./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product23.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/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_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/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_1c539a03-55e3-418b-92c2-5e199df1ef0b/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 c32d742da56eb7f975371d3819f8188d43c88569b223fcc4a7217dc4d57efe24 --- 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 12:52:44,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:52:44,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:52:44,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:52:44,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:52:44,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:52:44,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:52:44,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:52:44,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:52:44,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:52:44,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:52:44,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:52:44,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:52:44,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:52:44,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:52:44,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:52:44,722 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:52:44,723 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:52:44,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:52:44,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:52:44,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:52:44,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:52:44,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:52:44,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:52:44,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:52:44,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:52:44,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:52:44,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:52:44,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:52:44,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:52:44,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:52:44,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:52:44,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:52:44,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:52:44,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:52:44,737 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:52:44,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:52:44,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:52:44,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:52:44,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:52:44,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:52:44,739 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 12:52:44,761 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:52:44,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:52:44,762 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:52:44,762 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:52:44,769 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:52:44,769 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:52:44,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:52:44,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:52:44,770 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:52:44,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:52:44,770 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:52:44,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:52:44,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:52:44,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:52:44,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:52:44,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:52:44,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:52:44,771 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:52:44,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:52:44,771 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:52:44,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:52:44,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:52:44,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:52:44,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:52:44,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:52:44,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:52:44,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:52:44,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:52:44,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:52:44,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:52:44,772 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:52:44,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:52:44,773 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:52:44,773 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:52:44,773 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:52:44,773 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_1c539a03-55e3-418b-92c2-5e199df1ef0b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c32d742da56eb7f975371d3819f8188d43c88569b223fcc4a7217dc4d57efe24 [2022-12-13 12:52:44,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:52:44,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:52:44,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:52:44,972 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:52:44,972 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:52:44,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/product-lines/email_spec3_product23.cil.c [2022-12-13 12:52:47,449 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:52:47,700 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:52:47,701 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/sv-benchmarks/c/product-lines/email_spec3_product23.cil.c [2022-12-13 12:52:47,716 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/data/6bc5acdfd/8c9e1a5b862841a7ade0a67a098aa5a9/FLAG14476bbd3 [2022-12-13 12:52:48,019 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/data/6bc5acdfd/8c9e1a5b862841a7ade0a67a098aa5a9 [2022-12-13 12:52:48,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:52:48,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:52:48,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:52:48,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:52:48,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:52:48,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:52:48" (1/1) ... [2022-12-13 12:52:48,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4209bb6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:52:48, skipping insertion in model container [2022-12-13 12:52:48,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:52:48" (1/1) ... [2022-12-13 12:52:48,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:52:48,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:52:48,280 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:52:48,284 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:52:48,289 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:52:48,349 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_1c539a03-55e3-418b-92c2-5e199df1ef0b/sv-benchmarks/c/product-lines/email_spec3_product23.cil.c[22258,22271] [2022-12-13 12:52:48,410 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:52:48,413 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:52:48,430 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:52:48,435 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:52:48,435 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:52:48,436 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:52:48,443 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:52:48,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:52:48,520 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:52:48,535 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:52:48,537 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:52:48,540 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:52:48,570 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_1c539a03-55e3-418b-92c2-5e199df1ef0b/sv-benchmarks/c/product-lines/email_spec3_product23.cil.c[22258,22271] [2022-12-13 12:52:48,588 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:52:48,590 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:52:48,592 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:52:48,594 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:52:48,594 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:52:48,596 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:52:48,600 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:52:48,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:52:48,672 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:52:48,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:52:48 WrapperNode [2022-12-13 12:52:48,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:52:48,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:52:48,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:52:48,674 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:52:48,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:52:48" (1/1) ... [2022-12-13 12:52:48,702 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:52:48" (1/1) ... [2022-12-13 12:52:48,751 INFO L138 Inliner]: procedures = 131, calls = 227, calls flagged for inlining = 58, calls inlined = 51, statements flattened = 958 [2022-12-13 12:52:48,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:52:48,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:52:48,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:52:48,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:52:48,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:52:48" (1/1) ... [2022-12-13 12:52:48,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:52:48" (1/1) ... [2022-12-13 12:52:48,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:52:48" (1/1) ... [2022-12-13 12:52:48,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:52:48" (1/1) ... [2022-12-13 12:52:48,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:52:48" (1/1) ... [2022-12-13 12:52:48,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:52:48" (1/1) ... [2022-12-13 12:52:48,796 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:52:48" (1/1) ... [2022-12-13 12:52:48,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:52:48" (1/1) ... [2022-12-13 12:52:48,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:52:48,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:52:48,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:52:48,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:52:48,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:52:48" (1/1) ... [2022-12-13 12:52:48,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:52:48,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:52:48,835 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:52:48,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:52:48,871 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-12-13 12:52:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-12-13 12:52:48,871 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-12-13 12:52:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-12-13 12:52:48,871 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-13 12:52:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-13 12:52:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-12-13 12:52:48,872 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-12-13 12:52:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-13 12:52:48,872 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-13 12:52:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-13 12:52:48,872 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-13 12:52:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-13 12:52:48,872 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-13 12:52:48,873 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-13 12:52:48,873 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-13 12:52:48,873 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-13 12:52:48,873 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-13 12:52:48,873 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-13 12:52:48,873 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-13 12:52:48,873 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-13 12:52:48,873 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-13 12:52:48,874 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-13 12:52:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:52:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-13 12:52:48,874 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-13 12:52:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-12-13 12:52:48,874 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-12-13 12:52:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-12-13 12:52:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-12-13 12:52:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-13 12:52:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-13 12:52:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-12-13 12:52:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-12-13 12:52:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-13 12:52:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-13 12:52:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-13 12:52:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-13 12:52:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-13 12:52:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-13 12:52:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-13 12:52:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-13 12:52:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-13 12:52:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-13 12:52:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-13 12:52:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-13 12:52:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:52:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-13 12:52:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-13 12:52:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-12-13 12:52:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-12-13 12:52:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:52:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:52:49,034 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:52:49,037 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:52:49,624 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:52:49,631 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:52:49,631 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 12:52:49,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:52:49 BoogieIcfgContainer [2022-12-13 12:52:49,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:52:49,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:52:49,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:52:49,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:52:49,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:52:48" (1/3) ... [2022-12-13 12:52:49,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69811da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:52:49, skipping insertion in model container [2022-12-13 12:52:49,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:52:48" (2/3) ... [2022-12-13 12:52:49,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69811da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:52:49, skipping insertion in model container [2022-12-13 12:52:49,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:52:49" (3/3) ... [2022-12-13 12:52:49,640 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec3_product23.cil.c [2022-12-13 12:52:49,653 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:52:49,654 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 12:52:49,694 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:52:49,699 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;@8624dde, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:52:49,699 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 12:52:49,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 384 states, 300 states have (on average 1.5666666666666667) internal successors, (470), 305 states have internal predecessors, (470), 58 states have call successors, (58), 24 states have call predecessors, (58), 24 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) [2022-12-13 12:52:49,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-12-13 12:52:49,717 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:52:49,718 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:52:49,718 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:52:49,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:52:49,722 INFO L85 PathProgramCache]: Analyzing trace with hash -391445380, now seen corresponding path program 1 times [2022-12-13 12:52:49,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:52:49,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684802147] [2022-12-13 12:52:49,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:52:49,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:52:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:50,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:52:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:50,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:52:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:50,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:52:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:50,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 12:52:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:50,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 12:52:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:50,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 12:52:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:50,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:52:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:50,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:52:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:50,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 12:52:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:50,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:52:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:50,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:52:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:50,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 12:52:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:50,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:52:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:50,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 12:52:50,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:50,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 12:52:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:50,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 12:52:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:50,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 12:52:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:50,319 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 12:52:50,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:52:50,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684802147] [2022-12-13 12:52:50,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684802147] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:52:50,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356338355] [2022-12-13 12:52:50,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:52:50,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:52:50,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:52:50,322 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:52:50,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 12:52:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:50,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 1224 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 12:52:50,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:52:50,605 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 12:52:50,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:52:50,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356338355] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:52:50,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:52:50,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-12-13 12:52:50,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3110614] [2022-12-13 12:52:50,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:52:50,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 12:52:50,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:52:50,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 12:52:50,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:52:50,650 INFO L87 Difference]: Start difference. First operand has 384 states, 300 states have (on average 1.5666666666666667) internal successors, (470), 305 states have internal predecessors, (470), 58 states have call successors, (58), 24 states have call predecessors, (58), 24 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 12:52:50,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:52:50,708 INFO L93 Difference]: Finished difference Result 574 states and 862 transitions. [2022-12-13 12:52:50,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 12:52:50,710 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 131 [2022-12-13 12:52:50,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:52:50,721 INFO L225 Difference]: With dead ends: 574 [2022-12-13 12:52:50,721 INFO L226 Difference]: Without dead ends: 376 [2022-12-13 12:52:50,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:52:50,728 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:52:50,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:52:50,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-12-13 12:52:50,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2022-12-13 12:52:50,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 294 states have (on average 1.5612244897959184) internal successors, (459), 297 states have internal predecessors, (459), 58 states have call successors, (58), 24 states have call predecessors, (58), 23 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2022-12-13 12:52:50,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 572 transitions. [2022-12-13 12:52:50,789 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 572 transitions. Word has length 131 [2022-12-13 12:52:50,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:52:50,791 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 572 transitions. [2022-12-13 12:52:50,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 12:52:50,792 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 572 transitions. [2022-12-13 12:52:50,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-12-13 12:52:50,797 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:52:50,797 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:52:50,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 12:52:50,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-13 12:52:51,000 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:52:51,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:52:51,002 