./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8 --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 c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 13:15:00,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:15:00,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:15:00,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:15:00,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:15:00,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:15:00,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:15:00,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:15:00,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:15:00,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:15:00,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:15:00,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:15:00,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:15:00,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:15:00,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:15:00,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:15:00,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:15:00,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:15:00,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:15:00,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:15:00,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:15:00,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:15:00,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:15:00,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:15:00,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:15:00,549 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:15:00,550 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:15:00,551 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:15:00,551 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:15:00,552 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:15:00,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:15:00,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:15:00,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:15:00,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:15:00,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:15:00,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:15:00,555 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:15:00,556 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:15:00,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:15:00,557 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:15:00,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:15:00,558 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 13:15:00,585 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:15:00,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:15:00,586 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:15:00,586 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:15:00,587 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:15:00,587 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:15:00,587 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:15:00,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:15:00,588 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:15:00,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:15:00,592 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:15:00,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:15:00,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:15:00,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:15:00,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:15:00,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:15:00,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:15:00,593 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:15:00,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:15:00,594 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:15:00,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:15:00,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:15:00,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:15:00,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:15:00,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:15:00,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:15:00,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:15:00,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:15:00,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:15:00,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:15:00,596 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:15:00,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:15:00,596 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:15:00,596 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:15:00,596 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:15:00,596 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 [2022-12-13 13:15:00,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:15:00,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:15:00,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:15:00,788 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:15:00,789 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:15:00,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2022-12-13 13:15:03,434 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:15:03,564 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:15:03,565 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2022-12-13 13:15:03,570 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/data/2be453cd7/ee98306b0b5240ce9064b8eb671e4ae3/FLAGc3b0693b3 [2022-12-13 13:15:03,581 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/data/2be453cd7/ee98306b0b5240ce9064b8eb671e4ae3 [2022-12-13 13:15:03,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:15:03,584 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:15:03,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:15:03,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:15:03,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:15:03,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:15:03" (1/1) ... [2022-12-13 13:15:03,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62385632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:15:03, skipping insertion in model container [2022-12-13 13:15:03,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:15:03" (1/1) ... [2022-12-13 13:15:03,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:15:03,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:15:03,716 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:15:03,718 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:15:03,719 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:15:03,721 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:15:03,722 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:15:03,723 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:15:03,723 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:15:03,724 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:15:03,725 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:15:03,726 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:15:03,733 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2022-12-13 13:15:03,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:15:03,747 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:15:03,757 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:15:03,758 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:15:03,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:15:03,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:15:03,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:15:03,761 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:15:03,761 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:15:03,762 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:15:03,763 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:15:03,763 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:15:03,768 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2022-12-13 13:15:03,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:15:03,782 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:15:03,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:15:03 WrapperNode [2022-12-13 13:15:03,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:15:03,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:15:03,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:15:03,784 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:15:03,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:15:03" (1/1) ... [2022-12-13 13:15:03,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:15:03" (1/1) ... [2022-12-13 13:15:03,815 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 257 [2022-12-13 13:15:03,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:15:03,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:15:03,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:15:03,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:15:03,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:15:03" (1/1) ... [2022-12-13 13:15:03,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:15:03" (1/1) ... [2022-12-13 13:15:03,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:15:03" (1/1) ... [2022-12-13 13:15:03,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:15:03" (1/1) ... [2022-12-13 13:15:03,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:15:03" (1/1) ... [2022-12-13 13:15:03,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:15:03" (1/1) ... [2022-12-13 13:15:03,835 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:15:03" (1/1) ... [2022-12-13 13:15:03,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:15:03" (1/1) ... [2022-12-13 13:15:03,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:15:03,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:15:03,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:15:03,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:15:03,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:15:03" (1/1) ... [2022-12-13 13:15:03,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:15:03,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:15:03,864 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:15:03,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:15:03,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:15:03,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:15:03,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:15:03,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 13:15:03,899 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 13:15:03,899 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 13:15:03,899 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 13:15:03,899 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 13:15:03,899 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 13:15:03,899 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 13:15:03,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:15:03,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 13:15:03,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 13:15:03,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 13:15:03,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:15:03,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:15:03,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:15:03,902 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 13:15:03,996 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:15:03,998 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:15:04,297 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:15:04,369 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:15:04,369 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-13 13:15:04,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:15:04 BoogieIcfgContainer [2022-12-13 13:15:04,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:15:04,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:15:04,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:15:04,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:15:04,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:15:03" (1/3) ... [2022-12-13 13:15:04,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37aba0d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:15:04, skipping insertion in model container [2022-12-13 13:15:04,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:15:03" (2/3) ... [2022-12-13 13:15:04,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37aba0d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:15:04, skipping insertion in model container [2022-12-13 13:15:04,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:15:04" (3/3) ... [2022-12-13 13:15:04,377 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2022-12-13 13:15:04,383 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 13:15:04,391 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:15:04,391 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 13:15:04,391 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 13:15:04,450 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 13:15:04,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 223 transitions, 470 flow [2022-12-13 13:15:04,563 INFO L130 PetriNetUnfolder]: 18/220 cut-off events. [2022-12-13 13:15:04,563 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 13:15:04,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 220 events. 18/220 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 126 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 180. Up to 3 conditions per place. [2022-12-13 13:15:04,568 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 223 transitions, 470 flow [2022-12-13 13:15:04,572 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 201 places, 209 transitions, 436 flow [2022-12-13 13:15:04,575 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 13:15:04,583 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 201 places, 209 transitions, 436 flow [2022-12-13 13:15:04,586 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 201 places, 209 transitions, 436 flow [2022-12-13 13:15:04,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 209 transitions, 436 flow [2022-12-13 13:15:04,618 INFO L130 PetriNetUnfolder]: 18/209 cut-off events. [2022-12-13 13:15:04,618 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 13:15:04,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 209 events. 18/209 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 125 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 180. Up to 3 conditions per place. [2022-12-13 13:15:04,620 INFO L119 LiptonReduction]: Number of co-enabled transitions 1880 [2022-12-13 13:15:11,674 INFO L134 LiptonReduction]: Checked pairs total: 2692 [2022-12-13 13:15:11,674 INFO L136 LiptonReduction]: Total number of compositions: 229 [2022-12-13 13:15:11,684 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:15:11,688 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@73983441, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:15:11,689 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-13 13:15:11,693 INFO L130 PetriNetUnfolder]: 6/27 cut-off events. [2022-12-13 13:15:11,693 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 13:15:11,693 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:15:11,694 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:15:11,694 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:15:11,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:15:11,698 INFO L85 PathProgramCache]: Analyzing trace with hash 765993513, now seen corresponding path program 1 times [2022-12-13 13:15:11,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:15:11,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42017964] [2022-12-13 13:15:11,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:15:11,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:15:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:11,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:15:11,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:15:11,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42017964] [2022-12-13 13:15:11,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42017964] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:15:11,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:15:11,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:15:11,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332303704] [2022-12-13 13:15:11,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:15:11,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 13:15:11,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:15:11,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 13:15:11,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:15:11,911 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 452 [2022-12-13 13:15:11,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 74 flow. Second operand has 2 states, 2 states have (on average 208.0) internal successors, (416), 2 states have internal predecessors, (416), 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) [2022-12-13 13:15:11,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:15:11,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 452 [2022-12-13 13:15:11,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:15:12,023 INFO L130 PetriNetUnfolder]: 323/460 cut-off events. [2022-12-13 13:15:12,023 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-12-13 13:15:12,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 460 events. 