.0) internal successors, (3516), 6 states have internal predecessors, (3516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:04,084 INFO L186 Difference]: Start difference. First operand has 522 places, 544 transitions, 1106 flow. Second operand 5 states and 2686 transitions. [2022-07-12 10:13:04,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 556 transitions, 1180 flow [2022-07-12 10:13:04,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 556 transitions, 1178 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:13:04,092 INFO L242 Difference]: Finished difference. Result has 528 places, 546 transitions, 1134 flow [2022-07-12 10:13:04,092 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1134, PETRI_PLACES=528, PETRI_TRANSITIONS=546} [2022-07-12 10:13:04,093 INFO L279 CegarLoopForPetriNet]: 519 programPoint places, 9 predicate places. [2022-07-12 10:13:04,094 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 546 transitions, 1134 flow [2022-07-12 10:13:04,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 536.0) internal successors, (3216), 6 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:04,095 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:04,097 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:13:04,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 10:13:04,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:13:04,299 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2022-07-12 10:13:04,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:04,301 INFO L85 PathProgramCache]: Analyzing trace with hash -215230342, now seen corresponding path program 2 times [2022-07-12 10:13:04,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:04,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094410441] [2022-07-12 10:13:04,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:04,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:04,380 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 10:13:04,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:04,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094410441] [2022-07-12 10:13:04,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094410441] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:13:04,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:13:04,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:13:04,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053234881] [2022-07-12 10:13:04,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:13:04,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:13:04,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:04,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:13:04,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:13:04,385 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 535 out of 586 [2022-07-12 10:13:04,387 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 546 transitions, 1134 flow. Second operand has 4 states, 4 states have (on average 536.0) internal successors, (2144), 4 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:04,387 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:04,387 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 535 of 586 [2022-07-12 10:13:04,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:13:04,504 INFO L129 PetriNetUnfolder]: 40/810 cut-off events. [2022-07-12 10:13:04,504 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-07-12 10:13:04,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 847 conditions, 810 events. 40/810 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2907 event pairs, 0 based on Foata normal form. 0/734 useless extension candidates. Maximal degree in co-relation 762. Up to 5 conditions per place. [2022-07-12 10:13:04,518 INFO L132 encePairwiseOnDemand]: 583/586 looper letters, 5 selfloop transitions, 2 changer transitions 0/544 dead transitions. [2022-07-12 10:13:04,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 544 transitions, 1144 flow [2022-07-12 10:13:04,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:13:04,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:13:04,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2148 transitions. [2022-07-12 10:13:04,521 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9163822525597269 [2022-07-12 10:13:04,522 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2148 transitions. [2022-07-12 10:13:04,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2148 transitions. [2022-07-12 10:13:04,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:13:04,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2148 transitions. [2022-07-12 10:13:04,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 537.0) internal successors, (2148), 4 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:04,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 586.0) internal successors, (2930), 5 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:04,530 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 586.0) internal successors, (2930), 5 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:04,531 INFO L186 Difference]: Start difference. First operand has 528 places, 546 transitions, 1134 flow. Second operand 4 states and 2148 transitions. [2022-07-12 10:13:04,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 544 transitions, 1144 flow [2022-07-12 10:13:04,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 544 transitions, 1138 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-12 10:13:04,539 INFO L242 Difference]: Finished difference. Result has 528 places, 544 transitions, 1128 flow [2022-07-12 10:13:04,540 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1128, PETRI_PLACES=528, PETRI_TRANSITIONS=544} [2022-07-12 10:13:04,540 INFO L279 CegarLoopForPetriNet]: 519 programPoint places, 9 predicate places. [2022-07-12 10:13:04,540 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 544 transitions, 1128 flow [2022-07-12 10:13:04,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 536.0) internal successors, (2144), 4 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:04,542 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:04,542 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:13:04,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:13:04,542 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2022-07-12 10:13:04,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:04,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1540121218, now seen corresponding path program 1 times [2022-07-12 10:13:04,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:04,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299400251] [2022-07-12 10:13:04,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:04,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:13:04,594 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 10:13:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:13:04,695 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 10:13:04,695 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 10:13:04,696 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (33 of 34 remaining) [2022-07-12 10:13:04,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (32 of 34 remaining) [2022-07-12 10:13:04,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (31 