INFO L85 PathProgramCache]: Analyzing trace with hash 935095137, now seen corresponding path program 1 times [2022-12-13 12:52:51,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:52:51,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197931042] [2022-12-13 12:52:51,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:52:51,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:52:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:51,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:52:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:51,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:52:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:51,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:52:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:51,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 12:52:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:51,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 12:52:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:51,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 12:52:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:51,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 12:52:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:51,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 12:52:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:51,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 12:52:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:51,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 12:52:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:51,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 12:52:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:51,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:52:51,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:51,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 12:52:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:51,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 12:52:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:51,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 12:52:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:51,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:52:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:51,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 12:52:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:51,402 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 12:52:51,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:52:51,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197931042] [2022-12-13 12:52:51,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197931042] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:52:51,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225535265] [2022-12-13 12:52:51,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:52:51,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:52:51,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:52:51,404 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:52:51,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 12:52:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:51,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 1225 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 12:52:51,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:52:51,657 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 12:52:51,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:52:51,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225535265] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:52:51,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:52:51,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-12-13 12:52:51,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703705459] [2022-12-13 12:52:51,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:52:51,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:52:51,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:52:51,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:52:51,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:52:51,661 INFO L87 Difference]: Start difference. First operand 376 states and 572 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 12:52:51,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:52:51,695 INFO L93 Difference]: Finished difference Result 563 states and 836 transitions. [2022-12-13 12:52:51,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:52:51,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 132 [2022-12-13 12:52:51,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:52:51,699 INFO L225 Difference]: With dead ends: 563 [2022-12-13 12:52:51,699 INFO L226 Difference]: Without dead ends: 379 [2022-12-13 12:52:51,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:52:51,701 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 1 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:52:51,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1138 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:52:51,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-12-13 12:52:51,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 378. [2022-12-13 12:52:51,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 296 states have (on average 1.5574324324324325) internal successors, (461), 299 states have internal predecessors, (461), 58 states have call successors, (58), 24 states have call predecessors, (58), 23 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2022-12-13 12:52:51,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 574 transitions. [2022-12-13 12:52:51,727 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 574 transitions. Word has length 132 [2022-12-13 12:52:51,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:52:51,727 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 574 transitions. [2022-12-13 12:52:51,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 12:52:51,728 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 574 transitions. [2022-12-13 12:52:51,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-12-13 12:52:51,731 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:52:51,731 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:52:51,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 12:52:51,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-12-13 12:52:51,932 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:52:51,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:52:51,932 INFO L85 PathProgramCache]: Analyzing trace with hash 719647433, now seen corresponding path program 1 times [2022-12-13 12:52:51,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:52:51,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835141739] [2022-12-13 12:52:51,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:52:51,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:52:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:52:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:52:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:52:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 12:52:52,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 12:52:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 12:52:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 12:52:52,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 12:52:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 12:52:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 12:52:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 12:52:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 12:52:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 12:52:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 12:52:52,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,118 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 12:52:52,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:52:52,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835141739] [2022-12-13 12:52:52,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835141739] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:52:52,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62916916] [2022-12-13 12:52:52,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:52:52,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:52:52,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:52:52,121 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:52:52,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 12:52:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 12:52:52,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:52:52,375 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 12:52:52,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:52:52,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62916916] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:52:52,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:52:52,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-12-13 12:52:52,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361297322] [2022-12-13 12:52:52,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:52:52,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:52:52,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:52:52,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:52:52,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:52:52,377 INFO L87 Difference]: Start difference. First operand 378 states and 574 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 12:52:52,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:52:52,406 INFO L93 Difference]: Finished difference Result 804 states and 1240 transitions. [2022-12-13 12:52:52,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:52:52,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 122 [2022-12-13 12:52:52,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:52:52,409 INFO L225 Difference]: With dead ends: 804 [2022-12-13 12:52:52,409 INFO L226 Difference]: Without dead ends: 453 [2022-12-13 12:52:52,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:52:52,411 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 134 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:52:52,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1122 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:52:52,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-12-13 12:52:52,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 445. [2022-12-13 12:52:52,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 349 states have (on average 1.5759312320916905) internal successors, (550), 352 states have internal predecessors, (550), 72 states have call successors, (72), 24 states have call predecessors, (72), 23 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2022-12-13 12:52:52,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 691 transitions. [2022-12-13 12:52:52,428 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 691 transitions. Word has length 122 [2022-12-13 12:52:52,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:52:52,428 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 691 transitions. [2022-12-13 12:52:52,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 12:52:52,428 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 691 transitions. [2022-12-13 12:52:52,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-12-13 12:52:52,430 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:52:52,430 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:52:52,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 12:52:52,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:52:52,631 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:52:52,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:52:52,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1734292050, now seen corresponding path program 1 times [2022-12-13 12:52:52,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:52:52,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842938932] [2022-12-13 12:52:52,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:52:52,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:52:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:52:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:52:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:52:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 12:52:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 12:52:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 12:52:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:52:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:52:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 12:52:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 12:52:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 12:52:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 12:52:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 12:52:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 12:52:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:52:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 12:52:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 12:52:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:52,831 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 12:52:52,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:52:52,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842938932] [2022-12-13 12:52:52,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842938932] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:52:52,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7325178] [2022-12-13 12:52:52,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:52:52,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:52:52,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:52:52,833 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:52:52,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 12:52:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:53,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 1259 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 12:52:53,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:52:53,128 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 12:52:53,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:52:53,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7325178] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:52:53,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:52:53,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-12-13 12:52:53,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666490792] [2022-12-13 12:52:53,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:52:53,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:52:53,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:52:53,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:52:53,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:52:53,130 INFO L87 Difference]: Start difference. First operand 445 states and 691 transitions. Second operand has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-13 12:52:53,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:52:53,209 INFO L93 Difference]: Finished difference Result 881 states and 1372 transitions. [2022-12-13 12:52:53,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:52:53,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 142 [2022-12-13 12:52:53,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:52:53,213 INFO L225 Difference]: With dead ends: 881 [2022-12-13 12:52:53,213 INFO L226 Difference]: Without dead ends: 447 [2022-12-13 12:52:53,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:52:53,216 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 152 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 2077 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:52:53,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 2077 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:52:53,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-12-13 12:52:53,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2022-12-13 12:52:53,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 350 states have (on average 1.5742857142857143) internal successors, (551), 354 states have internal predecessors, (551), 72 states have call successors, (72), 24 states have call predecessors, (72), 24 states have return successors, (71), 68 states have call predecessors, (71), 69 states have call successors, (71) [2022-12-13 12:52:53,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 694 transitions. [2022-12-13 12:52:53,249 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 694 transitions. Word has length 142 [2022-12-13 12:52:53,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:52:53,249 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 694 transitions. [2022-12-13 12:52:53,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-13 12:52:53,249 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 694 transitions. [2022-12-13 12:52:53,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-12-13 12:52:53,253 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:52:53,253 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:52:53,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 12:52:53,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:52:53,454 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:52:53,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:52:53,454 INFO L85 PathProgramCache]: Analyzing trace with hash 994369784, now seen corresponding path program 1 times [2022-12-13 12:52:53,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:52:53,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410420087] [2022-12-13 12:52:53,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:52:53,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:52:53,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:53,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:52:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:53,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:52:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:53,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:52:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:53,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:52:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:53,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:52:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:53,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 12:52:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:53,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 12:52:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:53,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 12:52:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:53,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 12:52:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:53,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 12:52:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:53,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 12:52:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:53,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 12:52:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:53,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 12:52:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:53,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 12:52:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:53,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 12:52:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:53,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:52:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:53,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 12:52:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:53,666 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 12:52:53,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:52:53,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410420087] [2022-12-13 12:52:53,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410420087] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:52:53,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753516538] [2022-12-13 12:52:53,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:52:53,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:52:53,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:52:53,668 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:52:53,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 12:52:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:53,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 1260 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 12:52:53,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:52:53,945 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 12:52:53,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:52:53,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753516538] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:52:53,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:52:53,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-12-13 12:52:53,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317074145] [2022-12-13 12:52:53,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:52:53,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:52:53,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:52:53,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:52:53,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-12-13 12:52:53,947 INFO L87 Difference]: Start difference. First operand 447 states and 694 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-13 12:52:54,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:52:54,010 INFO L93 Difference]: Finished difference Result 883 states and 1377 transitions. [2022-12-13 12:52:54,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:52:54,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 143 [2022-12-13 12:52:54,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:52:54,013 INFO L225 Difference]: With dead ends: 883 [2022-12-13 12:52:54,013 INFO L226 Difference]: Without dead ends: 449 [2022-12-13 12:52:54,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-12-13 12:52:54,015 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 151 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 2066 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:52:54,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 2066 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:52:54,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-12-13 12:52:54,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2022-12-13 12:52:54,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 351 states have (on average 1.5726495726495726) internal successors, (552), 356 states have internal predecessors, (552), 72 states have call successors, (72), 24 states have call predecessors, (72), 25 states have return successors, (76), 68 states have call predecessors, (76), 69 states have call successors, (76) [2022-12-13 12:52:54,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 700 transitions. [2022-12-13 12:52:54,030 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 700 transitions. Word has length 143 [2022-12-13 12:52:54,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:52:54,030 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 700 transitions. [2022-12-13 12:52:54,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-13 12:52:54,031 