323/460 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1349 event pairs, 190 based on Foata normal form. 0/327 useless extension candidates. Maximal degree in co-relation 765. Up to 460 conditions per place. [2022-12-13 13:15:12,027 INFO L137 encePairwiseOnDemand]: 451/452 looper letters, 26 selfloop transitions, 0 changer transitions 0/27 dead transitions. [2022-12-13 13:15:12,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 124 flow [2022-12-13 13:15:12,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 13:15:12,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 13:15:12,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 423 transitions. [2022-12-13 13:15:12,041 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46792035398230086 [2022-12-13 13:15:12,041 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 423 transitions. [2022-12-13 13:15:12,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 423 transitions. [2022-12-13 13:15:12,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:15:12,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 423 transitions. [2022-12-13 13:15:12,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 211.5) internal successors, (423), 2 states have internal predecessors, (423), 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) [2022-12-13 13:15:12,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 452.0) internal successors, (1356), 3 states have internal predecessors, (1356), 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) [2022-12-13 13:15:12,052 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 452.0) internal successors, (1356), 3 states have internal predecessors, (1356), 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) [2022-12-13 13:15:12,053 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 74 flow. Second operand 2 states and 423 transitions. [2022-12-13 13:15:12,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 124 flow [2022-12-13 13:15:12,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 27 transitions, 112 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 13:15:12,057 INFO L231 Difference]: Finished difference. Result has 27 places, 27 transitions, 60 flow [2022-12-13 13:15:12,058 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=60, PETRI_PLACES=27, PETRI_TRANSITIONS=27} [2022-12-13 13:15:12,061 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, -5 predicate places. [2022-12-13 13:15:12,061 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 27 transitions, 60 flow [2022-12-13 13:15:12,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 208.0) internal successors, (416), 2 states have internal predecessors, (416), 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) [2022-12-13 13:15:12,062 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:15:12,062 INFO L209 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] [2022-12-13 13:15:12,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:15:12,062 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:15:12,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:15:12,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1386432238, now seen corresponding path program 1 times [2022-12-13 13:15:12,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:15:12,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51694239] [2022-12-13 13:15:12,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:15:12,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:15:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:12,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:15:12,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:15:12,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51694239] [2022-12-13 13:15:12,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51694239] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:15:12,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:15:12,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:15:12,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750780023] [2022-12-13 13:15:12,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:15:12,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:15:12,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:15:12,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:15:12,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:15:12,343 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 452 [2022-12-13 13:15:12,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 193.25) internal successors, (773), 4 states have internal predecessors, (773), 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) [2022-12-13 13:15:12,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:15:12,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 452 [2022-12-13 13:15:12,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:15:12,459 INFO L130 PetriNetUnfolder]: 339/498 cut-off events. [2022-12-13 13:15:12,459 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-13 13:15:12,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1017 conditions, 498 events. 339/498 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1529 event pairs, 201 based on Foata normal form. 26/385 useless extension candidates. Maximal degree in co-relation 1014. Up to 460 conditions per place. [2022-12-13 13:15:12,461 INFO L137 encePairwiseOnDemand]: 446/452 looper letters, 25 selfloop transitions, 2 changer transitions 13/41 dead transitions. [2022-12-13 13:15:12,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 41 transitions, 171 flow [2022-12-13 13:15:12,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:15:12,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:15:12,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 795 transitions. [2022-12-13 13:15:12,465 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.439712389380531 [2022-12-13 13:15:12,465 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 795 transitions. [2022-12-13 13:15:12,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 795 transitions. [2022-12-13 13:15:12,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:15:12,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 795 transitions. [2022-12-13 13:15:12,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 198.75) internal successors, (795), 4 states have internal predecessors, (795), 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) [2022-12-13 13:15:12,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 452.0) internal successors, (2260), 5 states have internal predecessors, (2260), 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) [2022-12-13 13:15:12,471 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 452.0) internal successors, (2260), 5 states have internal predecessors, (2260), 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) [2022-12-13 13:15:12,471 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 60 flow. Second operand 4 states and 795 transitions. [2022-12-13 13:15:12,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 41 transitions, 171 flow [2022-12-13 13:15:12,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 41 transitions, 171 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 13:15:12,472 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 78 flow [2022-12-13 13:15:12,472 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2022-12-13 13:15:12,472 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2022-12-13 13:15:12,472 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 78 flow [2022-12-13 13:15:12,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.25) internal successors, (773), 4 states have internal predecessors, (773), 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) [2022-12-13 13:15:12,473 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:15:12,473 INFO L209 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] [2022-12-13 13:15:12,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:15:12,473 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:15:12,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:15:12,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1459646870, now seen corresponding path program 1 times [2022-12-13 13:15:12,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:15:12,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958536416] [2022-12-13 13:15:12,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:15:12,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:15:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:12,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:15:12,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:15:12,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958536416] [2022-12-13 13:15:12,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958536416] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:15:12,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:15:12,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:15:12,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573079011] [2022-12-13 13:15:12,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:15:12,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:15:12,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:15:12,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:15:12,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:15:12,624 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 452 [2022-12-13 13:15:12,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 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) [2022-12-13 13:15:12,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:15:12,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 452 [2022-12-13 13:15:12,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:15:12,790 INFO L130 PetriNetUnfolder]: 452/664 cut-off events. [2022-12-13 13:15:12,791 INFO L131 PetriNetUnfolder]: For 144/144 co-relation queries the response was YES. [2022-12-13 13:15:12,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1630 conditions, 664 events. 452/664 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2337 event pairs, 280 based on Foata normal form. 46/537 useless extension candidates. Maximal degree in co-relation 1624. Up to 461 conditions per place. [2022-12-13 13:15:12,794 INFO L137 encePairwiseOnDemand]: 445/452 looper letters, 26 selfloop transitions, 2 changer transitions 14/43 dead transitions. [2022-12-13 13:15:12,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 43 transitions, 202 flow [2022-12-13 13:15:12,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:15:12,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:15:12,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 797 transitions. [2022-12-13 13:15:12,796 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44081858407079644 [2022-12-13 13:15:12,796 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 797 transitions. [2022-12-13 13:15:12,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 797 transitions. [2022-12-13 13:15:12,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:15:12,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 797 transitions. [2022-12-13 13:15:12,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 199.25) internal successors, (797), 4 states have internal predecessors, (797), 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) [2022-12-13 13:15:12,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 452.0) internal successors, (2260), 5 states have internal predecessors, (2260), 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) [2022-12-13 13:15:12,801 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 452.0) internal successors, (2260), 5 states have internal predecessors, (2260), 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) [2022-12-13 13:15:12,801 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 78 flow. Second operand 4 states and 797 transitions. [2022-12-13 13:15:12,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 43 transitions, 202 flow [2022-12-13 13:15:12,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 43 transitions, 198 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 13:15:12,803 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 94 flow [2022-12-13 13:15:12,803 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2022-12-13 13:15:12,804 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2022-12-13 13:15:12,804 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 94 flow [2022-12-13 13:15:12,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 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) [2022-12-13 13:15:12,804 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:15:12,804 INFO L209 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] [2022-12-13 13:15:12,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 13:15:12,805 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:15:12,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:15:12,805 INFO L85 PathProgramCache]: Analyzing trace with hash 958397596, now seen corresponding path program 1 times [2022-12-13 13:15:12,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:15:12,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475892557] [2022-12-13 13:15:12,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:15:12,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:15:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:13,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:15:13,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:15:13,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475892557] [2022-12-13 13:15:13,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475892557] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:15:13,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:15:13,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:15:13,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44527255] [2022-12-13 13:15:13,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:15:13,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 13:15:13,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:15:13,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 13:15:13,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:15:13,803 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 452 [2022-12-13 13:15:13,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 94 flow. Second operand has 9 states, 9 states have (on average 184.66666666666666) internal successors, (1662), 9 states have internal predecessors, (1662), 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) [2022-12-13 13:15:13,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:15:13,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 452 [2022-12-13 13:15:13,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:15:14,277 INFO L130 PetriNetUnfolder]: 565/811 cut-off events. [2022-12-13 13:15:14,277 INFO L131 PetriNetUnfolder]: For 142/142 co-relation queries the response was YES. [2022-12-13 13:15:14,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2132 conditions, 811 events. 565/811 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2623 event pairs, 15 based on Foata normal form. 1/609 useless extension candidates. Maximal degree in co-relation 2124. Up to 572 conditions per place. [2022-12-13 13:15:14,282 INFO L137 encePairwiseOnDemand]: 441/452 looper letters, 67 selfloop transitions, 28 changer transitions 3/98 dead transitions. [2022-12-13 13:15:14,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 98 transitions, 501 flow [2022-12-13 13:15:14,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:15:14,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 13:15:14,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1735 transitions. [2022-12-13 13:15:14,287 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42649950835791545 [2022-12-13 13:15:14,288 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1735 transitions. [2022-12-13 13:15:14,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1735 transitions. [2022-12-13 13:15:14,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:15:14,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1735 transitions. [2022-12-13 13:15:14,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 192.77777777777777) internal successors, (1735), 9 states have internal predecessors, (1735), 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) [2022-12-13 13:15:14,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 452.0) internal successors, (4520), 10 states have internal predecessors, (4520), 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) [2022-12-13 13:15:14,302 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 452.0) internal successors, (4520), 10 states have internal predecessors, (4520), 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) [2022-12-13 13:15:14,302 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 94 flow. Second operand 9 states and 1735 transitions. [2022-12-13 13:15:14,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 98 transitions, 501 flow [2022-12-13 13:15:14,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 98 transitions, 497 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 13:15:14,305 INFO L231 Difference]: Finished difference. Result has 45 places, 55 transitions, 286 flow [2022-12-13 13:15:14,306 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=286, PETRI_PLACES=45, PETRI_TRANSITIONS=55} [2022-12-13 13:15:14,306 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 13 predicate places. [2022-12-13 13:15:14,306 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 55 transitions, 286 flow [2022-12-13 13:15:14,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 184.66666666666666) internal successors, (1662), 9 states have internal predecessors, (1662), 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) [2022-12-13 13:15:14,308 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:15:14,308 INFO L209 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] [2022-12-13 13:15:14,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 13:15:14,308 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:15:14,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:15:14,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1986712356, now seen corresponding path program 2 times [2022-12-13 13:15:14,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:15:14,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563956121] [2022-12-13 13:15:14,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:15:14,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:15:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:14,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:15:14,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:15:14,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563956121] [2022-12-13 13:15:14,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563956121] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:15:14,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:15:14,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:15:14,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638740056] [2022-12-13 13:15:14,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:15:14,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:15:14,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:15:14,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:15:14,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:15:14,407 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 452 [2022-12-13 13:15:14,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 55 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 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) [2022-12-13 13:15:14,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:15:14,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 452 [2022-12-13 13:15:14,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:15:14,546 INFO L130 PetriNetUnfolder]: 456/665 cut-off events. [2022-12-13 13:15:14,546 INFO L131 PetriNetUnfolder]: For 501/513 co-relation queries the response was YES. [2022-12-13 13:15:14,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2284 conditions, 665 events. 