of 34 remaining) [2022-07-12 10:13:04,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (30 of 34 remaining) [2022-07-12 10:13:04,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (29 of 34 remaining) [2022-07-12 10:13:04,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (28 of 34 remaining) [2022-07-12 10:13:04,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (27 of 34 remaining) [2022-07-12 10:13:04,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (26 of 34 remaining) [2022-07-12 10:13:04,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (25 of 34 remaining) [2022-07-12 10:13:04,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (24 of 34 remaining) [2022-07-12 10:13:04,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (23 of 34 remaining) [2022-07-12 10:13:04,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (22 of 34 remaining) [2022-07-12 10:13:04,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION (21 of 34 remaining) [2022-07-12 10:13:04,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION (20 of 34 remaining) [2022-07-12 10:13:04,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (19 of 34 remaining) [2022-07-12 10:13:04,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr1ASSERT_VIOLATIONERROR_FUNCTION (18 of 34 remaining) [2022-07-12 10:13:04,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr3ASSERT_VIOLATIONERROR_FUNCTION (17 of 34 remaining) [2022-07-12 10:13:04,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr2ASSERT_VIOLATIONERROR_FUNCTION (16 of 34 remaining) [2022-07-12 10:13:04,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr4ASSERT_VIOLATIONERROR_FUNCTION (15 of 34 remaining) [2022-07-12 10:13:04,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr5ASSERT_VIOLATIONERROR_FUNCTION (14 of 34 remaining) [2022-07-12 10:13:04,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr8ASSERT_VIOLATIONERROR_FUNCTION (13 of 34 remaining) [2022-07-12 10:13:04,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr6ASSERT_VIOLATIONERROR_FUNCTION (12 of 34 remaining) [2022-07-12 10:13:04,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr9ASSERT_VIOLATIONERROR_FUNCTION (11 of 34 remaining) [2022-07-12 10:13:04,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr7ASSERT_VIOLATIONERROR_FUNCTION (10 of 34 remaining) [2022-07-12 10:13:04,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (9 of 34 remaining) [2022-07-12 10:13:04,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr1ASSERT_VIOLATIONERROR_FUNCTION (8 of 34 remaining) [2022-07-12 10:13:04,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr3ASSERT_VIOLATIONERROR_FUNCTION (7 of 34 remaining) [2022-07-12 10:13:04,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr2ASSERT_VIOLATIONERROR_FUNCTION (6 of 34 remaining) [2022-07-12 10:13:04,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 34 remaining) [2022-07-12 10:13:04,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 34 remaining) [2022-07-12 10:13:04,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr8ASSERT_VIOLATIONERROR_FUNCTION (3 of 34 remaining) [2022-07-12 10:13:04,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr6ASSERT_VIOLATIONERROR_FUNCTION (2 of 34 remaining) [2022-07-12 10:13:04,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr9ASSERT_VIOLATIONERROR_FUNCTION (1 of 34 remaining) [2022-07-12 10:13:04,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr7ASSERT_VIOLATIONERROR_FUNCTION (0 of 34 remaining) [2022-07-12 10:13:04,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:13:04,707 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-07-12 10:13:04,709 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-12 10:13:04,709 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-12 10:13:04,803 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-12 10:13:04,807 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 722 places, 818 transitions, 1654 flow [2022-07-12 10:13:05,087 INFO L129 PetriNetUnfolder]: 179/1421 cut-off events. [2022-07-12 10:13:05,088 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-12 10:13:05,126 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1435 conditions, 1421 events. 179/1421 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 6684 event pairs, 0 based on Foata normal form. 0/1179 useless extension candidates. Maximal degree in co-relation 865. Up to 8 conditions per place. [2022-07-12 10:13:05,126 INFO L82 GeneralOperation]: Start removeDead. Operand has 722 places, 818 transitions, 1654 flow [2022-07-12 10:13:05,174 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 722 places, 818 transitions, 1654 flow [2022-07-12 10:13:05,175 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:13:05,176 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@49e255c1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@52c85dc0 [2022-07-12 10:13:05,176 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2022-07-12 10:13:05,179 INFO L129 PetriNetUnfolder]: 3/58 cut-off events. [2022-07-12 10:13:05,179 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:13:05,179 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:05,179 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] [2022-07-12 10:13:05,179 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2022-07-12 10:13:05,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:05,179 INFO L85 PathProgramCache]: Analyzing trace with hash -997182855, now seen corresponding path program 1 times [2022-07-12 10:13:05,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:05,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38503452] [2022-07-12 10:13:05,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:05,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:05,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:05,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:05,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38503452] [2022-07-12 10:13:05,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38503452] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:13:05,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:13:05,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:13:05,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480725313] [2022-07-12 10:13:05,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:13:05,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:13:05,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:05,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:13:05,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:13:05,228 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 744 out of 818 [2022-07-12 10:13:05,230 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 722 places, 818 transitions, 1654 flow. Second operand has 3 states, 3 states have (on average 745.0) internal successors, (2235), 3 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:05,230 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:05,230 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 744 of 818 [2022-07-12 10:13:05,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:13:05,526 INFO L129 PetriNetUnfolder]: 68/1316 cut-off events. [2022-07-12 10:13:05,526 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-07-12 10:13:05,553 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1352 conditions, 1316 events. 