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 700 transitions. [2022-12-13 12:52:54,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-12-13 12:52:54,032 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:52:54,033 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:52:54,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 12:52:54,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:52:54,233 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:52:54,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:52:54,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1552124652, now seen corresponding path program 1 times [2022-12-13 12:52:54,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:52:54,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859549142] [2022-12-13 12:52:54,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:52:54,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:52:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:54,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:52:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:54,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:52:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:54,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:52:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:54,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:52:54,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:54,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 12:52:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:54,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 12:52:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:54,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 12:52:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:54,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 12:52:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:54,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 12:52:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:54,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 12:52:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:54,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:52:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:54,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 12:52:54,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:54,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 12:52:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:54,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 12:52:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:54,403 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 12:52:54,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:52:54,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859549142] [2022-12-13 12:52:54,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859549142] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:52:54,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:52:54,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 12:52:54,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091832839] [2022-12-13 12:52:54,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:52:54,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 12:52:54,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:52:54,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 12:52:54,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:52:54,405 INFO L87 Difference]: Start difference. First operand 449 states and 700 transitions. Second operand has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 12:52:56,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:52:56,137 INFO L93 Difference]: Finished difference Result 997 states and 1577 transitions. [2022-12-13 12:52:56,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 12:52:56,138 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 125 [2022-12-13 12:52:56,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:52:56,143 INFO L225 Difference]: With dead ends: 997 [2022-12-13 12:52:56,143 INFO L226 Difference]: Without dead ends: 571 [2022-12-13 12:52:56,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 12:52:56,145 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 1395 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 2478 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 2972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 2478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-13 12:52:56,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1415 Valid, 1192 Invalid, 2972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 2478 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-13 12:52:56,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-12-13 12:52:56,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 449. [2022-12-13 12:52:56,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 351 states have (on average 1.5726495726495726) internal successors, (552), 356 states have internal predecessors, (552), 72 states have call successors, (72), 24 states have call predecessors, (72), 25 states have return successors, (75), 68 states have call predecessors, (75), 69 states have call successors, (75) [2022-12-13 12:52:56,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 699 transitions. [2022-12-13 12:52:56,190 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 699 transitions. Word has length 125 [2022-12-13 12:52:56,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:52:56,191 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 699 transitions. [2022-12-13 12:52:56,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 12:52:56,191 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 699 transitions. [2022-12-13 12:52:56,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 12:52:56,193 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:52:56,193 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:52:56,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 12:52:56,193 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:52:56,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:52:56,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1927742638, now seen corresponding path program 1 times [2022-12-13 12:52:56,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:52:56,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550738552] [2022-12-13 12:52:56,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:52:56,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:52:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:56,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:52:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:56,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:52:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:56,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:52:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:56,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:52:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:56,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 12:52:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:56,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:52:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:56,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 12:52:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:56,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 12:52:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:56,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:52:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:56,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:52:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:56,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 12:52:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:56,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 12:52:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:56,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 12:52:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:56,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 12:52:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:56,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 12:52:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:56,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-12-13 12:52:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:56,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:52:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:56,370 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 12:52:56,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:52:56,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550738552] [2022-12-13 12:52:56,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550738552] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:52:56,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:52:56,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 12:52:56,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547764559] [2022-12-13 12:52:56,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:52:56,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 12:52:56,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:52:56,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 12:52:56,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:52:56,373 INFO L87 Difference]: Start difference. First operand 449 states and 699 transitions. Second operand has 9 states, 8 states have (on average 11.25) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-13 12:52:58,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:52:58,141 INFO L93 Difference]: Finished difference Result 999 states and 1580 transitions. [2022-12-13 12:52:58,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 12:52:58,142 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.25) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 145 [2022-12-13 12:52:58,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:52:58,145 INFO L225 Difference]: With dead ends: 999 [2022-12-13 12:52:58,145 INFO L226 Difference]: Without dead ends: 573 [2022-12-13 12:52:58,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 12:52:58,147 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 1393 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 2466 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 2964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 2466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-13 12:52:58,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 1192 Invalid, 2964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 2466 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-13 12:52:58,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-12-13 12:52:58,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 451. [2022-12-13 12:52:58,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 352 states have (on average 1.5710227272727273) internal successors, (553), 358 states have internal predecessors, (553), 72 states have call successors, (72), 24 states have call predecessors, (72), 26 states have return successors, (77), 68 states have call predecessors, (77), 69 states have call successors, (77) [2022-12-13 12:52:58,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 702 transitions. [2022-12-13 12:52:58,171 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 702 transitions. Word has length 145 [2022-12-13 12:52:58,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:52:58,172 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 702 transitions. [2022-12-13 12:52:58,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.25) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-13 12:52:58,172 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 702 transitions. [2022-12-13 12:52:58,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-12-13 12:52:58,173 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:52:58,173 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:52:58,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 12:52:58,174 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:52:58,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:52:58,174 INFO L85 PathProgramCache]: Analyzing trace with hash 638647129, now seen corresponding path program 1 times [2022-12-13 12:52:58,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:52:58,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238195668] [2022-12-13 12:52:58,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:52:58,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:52:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:58,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:52:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:58,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:52:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:58,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:52:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:58,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:52:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:58,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 12:52:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:58,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 12:52:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:58,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 12:52:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:58,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 12:52:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:58,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 12:52:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:58,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 12:52:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:58,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 12:52:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:58,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 12:52:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:58,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:52:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:58,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-12-13 12:52:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:52:58,358 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 12:52:58,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:52:58,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238195668] [2022-12-13 12:52:58,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238195668] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:52:58,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:52:58,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 12:52:58,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944822213] [2022-12-13 12:52:58,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:52:58,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 12:52:58,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:52:58,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 12:52:58,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:52:58,361 INFO L87 Difference]: Start difference. First operand 451 states and 702 transitions. Second operand has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2022-12-13 12:53:00,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:53:00,200 INFO L93 Difference]: Finished difference Result 997 states and 1575 transitions. [2022-12-13 12:53:00,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 12:53:00,201 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 127 [2022-12-13 12:53:00,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:53:00,206 INFO L225 Difference]: With dead ends: 997 [2022-12-13 12:53:00,206 INFO L226 Difference]: Without dead ends: 573 [2022-12-13 12:53:00,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-12-13 12:53:00,208 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 1550 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 4067 mSolverCounterSat, 551 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 4618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 551 IncrementalHoareTripleChecker+Valid, 4067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-13 12:53:00,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 1555 Invalid, 4618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [551 Valid, 4067 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-13 12:53:00,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-12-13 12:53:00,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 451. [2022-12-13 12:53:00,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 352 states have (on average 1.5710227272727273) internal successors, (553), 358 states have internal predecessors, (553), 72 states have call successors, (72), 24 states have call predecessors, (72), 26 states have return successors, (76), 68 states have call predecessors, (76), 69 states have call successors, (76) [2022-12-13 12:53:00,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 701 transitions. [2022-12-13 12:53:00,233 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 701 transitions. Word has length 127 [2022-12-13 12:53:00,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:53:00,234 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 701 transitions. [2022-12-13 12:53:00,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2022-12-13 12:53:00,234 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 701 transitions. [2022-12-13 12:53:00,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 12:53:00,236 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:53:00,236 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:00,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 12:53:00,236 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:53:00,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:00,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1660844141, now seen corresponding path program 1 times [2022-12-13 12:53:00,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:53:00,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906065096] [2022-12-13 12:53:00,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:00,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:53:00,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:00,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:53:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:00,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:53:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:00,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:53:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:00,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:53:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:00,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 12:53:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:00,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 12:53:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:00,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:53:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:00,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 12:53:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:00,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 12:53:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:00,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 12:53:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:00,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:53:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:00,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 12:53:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:00,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:53:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:00,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-12-13 12:53:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:00,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-12-13 12:53:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:00,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 12:53:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:00,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-12-13 12:53:00,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:00,417 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 12:53:00,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:53:00,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906065096] [2022-12-13 12:53:00,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906065096] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:53:00,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:53:00,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 12:53:00,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818747179] [2022-12-13 12:53:00,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:53:00,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 12:53:00,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:53:00,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 12:53:00,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:53:00,418 INFO L87 Difference]: Start difference. First operand 451 states and 701 transitions. Second operand has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-12-13 12:53:02,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:53:02,276 INFO L93 Difference]: Finished difference Result 999 states and 1581 transitions. [2022-12-13 12:53:02,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 12:53:02,277 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 147 [2022-12-13 12:53:02,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:53:02,279 INFO L225 Difference]: With dead ends: 999 [2022-12-13 12:53:02,279 INFO L226 Difference]: Without dead ends: 575 [2022-12-13 12:53:02,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-12-13 12:53:02,280 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 1536 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 4184 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 4719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 4184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-13 12:53:02,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 1557 Invalid, 4719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 4184 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-13 12:53:02,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-12-13 12:53:02,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 453. [2022-12-13 12:53:02,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 353 states have (on average 1.5694050991501416) internal successors, (554), 360 states have internal predecessors, (554), 72 states have call successors, (72), 24 states have call predecessors, (72), 27 states have return successors, (81), 68 states have call predecessors, (81), 69 states have call successors, (81) [2022-12-13 12:53:02,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 707 transitions. [2022-12-13 12:53:02,307 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 707 transitions. Word has length 147 [2022-12-13 12:53:02,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:53:02,307 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 707 transitions. [2022-12-13 12:53:02,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-12-13 12:53:02,307 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 707 transitions. [2022-12-13 12:53:02,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-12-13 12:53:02,309 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:53:02,309 