456/665 cut-off events. For 501/513 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1976 event pairs, 85 based on Foata normal form. 26/537 useless extension candidates. Maximal degree in co-relation 2272. Up to 581 conditions per place. [2022-12-13 13:15:14,551 INFO L137 encePairwiseOnDemand]: 448/452 looper letters, 55 selfloop transitions, 5 changer transitions 0/62 dead transitions. [2022-12-13 13:15:14,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 62 transitions, 420 flow [2022-12-13 13:15:14,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:15:14,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:15:14,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 620 transitions. [2022-12-13 13:15:14,553 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45722713864306785 [2022-12-13 13:15:14,553 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 620 transitions. [2022-12-13 13:15:14,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 620 transitions. [2022-12-13 13:15:14,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:15:14,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 620 transitions. [2022-12-13 13:15:14,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 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) [2022-12-13 13:15:14,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 452.0) internal successors, (1808), 4 states have internal predecessors, (1808), 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) [2022-12-13 13:15:14,558 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 452.0) internal successors, (1808), 4 states have internal predecessors, (1808), 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) [2022-12-13 13:15:14,559 INFO L175 Difference]: Start difference. First operand has 45 places, 55 transitions, 286 flow. Second operand 3 states and 620 transitions. [2022-12-13 13:15:14,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 62 transitions, 420 flow [2022-12-13 13:15:14,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 62 transitions, 360 flow, removed 29 selfloop flow, removed 2 redundant places. [2022-12-13 13:15:14,565 INFO L231 Difference]: Finished difference. Result has 46 places, 53 transitions, 235 flow [2022-12-13 13:15:14,565 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=46, PETRI_TRANSITIONS=53} [2022-12-13 13:15:14,566 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2022-12-13 13:15:14,566 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 53 transitions, 235 flow [2022-12-13 13:15:14,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 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) [2022-12-13 13:15:14,566 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:15:14,566 INFO L209 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] [2022-12-13 13:15:14,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 13:15:14,567 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:15:14,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:15:14,567 INFO L85 PathProgramCache]: Analyzing trace with hash 139017622, now seen corresponding path program 3 times [2022-12-13 13:15:14,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:15:14,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979715293] [2022-12-13 13:15:14,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:15:14,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:15:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:14,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:15:14,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:15:14,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979715293] [2022-12-13 13:15:14,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979715293] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:15:14,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:15:14,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:15:14,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239634015] [2022-12-13 13:15:14,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:15:14,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:15:14,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:15:14,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:15:14,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:15:14,692 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 452 [2022-12-13 13:15:14,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 53 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 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) [2022-12-13 13:15:14,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:15:14,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 452 [2022-12-13 13:15:14,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:15:14,815 INFO L130 PetriNetUnfolder]: 408/627 cut-off events. [2022-12-13 13:15:14,815 INFO L131 PetriNetUnfolder]: For 552/564 co-relation queries the response was YES. [2022-12-13 13:15:14,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2049 conditions, 627 events. 408/627 cut-off events. For 552/564 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2082 event pairs, 138 based on Foata normal form. 74/575 useless extension candidates. Maximal degree in co-relation 2036. Up to 366 conditions per place. [2022-12-13 13:15:14,821 INFO L137 encePairwiseOnDemand]: 447/452 looper letters, 45 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2022-12-13 13:15:14,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 53 transitions, 327 flow [2022-12-13 13:15:14,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:15:14,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:15:14,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 615 transitions. [2022-12-13 13:15:14,824 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45353982300884954 [2022-12-13 13:15:14,824 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 615 transitions. [2022-12-13 13:15:14,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 615 transitions. [2022-12-13 13:15:14,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:15:14,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 615 transitions. [2022-12-13 13:15:14,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 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) [2022-12-13 13:15:14,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 452.0) internal successors, (1808), 4 states have internal predecessors, (1808), 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) [2022-12-13 13:15:14,826 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 452.0) internal successors, (1808), 4 states have internal predecessors, (1808), 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) [2022-12-13 13:15:14,826 INFO L175 Difference]: Start difference. First operand has 46 places, 53 transitions, 235 flow. Second operand 3 states and 615 transitions. [2022-12-13 13:15:14,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 53 transitions, 327 flow [2022-12-13 13:15:14,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 53 transitions, 294 flow, removed 10 selfloop flow, removed 6 redundant places. [2022-12-13 13:15:14,828 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 191 flow [2022-12-13 13:15:14,828 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=191, PETRI_PLACES=43, PETRI_TRANSITIONS=44} [2022-12-13 13:15:14,829 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2022-12-13 13:15:14,829 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 191 flow [2022-12-13 13:15:14,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 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) [2022-12-13 13:15:14,829 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:15:14,829 INFO L209 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] [2022-12-13 13:15:14,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 13:15:14,830 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:15:14,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:15:14,830 INFO L85 PathProgramCache]: Analyzing trace with hash -210504036, now seen corresponding path program 4 times [2022-12-13 13:15:14,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:15:14,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594160691] [2022-12-13 13:15:14,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:15:14,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:15:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:15,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:15:15,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:15:15,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594160691] [2022-12-13 13:15:15,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594160691] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:15:15,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:15:15,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:15:15,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842049942] [2022-12-13 13:15:15,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:15:15,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 13:15:15,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:15:15,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 13:15:15,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:15:15,467 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 452 [2022-12-13 13:15:15,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 191 flow. Second operand has 9 states, 9 states have (on average 183.66666666666666) internal successors, (1653), 9 states have internal predecessors, (1653), 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) [2022-12-13 13:15:15,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:15:15,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 452 [2022-12-13 13:15:15,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:15:15,795 INFO L130 PetriNetUnfolder]: 495/772 cut-off events. [2022-12-13 13:15:15,795 INFO L131 PetriNetUnfolder]: For 349/349 co-relation queries the response was YES. [2022-12-13 13:15:15,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2412 conditions, 772 events. 495/772 cut-off events. For 349/349 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2688 event pairs, 111 based on Foata normal form. 1/622 useless extension candidates. Maximal degree in co-relation 2401. Up to 633 conditions per place. [2022-12-13 13:15:15,799 INFO L137 encePairwiseOnDemand]: 441/452 looper letters, 65 selfloop transitions, 18 changer transitions 3/86 dead transitions. [2022-12-13 13:15:15,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 86 transitions, 510 flow [2022-12-13 13:15:15,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:15:15,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 13:15:15,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1701 transitions. [2022-12-13 13:15:15,802 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41814159292035397 [2022-12-13 13:15:15,802 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1701 transitions. [2022-12-13 13:15:15,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1701 transitions. [2022-12-13 13:15:15,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:15:15,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1701 transitions. [2022-12-13 13:15:15,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 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) [2022-12-13 13:15:15,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 452.0) internal successors, (4520), 10 states have internal predecessors, (4520), 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) [2022-12-13 13:15:15,809 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 452.0) internal successors, (4520), 10 states have internal predecessors, (4520), 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) [2022-12-13 13:15:15,809 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 191 flow. Second operand 9 states and 1701 transitions. [2022-12-13 13:15:15,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 86 transitions, 510 flow [2022-12-13 13:15:15,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 86 transitions, 501 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:15:15,811 INFO L231 Difference]: Finished difference. Result has 55 places, 58 transitions, 333 flow [2022-12-13 13:15:15,811 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=333, PETRI_PLACES=55, PETRI_TRANSITIONS=58} [2022-12-13 13:15:15,811 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 23 predicate places. [2022-12-13 13:15:15,811 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 58 transitions, 333 flow [2022-12-13 13:15:15,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 183.66666666666666) internal successors, (1653), 9 states have internal predecessors, (1653), 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) [2022-12-13 13:15:15,812 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:15:15,812 INFO L209 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] [2022-12-13 13:15:15,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 13:15:15,812 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:15:15,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:15:15,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1070419472, now seen corresponding path program 5 times [2022-12-13 13:15:15,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:15:15,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246549215] [2022-12-13 13:15:15,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:15:15,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:15:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:16,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:15:16,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:15:16,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246549215] [2022-12-13 13:15:16,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246549215] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:15:16,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:15:16,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:15:16,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518699871] [2022-12-13 13:15:16,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:15:16,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 13:15:16,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:15:16,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 13:15:16,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:15:16,535 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 452 [2022-12-13 13:15:16,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 58 transitions, 333 flow. Second operand has 9 states, 9 states have (on average 184.66666666666666) internal successors, (1662), 9 states have internal predecessors, (1662), 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) [2022-12-13 13:15:16,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:15:16,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 452 [2022-12-13 13:15:16,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:15:16,931 INFO L130 PetriNetUnfolder]: 607/947 cut-off events. [2022-12-13 13:15:16,931 INFO L131 PetriNetUnfolder]: For 874/874 co-relation queries the response was YES. [2022-12-13 13:15:16,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3371 conditions, 947 events. 