68/1316 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 6420 event pairs, 0 based on Foata normal form. 147/1332 useless extension candidates. Maximal degree in co-relation 822. Up to 16 conditions per place. [2022-07-12 10:13:05,564 INFO L132 encePairwiseOnDemand]: 754/818 looper letters, 17 selfloop transitions, 2 changer transitions 0/763 dead transitions. [2022-07-12 10:13:05,564 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 724 places, 763 transitions, 1582 flow [2022-07-12 10:13:05,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:13:05,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:13:05,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2314 transitions. [2022-07-12 10:13:05,568 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9429502852485737 [2022-07-12 10:13:05,568 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2314 transitions. [2022-07-12 10:13:05,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2314 transitions. [2022-07-12 10:13:05,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:13:05,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2314 transitions. [2022-07-12 10:13:05,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 771.3333333333334) internal successors, (2314), 3 states have internal predecessors, (2314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:05,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 818.0) internal successors, (3272), 4 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:05,577 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 818.0) internal successors, (3272), 4 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:05,578 INFO L186 Difference]: Start difference. First operand has 722 places, 818 transitions, 1654 flow. Second operand 3 states and 2314 transitions. [2022-07-12 10:13:05,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 724 places, 763 transitions, 1582 flow [2022-07-12 10:13:05,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 724 places, 763 transitions, 1582 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:13:05,586 INFO L242 Difference]: Finished difference. Result has 725 places, 758 transitions, 1544 flow [2022-07-12 10:13:05,587 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=818, PETRI_DIFFERENCE_MINUEND_FLOW=1532, PETRI_DIFFERENCE_MINUEND_PLACES=722, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=755, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1544, PETRI_PLACES=725, PETRI_TRANSITIONS=758} [2022-07-12 10:13:05,589 INFO L279 CegarLoopForPetriNet]: 722 programPoint places, 3 predicate places. [2022-07-12 10:13:05,589 INFO L495 AbstractCegarLoop]: Abstraction has has 725 places, 758 transitions, 1544 flow [2022-07-12 10:13:05,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 745.0) internal successors, (2235), 3 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:05,590 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:05,590 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:13:05,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:13:05,591 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2022-07-12 10:13:05,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:05,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1060665370, now seen corresponding path program 1 times [2022-07-12 10:13:05,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:05,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513246539] [2022-07-12 10:13:05,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:05,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:05,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:05,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:05,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513246539] [2022-07-12 10:13:05,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513246539] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:13:05,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936150584] [2022-07-12 10:13:05,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:05,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:13:05,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:13:05,648 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:13:05,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 10:13:05,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:05,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:13:05,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:13:05,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:05,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:13:05,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:13:05,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936150584] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:13:05,811 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:13:05,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-07-12 10:13:05,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024553613] [2022-07-12 10:13:05,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:13:05,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:13:05,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:05,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:13:05,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:13:05,817 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 744 out of 818 [2022-07-12 10:13:05,821 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 725 places, 758 transitions, 1544 flow. Second operand has 6 states, 6 states have (on average 748.0) internal successors, (4488), 6 states have internal predecessors, (4488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:05,821 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:05,821 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 744 of 818 [2022-07-12 10:13:05,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:13:06,129 INFO L129 PetriNetUnfolder]: 68/1325 cut-off events. [2022-07-12 10:13:06,130 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-07-12 10:13:06,159 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 1325 events. 68/1325 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 6410 event pairs, 0 based on Foata normal form. 2/1197 useless extension candidates. Maximal degree in co-relation 1312. Up to 10 conditions per place. [2022-07-12 10:13:06,168 INFO L132 encePairwiseOnDemand]: 814/818 looper letters, 21 selfloop transitions, 5 changer transitions 0/770 dead transitions. [2022-07-12 10:13:06,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 729 places, 770 transitions, 1622 flow [2022-07-12 10:13:06,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:13:06,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:13:06,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3748 transitions. [2022-07-12 10:13:06,174 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9163814180929095 [2022-07-12 10:13:06,174 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3748 transitions. [2022-07-12 10:13:06,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3748 transitions. [2022-07-12 10:13:06,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:13:06,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3748 transitions. [2022-07-12 