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:02,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 12:53:02,309 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:53:02,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:02,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1639873244, now seen corresponding path program 1 times [2022-12-13 12:53:02,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:53:02,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402215366] [2022-12-13 12:53:02,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:02,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:53:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:02,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:53:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:02,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:53:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:02,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:53:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:02,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:53:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:02,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 12:53:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:02,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 12:53:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:02,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 12:53:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:02,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 12:53:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:02,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 12:53:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:02,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 12:53:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:02,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 12:53:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:02,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:53:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:02,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 12:53:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:02,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-12-13 12:53:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:02,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 12:53:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:02,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 12:53:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:02,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-12-13 12:53:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:02,491 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 12:53:02,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:53:02,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402215366] [2022-12-13 12:53:02,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402215366] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:53:02,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216478100] [2022-12-13 12:53:02,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:02,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:53:02,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:53:02,493 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:53:02,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 12:53:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:02,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 12:53:02,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:53:02,781 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 12:53:02,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:53:02,860 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 12:53:02,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216478100] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:53:02,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:53:02,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2022-12-13 12:53:02,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217698187] [2022-12-13 12:53:02,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:53:02,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 12:53:02,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:53:02,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 12:53:02,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-12-13 12:53:02,863 INFO L87 Difference]: Start difference. First operand 453 states and 707 transitions. Second operand has 15 states, 14 states have (on average 11.142857142857142) internal successors, (156), 11 states have internal predecessors, (156), 4 states have call successors, (42), 6 states have call predecessors, (42), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2022-12-13 12:53:05,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:53:05,929 INFO L93 Difference]: Finished difference Result 1858 states and 3139 transitions. [2022-12-13 12:53:05,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 12:53:05,929 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 11.142857142857142) internal successors, (156), 11 states have internal predecessors, (156), 4 states have call successors, (42), 6 states have call predecessors, (42), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) Word has length 148 [2022-12-13 12:53:05,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:53:05,937 INFO L225 Difference]: With dead ends: 1858 [2022-12-13 12:53:05,937 INFO L226 Difference]: Without dead ends: 1436 [2022-12-13 12:53:05,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-12-13 12:53:05,939 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 3768 mSDsluCounter, 3266 mSDsCounter, 0 mSdLazyCounter, 5491 mSolverCounterSat, 1349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3770 SdHoareTripleChecker+Valid, 3674 SdHoareTripleChecker+Invalid, 6840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1349 IncrementalHoareTripleChecker+Valid, 5491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-13 12:53:05,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3770 Valid, 3674 Invalid, 6840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1349 Valid, 5491 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-13 12:53:05,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2022-12-13 12:53:06,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 871. [2022-12-13 12:53:06,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 692 states have (on average 1.6184971098265897) internal successors, (1120), 699 states have internal predecessors, (1120), 151 states have call successors, (151), 24 states have call predecessors, (151), 27 states have return successors, (170), 147 states have call predecessors, (170), 148 states have call successors, (170) [2022-12-13 12:53:06,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1441 transitions. [2022-12-13 12:53:06,004 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1441 transitions. Word has length 148 [2022-12-13 12:53:06,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:53:06,004 INFO L495 AbstractCegarLoop]: Abstraction has 871 states and 1441 transitions. [2022-12-13 12:53:06,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 11.142857142857142) internal successors, (156), 11 states have internal predecessors, (156), 4 states have call successors, (42), 6 states have call predecessors, (42), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2022-12-13 12:53:06,004 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1441 transitions. [2022-12-13 12:53:06,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-12-13 12:53:06,007 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:53:06,007 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:06,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 12:53:06,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 12:53:06,208 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:53:06,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:06,208 INFO L85 PathProgramCache]: Analyzing trace with hash 232108188, now seen corresponding path program 1 times [2022-12-13 12:53:06,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:53:06,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976409236] [2022-12-13 12:53:06,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:06,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:53:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:06,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:53:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:06,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:53:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:06,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:53:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:06,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:53:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:06,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 12:53:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:06,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 12:53:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:06,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 12:53:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:06,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 12:53:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:06,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 12:53:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:06,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 12:53:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:06,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 12:53:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:06,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 12:53:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:06,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 12:53:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:06,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 12:53:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:06,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 12:53:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:06,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:53:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:06,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 12:53:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:06,324 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 12:53:06,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:53:06,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976409236] [2022-12-13 12:53:06,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976409236] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:53:06,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:53:06,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:53:06,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650084116] [2022-12-13 12:53:06,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:53:06,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:53:06,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:53:06,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:53:06,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:53:06,325 INFO L87 Difference]: Start difference. First operand 871 states and 1441 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 12:53:07,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:53:07,686 INFO L93 Difference]: Finished difference Result 2184 states and 3707 transitions. [2022-12-13 12:53:07,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 12:53:07,687 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 151 [2022-12-13 12:53:07,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:53:07,691 INFO L225 Difference]: With dead ends: 2184 [2022-12-13 12:53:07,691 INFO L226 Difference]: Without dead ends: 1391 [2022-12-13 12:53:07,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:53:07,693 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 1380 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 1465 mSolverCounterSat, 583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 1465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:53:07,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1398 Valid, 1010 Invalid, 2048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [583 Valid, 1465 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 12:53:07,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2022-12-13 12:53:07,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1261. [2022-12-13 12:53:07,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 1003 states have (on average 1.6350947158524427) internal successors, (1640), 1010 states have internal predecessors, (1640), 230 states have call successors, (230), 24 states have call predecessors, (230), 27 states have return successors, (259), 226 states have call predecessors, (259), 227 states have call successors, (259) [2022-12-13 12:53:07,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 2129 transitions. [2022-12-13 12:53:07,776 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 2129 transitions. Word has length 151 [2022-12-13 12:53:07,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:53:07,776 INFO L495 AbstractCegarLoop]: Abstraction has 1261 states and 2129 transitions. [2022-12-13 12:53:07,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 12:53:07,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 2129 transitions. [2022-12-13 12:53:07,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-12-13 12:53:07,780 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:53:07,780 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:07,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 12:53:07,781 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:53:07,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:07,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1615411230, now seen corresponding path program 1 times [2022-12-13 12:53:07,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:53:07,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291328946] [2022-12-13 12:53:07,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:07,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:53:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:07,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:53:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:07,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:53:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:07,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:53:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:07,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:53:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:07,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 12:53:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:07,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 12:53:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:07,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 12:53:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:07,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:53:07,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:07,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 12:53:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:07,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 12:53:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:07,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:53:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:07,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-12-13 12:53:07,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:07,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-12-13 12:53:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:07,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-12-13 12:53:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:07,869 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 12:53:07,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:53:07,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291328946] [2022-12-13 12:53:07,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291328946] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:53:07,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:53:07,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:53:07,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566064680] [2022-12-13 12:53:07,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:53:07,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:53:07,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:53:07,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:53:07,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:53:07,871 INFO L87 Difference]: Start difference. First operand 1261 states and 2129 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 12:53:09,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:53:09,490 INFO L93 Difference]: Finished difference Result 3158 states and 5416 transitions. [2022-12-13 12:53:09,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 12:53:09,491 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 133 [2022-12-13 12:53:09,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:53:09,499 INFO L225 Difference]: With dead ends: 3158 [2022-12-13 12:53:09,499 INFO L226 Difference]: Without dead ends: 2028 [2022-12-13 12:53:09,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:53:09,502 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 1368 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 566 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 2042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 566 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:53:09,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1386 Valid, 996 Invalid, 2042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [566 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 12:53:09,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2022-12-13 12:53:09,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 1898. [2022-12-13 12:53:09,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1898 states, 1521 states have (on average 1.6423405654174885) internal successors, (2498), 1528 states have internal predecessors, (2498), 349 states have call successors, (349), 24 states have call predecessors, (349), 27 states have return successors, (378), 345 states have call predecessors, (378), 346 states have call successors, (378) [2022-12-13 12:53:09,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1898 states to 1898 states and 3225 transitions. [2022-12-13 12:53:09,636 INFO L78 Accepts]: Start accepts. Automaton has 1898 states and 3225 transitions. Word has length 133 [2022-12-13 12:53:09,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:53:09,636 INFO L495 AbstractCegarLoop]: Abstraction has 1898 states and 3225 transitions. [2022-12-13 12:53:09,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 12:53:09,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states and 3225 transitions. [2022-12-13 12:53:09,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 12:53:09,642 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:53:09,642 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:09,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 12:53:09,642 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:53:09,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:09,643 INFO L85 PathProgramCache]: Analyzing trace with hash 471932496, now seen corresponding path program 1 times [2022-12-13 12:53:09,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:53:09,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37796630] [2022-12-13 12:53:09,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:09,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:53:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:09,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:53:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:09,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:53:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:09,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:53:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:09,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:53:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:09,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 12:53:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:09,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 12:53:09,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:09,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 12:53:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:09,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 12:53:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:09,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:53:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:09,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 12:53:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:09,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 12:53:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:09,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:53:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:09,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-12-13 12:53:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:09,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-12-13 12:53:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:09,726 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 12:53:09,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:53:09,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37796630] [2022-12-13 12:53:09,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37796630] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:53:09,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:53:09,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:53:09,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837901628] [2022-12-13 12:53:09,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:53:09,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:53:09,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:53:09,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:53:09,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:53:09,729 INFO L87 Difference]: Start difference. First operand 1898 states and 3225 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 12:53:11,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:53:11,056 INFO L93 Difference]: Finished difference Result 4638 states and 8027 transitions. [2022-12-13 12:53:11,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 12:53:11,056 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2022-12-13 12:53:11,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:53:11,065 INFO L225 Difference]: With dead ends: 4638 [2022-12-13 12:53:11,065 INFO L226 Difference]: Without dead ends: 3006 [2022-12-13 12:53:11,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:53:11,068 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 1375 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 557 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 2031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 557 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:53:11,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1393 Valid, 997 Invalid, 2031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [557 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 12:53:11,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2022-12-13 