607/947 cut-off events. For 874/874 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3610 event pairs, 73 based on Foata normal form. 1/766 useless extension candidates. Maximal degree in co-relation 3355. Up to 609 conditions per place. [2022-12-13 13:15:16,936 INFO L137 encePairwiseOnDemand]: 441/452 looper letters, 74 selfloop transitions, 35 changer transitions 3/112 dead transitions. [2022-12-13 13:15:16,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 112 transitions, 758 flow [2022-12-13 13:15:16,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:15:16,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 13:15:16,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1726 transitions. [2022-12-13 13:15:16,939 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42428711897738447 [2022-12-13 13:15:16,939 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1726 transitions. [2022-12-13 13:15:16,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1726 transitions. [2022-12-13 13:15:16,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:15:16,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1726 transitions. [2022-12-13 13:15:16,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 191.77777777777777) internal successors, (1726), 9 states have internal predecessors, (1726), 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) [2022-12-13 13:15:16,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 452.0) internal successors, (4520), 10 states have internal predecessors, (4520), 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) [2022-12-13 13:15:16,946 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 452.0) internal successors, (4520), 10 states have internal predecessors, (4520), 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) [2022-12-13 13:15:16,946 INFO L175 Difference]: Start difference. First operand has 55 places, 58 transitions, 333 flow. Second operand 9 states and 1726 transitions. [2022-12-13 13:15:16,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 112 transitions, 758 flow [2022-12-13 13:15:16,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 112 transitions, 726 flow, removed 15 selfloop flow, removed 1 redundant places. [2022-12-13 13:15:16,949 INFO L231 Difference]: Finished difference. Result has 64 places, 69 transitions, 493 flow [2022-12-13 13:15:16,950 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=493, PETRI_PLACES=64, PETRI_TRANSITIONS=69} [2022-12-13 13:15:16,950 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 32 predicate places. [2022-12-13 13:15:16,950 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 69 transitions, 493 flow [2022-12-13 13:15:16,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 184.66666666666666) internal successors, (1662), 9 states have internal predecessors, (1662), 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) [2022-12-13 13:15:16,951 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:15:16,951 INFO L209 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] [2022-12-13 13:15:16,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 13:15:16,951 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:15:16,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:15:16,951 INFO L85 PathProgramCache]: Analyzing trace with hash -2083228194, now seen corresponding path program 6 times [2022-12-13 13:15:16,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:15:16,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361751879] [2022-12-13 13:15:16,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:15:16,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:15:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:17,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:15:17,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:15:17,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361751879] [2022-12-13 13:15:17,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361751879] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:15:17,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:15:17,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:15:17,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508295696] [2022-12-13 13:15:17,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:15:17,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 13:15:17,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:15:17,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 13:15:17,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:15:17,749 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 452 [2022-12-13 13:15:17,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 69 transitions, 493 flow. Second operand has 9 states, 9 states have (on average 183.66666666666666) internal successors, (1653), 9 states have internal predecessors, (1653), 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) [2022-12-13 13:15:17,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:15:17,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 452 [2022-12-13 13:15:17,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:15:18,127 INFO L130 PetriNetUnfolder]: 616/971 cut-off events. [2022-12-13 13:15:18,127 INFO L131 PetriNetUnfolder]: For 1393/1393 co-relation queries the response was YES. [2022-12-13 13:15:18,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3878 conditions, 971 events. 616/971 cut-off events. For 1393/1393 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3721 event pairs, 163 based on Foata normal form. 1/800 useless extension candidates. Maximal degree in co-relation 3859. Up to 832 conditions per place. [2022-12-13 13:15:18,134 INFO L137 encePairwiseOnDemand]: 441/452 looper letters, 86 selfloop transitions, 19 changer transitions 3/108 dead transitions. [2022-12-13 13:15:18,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 108 transitions, 861 flow [2022-12-13 13:15:18,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:15:18,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 13:15:18,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1703 transitions. [2022-12-13 13:15:18,138 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41863323500491645 [2022-12-13 13:15:18,138 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1703 transitions. [2022-12-13 13:15:18,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1703 transitions. [2022-12-13 13:15:18,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:15:18,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1703 transitions. [2022-12-13 13:15:18,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 189.22222222222223) internal successors, (1703), 9 states have internal predecessors, (1703), 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) [2022-12-13 13:15:18,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 452.0) internal successors, (4520), 10 states have internal predecessors, (4520), 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) [2022-12-13 13:15:18,147 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 452.0) internal successors, (4520), 10 states have internal predecessors, (4520), 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) [2022-12-13 13:15:18,147 INFO L175 Difference]: Start difference. First operand has 64 places, 69 transitions, 493 flow. Second operand 9 states and 1703 transitions. [2022-12-13 13:15:18,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 108 transitions, 861 flow [2022-12-13 13:15:18,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 108 transitions, 779 flow, removed 29 selfloop flow, removed 4 redundant places. [2022-12-13 13:15:18,154 INFO L231 Difference]: Finished difference. Result has 72 places, 76 transitions, 556 flow [2022-12-13 13:15:18,154 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=556, PETRI_PLACES=72, PETRI_TRANSITIONS=76} [2022-12-13 13:15:18,154 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 40 predicate places. [2022-12-13 13:15:18,154 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 76 transitions, 556 flow [2022-12-13 13:15:18,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 183.66666666666666) internal successors, (1653), 9 states have internal predecessors, (1653), 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) [2022-12-13 13:15:18,155 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:15:18,155 INFO L209 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] [2022-12-13 13:15:18,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 13:15:18,155 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:15:18,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:15:18,156 INFO L85 PathProgramCache]: Analyzing trace with hash 171435788, now seen corresponding path program 1 times [2022-12-13 13:15:18,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:15:18,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370513989] [2022-12-13 13:15:18,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:15:18,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:15:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:18,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:15:18,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:15:18,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370513989] [2022-12-13 13:15:18,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370513989] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:15:18,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:15:18,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:15:18,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336622570] [2022-12-13 13:15:18,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:15:18,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:15:18,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:15:18,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:15:18,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:15:18,246 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 452 [2022-12-13 13:15:18,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 76 transitions, 556 flow. Second operand has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 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) [2022-12-13 13:15:18,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:15:18,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 452 [2022-12-13 13:15:18,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:15:18,507 INFO L130 PetriNetUnfolder]: 804/1264 cut-off events. [2022-12-13 13:15:18,507 INFO L131 PetriNetUnfolder]: For 2109/2117 co-relation queries the response was YES. [2022-12-13 13:15:18,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5037 conditions, 1264 events. 804/1264 cut-off events. For 2109/2117 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5257 event pairs, 213 based on Foata normal form. 20/1032 useless extension candidates. Maximal degree in co-relation 5013. Up to 576 conditions per place. [2022-12-13 13:15:18,512 INFO L137 encePairwiseOnDemand]: 447/452 looper letters, 63 selfloop transitions, 39 changer transitions 4/108 dead transitions. [2022-12-13 13:15:18,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 108 transitions, 932 flow [2022-12-13 13:15:18,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:15:18,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:15:18,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 836 transitions. [2022-12-13 13:15:18,514 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46238938053097345 [2022-12-13 13:15:18,514 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 836 transitions. [2022-12-13 13:15:18,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 836 transitions. [2022-12-13 13:15:18,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:15:18,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 836 transitions. [2022-12-13 13:15:18,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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) [2022-12-13 13:15:18,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 452.0) internal successors, (2260), 5 states have internal predecessors, (2260), 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) [2022-12-13 13:15:18,517 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 452.0) internal successors, (2260), 5 states have internal predecessors, (2260), 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) [2022-12-13 13:15:18,518 INFO L175 Difference]: Start difference. First operand has 72 places, 76 transitions, 556 flow. Second operand 4 states and 836 transitions. [2022-12-13 13:15:18,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 108 transitions, 932 flow [2022-12-13 13:15:18,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 108 transitions, 864 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-12-13 13:15:18,524 INFO L231 Difference]: Finished difference. Result has 72 places, 78 transitions, 661 flow [2022-12-13 13:15:18,524 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=661, PETRI_PLACES=72, PETRI_TRANSITIONS=78} [2022-12-13 13:15:18,525 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 40 predicate places. [2022-12-13 13:15:18,525 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 78 transitions, 661 flow [2022-12-13 13:15:18,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 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) [2022-12-13 13:15:18,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:15:18,526 INFO L209 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] [2022-12-13 13:15:18,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 13:15:18,526 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:15:18,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:15:18,526 INFO L85 PathProgramCache]: Analyzing trace with hash -2064057527, now seen corresponding path program 1 times [2022-12-13 13:15:18,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:15:18,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987694088] [2022-12-13 13:15:18,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:15:18,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:15:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:18,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:15:18,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:15:18,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987694088] [2022-12-13 13:15:18,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987694088] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:15:18,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448462979] [2022-12-13 13:15:18,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:15:18,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:15:18,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:15:18,612 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:15:18,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:15:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:18,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 13:15:18,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:15:18,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:15:18,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:15:18,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:15:18,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448462979] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:15:18,824 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:15:18,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-13 13:15:18,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639325848] [2022-12-13 13:15:18,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:15:18,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 13:15:18,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:15:18,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 13:15:18,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-12-13 13:15:18,962 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 452 [2022-12-13 13:15:18,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 78 transitions, 661 flow. Second operand has 12 states, 12 states have (on average 185.16666666666666) internal successors, (2222), 12 states have internal predecessors, (2222), 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) [2022-12-13 13:15:18,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:15:18,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 452 [2022-12-13 13:15:18,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:15:19,348 INFO L130 PetriNetUnfolder]: 1246/1993 cut-off events. [2022-12-13 13:15:19,348 INFO L131 PetriNetUnfolder]: For 4753/4769 co-relation queries the response was YES. [2022-12-13 13:15:19,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9115 conditions, 1993 events. 1246/1993 cut-off events. For 4753/4769 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9261 event pairs, 570 based on Foata normal form. 80/1699 useless extension candidates. Maximal degree in co-relation 9090. Up to 1138 conditions per place. [2022-12-13 13:15:19,358 INFO L137 encePairwiseOnDemand]: 447/452 looper letters, 142 selfloop transitions, 7 changer transitions 5/156 dead transitions. [2022-12-13 13:15:19,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 156 transitions, 1608 flow [2022-12-13 13:15:19,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:15:19,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 13:15:19,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1153 transitions. [2022-12-13 13:15:19,360 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4251474926253687 [2022-12-13 13:15:19,361 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1153 transitions. [2022-12-13 13:15:19,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1153 transitions. [2022-12-13 13:15:19,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:15:19,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1153 transitions. [2022-12-13 13:15:19,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 192.16666666666666) internal successors, (1153), 6 states have internal predecessors, (1153), 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) [2022-12-13 13:15:19,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 452.0) internal successors, (3164), 7 states have internal predecessors, (3164), 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) [2022-12-13 13:15:19,365 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 452.0) internal successors, (3164), 7 states have internal predecessors, (3164), 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) [2022-12-13 13:15:19,365 INFO L175 Difference]: Start difference. First operand has 72 places, 78 transitions, 661 flow. Second operand 6 states and 1153 transitions. [2022-12-13 13:15:19,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 156 transitions, 1608 flow [2022-12-13 13:15:19,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 156 transitions, 1550 flow, removed 20 selfloop flow, removed 3 redundant places. [2022-12-13 13:15:19,376 INFO L231 Difference]: Finished difference. Result has 77 places, 83 transitions, 717 flow [2022-12-13 13:15:19,376 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=717, PETRI_PLACES=77, PETRI_TRANSITIONS=83} [2022-12-13 13:15:19,377 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 45 predicate places. [2022-12-13 13:15:19,377 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 83 transitions, 717 flow [2022-12-13 13:15:19,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 185.16666666666666) internal successors, (2222), 12 states have internal predecessors, (2222), 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) [2022-12-13 13:15:19,377 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:15:19,377 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-12-13 13:15:19,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:15:19,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 13:15:19,578 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:15:19,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:15:19,578 INFO L85 PathProgramCache]: Analyzing trace with hash 153723027, now seen corresponding path program 2 times [2022-12-13 13:15:19,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:15:19,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531419464] [2022-12-13 13:15:19,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:15:19,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:15:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:20,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:15:20,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:15:20,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531419464] [2022-12-13 13:15:20,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531419464] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:15:20,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034392675] [2022-12-13 13:15:20,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:15:20,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:15:20,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:15:20,531 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:15:20,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 13:15:20,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:15:20,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:15:20,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 13:15:20,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:15:20,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:15:20,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 13:15:20,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:15:20,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 13:15:20,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 13:15:20,904 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 13:15:20,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:15:21,035 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:15:21,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 155 [2022-12-13 13:15:21,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 126 [2022-12-13 13:15:21,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 102 [2022-12-13 13:15:21,161 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 13:15:21,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034392675] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:15:21,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:15:21,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 23 [2022-12-13 13:15:21,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281116533] [2022-12-13 13:15:21,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:15:21,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 13:15:21,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:15:21,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 13:15:21,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=476, Unknown=6, NotChecked=0, Total=552 [2022-12-13 13:15:23,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:15:23,365 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 452 [2022-12-13 13:15:23,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 83 transitions, 717 flow. Second operand has 24 states, 24 states have (on average 140.375) internal successors, (3369), 24 states have internal predecessors, (3369), 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) [2022-12-13 13:15:23,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:15:23,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 452 [2022-12-13 13:15:23,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:15:24,605 INFO L130 PetriNetUnfolder]: 1290/2038 cut-off events. [2022-12-13 13:15:24,606 INFO L131 PetriNetUnfolder]: For 4832/4856 co-relation queries the response was YES. [2022-12-13 13:15:24,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8994 conditions, 2038 events. 1290/2038 cut-off events. For 4832/4856 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9302 event pairs, 173 based on Foata normal form. 0/1683 useless extension candidates. Maximal degree in co-relation 8968. Up to 1067 conditions per place. [2022-12-13 13:15:24,615 INFO L137 encePairwiseOnDemand]: 444/452 looper letters, 128 selfloop transitions, 45 changer transitions 0/175 dead transitions. [2022-12-13 13:15:24,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 175 transitions, 1533 flow [2022-12-13 13:15:24,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 13:15:24,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 13:15:24,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1904 transitions. [2022-12-13 13:15:24,618 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.32402995234853643 [2022-12-13 13:15:24,619 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1904 transitions. [2022-12-13 13:15:24,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1904 transitions. [2022-12-13 13:15:24,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:15:24,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1904 transitions. [2022-12-13 13:15:24,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 146.46153846153845) internal successors, (1904), 13 states have internal predecessors, (1904), 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) [2022-12-13 13:15:24,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 452.0) internal successors, (6328), 14 states have internal predecessors, (6328), 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) [2022-12-13 13:15:24,626 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 452.0) internal successors, (6328), 14 states have internal predecessors, (6328), 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) [2022-12-13 13:15:24,626 INFO L175 Difference]: Start difference. First operand has 77 places, 83 transitions, 717 flow. Second operand 13 states and 1904 transitions. [2022-12-13 13:15:24,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 175 transitions, 1533 flow [2022-12-13 13:15:24,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 175 transitions, 1488 flow, removed 19 selfloop flow, removed 3 redundant places. [2022-12-13 13:15:24,638 INFO L231 Difference]: Finished difference. Result has 88 places, 97 transitions, 896 flow [2022-12-13 13:15:24,638 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=896, PETRI_PLACES=88, PETRI_TRANSITIONS=97} [2022-12-13 13:15:24,639 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 56 predicate places. [2022-12-13 13:15:24,639 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 97 transitions, 896 flow [2022-12-13 13:15:24,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 140.375) internal successors, (3369), 24 states have internal predecessors, (3369), 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) [2022-12-13 13:15:24,640 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:15:24,640 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-12-13 13:15:24,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 13:15:24,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 13:15:24,841 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:15:24,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:15:24,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1281070494, now seen corresponding path program 1 times [2022-12-13 13:15:24,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:15:24,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896493058] [2022-12-13 13:15:24,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:15:24,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:15:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:24,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:15:24,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:15:24,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896493058] [2022-12-13 13:15:24,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896493058] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:15:24,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125690727] [2022-12-13 13:15:24,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:15:24,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:15:24,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:15:24,986 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:15:24,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 13:15:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:25,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 13:15:25,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:15:25,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:15:25,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:15:25,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:15:25,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125690727] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:15:25,216 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:15:25,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 13:15:25,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913519837] [2022-12-13 13:15:25,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:15:25,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 13:15:25,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:15:25,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 13:15:25,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-12-13 13:15:25,350 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 452 [2022-12-13 13:15:25,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 97 transitions, 896 flow. Second operand has 12 states, 12 states have (on average 185.25) internal successors, (2223), 12 states have internal predecessors, (2223), 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) [2022-12-13 13:15:25,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:15:25,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 452 [2022-12-13 13:15:25,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:15:25,869 INFO L130 PetriNetUnfolder]: 1996/3247 cut-off events. [2022-12-13 13:15:25,869 INFO L131 PetriNetUnfolder]: For 10260/10308 co-relation queries the response was YES. [2022-12-13 13:15:25,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14519 conditions, 3247 events. 1996/3247 cut-off events. For 10260/10308 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 16971 event pairs, 999 based on Foata normal form. 216/3184 useless extension candidates. Maximal degree in co-relation 14492. Up to 2027 conditions per place. [2022-12-13 13:15:25,882 INFO L137 encePairwiseOnDemand]: 447/452 looper letters, 91 selfloop transitions, 5 changer transitions 63/161 dead transitions. [2022-12-13 13:15:25,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 161 transitions, 1755 flow [2022-12-13 13:15:25,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:15:25,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 13:15:25,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1148 transitions. [2022-12-13 13:15:25,884 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42330383480825956 [2022-12-13 13:15:25,884 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1148 transitions. [2022-12-13 13:15:25,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1148 transitions. [2022-12-13 13:15:25,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:15:25,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1148 transitions. [2022-12-13 13:15:25,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 191.33333333333334) internal successors, (1148), 6 states have internal predecessors, (1148), 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) [2022-12-13 13:15:25,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 452.0) internal successors, (3164), 7 states have internal predecessors, (3164), 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) [2022-12-13 13:15:25,887 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 452.0) internal successors, (3164), 7 states have internal predecessors, (3164), 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) [2022-12-13 13:15:25,887 INFO L175 Difference]: Start difference. First operand has 88 places, 97 transitions, 896 flow. Second operand 6 states and 1148 transitions. [2022-12-13 13:15:25,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 161 transitions, 1755 flow [2022-12-13 13:15:25,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 161 transitions, 1700 flow, removed 25 selfloop flow, removed 2 redundant places. [2022-12-13 13:15:25,905 INFO L231 Difference]: Finished difference. Result has 94 places, 98 transitions, 935 flow [2022-12-13 13:15:25,905 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=861, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=935, PETRI_PLACES=94, PETRI_TRANSITIONS=98} [2022-12-13 13:15:25,905 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 62 predicate places. [2022-12-13 13:15:25,905 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 98 transitions, 935 flow [2022-12-13 13:15:25,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 185.25) internal successors, (2223), 12 states have internal predecessors, (2223), 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) [2022-12-13 13:15:25,906 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:15:25,906 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-12-13 13:15:25,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 13:15:26,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 13:15:26,107 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:15:26,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:15:26,108 INFO L85 PathProgramCache]: Analyzing trace with hash 610261872, now seen corresponding path program 2 times [2022-12-13 13:15:26,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:15:26,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23950667] [2022-12-13 13:15:26,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:15:26,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:15:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:26,256 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:15:26,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:15:26,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23950667] [2022-12-13 13:15:26,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23950667] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:15:26,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358150064] [2022-12-13 13:15:26,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:15:26,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:15:26,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:15:26,258 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:15:26,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 13:15:26,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:15:26,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:15:26,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 13:15:26,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:15:26,445 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 13:15:26,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:15:26,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358150064] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:15:26,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:15:26,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-12-13 13:15:26,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486876329] [2022-12-13 13:15:26,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:15:26,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:15:26,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:15:26,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:15:26,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:15:26,472 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 452 [2022-12-13 13:15:26,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 98 transitions, 935 flow. Second operand has 4 states, 4 states have (on average 200.25) internal successors, (801), 4 states have internal predecessors, (801), 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) [2022-12-13 13:15:26,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:15:26,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 452 [2022-12-13 13:15:26,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:15:26,894 INFO L130 PetriNetUnfolder]: 1638/2617 cut-off events. [2022-12-13 13:15:26,894 INFO L131 PetriNetUnfolder]: For 9656/9680 co-relation queries the response was YES. [2022-12-13 13:15:26,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12078 conditions, 2617 events. 1638/2617 cut-off events. For 9656/9680 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 12470 event pairs, 288 based on Foata normal form. 136/2358 useless extension candidates. Maximal degree in co-relation 12047. Up to 1017 conditions per place. [2022-12-13 13:15:26,907 INFO L137 encePairwiseOnDemand]: 448/452 looper letters, 91 selfloop transitions, 17 changer transitions 26/136 dead transitions. [2022-12-13 13:15:26,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 136 transitions, 1392 flow [2022-12-13 13:15:26,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:15:26,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:15:26,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 842 transitions. [2022-12-13 13:15:26,909 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4657079646017699 [2022-12-13 13:15:26,909 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 842 transitions. [2022-12-13 13:15:26,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 842 transitions. [2022-12-13 13:15:26,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:15:26,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 842 transitions. [2022-12-13 13:15:26,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 210.5) internal successors, (842), 4 states have internal predecessors, (842), 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) [2022-12-13 13:15:26,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 452.0) internal successors, (2260), 5 states have internal predecessors, (2260), 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) [2022-12-13 13:15:26,911 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 452.0) internal successors, (2260), 5 states have internal predecessors, (2260), 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) [2022-12-13 13:15:26,911 INFO L175 Difference]: Start difference. First operand has 94 places, 98 transitions, 935 flow. Second operand 4 states and 842 transitions. [2022-12-13 13:15:26,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 136 transitions, 1392 flow [2022-12-13 13:15:26,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 136 transitions, 1326 flow, removed 27 selfloop flow, removed 6 redundant places. [2022-12-13 13:15:26,931 INFO L231 Difference]: Finished difference. Result has 91 places, 62 transitions, 503 flow [2022-12-13 13:15:26,931 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=503, PETRI_PLACES=91, PETRI_TRANSITIONS=62} [2022-12-13 13:15:26,931 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 59 predicate places. [2022-12-13 13:15:26,931 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 62 transitions, 503 flow [2022-12-13 13:15:26,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 200.25) internal successors, (801), 4 states have internal predecessors, (801), 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) [2022-12-13 13:15:26,931 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:15:26,931 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-12-13 13:15:26,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 13:15:27,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 13:15:27,133 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:15:27,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:15:27,135 INFO L85 PathProgramCache]: Analyzing trace with hash -463927045, now seen corresponding path program 1 times [2022-12-13 13:15:27,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:15:27,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114060224] [2022-12-13 13:15:27,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:15:27,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:15:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:28,542 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:15:28,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:15:28,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114060224] [2022-12-13 13:15:28,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114060224] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:15:28,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906873906] [2022-12-13 13:15:28,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:15:28,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:15:28,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:15:28,543 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:15:28,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 13:15:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:28,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-13 13:15:28,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:15:29,120 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:15:29,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:15:29,385 INFO L321 Elim1Store]: treesize reduction 23, result has 77.2 percent of original size [2022-12-13 13:15:29,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 90 [2022-12-13 13:15:29,737 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:15:29,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906873906] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:15:29,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:15:29,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 10] total 33 [2022-12-13 13:15:29,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187045942] [2022-12-13 13:15:29,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:15:29,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-13 13:15:29,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:15:29,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-13 13:15:29,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=977, Unknown=0, NotChecked=0, Total=1122 [2022-12-13 13:15:32,168 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 452 [2022-12-13 13:15:32,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 62 transitions, 503 flow. Second operand has 34 states, 34 states have (on average 162.2058823529412) internal successors, (5515), 34 states have internal predecessors, (5515), 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) [2022-12-13 13:15:32,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:15:32,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 452 [2022-12-13 13:15:32,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:15:38,287 INFO L130 PetriNetUnfolder]: 12193/18409 cut-off events. [2022-12-13 13:15:38,287 INFO L131 PetriNetUnfolder]: For 77348/77380 co-relation queries the response was YES. [2022-12-13 13:15:38,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94773 conditions, 18409 events. 12193/18409 cut-off events. For 77348/77380 co-relation queries the response was YES. Maximal size of possible extension queue 889. Compared 116972 event pairs, 588 based on Foata normal form. 0/15286 useless extension candidates. Maximal degree in co-relation 94744. Up to 6546 conditions per place. [2022-12-13 13:15:38,384 INFO L137 encePairwiseOnDemand]: 438/452 looper letters, 523 selfloop transitions, 298 changer transitions 4/827 dead transitions. [2022-12-13 13:15:38,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 827 transitions, 7758 flow [2022-12-13 13:15:38,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-12-13 13:15:38,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-12-13 13:15:38,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 8861 transitions. [2022-12-13 13:15:38,414 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.376999659632403 [2022-12-13 13:15:38,414 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 8861 transitions. [2022-12-13 13:15:38,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 8861 transitions. [2022-12-13 13:15:38,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:15:38,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 8861 transitions. [2022-12-13 13:15:38,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 170.40384615384616) internal successors, (8861), 52 states have internal predecessors, (8861), 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) [2022-12-13 13:15:38,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 452.0) internal successors, (23956), 53 states have internal predecessors, (23956), 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) [2022-12-13 13:15:38,440 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 452.0) internal successors, (23956), 53 states have internal predecessors, (23956), 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) [2022-12-13 13:15:38,441 INFO L175 Difference]: Start difference. First operand has 91 places, 62 transitions, 503 flow. Second operand 52 states and 8861 transitions. [2022-12-13 13:15:38,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 827 transitions, 7758 flow [2022-12-13 13:15:38,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 827 transitions, 6510 flow, removed 611 selfloop flow, removed 5 redundant places. [2022-12-13 13:15:38,575 INFO L231 Difference]: Finished difference. Result has 140 places, 367 transitions, 3956 flow [2022-12-13 13:15:38,575 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=3956, PETRI_PLACES=140, PETRI_TRANSITIONS=367} [2022-12-13 13:15:38,575 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 108 predicate places. [2022-12-13 13:15:38,575 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 367 transitions, 3956 flow [2022-12-13 13:15:38,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 162.2058823529412) internal successors, (5515), 34 states have internal predecessors, (5515), 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) [2022-12-13 13:15:38,576 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:15:38,576 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-12-13 13:15:38,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 13:15:38,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:15:38,777 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:15:38,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:15:38,778 INFO L85 PathProgramCache]: Analyzing trace with hash 567301483, now seen corresponding path program 2 times [2022-12-13 13:15:38,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:15:38,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159510023] [2022-12-13 13:15:38,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:15:38,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:15:38,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:39,273 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 13:15:39,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:15:39,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159510023] [2022-12-13 13:15:39,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159510023] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:15:39,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435569868] [2022-12-13 13:15:39,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:15:39,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:15:39,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:15:39,274 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:15:39,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 13:15:39,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:15:39,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:15:39,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 13:15:39,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:15:39,632 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 13:15:39,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:15:39,690 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-13 13:15:39,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-12-13 13:15:39,905 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 13:15:39,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435569868] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:15:39,905 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:15:39,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 22 [2022-12-13 13:15:39,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319796002] [2022-12-13 13:15:39,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:15:39,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 13:15:39,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:15:39,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 13:15:39,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2022-12-13 13:15:40,520 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 452 [2022-12-13 13:15:40,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 367 transitions, 3956 flow. Second operand has 23 states, 23 states have (on average 171.08695652173913) internal successors, (3935), 23 states have internal predecessors, (3935), 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) [2022-12-13 13:15:40,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:15:40,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 452 [2022-12-13 13:15:40,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:15:48,371 INFO L130 PetriNetUnfolder]: 27136/40640 cut-off events. [2022-12-13 13:15:48,372 INFO L131 PetriNetUnfolder]: For 417617/417651 co-relation queries the response was YES. [2022-12-13 13:15:48,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273132 conditions, 40640 events. 27136/40640 cut-off events. For 417617/417651 co-relation queries the response was YES. Maximal size of possible extension queue 1457. Compared 274863 event pairs, 3982 based on Foata normal form. 228/34989 useless extension candidates. Maximal degree in co-relation 273089. Up to 11731 conditions per place. [2022-12-13 13:15:48,734 INFO L137 encePairwiseOnDemand]: 443/452 looper letters, 896 selfloop transitions, 334 changer transitions 4/1236 dead transitions. [2022-12-13 13:15:48,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 1236 transitions, 17485 flow [2022-12-13 13:15:48,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 13:15:48,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-13 13:15:48,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4268 transitions. [2022-12-13 13:15:48,740 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39343657817109146 [2022-12-13 13:15:48,740 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4268 transitions. [2022-12-13 13:15:48,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4268 transitions. [2022-12-13 13:15:48,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:15:48,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4268 transitions. [2022-12-13 13:15:48,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 177.83333333333334) internal successors, (4268), 24 states have internal predecessors, (4268), 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) [2022-12-13 13:15:48,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 452.0) internal successors, (11300), 25 states have internal predecessors, (11300), 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) [2022-12-13 13:15:48,755 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 452.0) internal successors, (11300), 25 states have internal predecessors, (11300), 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) [2022-12-13 13:15:48,755 INFO L175 Difference]: Start difference. First operand has 140 places, 367 transitions, 3956 flow. Second operand 24 states and 4268 transitions. [2022-12-13 13:15:48,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 1236 transitions, 17485 flow [2022-12-13 13:15:50,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 1236 transitions, 15597 flow, removed 926 selfloop flow, removed 8 redundant places. [2022-12-13 13:15:50,961 INFO L231 Difference]: Finished difference. Result has 162 places, 625 transitions, 6656 flow [2022-12-13 13:15:50,961 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=3161, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=6656, PETRI_PLACES=162, PETRI_TRANSITIONS=625} [2022-12-13 13:15:50,961 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 130 predicate places. [2022-12-13 13:15:50,961 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 625 transitions, 6656 flow [2022-12-13 13:15:50,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 171.08695652173913) internal successors, (3935), 23 states have internal predecessors, (3935), 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) [2022-12-13 13:15:50,962 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:15:50,962 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-12-13 13:15:50,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 13:15:51,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 13:15:51,164 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:15:51,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:15:51,165 INFO L85 PathProgramCache]: Analyzing trace with hash 468953555, now seen corresponding path program 3 times [2022-12-13 13:15:51,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:15:51,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732563639] [2022-12-13 13:15:51,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:15:51,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:15:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:52,425 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:15:52,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:15:52,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732563639] [2022-12-13 13:15:52,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732563639] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:15:52,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15449714] [2022-12-13 13:15:52,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 13:15:52,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:15:52,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:15:52,426 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:15:52,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 13:15:52,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 13:15:52,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:15:52,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-13 13:15:52,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:15:52,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:15:52,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-12-13 13:15:52,923 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 13:15:52,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:15:53,040 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:15:53,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 40 [2022-12-13 13:15:53,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2022-12-13 13:15:53,301 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 13:15:53,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15449714] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:15:53,301 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:15:53,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 31 [2022-12-13 13:15:53,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866589193] [2022-12-13 13:15:53,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:15:53,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 13:15:53,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:15:53,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 13:15:53,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=872, Unknown=0, NotChecked=0, Total=992 [2022-12-13 13:15:55,676 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 452 [2022-12-13 13:15:55,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 625 transitions, 6656 flow. Second operand has 32 states, 32 states have (on average 156.4375) internal successors, (5006), 32 states have internal predecessors, (5006), 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) [2022-12-13 13:15:55,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:15:55,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 452 [2022-12-13 13:15:55,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:16:14,246 INFO L130 PetriNetUnfolder]: 55336/83040 cut-off events. [2022-12-13 13:16:14,246 INFO L131 PetriNetUnfolder]: For 802664/802714 co-relation queries the response was YES. [2022-12-13 13:16:14,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545047 conditions, 83040 events. 55336/83040 cut-off events. For 802664/802714 co-relation queries the response was YES. Maximal size of possible extension queue 2823. Compared 621519 event pairs, 7254 based on Foata normal form. 1300/72770 useless extension candidates. Maximal degree in co-relation 544999. Up to 19402 conditions per place. [2022-12-13 13:16:14,922 INFO L137 encePairwiseOnDemand]: 441/452 looper letters, 1506 selfloop transitions, 725 changer transitions 8/2241 dead transitions. [2022-12-13 13:16:14,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 2241 transitions, 30398 flow [2022-12-13 13:16:14,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-13 13:16:14,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-12-13 13:16:14,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 6836 transitions. [2022-12-13 13:16:14,929 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.36009270965023177 [2022-12-13 13:16:14,929 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 6836 transitions. [2022-12-13 13:16:14,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 6836 transitions. [2022-12-13 13:16:14,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:16:14,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 6836 transitions. [2022-12-13 13:16:14,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 162.76190476190476) internal successors, (6836), 42 states have internal predecessors, (6836), 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) [2022-12-13 13:16:14,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 452.0) internal successors, (19436), 43 states have internal predecessors, (19436), 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) [2022-12-13 13:16:14,948 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 452.0) internal successors, (19436), 43 states have internal predecessors, (19436), 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) [2022-12-13 13:16:14,948 INFO L175 Difference]: Start difference. First operand has 162 places, 625 transitions, 6656 flow. Second operand 42 states and 6836 transitions. [2022-12-13 13:16:14,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 2241 transitions, 30398 flow [2022-12-13 13:16:20,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 2241 transitions, 29122 flow, removed 625 selfloop flow, removed 5 redundant places. [2022-12-13 13:16:20,811 INFO L231 Difference]: Finished difference. Result has 216 places, 1141 transitions, 14289 flow [2022-12-13 13:16:20,811 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=5987, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=14289, PETRI_PLACES=216, PETRI_TRANSITIONS=1141} [2022-12-13 13:16:20,811 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 184 predicate places. [2022-12-13 13:16:20,812 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 1141 transitions, 14289 flow [2022-12-13 13:16:20,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 156.4375) internal successors, (5006), 32 states have internal predecessors, (5006), 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) [2022-12-13 13:16:20,812 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:16:20,812 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 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] [2022-12-13 13:16:20,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 13:16:21,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 13:16:21,014 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:16:21,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:16:21,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1573969155, now seen corresponding path program 4 times [2022-12-13 13:16:21,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:16:21,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005837791] [2022-12-13 13:16:21,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:16:21,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:16:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:21,632 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 13:16:21,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:16:21,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005837791] [2022-12-13 13:16:21,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005837791] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:16:21,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045938975] [2022-12-13 13:16:21,633 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 13:16:21,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:16:21,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:16:21,634 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:16:21,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 13:16:21,763 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 13:16:21,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:16:21,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 60 conjunts are in the unsatisfiable core [2022-12-13 13:16:21,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:16:21,799 INFO L321 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2022-12-13 13:16:21,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 38 [2022-12-13 13:16:21,844 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 13:16:21,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 13:16:22,218 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-13 13:16:22,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 55 [2022-12-13 13:16:22,227 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:16:22,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 18 [2022-12-13 13:16:22,274 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 13:16:22,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:16:22,602 INFO L321 Elim1Store]: treesize reduction 24, result has 84.5 percent of original size [2022-12-13 13:16:22,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 78 treesize of output 167 [2022-12-13 13:16:22,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2022-12-13 13:16:23,142 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 13:16:23,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045938975] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:16:23,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:16:23,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 12] total 33 [2022-12-13 13:16:23,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453586299] [2022-12-13 13:16:23,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:16:23,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-13 13:16:23,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:16:23,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-13 13:16:23,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=943, Unknown=4, NotChecked=0, Total=1122 [2022-12-13 13:16:24,359 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 452 [2022-12-13 13:16:24,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 1141 transitions, 14289 flow. Second operand has 34 states, 34 states have (on average 137.08823529411765) internal successors, (4661), 34 states have internal predecessors, (4661), 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) [2022-12-13 13:16:24,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:16:24,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 452 [2022-12-13 13:16:24,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:16:29,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:16:32,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:17:01,676 INFO L130 PetriNetUnfolder]: 70239/105559 cut-off events. [2022-12-13 13:17:01,676 INFO L131 PetriNetUnfolder]: For 1267538/1267588 co-relation queries the response was YES. [2022-12-13 13:17:02,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 746360 conditions, 105559 events. 70239/105559 cut-off events. For 1267538/1267588 co-relation queries the response was YES. Maximal size of possible extension queue 3488. Compared 819782 event pairs, 2744 based on Foata normal form. 560/93226 useless extension candidates. Maximal degree in co-relation 746294. Up to 26724 conditions per place. [2022-12-13 13:17:02,890 INFO L137 encePairwiseOnDemand]: 438/452 looper letters, 945 selfloop transitions, 2237 changer transitions 0/3184 dead transitions. [2022-12-13 13:17:02,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 3184 transitions, 44884 flow [2022-12-13 13:17:02,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-12-13 13:17:02,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2022-12-13 13:17:02,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 11438 transitions. [2022-12-13 13:17:02,908 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.320320376386244 [2022-12-13 13:17:02,908 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 11438 transitions. [2022-12-13 13:17:02,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 11438 transitions. [2022-12-13 13:17:02,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:17:02,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 11438 transitions. [2022-12-13 13:17:02,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 144.78481012658227) internal successors, (11438), 79 states have internal predecessors, (11438), 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) [2022-12-13 13:17:02,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 452.0) internal successors, (36160), 80 states have internal predecessors, (36160), 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) [2022-12-13 13:17:02,952 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 452.0) internal successors, (36160), 80 states have internal predecessors, (36160), 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) [2022-12-13 13:17:02,952 INFO L175 Difference]: Start difference. First operand has 216 places, 1141 transitions, 14289 flow. Second operand 79 states and 11438 transitions. [2022-12-13 13:17:02,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 3184 transitions, 44884 flow [2022-12-13 13:17:23,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 3184 transitions, 43992 flow, removed 435 selfloop flow, removed 10 redundant places. [2022-12-13 13:17:23,674 INFO L231 Difference]: Finished difference. Result has 319 places, 2574 transitions, 39425 flow [2022-12-13 13:17:23,675 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=13385, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=966, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=39425, PETRI_PLACES=319, PETRI_TRANSITIONS=2574} [2022-12-13 13:17:23,675 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2022-12-13 13:17:23,675 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 2574 transitions, 39425 flow [2022-12-13 13:17:23,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 137.08823529411765) internal successors, (4661), 34 states have internal predecessors, (4661), 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) [2022-12-13 13:17:23,676 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:17:23,676 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 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] [2022-12-13 13:17:23,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 13:17:23,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 13:17:23,877 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:17:23,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:17:23,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1010440171, now seen corresponding path program 5 times [2022-12-13 13:17:23,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:17:23,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86932218] [2022-12-13 13:17:23,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:17:23,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:17:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:17:25,688 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:17:25,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:17:25,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86932218] [2022-12-13 13:17:25,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86932218] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:17:25,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383350453] [2022-12-13 13:17:25,689 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 13:17:25,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:17:25,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:17:25,690 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:17:25,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 13:17:25,822 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-13 13:17:25,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:17:25,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 37 conjunts are in the unsatisfiable core [2022-12-13 13:17:25,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:17:25,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:17:25,859 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2022-12-13 13:17:25,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2022-12-13 13:17:25,924 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 13:17:25,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 13:17:26,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-12-13 13:17:26,068 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 13:17:26,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:17:26,158 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:17:26,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 40 [2022-12-13 13:17:26,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2022-12-13 13:17:26,355 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 13:17:26,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383350453] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 13:17:26,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:17:26,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15, 7] total 26 [2022-12-13 13:17:26,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672703884] [2022-12-13 13:17:26,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:17:26,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:17:26,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:17:26,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:17:26,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-12-13 13:17:26,484 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 452 [2022-12-13 13:17:26,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 2574 transitions, 39425 flow. Second operand has 7 states, 7 states have (on average 175.71428571428572) internal successors, (1230), 7 states have internal predecessors, (1230), 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) [2022-12-13 13:17:26,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:17:26,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 452 [2022-12-13 13:17:26,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:18:12,738 INFO L130 PetriNetUnfolder]: 72037/108157 cut-off events. [2022-12-13 13:18:12,738 INFO L131 PetriNetUnfolder]: For 2087390/2087440 co-relation queries the response was YES. [2022-12-13 13:18:13,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 932531 conditions, 108157 events. 