10:13:06,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 749.6) internal successors, (3748), 5 states have internal predecessors, (3748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:06,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 818.0) internal successors, (4908), 6 states have internal predecessors, (4908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:06,200 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 818.0) internal successors, (4908), 6 states have internal predecessors, (4908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:06,200 INFO L186 Difference]: Start difference. First operand has 725 places, 758 transitions, 1544 flow. Second operand 5 states and 3748 transitions. [2022-07-12 10:13:06,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 729 places, 770 transitions, 1622 flow [2022-07-12 10:13:06,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 728 places, 770 transitions, 1620 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:13:06,211 INFO L242 Difference]: Finished difference. Result has 731 places, 760 transitions, 1572 flow [2022-07-12 10:13:06,212 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=818, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=724, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=754, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1572, PETRI_PLACES=731, PETRI_TRANSITIONS=760} [2022-07-12 10:13:06,215 INFO L279 CegarLoopForPetriNet]: 722 programPoint places, 9 predicate places. [2022-07-12 10:13:06,215 INFO L495 AbstractCegarLoop]: Abstraction has has 731 places, 760 transitions, 1572 flow [2022-07-12 10:13:06,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 748.0) internal successors, (4488), 6 states have internal predecessors, (4488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:06,216 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:06,217 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:13:06,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 10:13:06,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-12 10:13:06,431 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2022-07-12 10:13:06,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:06,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1485775674, now seen corresponding path program 2 times [2022-07-12 10:13:06,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:06,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218718546] [2022-07-12 10:13:06,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:06,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:06,481 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 10:13:06,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:06,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218718546] [2022-07-12 10:13:06,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218718546] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:13:06,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:13:06,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:13:06,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703898526] [2022-07-12 10:13:06,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:13:06,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:13:06,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:06,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:13:06,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:13:06,487 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 747 out of 818 [2022-07-12 10:13:06,489 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 731 places, 760 transitions, 1572 flow. Second operand has 4 states, 4 states have (on average 748.0) internal successors, (2992), 4 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:06,489 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:06,489 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 747 of 818 [2022-07-12 10:13:06,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:13:06,784 INFO L129 PetriNetUnfolder]: 68/1323 cut-off events. [2022-07-12 10:13:06,785 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-07-12 10:13:06,811 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1372 conditions, 1323 events. 68/1323 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 6407 event pairs, 0 based on Foata normal form. 0/1194 useless extension candidates. Maximal degree in co-relation 1286. Up to 9 conditions per place. [2022-07-12 10:13:06,818 INFO L132 encePairwiseOnDemand]: 815/818 looper letters, 7 selfloop transitions, 2 changer transitions 0/758 dead transitions. [2022-07-12 10:13:06,818 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 732 places, 758 transitions, 1586 flow [2022-07-12 10:13:06,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:13:06,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:13:06,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2998 transitions. [2022-07-12 10:13:06,823 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9162591687041565 [2022-07-12 10:13:06,823 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2998 transitions. [2022-07-12 10:13:06,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2998 transitions. [2022-07-12 10:13:06,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:13:06,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2998 transitions. [2022-07-12 10:13:06,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 749.5) internal successors, (2998), 4 states have internal predecessors, (2998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:06,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 818.0) internal successors, (4090), 5 states have internal predecessors, (4090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:06,833 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 818.0) internal successors, (4090), 5 states have internal predecessors, (4090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:06,833 INFO L186 Difference]: Start difference. First operand has 731 places, 760 transitions, 1572 flow. Second operand 4 states and 2998 transitions. [2022-07-12 10:13:06,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 732 places, 758 transitions, 1586 flow [2022-07-12 10:13:06,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 731 places, 758 transitions, 1580 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-12 10:13:06,842 INFO L242 Difference]: Finished difference. Result has 731 places, 758 transitions, 1566 flow [2022-07-12 10:13:06,844 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=818, PETRI_DIFFERENCE_MINUEND_FLOW=1562, PETRI_DIFFERENCE_MINUEND_PLACES=728, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=756, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1566, PETRI_PLACES=731, PETRI_TRANSITIONS=758} [2022-07-12 10:13:06,844 INFO L279 CegarLoopForPetriNet]: 722 programPoint places, 9 predicate places. [2022-07-12 10:13:06,844 INFO L495 AbstractCegarLoop]: Abstraction has has 731 places, 758 transitions, 1566 flow [2022-07-12 10:13:06,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 748.0) internal successors, (2992), 4 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:06,845 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:06,845 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:13:06,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:13:06,846 