12:53:11,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 2876. [2022-12-13 12:53:11,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2876 states, 2337 states have (on average 1.6482670089858793) internal successors, (3852), 2344 states have internal predecessors, (3852), 511 states have call successors, (511), 24 states have call predecessors, (511), 27 states have return successors, (556), 507 states have call predecessors, (556), 508 states have call successors, (556) [2022-12-13 12:53:11,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2876 states to 2876 states and 4919 transitions. [2022-12-13 12:53:11,283 INFO L78 Accepts]: Start accepts. Automaton has 2876 states and 4919 transitions. Word has length 134 [2022-12-13 12:53:11,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:53:11,283 INFO L495 AbstractCegarLoop]: Abstraction has 2876 states and 4919 transitions. [2022-12-13 12:53:11,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 12:53:11,284 INFO L276 IsEmpty]: Start isEmpty. Operand 2876 states and 4919 transitions. [2022-12-13 12:53:11,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-12-13 12:53:11,291 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:53:11,291 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:11,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 12:53:11,291 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:53:11,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:11,291 INFO L85 PathProgramCache]: Analyzing trace with hash 287501753, now seen corresponding path program 1 times [2022-12-13 12:53:11,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:53:11,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147119183] [2022-12-13 12:53:11,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:11,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:53:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:11,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:53:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:11,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:53:11,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:11,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:53:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:11,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:53:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:11,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 12:53:11,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:11,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 12:53:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:11,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 12:53:11,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:11,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 12:53:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:11,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 12:53:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:11,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 12:53:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:11,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 12:53:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:11,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 12:53:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:11,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-12-13 12:53:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:11,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-12-13 12:53:11,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:11,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 12:53:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:11,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-12-13 12:53:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:11,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 12:53:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:11,385 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 12:53:11,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:53:11,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147119183] [2022-12-13 12:53:11,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147119183] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:53:11,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:53:11,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:53:11,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417947390] [2022-12-13 12:53:11,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:53:11,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:53:11,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:53:11,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:53:11,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:53:11,386 INFO L87 Difference]: Start difference. First operand 2876 states and 4919 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 12:53:12,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:53:12,863 INFO L93 Difference]: Finished difference Result 6977 states and 12162 transitions. [2022-12-13 12:53:12,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 12:53:12,863 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 154 [2022-12-13 12:53:12,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:53:12,876 INFO L225 Difference]: With dead ends: 6977 [2022-12-13 12:53:12,877 INFO L226 Difference]: Without dead ends: 4586 [2022-12-13 12:53:12,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:53:12,881 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 1376 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 1446 mSolverCounterSat, 566 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1395 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 2012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 566 IncrementalHoareTripleChecker+Valid, 1446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:53:12,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1395 Valid, 993 Invalid, 2012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [566 Valid, 1446 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 12:53:12,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4586 states. [2022-12-13 12:53:13,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4586 to 4456. [2022-12-13 12:53:13,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4456 states, 3672 states have (on average 1.6525054466230937) internal successors, (6068), 3679 states have internal predecessors, (6068), 756 states have call successors, (756), 24 states have call predecessors, (756), 27 states have return successors, (827), 752 states have call predecessors, (827), 753 states have call successors, (827) [2022-12-13 12:53:13,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4456 states to 4456 states and 7651 transitions. [2022-12-13 12:53:13,184 INFO L78 Accepts]: Start accepts. Automaton has 4456 states and 7651 transitions. Word has length 154 [2022-12-13 12:53:13,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:53:13,184 INFO L495 AbstractCegarLoop]: Abstraction has 4456 states and 7651 transitions. [2022-12-13 12:53:13,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 12:53:13,185 INFO L276 IsEmpty]: Start isEmpty. Operand 4456 states and 7651 transitions. [2022-12-13 12:53:13,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-12-13 12:53:13,193 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:53:13,193 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:13,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 12:53:13,194 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:53:13,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:13,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1114240742, now seen corresponding path program 1 times [2022-12-13 12:53:13,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:53:13,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749110342] [2022-12-13 12:53:13,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:13,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:53:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:13,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:53:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:13,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:53:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:13,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:53:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:13,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:53:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:13,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 12:53:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:13,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 12:53:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:13,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:53:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:13,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 12:53:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:13,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 12:53:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:13,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 12:53:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:13,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:53:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:13,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-12-13 12:53:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:13,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:53:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:13,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 12:53:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:13,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 12:53:13,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:13,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-12-13 12:53:13,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:13,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-12-13 12:53:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:13,270 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 12:53:13,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:53:13,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749110342] [2022-12-13 12:53:13,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749110342] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:53:13,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:53:13,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:53:13,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964449426] [2022-12-13 12:53:13,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:53:13,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:53:13,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:53:13,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:53:13,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:53:13,272 INFO L87 Difference]: Start difference. First operand 4456 states and 7651 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 12:53:15,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:53:15,092 INFO L93 Difference]: Finished difference Result 11148 states and 19491 transitions. [2022-12-13 12:53:15,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 12:53:15,092 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 155 [2022-12-13 12:53:15,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:53:15,116 INFO L225 Difference]: With dead ends: 11148 [2022-12-13 12:53:15,116 INFO L226 Difference]: Without dead ends: 7429 [2022-12-13 12:53:15,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:53:15,123 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 1369 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 2037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:53:15,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1387 Valid, 1026 Invalid, 2037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [563 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 12:53:15,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7429 states. [2022-12-13 12:53:15,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7429 to 7299. [2022-12-13 12:53:15,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7299 states, 6022 states have (on average 1.6484556625705746) internal successors, (9927), 6029 states have internal predecessors, (9927), 1249 states have call successors, (1249), 24 states have call predecessors, (1249), 27 states have return successors, (1364), 1245 states have call predecessors, (1364), 1246 states have call successors, (1364) [2022-12-13 12:53:15,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7299 states to 7299 states and 12540 transitions. [2022-12-13 12:53:15,647 INFO L78 Accepts]: Start accepts. Automaton has 7299 states and 12540 transitions. Word has length 155 [2022-12-13 12:53:15,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:53:15,647 INFO L495 AbstractCegarLoop]: Abstraction has 7299 states and 12540 transitions. [2022-12-13 12:53:15,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 12:53:15,648 INFO L276 IsEmpty]: Start isEmpty. Operand 7299 states and 12540 transitions. [2022-12-13 12:53:15,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-12-13 12:53:15,664 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:53:15,664 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:15,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 12:53:15,664 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:53:15,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:15,664 INFO L85 PathProgramCache]: Analyzing trace with hash -449364387, now seen corresponding path program 1 times [2022-12-13 12:53:15,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:53:15,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980170494] [2022-12-13 12:53:15,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:15,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:53:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:15,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:53:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:15,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:53:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:15,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:53:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:15,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:53:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:15,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 12:53:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:15,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 12:53:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:15,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 12:53:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:15,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 12:53:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:15,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 12:53:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:15,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 12:53:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:15,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 12:53:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:15,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 12:53:15,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:15,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 12:53:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:15,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:53:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:15,773 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 12:53:15,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:53:15,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980170494] [2022-12-13 12:53:15,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980170494] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:53:15,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:53:15,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:53:15,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156306507] [2022-12-13 12:53:15,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:53:15,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:53:15,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:53:15,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:53:15,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:53:15,775 INFO L87 Difference]: Start difference. First operand 7299 states and 12540 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 12:53:17,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:53:17,999 INFO L93 Difference]: Finished difference Result 18568 states and 32455 transitions. [2022-12-13 12:53:18,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 12:53:18,000 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 137 [2022-12-13 12:53:18,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:53:18,034 INFO L225 Difference]: With dead ends: 18568 [2022-12-13 12:53:18,034 INFO L226 Difference]: Without dead ends: 12408 [2022-12-13 12:53:18,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:53:18,046 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 1367 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1385 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 2026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:53:18,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1385 Valid, 995 Invalid, 2026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [574 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 12:53:18,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12408 states. [2022-12-13 12:53:18,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12408 to 12278. [2022-12-13 12:53:18,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12278 states, 10179 states have (on average 1.6482955103644759) internal successors, (16778), 10186 states have internal predecessors, (16778), 2071 states have call successors, (2071), 24 states have call predecessors, (2071), 27 states have return successors, (2264), 2067 states have call predecessors, (2264), 2068 states have call successors, (2264) [2022-12-13 12:53:18,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12278 states to 12278 states and 21113 transitions. [2022-12-13 12:53:18,960 INFO L78 Accepts]: Start accepts. Automaton has 12278 states and 21113 transitions. Word has length 137 [2022-12-13 12:53:18,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:53:18,960 INFO L495 AbstractCegarLoop]: Abstraction has 12278 states and 21113 transitions. [2022-12-13 12:53:18,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 12:53:18,961 INFO L276 IsEmpty]: Start isEmpty. Operand 12278 states and 21113 transitions. [2022-12-13 12:53:18,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-12-13 12:53:18,977 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:53:18,978 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:18,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 12:53:18,978 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:53:18,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:18,978 INFO L85 PathProgramCache]: Analyzing trace with hash -786842926, now seen corresponding path program 1 times [2022-12-13 12:53:18,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:53:18,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896455126] [2022-12-13 12:53:18,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:18,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:53:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:19,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:53:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:19,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:53:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:19,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:53:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:19,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:53:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:19,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 12:53:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:19,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 12:53:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:19,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:53:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:19,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 12:53:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:19,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 12:53:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:19,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 12:53:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:19,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 12:53:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:19,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 12:53:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:19,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 12:53:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:19,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 12:53:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:19,060 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 12:53:19,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:53:19,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896455126] [2022-12-13 12:53:19,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896455126] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:53:19,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:53:19,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:53:19,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247994179] [2022-12-13 12:53:19,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:53:19,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:53:19,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:53:19,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:53:19,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:53:19,062 INFO L87 Difference]: Start difference. First operand 12278 states and 21113 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 12:53:21,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:53:21,799 INFO L93 Difference]: Finished difference Result 29526 states and 51315 transitions. [2022-12-13 12:53:21,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 12:53:21,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 138 [2022-12-13 12:53:21,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:53:21,845 INFO L225 Difference]: With dead ends: 29526 [2022-12-13 12:53:21,845 INFO L226 Difference]: Without dead ends: 19361 [2022-12-13 12:53:21,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:53:21,864 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 1358 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 2037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:53:21,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 976 Invalid, 2037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [554 Valid, 1483 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 12:53:21,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19361 states. [2022-12-13 12:53:23,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19361 to 19231. [2022-12-13 12:53:23,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19231 states, 15929 states have (on average 1.6227007345093853) internal successors, (25848), 15936 states have internal predecessors, (25848), 3274 states have call successors, (3274), 24 states have call predecessors, (3274), 27 states have return successors, (3611), 3270 states have call predecessors, (3611), 3271 states have call successors, (3611) [2022-12-13 12:53:23,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19231 states to 19231 states and 32733 transitions. [2022-12-13 12:53:23,381 INFO L78 Accepts]: Start accepts. Automaton has 19231 states and 32733 transitions. Word has length 138 [2022-12-13 12:53:23,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:53:23,382 INFO L495 AbstractCegarLoop]: Abstraction has 19231 states and 32733 transitions. [2022-12-13 12:53:23,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 12:53:23,382 INFO L276 IsEmpty]: Start isEmpty. Operand 19231 states and 32733 transitions. [2022-12-13 12:53:23,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-12-13 12:53:23,400 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:53:23,400 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:23,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 12:53:23,400 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:53:23,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:23,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1503272194, now seen corresponding path program 1 times [2022-12-13 12:53:23,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:53:23,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901201646] [2022-12-13 12:53:23,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:23,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:53:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:23,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:53:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:23,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:53:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:23,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:53:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:23,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:53:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:23,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 12:53:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:23,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 12:53:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:23,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 12:53:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:23,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:53:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:23,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 12:53:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:23,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 12:53:23,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:23,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 12:53:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:23,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 12:53:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:23,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 12:53:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:23,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 12:53:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:23,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:53:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:23,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 12:53:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:23,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-12-13 12:53:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:23,479 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 12:53:23,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:53:23,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901201646] [2022-12-13 12:53:23,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901201646] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:53:23,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:53:23,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:53:23,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128505623] [2022-12-13 12:53:23,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:53:23,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:53:23,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:53:23,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:53:23,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:53:23,480 INFO L87 Difference]: Start difference. First operand 19231 states and 32733 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 12:53:27,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:53:27,035 INFO L93 Difference]: Finished difference Result 50958 states and 88233 transitions. [2022-12-13 12:53:27,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 12:53:27,035 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 158 [2022-12-13 12:53:27,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:53:27,126 INFO L225 Difference]: With dead ends: 50958 [2022-12-13 12:53:27,126 INFO L226 Difference]: Without dead ends: 34482 [2022-12-13 12:53:27,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:53:27,158 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 1365 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 562 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1384 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 2037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 562 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:53:27,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1384 Valid, 998 Invalid, 2037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [562 Valid, 1475 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 12:53:27,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34482 states. [2022-12-13 12:53:29,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34482 to 34352. [2022-12-13 12:53:29,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34352 states, 28600 states have (on average 1.6193706293706294) internal successors, (46314), 28607 states have internal predecessors, (46314), 5724 states have call successors, (5724), 24 states have call predecessors, (5724), 27 states have return successors, (6335), 5720 states have call predecessors, (6335), 5721 states have call successors, (6335) [2022-12-13 12:53:29,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34352 states to 34352 states and 58373 transitions. [2022-12-13 12:53:29,865 INFO L78 Accepts]: Start accepts. Automaton has 34352 states and 58373 transitions. Word has length 158 [2022-12-13 12:53:29,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:53:29,865 INFO L495 AbstractCegarLoop]: Abstraction has 34352 states and 58373 transitions. [2022-12-13 12:53:29,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 12:53:29,865 INFO L276 IsEmpty]: Start isEmpty. Operand 34352 states and 58373 transitions. [2022-12-13 12:53:29,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-12-13 12:53:29,886 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:53:29,887 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:29,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 12:53:29,887 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:53:29,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:29,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1411988610, now seen corresponding path program 1 times [2022-12-13 12:53:29,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:53:29,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935817982] [2022-12-13 12:53:29,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:29,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:53:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:29,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:53:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:29,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:53:29,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:29,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:53:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:29,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:53:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:29,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 12:53:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:29,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 12:53:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:29,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 12:53:29,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:29,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 12:53:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:29,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 12:53:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:29,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 12:53:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:29,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 12:53:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:29,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 12:53:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:29,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-12-13 12:53:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:29,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-12-13 12:53:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:29,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 12:53:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:29,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:53:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:29,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-12-13 12:53:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 12:53:29,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:53:29,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935817982] [2022-12-13 12:53:29,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935817982] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:53:29,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:53:29,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:53:29,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802928021] [2022-12-13 12:53:29,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:53:29,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:53:29,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:53:29,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:53:29,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:53:29,974 INFO L87 Difference]: Start difference. First operand 34352 states and 58373 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 12:53:35,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:53:35,443 INFO L93 Difference]: Finished difference Result 93830 states and 161632 transitions. [2022-12-13 12:53:35,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 12:53:35,444 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 159 [2022-12-13 12:53:35,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:53:35,612 INFO L225 Difference]: With dead ends: 93830 [2022-12-13 12:53:35,612 INFO L226 Difference]: Without dead ends: 63149 [2022-12-13 12:53:35,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:53:35,669 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 1360 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1378 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 2042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:53:35,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1378 Valid, 1008 Invalid, 2042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [574 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 12:53:35,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63149 states. [2022-12-13 12:53:40,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63149 to 63019. [2022-12-13 12:53:40,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63019 states, 52754 states have (on average 1.6150244531220381) internal successors, (85199), 52761 states have internal predecessors, (85199), 10237 states have call successors, (10237), 24 states have call predecessors, (10237), 27 states have return successors, (11380), 10233 states have call predecessors, (11380), 10234 states have call successors, (11380) [2022-12-13 12:53:40,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63019 states to 63019 states and 106816 transitions. [2022-12-13 12:53:40,707 INFO L78 Accepts]: Start accepts. Automaton has 63019 states and 106816 transitions. Word has length 159 [2022-12-13 12:53:40,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:53:40,707 INFO L495 AbstractCegarLoop]: Abstraction has 63019 states and 106816 transitions. [2022-12-13 12:53:40,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 12:53:40,707 INFO L276 IsEmpty]: Start isEmpty. Operand 63019 states and 106816 transitions. [2022-12-13 12:53:40,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-12-13 12:53:40,739 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:53:40,739 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:40,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 12:53:40,740 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:53:40,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:40,740 INFO L85 PathProgramCache]: Analyzing trace with hash -386328098, now seen corresponding path program 1 times [2022-12-13 12:53:40,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:53:40,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103363593] [2022-12-13 12:53:40,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:40,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:53:40,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:40,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:53:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:40,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:53:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:40,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:53:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:40,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:53:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:40,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 12:53:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:40,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 12:53:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:40,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 12:53:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:40,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 12:53:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:40,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 12:53:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:40,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 12:53:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:40,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 12:53:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:40,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 12:53:40,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:40,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-12-13 12:53:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:40,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 12:53:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:40,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-12-13 12:53:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:40,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 12:53:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:40,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 12:53:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:40,818 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 12:53:40,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:53:40,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103363593] [2022-12-13 12:53:40,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103363593] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:53:40,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:53:40,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:53:40,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624105201] [2022-12-13 12:53:40,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:53:40,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:53:40,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:53:40,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:53:40,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:53:40,820 INFO L87 Difference]: Start difference. First operand 63019 states and 106816 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 12:53:49,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:53:49,576 INFO L93 Difference]: Finished difference Result 118206 states and 204009 transitions. [2022-12-13 12:53:49,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 12:53:49,576 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2022-12-13 12:53:49,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:53:49,912 INFO L225 Difference]: With dead ends: 118206 [2022-12-13 12:53:49,912 INFO L226 Difference]: Without dead ends: 118022 [2022-12-13 12:53:49,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:53:49,952 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 1360 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 566 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 2030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 566 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:53:49,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1379 Valid, 996 Invalid, 2030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [566 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 12:53:50,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118022 states. [2022-12-13 12:53:58,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118022 to 117892. [2022-12-13 12:53:58,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117892 states, 99259 states have (on average 1.6095971146193293) internal successors, (159767), 99266 states have internal predecessors, (159767), 18605 states have call successors, (18605), 24 states have call predecessors, (18605), 27 states have return successors, (20794), 18601 states have call predecessors, (20794), 18602 states have call successors, (20794) [2022-12-13 12:53:58,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117892 states to 117892 states and 199166 transitions. [2022-12-13 12:53:58,882 INFO L78 Accepts]: Start accepts. Automaton has 117892 states and 199166 transitions. Word has length 160 [2022-12-13 12:53:58,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:53:58,882 INFO L495 AbstractCegarLoop]: Abstraction has 117892 states and 199166 transitions. [2022-12-13 12:53:58,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 12:53:58,882 INFO L276 IsEmpty]: Start isEmpty. Operand 117892 states and 199166 transitions. [2022-12-13 12:53:58,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-12-13 12:53:58,934 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:53:58,934 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:58,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 12:53:58,934 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:53:58,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:58,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1918668607, now seen corresponding path program 1 times [2022-12-13 12:53:58,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:53:58,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238437869] [2022-12-13 12:53:58,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:58,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:53:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:59,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:53:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:59,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:53:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:59,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:53:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:59,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:53:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:59,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 12:53:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:59,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 12:53:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:59,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 12:53:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:59,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 12:53:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:59,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:53:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:59,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:53:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:59,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 12:53:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:59,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:53:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:59,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 12:53:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:59,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 12:53:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:59,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-12-13 12:53:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:59,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-12-13 12:53:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:59,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:53:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:59,104 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 12:53:59,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:53:59,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238437869] [2022-12-13 12:53:59,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238437869] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:53:59,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:53:59,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 12:53:59,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084851071] [2022-12-13 12:53:59,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:53:59,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:53:59,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:53:59,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:53:59,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:53:59,106 INFO L87 Difference]: Start difference. First operand 117892 states and 199166 transitions. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (21), 7 states have call predecessors, (21), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 12:54:15,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:54:15,986 INFO L93 Difference]: Finished difference Result 226966 states and 391333 transitions. [2022-12-13 12:54:15,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-13 12:54:15,987 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (21), 7 states have call predecessors, (21), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 161 [2022-12-13 12:54:15,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:54:16,675 INFO L225 Difference]: With dead ends: 226966 [2022-12-13 12:54:16,675 INFO L226 Difference]: Without dead ends: 226790 [2022-12-13 12:54:16,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=737, Unknown=0, NotChecked=0, Total=992 [2022-12-13 12:54:16,742 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 2859 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 3652 mSolverCounterSat, 1145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2877 SdHoareTripleChecker+Valid, 1724 SdHoareTripleChecker+Invalid, 4797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1145 IncrementalHoareTripleChecker+Valid, 3652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:54:16,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2877 Valid, 1724 Invalid, 4797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1145 Valid, 3652 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 12:54:16,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226790 states. [2022-12-13 12:54:33,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226790 to 226514. [2022-12-13 12:54:33,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226514 states, 190753 states have (on average 1.6131017598674726) internal successors, (307704), 190706 states have internal predecessors, (307704), 35710 states have call successors, (35710), 46 states have call predecessors, (35710), 50 states have return successors, (38991), 35761 states have call predecessors, (38991), 35706 states have call successors, (38991) [2022-12-13 12:54:34,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226514 states to 226514 states and 382405 transitions. [2022-12-13 12:54:34,281 INFO L78 Accepts]: Start accepts. Automaton has 226514 states and 382405 transitions. Word has length 161 [2022-12-13 12:54:34,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:54:34,281 INFO L495 AbstractCegarLoop]: Abstraction has 226514 states and 382405 transitions. [2022-12-13 12:54:34,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (21), 7 states have call predecessors, (21), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 12:54:34,281 INFO L276 IsEmpty]: Start isEmpty. Operand 226514 states and 382405 transitions. [2022-12-13 12:54:34,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-12-13 12:54:34,325 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:54:34,325 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:34,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 12:54:34,326 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:54:34,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:54:34,326 INFO L85 PathProgramCache]: Analyzing trace with hash -2089775399, now seen corresponding path program 1 times [2022-12-13 12:54:34,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:54:34,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312181664] [2022-12-13 12:54:34,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:54:34,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:54:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:54:34,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:54:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:54:34,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:54:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:54:34,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:54:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:54:34,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:54:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:54:34,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 12:54:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:54:34,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 12:54:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:54:34,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 12:54:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:54:34,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 12:54:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:54:34,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:54:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:54:34,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 12:54:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:54:34,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 12:54:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:54:34,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:54:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:54:34,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 12:54:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:54:34,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 12:54:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:54:34,503 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 12:54:34,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:54:34,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312181664] [2022-12-13 12:54:34,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312181664] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:54:34,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:54:34,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 12:54:34,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439133624] [2022-12-13 12:54:34,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:54:34,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:54:34,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:54:34,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:54:34,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:54:34,505 INFO L87 Difference]: Start difference. First operand 226514 states and 382405 transitions. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (18), 7 states have call predecessors, (18), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 12:54:52,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:54:52,896 INFO L93 Difference]: Finished difference Result 228360 states and 391644 transitions. [2022-12-13 12:54:52,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 12:54:52,896 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (18), 7 states have call predecessors, (18), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 142 [2022-12-13 12:54:52,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:54:53,673 INFO L225 Difference]: With dead ends: 228360 [2022-12-13 12:54:53,673 INFO L226 Difference]: Without dead ends: 228008 [2022-12-13 12:54:53,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=342, Invalid=918, Unknown=0, NotChecked=0, Total=1260 [2022-12-13 12:54:53,738 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 2712 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 4681 mSolverCounterSat, 1466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2729 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 6147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1466 IncrementalHoareTripleChecker+Valid, 4681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-13 12:54:53,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2729 Valid, 1327 Invalid, 6147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1466 Valid, 4681 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-13 12:54:53,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228008 states. [2022-12-13 12:55:11,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228008 to 227332. [2022-12-13 12:55:11,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227332 states, 191388 states have (on average 1.6126559658912785) internal successors, (308643), 191353 states have internal predecessors, (308643), 35818 states have call successors, (35818), 112 states have call predecessors, (35818), 125 states have return successors, (39120), 35866 states have call predecessors, (39120), 35806 states have call successors, (39120) [2022-12-13 12:55:12,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227332 states to 227332 states and 383581 transitions. [2022-12-13 12:55:12,368 INFO L78 Accepts]: Start accepts. Automaton has 227332 states and 383581 transitions. Word has length 142 [2022-12-13 12:55:12,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:55:12,368 INFO L495 AbstractCegarLoop]: Abstraction has 227332 states and 383581 transitions. [2022-12-13 12:55:12,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (18), 7 states have call predecessors, (18), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 12:55:12,368 INFO L276 IsEmpty]: Start isEmpty. Operand 227332 states and 383581 transitions. [2022-12-13 12:55:12,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-12-13 12:55:12,432 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:55:12,432 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:55:12,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 12:55:12,509 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:55:12,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:12,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1960085746, now seen corresponding path program 1 times [2022-12-13 12:55:12,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:12,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978274365] [2022-12-13 12:55:12,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:12,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:12,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:55:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:12,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:55:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:12,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:55:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:12,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:55:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:12,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 12:55:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:12,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 12:55:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:12,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 12:55:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:12,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 12:55:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:12,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:55:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:12,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 12:55:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:12,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 12:55:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:12,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 12:55:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:12,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:55:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:12,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 12:55:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:12,738 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 12:55:12,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:12,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978274365] [2022-12-13 12:55:12,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978274365] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:12,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:55:12,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-12-13 12:55:12,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852754728] [2022-12-13 12:55:12,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:12,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 12:55:12,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:12,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 12:55:12,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2022-12-13 12:55:12,740 INFO L87 Difference]: Start difference. First operand 227332 states and 383581 transitions. Second operand has 17 states, 15 states have (on average 6.533333333333333) internal successors, (98), 11 states have internal predecessors, (98), 7 states have call successors, (18), 8 states have call predecessors, (18), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2022-12-13 12:55:31,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:55:31,200 INFO L93 Difference]: Finished difference Result 229808 states and 393788 transitions. [2022-12-13 12:55:31,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-13 12:55:31,201 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.533333333333333) internal successors, (98), 11 states have internal predecessors, (98), 7 states have call successors, (18), 8 states have call predecessors, (18), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) Word has length 143 [2022-12-13 12:55:31,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:55:31,935 INFO L225 Difference]: With dead ends: 229808 [2022-12-13 12:55:31,935 INFO L226 Difference]: Without dead ends: 228566 [2022-12-13 12:55:32,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=423, Invalid=2027, Unknown=0, NotChecked=0, Total=2450 [2022-12-13 12:55:32,003 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 1997 mSDsluCounter, 2535 mSDsCounter, 0 mSdLazyCounter, 7429 mSolverCounterSat, 1047 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 2747 SdHoareTripleChecker+Invalid, 8476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1047 IncrementalHoareTripleChecker+Valid, 7429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-13 12:55:32,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1997 Valid, 2747 Invalid, 8476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1047 Valid, 7429 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-13 12:55:32,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228566 states. [2022-12-13 12:55:49,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228566 to 227616. [2022-12-13 12:55:49,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227616 states, 191588 states have (on average 1.6123817775643567) internal successors, (308913), 191562 states have internal predecessors, (308913), 35896 states have call successors, (35896), 118 states have call predecessors, (35896), 131 states have return successors, (39195), 35935 states have call predecessors, (39195), 35878 states have call successors, (39195) [2022-12-13 12:55:50,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227616 states to 227616 states and 384004 transitions. [2022-12-13 12:55:50,568 INFO L78 Accepts]: Start accepts. Automaton has 227616 states and 384004 transitions. Word has length 143 [2022-12-13 12:55:50,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:55:50,569 INFO L495 AbstractCegarLoop]: Abstraction has 227616 states and 384004 transitions. [2022-12-13 12:55:50,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.533333333333333) internal successors, (98), 11 states have internal predecessors, (98), 7 states have call successors, (18), 8 states have call predecessors, (18), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2022-12-13 12:55:50,569 INFO L276 IsEmpty]: Start isEmpty. Operand 227616 states and 384004 transitions. [2022-12-13 12:55:50,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 12:55:50,623 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:55:50,623 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:55:50,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 12:55:50,623 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:55:50,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:55:50,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1391628593, now seen corresponding path program 1 times [2022-12-13 12:55:50,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:55:50,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490452896] [2022-12-13 12:55:50,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:50,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:55:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:50,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:55:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:50,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:55:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:50,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:55:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:50,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:55:50,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:50,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 12:55:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:50,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 12:55:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:50,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 12:55:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:50,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 12:55:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:50,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 12:55:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:50,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-12-13 12:55:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:50,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:55:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:50,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-12-13 12:55:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:50,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 12:55:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:50,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 12:55:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:51,002 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 12:55:51,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:55:51,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490452896] [2022-12-13 12:55:51,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490452896] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:55:51,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540096807] [2022-12-13 12:55:51,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:55:51,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:55:51,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:55:51,004 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:55:51,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 12:55:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:55:51,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 1264 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-13 12:55:51,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:55:51,416 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 12:55:51,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:55:51,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540096807] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:55:51,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:55:51,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [20] total 31 [2022-12-13 12:55:51,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940201298] [2022-12-13 12:55:51,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:55:51,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 12:55:51,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:55:51,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 12:55:51,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=857, Unknown=0, NotChecked=0, Total=930 [2022-12-13 12:55:51,418 INFO L87 Difference]: Start difference. First operand 227616 states and 384004 transitions. Second operand has 13 states, 12 states have (on average 9.0) internal successors, (108), 11 states have internal predecessors, (108), 6 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2022-12-13 12:56:08,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:56:08,036 INFO L93 Difference]: Finished difference Result 230462 states and 388231 transitions. [2022-12-13 12:56:08,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 12:56:08,037 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 9.0) internal successors, (108), 11 states have internal predecessors, (108), 6 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) Word has length 146 [2022-12-13 12:56:08,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:56:08,742 INFO L225 Difference]: With dead ends: 230462 [2022-12-13 12:56:08,743 INFO L226 Difference]: Without dead ends: 229702 [2022-12-13 12:56:08,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2022-12-13 12:56:08,814 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 1060 mSDsluCounter, 5485 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 6084 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:56:08,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 6084 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 12:56:08,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229702 states. [2022-12-13 12:56:27,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229702 to 229588. [2022-12-13 12:56:27,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229588 states, 193079 states have (on average 1.6108794845633134) internal successors, (311027), 193093 states have internal predecessors, (311027), 36238 states have call successors, (36238), 218 states have call predecessors, (36238), 270 states have return successors, (39720), 36276 states have call predecessors, (39720), 36204 states have call successors, (39720) [2022-12-13 12:56:28,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229588 states to 229588 states and 386985 transitions. [2022-12-13 12:56:28,526 INFO L78 Accepts]: Start accepts. Automaton has 229588 states and 386985 transitions. Word has length 146 [2022-12-13 12:56:28,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:56:28,526 INFO L495 AbstractCegarLoop]: Abstraction has 229588 states and 386985 transitions. [2022-12-13 12:56:28,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 9.0) internal successors, (108), 11 states have internal predecessors, (108), 6 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2022-12-13 12:56:28,527 INFO L276 IsEmpty]: Start isEmpty. Operand 229588 states and 386985 transitions. [2022-12-13 12:56:28,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 12:56:28,583 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:56:28,583 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:56:28,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 12:56:28,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 12:56:28,785 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:56:28,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:56:28,786 INFO L85 PathProgramCache]: Analyzing trace with hash -573720030, now seen corresponding path program 1 times [2022-12-13 12:56:28,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:56:28,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827680096] [2022-12-13 12:56:28,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:56:28,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:56:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:29,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:56:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:29,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:56:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:29,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:56:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:29,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:56:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:29,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 12:56:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:29,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 12:56:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:29,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 12:56:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:29,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 12:56:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:29,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 12:56:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:29,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-12-13 12:56:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:29,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:56:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:29,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-12-13 12:56:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:29,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 12:56:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:29,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 12:56:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:56:29,162 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 12:56:29,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:56:29,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827680096] [2022-12-13 12:56:29,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827680096] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:56:29,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:56:29,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-12-13 12:56:29,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897282604] [2022-12-13 12:56:29,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:56:29,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 12:56:29,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:56:29,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 12:56:29,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2022-12-13 12:56:29,164 INFO L87 Difference]: Start difference. First operand 229588 states and 386985 transitions. Second operand has 17 states, 16 states have (on average 6.375) internal successors, (102), 11 states have internal predecessors, (102), 6 states have call successors, (18), 8 states have call predecessors, (18), 4 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2022-12-13 12:56:51,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:56:51,260 INFO L93 Difference]: Finished difference Result 234120 states and 400584 transitions. [2022-12-13 12:56:51,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-13 12:56:51,261 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 6.375) internal successors, (102), 11 states have internal predecessors, (102), 6 states have call successors, (18), 8 states have call predecessors, (18), 4 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) Word has length 147 [2022-12-13 12:56:51,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:56:52,024 INFO L225 Difference]: With dead ends: 234120 [2022-12-13 12:56:52,024 INFO L226 Difference]: Without dead ends: 232278 [2022-12-13 12:56:52,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 776 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=580, Invalid=2612, Unknown=0, NotChecked=0, Total=3192 [2022-12-13 12:56:52,108 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 3499 mSDsluCounter, 2334 mSDsCounter, 0 mSdLazyCounter, 7275 mSolverCounterSat, 1747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3519 SdHoareTripleChecker+Valid, 2540 SdHoareTripleChecker+Invalid, 9022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1747 IncrementalHoareTripleChecker+Valid, 7275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:56:52,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3519 Valid, 2540 Invalid, 9022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1747 Valid, 7275 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-12-13 12:56:52,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232278 states. [2022-12-13 12:57:11,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232278 to 229712. [2022-12-13 12:57:12,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229712 states, 193167 states have (on average 1.6106011896441939) internal successors, (311115), 193187 states have internal predecessors, (311115), 36254 states have call successors, (36254), 218 states have call predecessors, (36254), 290 states have return successors, (39806), 36306 states have call predecessors, (39806), 36220 states have call successors, (39806) [2022-12-13 12:57:12,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229712 states to 229712 states and 387175 transitions. [2022-12-13 12:57:12,978 INFO L78 Accepts]: Start accepts. Automaton has 229712 states and 387175 transitions. Word has length 147 [2022-12-13 12:57:12,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:57:12,978 INFO L495 AbstractCegarLoop]: Abstraction has 229712 states and 387175 transitions. [2022-12-13 12:57:12,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 6.375) internal successors, (102), 11 states have internal predecessors, (102), 6 states have call successors, (18), 8 states have call predecessors, (18), 4 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2022-12-13 12:57:12,979 INFO L276 IsEmpty]: Start isEmpty. Operand 229712 states and 387175 transitions. [2022-12-13 12:57:13,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 12:57:13,034 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:57:13,034 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:57:13,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 12:57:13,034 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:57:13,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:57:13,035 INFO L85 PathProgramCache]: Analyzing trace with hash 2125659065, now seen corresponding path program 1 times [2022-12-13 12:57:13,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:57:13,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521884736] [2022-12-13 12:57:13,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:57:13,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:57:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:13,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:57:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:13,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:57:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:13,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:57:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:13,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:57:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:13,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 12:57:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:13,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 12:57:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:13,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 12:57:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:13,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 12:57:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:13,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 12:57:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:13,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-12-13 12:57:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:13,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:57:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:13,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-12-13 12:57:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:13,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 12:57:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:13,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 12:57:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:13,521 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 12:57:13,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:57:13,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521884736] [2022-12-13 12:57:13,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521884736] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:57:13,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053296660] [2022-12-13 12:57:13,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:57:13,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:57:13,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:57:13,522 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:57:13,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 12:57:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:13,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-13 12:57:13,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:57:14,276 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 12:57:14,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:57:14,826 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 12:57:14,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053296660] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:57:14,827 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:57:14,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17, 18] total 53 [2022-12-13 12:57:14,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272026951] [2022-12-13 12:57:14,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:57:14,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-12-13 12:57:14,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:57:14,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-12-13 12:57:14,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=2578, Unknown=0, NotChecked=0, Total=2756 [2022-12-13 12:57:14,829 INFO L87 Difference]: Start difference. First operand 229712 states and 387175 transitions. Second operand has 53 states, 44 states have (on average 6.590909090909091) internal successors, (290), 46 states have internal predecessors, (290), 16 states have call successors, (52), 13 states have call predecessors, (52), 18 states have return successors, (42), 10 states have call predecessors, (42), 15 states have call successors, (42) [2022-12-13 12:58:59,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:58:59,713 INFO L93 Difference]: Finished difference Result 948849 states and 1647711 transitions. [2022-12-13 12:58:59,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-12-13 12:58:59,714 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 44 states have (on average 6.590909090909091) internal successors, (290), 46 states have internal predecessors, (290), 16 states have call successors, (52), 13 states have call predecessors, (52), 18 states have return successors, (42), 10 states have call predecessors, (42), 15 states have call successors, (42) Word has length 147 [2022-12-13 12:58:59,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:59:03,807 INFO L225 Difference]: With dead ends: 948849 [2022-12-13 12:59:03,807 INFO L226 Difference]: Without dead ends: 946937 [2022-12-13 12:59:04,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 304 SyntacticMatches, 1 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4080 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2399, Invalid=14893, Unknown=0, NotChecked=0, Total=17292 [2022-12-13 12:59:04,229 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 10502 mSDsluCounter, 6045 mSDsCounter, 0 mSdLazyCounter, 36853 mSolverCounterSat, 6966 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10520 SdHoareTripleChecker+Valid, 6267 SdHoareTripleChecker+Invalid, 43819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 6966 IncrementalHoareTripleChecker+Valid, 36853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-12-13 12:59:04,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10520 Valid, 6267 Invalid, 43819 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [6966 Valid, 36853 Invalid, 0 Unknown, 0 Unchecked, 15.4s Time] [2022-12-13 12:59:04,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946937 states. [2022-12-13 13:00:23,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946937 to 690501. [2022-12-13 13:00:24,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690501 states, 580385 states have (on average 1.6094816371891072) internal successors, (934119), 580401 states have internal predecessors, (934119), 109093 states have call successors, (109093), 650 states have call predecessors, (109093), 1022 states have return successors, (139460), 109449 states have call predecessors, (139460), 108995 states have call successors, (139460) [2022-12-13 13:00:27,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690501 states to 690501 states and 1182672 transitions. [2022-12-13 13:00:27,148 INFO L78 Accepts]: Start accepts. Automaton has 690501 states and 1182672 transitions. Word has length 147 [2022-12-13 13:00:27,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:00:27,149 INFO L495 AbstractCegarLoop]: Abstraction has 690501 states and 1182672 transitions. [2022-12-13 13:00:27,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 44 states have (on average 6.590909090909091) internal successors, (290), 46 states have internal predecessors, (290), 16 states have call successors, (52), 13 states have call predecessors, (52), 18 states have return successors, (42), 10 states have call predecessors, (42), 15 states have call successors, (42) [2022-12-13 13:00:27,149 INFO L276 IsEmpty]: Start isEmpty. Operand 690501 states and 1182672 transitions. [2022-12-13 13:00:27,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 13:00:27,343 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:00:27,343 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:00:27,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-13 13:00:27,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c539a03-55e3-418b-92c2-5e199df1ef0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 13:00:27,545 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:00:27,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:00:27,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1569964759, now seen corresponding path program 1 times [2022-12-13 13:00:27,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:00:27,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144901971] [2022-12-13 13:00:27,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:27,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:00:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:27,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:00:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:27,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:00:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:27,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 13:00:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:27,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 13:00:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:27,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 13:00:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:27,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 13:00:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:27,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 13:00:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:27,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 13:00:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:27,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 13:00:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:27,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-12-13 13:00:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:27,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 13:00:27,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:27,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-12-13 13:00:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:27,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 13:00:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:27,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-12-13 13:00:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 13:00:27,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:00:27,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144901971] [2022-12-13 13:00:27,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144901971] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:00:27,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:00:27,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-12-13 13:00:27,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239813743] [2022-12-13 13:00:27,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:00:27,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 13:00:27,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:00:27,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 13:00:27,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2022-12-13 13:00:27,949 INFO L87 Difference]: Start difference. First operand 690501 states and 1182672 transitions. Second operand has 17 states, 16 states have (on average 6.375) internal successors, (102), 11 states have internal predecessors, (102), 7 states have call successors, (18), 8 states have call predecessors, (18), 2 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-12-13 13:01:42,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:01:42,595 INFO L93 Difference]: Finished difference Result 709537 states and 1232177 transitions. [2022-12-13 13:01:42,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-13 13:01:42,595 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 6.375) internal successors, (102), 11 states have internal predecessors, (102), 7 states have call successors, (18), 8 states have call predecessors, (18), 2 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 147 [2022-12-13 13:01:42,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:01:45,418 INFO L225 Difference]: With dead ends: 709537 [2022-12-13 13:01:45,418 INFO L226 Difference]: Without dead ends: 695891 [2022-12-13 13:01:45,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=423, Invalid=2027, Unknown=0, NotChecked=0, Total=2450 [2022-12-13 13:01:45,741 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 1916 mSDsluCounter, 2535 mSDsCounter, 0 mSdLazyCounter, 7699 mSolverCounterSat, 944 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1916 SdHoareTripleChecker+Valid, 2747 SdHoareTripleChecker+Invalid, 8643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 944 IncrementalHoareTripleChecker+Valid, 7699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-13 13:01:45,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1916 Valid, 2747 Invalid, 8643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [944 Valid, 7699 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-13 13:01:46,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695891 states. [2022-12-13 13:03:00,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695891 to 689765. [2022-12-13 13:03:01,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689765 states, 579837 states have (on average 1.609660990933659) internal successors, (933341), 579869 states have internal predecessors, (933341), 108889 states have call successors, (108889), 650 states have call predecessors, (108889), 1038 states have return successors, (139112), 109245 states have call predecessors, (139112), 108791 states have call successors, (139112) [2022-12-13 13:03:04,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689765 states to 689765 states and 1181342 transitions. [2022-12-13 13:03:04,391 INFO L78 Accepts]: Start accepts. Automaton has 689765 states and 1181342 transitions. Word has length 147 [2022-12-13 13:03:04,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:03:04,391 INFO L495 AbstractCegarLoop]: Abstraction has 689765 states and 1181342 transitions. [2022-12-13 13:03:04,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 6.375) internal successors, (102), 11 states have internal predecessors, (102), 7 states have call successors, (18), 8 states have call predecessors, (18), 2 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-12-13 13:03:04,392 INFO L276 IsEmpty]: Start isEmpty. Operand 689765 states and 1181342 transitions. [2022-12-13 13:03:04,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-12-13 13:03:04,587 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:03:04,587 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:04,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 13:03:04,587 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:03:04,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:03:04,587 INFO L85 PathProgramCache]: Analyzing trace with hash -909128365, now seen corresponding path program 1 times [2022-12-13 13:03:04,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:03:04,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476389863] [2022-12-13 13:03:04,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:03:04,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:03:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:03:04,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:03:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:03:04,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:03:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:03:04,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 13:03:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:03:04,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 13:03:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:03:04,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 13:03:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:03:04,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 13:03:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:03:04,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 13:03:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:03:04,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 13:03:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:03:04,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 13:03:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:03:04,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 13:03:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:03:04,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 13:03:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:03:04,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 13:03:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:03:04,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 13:03:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:03:04,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 13:03:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:03:04,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 13:03:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:03:04,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 13:03:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:03:04,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-12-13 13:03:04,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:03:04,790 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 13:03:04,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:03:04,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476389863] [2022-12-13 13:03:04,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476389863] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:03:04,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:03:04,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 13:03:04,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403390678] [2022-12-13 13:03:04,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:03:04,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 13:03:04,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:03:04,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 13:03:04,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-12-13 13:03:04,791 INFO L87 Difference]: Start difference. First operand 689765 states and 1181342 transitions. Second operand has 14 states, 13 states have (on average 8.384615384615385) internal successors, (109), 8 states have internal predecessors, (109), 4 states have call successors, (21), 8 states have call predecessors, (21), 2 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17)