72037/108157 cut-off events. For 2087390/2087440 co-relation queries the response was YES. Maximal size of possible extension queue 3510. Compared 835131 event pairs, 11588 based on Foata normal form. 272/95513 useless extension candidates. Maximal degree in co-relation 932431. Up to 59331 conditions per place. [2022-12-13 13:18:14,472 INFO L137 encePairwiseOnDemand]: 448/452 looper letters, 2368 selfloop transitions, 362 changer transitions 1/2733 dead transitions. [2022-12-13 13:18:14,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 2733 transitions, 47587 flow [2022-12-13 13:18:14,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:18:14,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:18:14,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 736 transitions. [2022-12-13 13:18:14,474 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40707964601769914 [2022-12-13 13:18:14,474 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 736 transitions. [2022-12-13 13:18:14,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 736 transitions. [2022-12-13 13:18:14,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:18:14,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 736 transitions. [2022-12-13 13:18:14,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 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) [2022-12-13 13:18:14,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 452.0) internal successors, (2260), 5 states have internal predecessors, (2260), 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) [2022-12-13 13:18:14,478 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 452.0) internal successors, (2260), 5 states have internal predecessors, (2260), 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) [2022-12-13 13:18:14,479 INFO L175 Difference]: Start difference. First operand has 319 places, 2574 transitions, 39425 flow. Second operand 4 states and 736 transitions. [2022-12-13 13:18:14,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 2733 transitions, 47587 flow [2022-12-13 13:20:22,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 2733 transitions, 44332 flow, removed 1571 selfloop flow, removed 10 redundant places. [2022-12-13 13:20:22,834 INFO L231 Difference]: Finished difference. Result has 313 places, 2602 transitions, 37958 flow [2022-12-13 13:20:22,835 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=36059, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=317, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=37958, PETRI_PLACES=313, PETRI_TRANSITIONS=2602} [2022-12-13 13:20:22,835 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 281 predicate places. [2022-12-13 13:20:22,835 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 2602 transitions, 37958 flow [2022-12-13 13:20:22,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 175.71428571428572) internal successors, (1230), 7 states have internal predecessors, (1230), 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) [2022-12-13 13:20:22,836 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:20:22,836 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-12-13 13:20:22,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-13 13:20:23,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:20:23,037 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 13:20:23,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:20:23,038 INFO L85 PathProgramCache]: Analyzing trace with hash -2133992597, now seen corresponding path program 1 times [2022-12-13 13:20:23,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:20:23,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103081283] [2022-12-13 13:20:23,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:20:23,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:20:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:20:25,061 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:20:25,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:20:25,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103081283] [2022-12-13 13:20:25,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103081283] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:20:25,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330100340] [2022-12-13 13:20:25,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:20:25,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:20:25,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:20:25,062 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:20:25,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48eff67f-65c7-47d4-9b1e-c7873b89cf85/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 13:20:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:20:25,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 66 conjunts are in the unsatisfiable core [2022-12-13 13:20:25,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:20:25,844 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-12-13 13:20:25,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 10 [2022-12-13 13:20:25,974 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 13:20:25,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:20:28,550 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_~q2_back~0 4)) (.cse2 (select (select |c_#memory_int| c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)))) (let ((.cse5 (forall ((~q2~0.base Int) (~q2~0.offset Int)) (not (= (select (select |c_#memory_int| ~q2~0.base) (+ ~q2~0.offset .cse1)) .cse2)))) (.cse4 (* (div c_~x~0 4294967296) 4294967296)) (.cse3 (* c_~C~0 2))) (and (forall ((~q2~0.base Int) (~q2~0.offset Int)) (let ((.cse0 (select |c_#memory_int| ~q2~0.base))) (or (= c_~N~0 (+ c_~t~0 (select .cse0 (+ ~q2~0.offset (* c_~q2_front~0 4))))) (not (= (select .cse0 (+ ~q2~0.offset .cse1)) .cse2))))) (or (= (+ (* 4294967296 (div (+ .cse3 c_~z~0) 4294967296)) c_~x~0) (+ .cse4 .cse3 c_~z~0)) .cse5) (or .cse5 (= (+ c_~x~0 (* (div (+ c_~y~0 .cse3) 4294967296) 4294967296)) (+ .cse4 c_~y~0 .cse3)))))) is different from false [2022-12-13 13:20:30,583 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse4 (* c_~q2_back~0 4)) (.cse5 (select (select |c_#memory_int| c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)))) (let ((.cse2 (forall ((~q2~0.base Int) (~q2~0.offset Int)) (not (= (select (select |c_#memory_int| ~q2~0.base) (+ ~q2~0.offset .cse4)) .cse5)))) (.cse1 (* (div c_~x~0 4294967296) 4294967296)) (.cse0 (* c_~C~0 2))) (and (or (= (+ (* 4294967296 (div (+ .cse0 c_~z~0) 4294967296)) c_~x~0) (+ .cse1 .cse0 c_~z~0)) .cse2) (forall ((~q2~0.base Int) (~q2~0.offset Int)) (let ((.cse3 (select |c_#memory_int| ~q2~0.base))) (or (= c_~N~0 (select .cse3 (+ ~q2~0.offset (* c_~q2_front~0 4)))) (not (= (select .cse3 (+ ~q2~0.offset .cse4)) .cse5))))) (or .cse2 (= (+ c_~x~0 (* (div (+ c_~y~0 .cse0) 4294967296) 4294967296)) (+ .cse1 c_~y~0 .cse0)))))) is different from false [2022-12-13 13:21:02,855 WARN L233 SmtUtils]: Spent 32.12s on a formula simplification that was a NOOP. DAG size: 55 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 13:21:02,984 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:21:02,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 134 treesize of output 317 [2022-12-13 13:21:31,963 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 1 not checked. [2022-12-13 13:21:31,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330100340] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:21:31,963 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:21:31,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 10] total 37 [2022-12-13 13:21:31,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828224938] [2022-12-13 13:21:31,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:21:31,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-12-13 13:21:31,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:21:31,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-12-13 13:21:31,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1238, Unknown=2, NotChecked=142, Total=1482 [2022-12-13 13:21:32,027 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 452 [2022-12-13 13:21:32,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 2602 transitions, 37958 flow. Second operand has 39 states, 39 states have (on average 123.17948717948718) internal successors, (4804), 39 states have internal predecessors, (4804), 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) [2022-12-13 13:21:32,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:21:32,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 452 [2022-12-13 13:21:32,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:22:19,233 WARN L233 SmtUtils]: Spent 46.17s on a formula simplification. DAG size of input: 80 DAG size of output: 48 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 13:22:21,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:22:23,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:22:25,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:22:27,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:22:29,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:22:31,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:22:33,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:22:35,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:22:38,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:22:40,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:22:41,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:22:43,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:22:44,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:22:49,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:22:51,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:22:53,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:22:55,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:22:57,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:22:59,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:01,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-13 13:23:03,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:05,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:07,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:09,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:11,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:13,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:15,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:17,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:19,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:23,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:25,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:27,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:29,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:32,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-13 13:23:34,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:36,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:38,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:40,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-13 13:23:42,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:44,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:48,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:51,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:53,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:55,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:57,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:23:59,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:24:01,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:24:03,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-13 13:24:05,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:24:07,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:24:09,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:24:11,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:24:13,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:24:15,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:24:17,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:24:19,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:24:21,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:24:23,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:24:25,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:24:27,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:24:29,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:24:31,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-13 13:24:33,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:24:35,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:24:37,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:24:39,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:24:41,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:24:43,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-13 13:24:45,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:24:47,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:24:49,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:24:51,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:24:53,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:24:55,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:24:57,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:24:59,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:01,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:03,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:05,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-13 13:25:07,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:09,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:11,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:13,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:15,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-13 13:25:17,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:19,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:21,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:23,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:25,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:27,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:29,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:31,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:33,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:35,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:37,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-13 13:25:39,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:41,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:43,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:45,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:47,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:49,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:51,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-13 13:25:53,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:55,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:57,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:25:59,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:01,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:03,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:05,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:07,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:09,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:11,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:13,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-13 13:26:15,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:17,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:19,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:21,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:23,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:25,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:38,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:40,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:42,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:44,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:46,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:48,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:50,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-13 13:26:52,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:54,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:56,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:26:58,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:27:00,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:27:02,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-13 13:27:04,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:27:06,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:27:08,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:27:10,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:27:12,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:27:59,513 INFO L130 PetriNetUnfolder]: 72626/109154 cut-off events. [2022-12-13 13:27:59,513 INFO L131 PetriNetUnfolder]: For 1787692/1787692 co-relation queries the response was YES. [2022-12-13 13:28:00,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 888370 conditions, 109154 events. 72626/109154 cut-off events. For 1787692/1787692 co-relation queries the response was YES. Maximal size of possible extension queue 3607. Compared 846160 event pairs, 20928 based on Foata normal form. 3/96168 useless extension candidates. Maximal degree in co-relation 888270. Up to 107805 conditions per place. [2022-12-13 13:28:01,288 INFO L137 encePairwiseOnDemand]: 432/452 looper letters, 2644 selfloop transitions, 161 changer transitions 3/2808 dead transitions. [2022-12-13 13:28:01,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 2808 transitions, 45412 flow [2022-12-13 13:28:01,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 13:28:01,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-13 13:28:01,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3704 transitions. [2022-12-13 13:28:01,293 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.282575526396094 [2022-12-13 13:28:01,293 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3704 transitions. [2022-12-13 13:28:01,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3704 transitions. [2022-12-13 13:28:01,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:28:01,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3704 transitions. [2022-12-13 13:28:01,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 127.72413793103448) internal successors, (3704), 29 states have internal predecessors, (3704), 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) [2022-12-13 13:28:01,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 452.0) internal successors, (13560), 30 states have internal predecessors, (13560), 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) [2022-12-13 13:28:01,306 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 452.0) internal successors, (13560), 30 states have internal predecessors, (13560), 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) [2022-12-13 13:28:01,306 INFO L175 Difference]: Start difference. First operand has 313 places, 2602 transitions, 37958 flow. Second operand 29 states and 3704 transitions. [2022-12-13 13:28:01,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 2808 transitions, 45412 flow