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2022-07-12 10:13:06,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:06,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1603753880, now seen corresponding path program 1 times [2022-07-12 10:13:06,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:06,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949503945] [2022-07-12 10:13:06,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:06,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:06,882 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 10:13:06,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:06,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949503945] [2022-07-12 10:13:06,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949503945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:13:06,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:13:06,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:13:06,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014062917] [2022-07-12 10:13:06,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:13:06,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:13:06,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:06,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:13:06,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:13:06,885 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 746 out of 818 [2022-07-12 10:13:06,887 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 731 places, 758 transitions, 1566 flow. Second operand has 3 states, 3 states have (on average 747.0) internal successors, (2241), 3 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:06,887 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:06,887 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 746 of 818 [2022-07-12 10:13:06,887 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:13:07,153 INFO L129 PetriNetUnfolder]: 55/1103 cut-off events. [2022-07-12 10:13:07,153 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-07-12 10:13:07,170 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1161 conditions, 1103 events. 55/1103 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 4598 event pairs, 0 based on Foata normal form. 0/997 useless extension candidates. Maximal degree in co-relation 1076. Up to 16 conditions per place. [2022-07-12 10:13:07,176 INFO L132 encePairwiseOnDemand]: 815/818 looper letters, 13 selfloop transitions, 2 changer transitions 0/762 dead transitions. [2022-07-12 10:13:07,176 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 733 places, 762 transitions, 1604 flow [2022-07-12 10:13:07,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:13:07,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:13:07,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2254 transitions. [2022-07-12 10:13:07,180 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9185004074979625 [2022-07-12 10:13:07,180 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2254 transitions. [2022-07-12 10:13:07,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2254 transitions. [2022-07-12 10:13:07,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:13:07,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2254 transitions. [2022-07-12 10:13:07,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 751.3333333333334) internal successors, (2254), 3 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:07,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 818.0) internal successors, (3272), 4 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:07,188 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 818.0) internal successors, (3272), 4 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:07,188 INFO L186 Difference]: Start difference. First operand has 731 places, 758 transitions, 1566 flow. Second operand 3 states and 2254 transitions. [2022-07-12 10:13:07,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 733 places, 762 transitions, 1604 flow [2022-07-12 10:13:07,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 731 places, 762 transitions, 1601 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:13:07,197 INFO L242 Difference]: Finished difference. Result has 732 places, 759 transitions, 1575 flow [2022-07-12 10:13:07,198 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=818, PETRI_DIFFERENCE_MINUEND_FLOW=1563, PETRI_DIFFERENCE_MINUEND_PLACES=729, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=756, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1575, PETRI_PLACES=732, PETRI_TRANSITIONS=759} [2022-07-12 10:13:07,198 INFO L279 CegarLoopForPetriNet]: 722 programPoint places, 10 predicate places. [2022-07-12 10:13:07,199 INFO L495 AbstractCegarLoop]: Abstraction has has 732 places, 759 transitions, 1575 flow [2022-07-12 10:13:07,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 747.0) internal successors, (2241), 3 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:07,199 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:13:07,200 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:13:07,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:13:07,200 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting worker_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2022-07-12 10:13:07,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:13:07,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1914924077, now seen corresponding path program 1 times [2022-07-12 10:13:07,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:13:07,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139925790] [2022-07-12 10:13:07,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:13:07,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:13:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:13:07,876 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 10:13:07,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:13:07,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139925790] [2022-07-12 10:13:07,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139925790] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:13:07,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:13:07,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-12 10:13:07,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260744699] [2022-07-12 10:13:07,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:13:07,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-12 10:13:07,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:13:07,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-12 10:13:07,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-07-12 10:13:07,884 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 566 out of 818 [2022-07-12 10:13:07,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 732 places, 759 transitions, 1575 flow. Second operand has 17 states, 17 states have (on average 568.9411764705883) internal successors, (9672), 17 states have internal predecessors, (9672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:13:07,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:13:07,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 566 of 818 [2022-07-12 10:13:07,890 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand